diff --git a/f103c8t6_keil/MDK-ARM/MYDEIVERS/fonts.c b/f103c8t6_keil/MDK-ARM/MYDEIVERS/fonts.c
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/f103c8t6_keil/MDK-ARM/MYDEIVERS/fonts.c
@@ -0,0 +1 @@
+
diff --git a/f103c8t6_keil/MDK-ARM/MYDEIVERS/fonts.h b/f103c8t6_keil/MDK-ARM/MYDEIVERS/fonts.h
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/f103c8t6_keil/MDK-ARM/MYDEIVERS/fonts.h
@@ -0,0 +1 @@
+
diff --git a/f103c8t6_keil/MDK-ARM/MYDEIVERS/hread_interface.c b/f103c8t6_keil/MDK-ARM/MYDEIVERS/hread_interface.c
index ef77797..383efda 100644
--- a/f103c8t6_keil/MDK-ARM/MYDEIVERS/hread_interface.c
+++ b/f103c8t6_keil/MDK-ARM/MYDEIVERS/hread_interface.c
@@ -7,12 +7,12 @@
 
 #include "hread_interface.h"
 
-void IIC_SAND_DATE(uint16_t DEVICE_ADD,uint16_t IN_DEVICE_ADD,char *DATAS,uint16_t LONG)
+void IIC_SAND_DATE(uint16_t DEVICE_ADD,uint16_t IN_DEVICE_ADD,uint8_t *DATAS,uint16_t LONG)
 {
 	HAL_I2C_Mem_Write(&hi2c1,DEVICE_ADD,IN_DEVICE_ADD,I2C_MEMADD_SIZE_8BIT,DATAS,LONG,100);
 }
 
-void IIC_READ_DATE(uint16_t DEVICE_ADD,uint16_t IN_DEVICE_ADD,char *DATAS,uint16_t LONG)
+void IIC_READ_DATE(uint16_t DEVICE_ADD,uint16_t IN_DEVICE_ADD,uint8_t *DATAS,uint16_t LONG)
 {
 	HAL_I2C_Mem_Read(&hi2c1,DEVICE_ADD,IN_DEVICE_ADD,I2C_MEMADD_SIZE_8BIT,DATAS,LONG,100);
 }
diff --git a/f103c8t6_keil/MDK-ARM/MYDEIVERS/hread_interface.h b/f103c8t6_keil/MDK-ARM/MYDEIVERS/hread_interface.h
index 004011d..4c7edd1 100644
--- a/f103c8t6_keil/MDK-ARM/MYDEIVERS/hread_interface.h
+++ b/f103c8t6_keil/MDK-ARM/MYDEIVERS/hread_interface.h
@@ -13,6 +13,9 @@
 
 extern I2C_HandleTypeDef hi2c1;
 
-#define RUNLED(x) HAL_GPIO_WritePin(run_led_GPIO_Port, run_led_Pin, x)
+#define RUNLED(x)    HAL_GPIO_WritePin(run_led_GPIO_Port, run_led_Pin, x)
+#define RUNLED_TICK()  HAL_GPIO_TogglePin(run_led_GPIO_Port, run_led_Pin)
 
+void IIC_SAND_DATE(uint16_t DEVICE_ADD,uint16_t IN_DEVICE_ADD,uint8_t *DATAS,uint16_t LONG);
+void IIC_READ_DATE(uint16_t DEVICE_ADD,uint16_t IN_DEVICE_ADD,uint8_t *DATAS,uint16_t LONG);
 #endif /* HREAD_INTERFACE_H_ */
diff --git a/f103c8t6_keil/MDK-ARM/MYDEIVERS/mymain.c b/f103c8t6_keil/MDK-ARM/MYDEIVERS/mymain.c
index ae05cab..837446c 100644
--- a/f103c8t6_keil/MDK-ARM/MYDEIVERS/mymain.c
+++ b/f103c8t6_keil/MDK-ARM/MYDEIVERS/mymain.c
@@ -12,11 +12,19 @@ void mymain()
 uint32_t run_tick=0;
 	
 	OLED_Init();
-	OLED_ShowStr(0,0,"test");
+	
+	
+	
 	while(1)
 	{
 
 		
-
+		OLED_Cache_to_hardware();
+		if(HAL_GetTick()>run_tick)
+		{
+				run_tick+=500;
+				RUNLED_TICK();
+		}
+	
 	}
 }
diff --git a/f103c8t6_keil/MDK-ARM/MYDEIVERS/oled.c b/f103c8t6_keil/MDK-ARM/MYDEIVERS/oled.c
index cd71a9e..94cacb3 100644
--- a/f103c8t6_keil/MDK-ARM/MYDEIVERS/oled.c
+++ b/f103c8t6_keil/MDK-ARM/MYDEIVERS/oled.c
@@ -8,6 +8,127 @@
 
 #include "oled.h"
 
+/*
+通过IIC发送指令到OLED
+*/
+void OLED_WrCmd(unsigned char IIC_Command)
+{
+	uint8_t *pData;
+	pData = &IIC_Command;
+	IIC_SAND_DATE(OLED_ADDRESS,0x00,pData,1);
+}
+/*
+通过IIC发送数据到OLED
+*/
+void OLED_WrDat(unsigned char IIC_Data)
+{
+	uint8_t *pData;
+	pData = &IIC_Data;
+	IIC_SAND_DATE(OLED_ADDRESS,0x40,pData,1);
+}
+/*
+设置硬件内的光标
+*/
+void OLED_Set_Pos(unsigned char x, unsigned char y)
+{
+  OLED_WrCmd(    0xb0  +   7-y   );
+  OLED_WrCmd(((x&0xf0)>>4)|0x10);
+  OLED_WrCmd( (x&0x0f)    |0x00);
+}
+/*
+初始化硬件内存（显存）
+*/
+void OLED_Init_Display_Buffer(char a)
+{
+
+	for(unsigned char y = 0;y < Y_WIDTH_;y++)
+	{
+		OLED_Set_Pos(0,y);
+		for(unsigned char x = 0;x < X_WIDTH;x++)
+		{
+
+			OLED_WrDat(a);
+			//HAL_Delay(1);
+		}
+	}
+
+
+}
+/*
+设置屏幕亮度
+*/
+void OLED_Setting_luminance(unsigned char a)
+{
+	OLED_WrCmd(0x81);
+	OLED_WrCmd(a*2.55);
+
+}
+/*
+初始化OLED
+*/
+void OLED_Init(void)
+{
+	//HAL_Delay(200);
+	OLED_WrCmd(0xAE); //关闭显示
+	OLED_WrCmd(0xD5); //设置时钟分频因子,震荡频率
+	OLED_WrCmd(  80); //[3:0],分频因子;[7:4],震荡频率
+	OLED_WrCmd(0xA8); //设置驱动路数
+	OLED_WrCmd(0X3F); //默认0X3F(1/64)
+	OLED_WrCmd(0xD3); //设置显示偏移
+	OLED_WrCmd(0X00); //默认为0
+	OLED_WrCmd(0x40); //设置显示开始行 [5:0],行数.
+	OLED_WrCmd(0x8D); //电荷泵设置
+	OLED_WrCmd(0x14); //bit2，开启/关闭
+	OLED_WrCmd(0x20); //设置内存地址模式
+	OLED_WrCmd(0x02); //[1:0],00，列地址模式;01，行地址模式;10,页地址模式;默认10;
+	OLED_WrCmd(0xA1); //段重定义设置,bit0:0,0->0;1,0->127;
+	OLED_WrCmd(0xC0); //设置COM扫描方向;bit3:0,普通模式;1,重定义模式 COM[N-1]->COM0;N:驱动路数
+	//OLED_WrCmd(0xDA); //设置COM硬件引脚配置
+	//OLED_WrCmd(0x12); //[5:4]配置
+	//显示方向设置
+	//OLED_WrCmd(0xc8);//OLED_WrCmd(0xa0);
+	 //行扫描顺序：从上到下
+	 //列扫描顺序：从左到右
+	OLED_WrCmd(0xD9); //设置预充电周期
+	OLED_WrCmd(0xf1); //[3:0],PHASE 1;[7:4],PHASE 2;
+	OLED_WrCmd(0xDB); //设置VCOMH 电压倍率
+	OLED_WrCmd(0x30); //[6:4] 000,0.65*vcc;001,0.77*vcc;011,0.83*vcc;
+
+	OLED_WrCmd(0xA4); //全局显示开启;bit0:1,开启;0,关闭;(白屏/黑屏)
+	OLED_WrCmd(0xA6);
+	 //设置显示方式;bit0:1,反相显示;0,正常显示
+	OLED_WrCmd(0xAF); //开启显示
+	
+	OLED_Init_Display_Buffer(0);
+}
+
+/*************************************************************************************************************************************************************************************/
+/*硬件与软件之间的部分*/
+
+
+/*
+定义显存
+*/
+char OLED_buff[Y_WIDTH_][X_WIDTH];
+
+/*
+将显存发送到硬件
+*/
+void OLED_Cache_to_hardware()
+{
+	for(uint8_t y=0;y<Y_WIDTH_;y++)
+	{
+		OLED_Set_Pos(0,y);
+		for(uint8_t x=0;x<X_WIDTH;x++)
+		{
+			OLED_WrDat(OLED_buff[y][x]);
+		}
+	}
+}
+
+
+/*************************************************************************************************************************************************************************************/
+
 
 //16*16 ASCII字符集点阵
 const unsigned char asc2_1608[95][16]={
@@ -107,90 +228,6 @@ const unsigned char asc2_1608[95][16]={
 {0x00,0x00,0x40,0x02,0x40,0x02,0x3E,0xFC,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*"}",93*/
 {0x00,0x00,0x60,0x00,0x80,0x00,0x80,0x00,0x40,0x00,0x40,0x00,0x20,0x00,0x20,0x00},/*"~",94*/
 };
-
-
-
-void OLED_WrCmd(unsigned char IIC_Command)
-{
-	uint8_t *pData;
-	pData = &IIC_Command;
-	IIC_SAND_DATE(OLED_ADDRESS,0x00,pData,1);
-}
-
-void OLED_WrDat(unsigned char IIC_Data)
-{
-	uint8_t *pData;
-	pData = &IIC_Data;
-	IIC_SAND_DATE(OLED_ADDRESS,0x40,pData,1);
-}
-
-void OLED_Set_Pos(unsigned char x, unsigned char y)
-{
-  OLED_WrCmd(    0xb0  +   7-y   );
-  OLED_WrCmd(((x&0xf0)>>4)|0x10);
-  OLED_WrCmd( (x&0x0f)    |0x00);
-}
-
-void OLED_Init_Display_Buffer(char a)
-{
-
-	for(unsigned char y = 0;y < Y_WIDTH_;y++)
-	{
-		OLED_Set_Pos(0,y);
-		for(unsigned char x = 0;x < X_WIDTH;x++)
-		{
-
-			OLED_WrDat(a);
-			//HAL_Delay(1);
-		}
-	}
-
-
-}
-
-void OLED_Setting_luminance(unsigned char a)
-{
-	OLED_WrCmd(0x81);
-	OLED_WrCmd(a*2.55);
-
-}
-
-void OLED_Init(void)
-{
-	//HAL_Delay(200);
-	OLED_WrCmd(0xAE); //关闭显示
-	OLED_WrCmd(0xD5); //设置时钟分频因子,震荡频率
-	OLED_WrCmd(  80); //[3:0],分频因子;[7:4],震荡频率
-	OLED_WrCmd(0xA8); //设置驱动路数
-	OLED_WrCmd(0X3F); //默认0X3F(1/64)
-	OLED_WrCmd(0xD3); //设置显示偏移
-	OLED_WrCmd(0X00); //默认为0
-	OLED_WrCmd(0x40); //设置显示开始行 [5:0],行数.
-	OLED_WrCmd(0x8D); //电荷泵设置
-	OLED_WrCmd(0x14); //bit2，开启/关闭
-	OLED_WrCmd(0x20); //设置内存地址模式
-	OLED_WrCmd(0x02); //[1:0],00，列地址模式;01，行地址模式;10,页地址模式;默认10;
-	OLED_WrCmd(0xA1); //段重定义设置,bit0:0,0->0;1,0->127;
-	OLED_WrCmd(0xC0); //设置COM扫描方向;bit3:0,普通模式;1,重定义模式 COM[N-1]->COM0;N:驱动路数
-	//OLED_WrCmd(0xDA); //设置COM硬件引脚配置
-	//OLED_WrCmd(0x12); //[5:4]配置
-	//显示方向设置
-	//OLED_WrCmd(0xc8);//OLED_WrCmd(0xa0);
-	 //行扫描顺序：从上到下
-	 //列扫描顺序：从左到右
-	OLED_WrCmd(0xD9); //设置预充电周期
-	OLED_WrCmd(0xf1); //[3:0],PHASE 1;[7:4],PHASE 2;
-	OLED_WrCmd(0xDB); //设置VCOMH 电压倍率
-	OLED_WrCmd(0x30); //[6:4] 000,0.65*vcc;001,0.77*vcc;011,0.83*vcc;
-
-	OLED_WrCmd(0xA4); //全局显示开启;bit0:1,开启;0,关闭;(白屏/黑屏)
-	OLED_WrCmd(0xA6);
-	 //设置显示方式;bit0:1,反相显示;0,正常显示
-	OLED_WrCmd(0xAF); //开启显示
-}
-
-
-
 void OLED_ShowChar(unsigned char x,unsigned char y,unsigned char chr)
 {
 	OLED_Set_Pos(x,y);
diff --git a/f103c8t6_keil/MDK-ARM/MYDEIVERS/oled.h b/f103c8t6_keil/MDK-ARM/MYDEIVERS/oled.h
index cbf2ba0..105f866 100644
--- a/f103c8t6_keil/MDK-ARM/MYDEIVERS/oled.h
+++ b/f103c8t6_keil/MDK-ARM/MYDEIVERS/oled.h
@@ -10,6 +10,7 @@
 
 #include "main.h"
 #include "hread_interface.h"
+
 #define OLED_ADDRESS 0x78
 #define PI 3.141592654
 #define X_WIDTH 128
@@ -17,6 +18,9 @@
 #define Y_WIDTH_ 8
 
 void OLED_Init(void);
+
+void OLED_Cache_to_hardware();
+
 void OLED_ShowStr(unsigned char x,unsigned char y,char *str);
 
 #endif /* OLED_H_ */
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL.uvguix.wuwen b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL.uvguix.wuwen
index f5603e7..5235c3f 100644
--- a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL.uvguix.wuwen
+++ b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL.uvguix.wuwen
@@ -110,8 +110,8 @@
     <MDIClientArea>
       <RegID>0</RegID>
       <MDITabState>
-        <Len>483</Len>
-        <Data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ata>
+        <Len>1049</Len>
+        <Data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ata>
       </MDITabState>
     </MDIClientArea>
     <ViewEx>
@@ -1806,7 +1806,7 @@
         <Name>File</Name>
         <Buttons>
           <Len>2537</Len>
-          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+          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         <OriginalItems>
           <Len>1423</Len>
@@ -1822,7 +1822,7 @@
         <Name>Build</Name>
         <Buttons>
           <Len>986</Len>
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@@ -1862,7 +1862,7 @@
     <ActiveMDIGroup>0</ActiveMDIGroup>
     <MDIGroup>
       <Size>100</Size>
-      <ActiveTab>2</ActiveTab>
+      <ActiveTab>3</ActiveTab>
       <Doc>
         <Name>../Core/Src/main.c</Name>
         <ColumnNumber>3</ColumnNumber>
@@ -1874,9 +1874,9 @@
       </Doc>
       <Doc>
         <Name>.\MYDEIVERS\mymain.c</Name>
-        <ColumnNumber>2</ColumnNumber>
+        <ColumnNumber>29</ColumnNumber>
         <TopLine>1</TopLine>
-        <CurrentLine>13</CurrentLine>
+        <CurrentLine>22</CurrentLine>
         <Folding>1</Folding>
         <ContractedFolders></ContractedFolders>
         <PaneID>0</PaneID>
@@ -1890,6 +1890,51 @@
         <ContractedFolders></ContractedFolders>
         <PaneID>0</PaneID>
       </Doc>
+      <Doc>
+        <Name>.\MYDEIVERS\oled.c</Name>
+        <ColumnNumber>8</ColumnNumber>
+        <TopLine>89</TopLine>
+        <CurrentLine>115</CurrentLine>
+        <Folding>1</Folding>
+        <ContractedFolders></ContractedFolders>
+        <PaneID>0</PaneID>
+      </Doc>
+      <Doc>
+        <Name>.\MYDEIVERS\hread_interface.c</Name>
+        <ColumnNumber>0</ColumnNumber>
+        <TopLine>1</TopLine>
+        <CurrentLine>10</CurrentLine>
+        <Folding>1</Folding>
+        <ContractedFolders></ContractedFolders>
+        <PaneID>0</PaneID>
+      </Doc>
+      <Doc>
+        <Name>./MYDEIVERS/hread_interface.h</Name>
+        <ColumnNumber>92</ColumnNumber>
+        <TopLine>1</TopLine>
+        <CurrentLine>19</CurrentLine>
+        <Folding>1</Folding>
+        <ContractedFolders></ContractedFolders>
+        <PaneID>0</PaneID>
+      </Doc>
+      <Doc>
+        <Name>./MYDEIVERS/oled.h</Name>
+        <ColumnNumber>30</ColumnNumber>
+        <TopLine>1</TopLine>
+        <CurrentLine>22</CurrentLine>
+        <Folding>1</Folding>
+        <ContractedFolders></ContractedFolders>
+        <PaneID>0</PaneID>
+      </Doc>
+      <Doc>
+        <Name>.\MYDEIVERS\fonts.c</Name>
+        <ColumnNumber>0</ColumnNumber>
+        <TopLine>1</TopLine>
+        <CurrentLine>2</CurrentLine>
+        <Folding>1</Folding>
+        <ContractedFolders></ContractedFolders>
+        <PaneID>0</PaneID>
+      </Doc>
     </MDIGroup>
   </MDIGroups>
 
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL.uvoptx b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL.uvoptx
index eb11a7f..2e9c0c3 100644
--- a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL.uvoptx
+++ b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL.uvoptx
@@ -483,6 +483,18 @@
       <RteFlg>0</RteFlg>
       <bShared>0</bShared>
     </File>
+    <File>
+      <GroupNumber>5</GroupNumber>
+      <FileNumber>23</FileNumber>
+      <FileType>1</FileType>
+      <tvExp>0</tvExp>
+      <tvExpOptDlg>0</tvExpOptDlg>
+      <bDave2>0</bDave2>
+      <PathWithFileName>.\MYDEIVERS\fonts.c</PathWithFileName>
+      <FilenameWithoutPath>fonts.c</FilenameWithoutPath>
+      <RteFlg>0</RteFlg>
+      <bShared>0</bShared>
+    </File>
   </Group>
 
   <Group>
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL.uvprojx b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL.uvprojx
index 7d2ad81..6c94869 100644
--- a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL.uvprojx
+++ b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL.uvprojx
@@ -513,6 +513,11 @@
               <FileType>1</FileType>
               <FilePath>.\MYDEIVERS\oled.c</FilePath>
             </File>
+            <File>
+              <FileName>fonts.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>.\MYDEIVERS\fonts.c</FilePath>
+            </File>
           </Files>
         </Group>
         <Group>
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.axf b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.axf
index f1354c9..27aeba2 100644
Binary files a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.axf and b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.axf differ
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.build_log.htm b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.build_log.htm
index ccef55e..a5524f9 100644
--- a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.build_log.htm
+++ b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.build_log.htm
@@ -27,20 +27,14 @@ Project File Date:  04/15/2022
 <h2>Output:</h2>
 *** Using Compiler 'V5.06 update 7 (build 960)', folder: 'C:\Keil_v5\ARM\ARMCC\Bin'
 Build target 'f103c8t6_KEIL'
-compiling mymain.c...
-MYDEIVERS\mymain.h(14): warning:  #1295-D: Deprecated declaration mymain - give arg types
-  void mymain();
-MYDEIVERS\mymain.c(12): warning:  #177-D: variable "run_tick"  was declared but never referenced
-  uint32_t run_tick=0;
-MYDEIVERS\mymain.c: 2 warnings, 0 errors
-compiling main.c...
-./MYDEIVERS/mymain.h(14): warning:  #1295-D: Deprecated declaration mymain - give arg types
-  void mymain();
-../Core/Src/main.c: 1 warning, 0 errors
+compiling oled.c...
+MYDEIVERS\oled.h(22): warning:  #1295-D: Deprecated declaration OLED_Cache_to_hardware - give arg types
+  void OLED_Cache_to_hardware();
+MYDEIVERS\oled.c: 1 warning, 0 errors
 linking...
-Program Size: Code=4664 RO-data=1812 RW-data=16 ZI-data=1720  
+Program Size: Code=4656 RO-data=292 RW-data=16 ZI-data=2744  
 FromELF: creating hex file...
-"f103c8t6_KEIL\f103c8t6_KEIL.axf" - 0 Error(s), 3 Warning(s).
+"f103c8t6_KEIL\f103c8t6_KEIL.axf" - 0 Error(s), 1 Warning(s).
 
 <h2>Software Packages used:</h2>
 
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.hex b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.hex
index ca1689b..5bb1158 100644
--- a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.hex
+++ b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.hex
@@ -1,8 +1,8 @@
 :020000040800F2
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+:10000000C80A002089010008F3100008C50D000887
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 :10004000A3010008A3010008A3010008A301000800
 :10005000A3010008A3010008A3010008A3010008F0
 :10006000A3010008A3010008A3010008A3010008E0
@@ -17,17 +17,17 @@
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+:100120001412000034120000103A24BF78C878C1BD
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@@ -38,7 +38,7 @@
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+:10131000FFF7B0F8F2E70000000C01400000000009
+:101320000000000001020304060708090000000095
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+:041360000024F40071
 :04000005080000ED02
 :00000001FF
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.htm b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.htm
index 7333356..3384d70 100644
--- a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.htm
+++ b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.htm
@@ -3,11 +3,11 @@
 <title>Static Call Graph - [f103c8t6_KEIL\f103c8t6_KEIL.axf]</title></head>
 <body><HR>
 <H1>Static Call Graph for image f103c8t6_KEIL\f103c8t6_KEIL.axf</H1><HR>
-<BR><P>#&#060CALLGRAPH&#062# ARM Linker, 5060960: Last Updated: Fri Apr 15 14:18:48 2022
+<BR><P>#&#060CALLGRAPH&#062# ARM Linker, 5060960: Last Updated: Fri Apr 15 17:38:20 2022
 <BR><P>
-<H3>Maximum Stack Usage =        208 bytes + Unknown(Functions without stacksize, Cycles, Untraceable Function Pointers)</H3><H3>
+<H3>Maximum Stack Usage =        192 bytes + Unknown(Functions without stacksize, Cycles, Untraceable Function Pointers)</H3><H3>
 Call chain for Maximum Stack Depth:</H3>
-__rt_entry_main &rArr; main &rArr; mymain &rArr; OLED_ShowStr &rArr; OLED_ShowChar &rArr; OLED_Set_Pos &rArr; OLED_WrCmd &rArr; IIC_SAND_DATE &rArr; HAL_I2C_Mem_Write &rArr; I2C_RequestMemoryWrite &rArr; I2C_WaitOnMasterAddressFlagUntilTimeout
+__rt_entry_main &rArr; main &rArr; mymain &rArr; OLED_Cache_to_hardware &rArr; OLED_Set_Pos &rArr; OLED_WrCmd &rArr; IIC_SAND_DATE &rArr; HAL_I2C_Mem_Write &rArr; I2C_RequestMemoryWrite &rArr; I2C_WaitOnMasterAddressFlagUntilTimeout
 <P>
 <H3>
 Functions with no stack information
@@ -102,9 +102,9 @@ Global Symbols
 <BR><BR>[Calls]<UL><LI><a href="#[3c]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__rt_entry
 </UL>
 
-<P><STRONG><a name="[70]"></a>__scatterload_rt2_thumb_only</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, __scatter.o(!!!scatter), UNUSED)
+<P><STRONG><a name="[71]"></a>__scatterload_rt2_thumb_only</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, __scatter.o(!!!scatter), UNUSED)
 
-<P><STRONG><a name="[71]"></a>__scatterload_null</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, __scatter.o(!!!scatter), UNUSED)
+<P><STRONG><a name="[72]"></a>__scatterload_null</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, __scatter.o(!!!scatter), UNUSED)
 
 <P><STRONG><a name="[3e]"></a>__scatterload_copy</STRONG> (Thumb, 26 bytes, Stack size unknown bytes, __scatter_copy.o(!!handler_copy), UNUSED)
 <BR><BR>[Calls]<UL><LI><a href="#[3e]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__scatterload_copy
@@ -112,80 +112,80 @@ Global Symbols
 <BR>[Called By]<UL><LI><a href="#[3e]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__scatterload_copy
 </UL>
 
-<P><STRONG><a name="[72]"></a>__scatterload_zeroinit</STRONG> (Thumb, 28 bytes, Stack size unknown bytes, __scatter_zi.o(!!handler_zi), UNUSED)
+<P><STRONG><a name="[73]"></a>__scatterload_zeroinit</STRONG> (Thumb, 28 bytes, Stack size unknown bytes, __scatter_zi.o(!!handler_zi), UNUSED)
 
 <P><STRONG><a name="[42]"></a>__rt_lib_init</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit.o(.ARM.Collect$$libinit$$00000000))
 <BR><BR>[Called By]<UL><LI><a href="#[41]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__rt_entry_li
 </UL>
 
-<P><STRONG><a name="[73]"></a>__rt_lib_init_alloca_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000002E))
+<P><STRONG><a name="[74]"></a>__rt_lib_init_alloca_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000002E))
 
-<P><STRONG><a name="[74]"></a>__rt_lib_init_argv_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000002C))
+<P><STRONG><a name="[75]"></a>__rt_lib_init_argv_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000002C))
 
-<P><STRONG><a name="[75]"></a>__rt_lib_init_atexit_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000001B))
+<P><STRONG><a name="[76]"></a>__rt_lib_init_atexit_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000001B))
 
-<P><STRONG><a name="[76]"></a>__rt_lib_init_clock_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000021))
+<P><STRONG><a name="[77]"></a>__rt_lib_init_clock_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000021))
 
-<P><STRONG><a name="[77]"></a>__rt_lib_init_cpp_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000032))
+<P><STRONG><a name="[78]"></a>__rt_lib_init_cpp_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000032))
 
-<P><STRONG><a name="[78]"></a>__rt_lib_init_exceptions_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000030))
+<P><STRONG><a name="[79]"></a>__rt_lib_init_exceptions_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000030))
 
-<P><STRONG><a name="[79]"></a>__rt_lib_init_fp_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000002))
+<P><STRONG><a name="[7a]"></a>__rt_lib_init_fp_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000002))
 
-<P><STRONG><a name="[7a]"></a>__rt_lib_init_fp_trap_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000001F))
+<P><STRONG><a name="[7b]"></a>__rt_lib_init_fp_trap_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000001F))
 
-<P><STRONG><a name="[7b]"></a>__rt_lib_init_getenv_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000023))
+<P><STRONG><a name="[7c]"></a>__rt_lib_init_getenv_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000023))
 
-<P><STRONG><a name="[7c]"></a>__rt_lib_init_heap_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000000A))
+<P><STRONG><a name="[7d]"></a>__rt_lib_init_heap_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000000A))
 
-<P><STRONG><a name="[7d]"></a>__rt_lib_init_lc_collate_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000011))
+<P><STRONG><a name="[7e]"></a>__rt_lib_init_lc_collate_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000011))
 
-<P><STRONG><a name="[7e]"></a>__rt_lib_init_lc_ctype_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000013))
+<P><STRONG><a name="[7f]"></a>__rt_lib_init_lc_ctype_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000013))
 
-<P><STRONG><a name="[7f]"></a>__rt_lib_init_lc_monetary_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000015))
+<P><STRONG><a name="[80]"></a>__rt_lib_init_lc_monetary_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000015))
 
-<P><STRONG><a name="[80]"></a>__rt_lib_init_lc_numeric_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000017))
+<P><STRONG><a name="[81]"></a>__rt_lib_init_lc_numeric_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000017))
 
-<P><STRONG><a name="[81]"></a>__rt_lib_init_lc_time_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000019))
+<P><STRONG><a name="[82]"></a>__rt_lib_init_lc_time_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000019))
 
-<P><STRONG><a name="[82]"></a>__rt_lib_init_preinit_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000004))
+<P><STRONG><a name="[83]"></a>__rt_lib_init_preinit_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000004))
 
-<P><STRONG><a name="[83]"></a>__rt_lib_init_rand_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000000E))
+<P><STRONG><a name="[84]"></a>__rt_lib_init_rand_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000000E))
 
-<P><STRONG><a name="[84]"></a>__rt_lib_init_return</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000033))
+<P><STRONG><a name="[85]"></a>__rt_lib_init_return</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000033))
 
-<P><STRONG><a name="[85]"></a>__rt_lib_init_signal_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000001D))
+<P><STRONG><a name="[86]"></a>__rt_lib_init_signal_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000001D))
 
-<P><STRONG><a name="[86]"></a>__rt_lib_init_stdio_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000025))
+<P><STRONG><a name="[87]"></a>__rt_lib_init_stdio_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000025))
 
-<P><STRONG><a name="[87]"></a>__rt_lib_init_user_alloc_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000000C))
+<P><STRONG><a name="[88]"></a>__rt_lib_init_user_alloc_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000000C))
 
 <P><STRONG><a name="[47]"></a>__rt_lib_shutdown</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libshutdown.o(.ARM.Collect$$libshutdown$$00000000))
 <BR><BR>[Called By]<UL><LI><a href="#[46]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__rt_exit_ls
 </UL>
 
-<P><STRONG><a name="[88]"></a>__rt_lib_shutdown_cpp_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$00000004))
+<P><STRONG><a name="[89]"></a>__rt_lib_shutdown_cpp_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$00000004))
 
-<P><STRONG><a name="[89]"></a>__rt_lib_shutdown_fini_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$00000002))
+<P><STRONG><a name="[8a]"></a>__rt_lib_shutdown_fini_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$00000002))
 
-<P><STRONG><a name="[8a]"></a>__rt_lib_shutdown_fp_trap_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$00000009))
+<P><STRONG><a name="[8b]"></a>__rt_lib_shutdown_fp_trap_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$00000009))
 
-<P><STRONG><a name="[8b]"></a>__rt_lib_shutdown_heap_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$00000011))
+<P><STRONG><a name="[8c]"></a>__rt_lib_shutdown_heap_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$00000011))
 
-<P><STRONG><a name="[8c]"></a>__rt_lib_shutdown_return</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$00000012))
+<P><STRONG><a name="[8d]"></a>__rt_lib_shutdown_return</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$00000012))
 
-<P><STRONG><a name="[8d]"></a>__rt_lib_shutdown_signal_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$0000000C))
+<P><STRONG><a name="[8e]"></a>__rt_lib_shutdown_signal_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$0000000C))
 
-<P><STRONG><a name="[8e]"></a>__rt_lib_shutdown_stdio_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$00000006))
+<P><STRONG><a name="[8f]"></a>__rt_lib_shutdown_stdio_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$00000006))
 
-<P><STRONG><a name="[8f]"></a>__rt_lib_shutdown_user_alloc_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$0000000E))
+<P><STRONG><a name="[90]"></a>__rt_lib_shutdown_user_alloc_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$0000000E))
 
 <P><STRONG><a name="[3c]"></a>__rt_entry</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, __rtentry.o(.ARM.Collect$$rtentry$$00000000))
 <BR><BR>[Called By]<UL><LI><a href="#[3d]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__scatterload_rt2
 <LI><a href="#[3a]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__main
 </UL>
 
-<P><STRONG><a name="[90]"></a>__rt_entry_presh_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, __rtentry2.o(.ARM.Collect$$rtentry$$00000002))
+<P><STRONG><a name="[91]"></a>__rt_entry_presh_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, __rtentry2.o(.ARM.Collect$$rtentry$$00000002))
 
 <P><STRONG><a name="[3f]"></a>__rt_entry_sh</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, __rtentry4.o(.ARM.Collect$$rtentry$$00000004))
 <BR><BR>[Stack]<UL><LI>Max Depth = 8 + Unknown Stack Size
@@ -198,17 +198,17 @@ Global Symbols
 <BR><BR>[Calls]<UL><LI><a href="#[42]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__rt_lib_init
 </UL>
 
-<P><STRONG><a name="[91]"></a>__rt_entry_postsh_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, __rtentry2.o(.ARM.Collect$$rtentry$$00000009))
+<P><STRONG><a name="[92]"></a>__rt_entry_postsh_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, __rtentry2.o(.ARM.Collect$$rtentry$$00000009))
 
 <P><STRONG><a name="[43]"></a>__rt_entry_main</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, __rtentry2.o(.ARM.Collect$$rtentry$$0000000D))
-<BR><BR>[Stack]<UL><LI>Max Depth = 208 + Unknown Stack Size
-<LI>Call Chain = __rt_entry_main &rArr; main &rArr; mymain &rArr; OLED_ShowStr &rArr; OLED_ShowChar &rArr; OLED_Set_Pos &rArr; OLED_WrCmd &rArr; IIC_SAND_DATE &rArr; HAL_I2C_Mem_Write &rArr; I2C_RequestMemoryWrite &rArr; I2C_WaitOnMasterAddressFlagUntilTimeout
+<BR><BR>[Stack]<UL><LI>Max Depth = 192 + Unknown Stack Size
+<LI>Call Chain = __rt_entry_main &rArr; main &rArr; mymain &rArr; OLED_Cache_to_hardware &rArr; OLED_Set_Pos &rArr; OLED_WrCmd &rArr; IIC_SAND_DATE &rArr; HAL_I2C_Mem_Write &rArr; I2C_RequestMemoryWrite &rArr; I2C_WaitOnMasterAddressFlagUntilTimeout
 </UL>
 <BR>[Calls]<UL><LI><a href="#[44]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;main
 <LI><a href="#[45]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;exit
 </UL>
 
-<P><STRONG><a name="[92]"></a>__rt_entry_postli_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, __rtentry2.o(.ARM.Collect$$rtentry$$0000000C))
+<P><STRONG><a name="[93]"></a>__rt_entry_postli_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, __rtentry2.o(.ARM.Collect$$rtentry$$0000000C))
 
 <P><STRONG><a name="[4c]"></a>__rt_exit</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, rtexit.o(.ARM.Collect$$rtexit$$00000000))
 <BR><BR>[Called By]<UL><LI><a href="#[45]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;exit
@@ -218,7 +218,7 @@ Global Symbols
 <BR><BR>[Calls]<UL><LI><a href="#[47]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__rt_lib_shutdown
 </UL>
 
-<P><STRONG><a name="[93]"></a>__rt_exit_prels_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, rtexit2.o(.ARM.Collect$$rtexit$$00000002))
+<P><STRONG><a name="[94]"></a>__rt_exit_prels_1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, rtexit2.o(.ARM.Collect$$rtexit$$00000002))
 
 <P><STRONG><a name="[48]"></a>__rt_exit_exit</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, rtexit2.o(.ARM.Collect$$rtexit$$00000004))
 <BR><BR>[Calls]<UL><LI><a href="#[49]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_sys_exit
@@ -370,17 +370,17 @@ Global Symbols
 <BR>[Called By]<UL><LI><a href="#[6d]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;SystemClock_Config
 </UL>
 
-<P><STRONG><a name="[94]"></a>__aeabi_memclr8</STRONG> (Thumb, 0 bytes, Stack size 4 bytes, rt_memclr_w.o(.text), UNUSED)
+<P><STRONG><a name="[95]"></a>__aeabi_memclr8</STRONG> (Thumb, 0 bytes, Stack size 4 bytes, rt_memclr_w.o(.text), UNUSED)
 
-<P><STRONG><a name="[95]"></a>__rt_memclr_w</STRONG> (Thumb, 78 bytes, Stack size 4 bytes, rt_memclr_w.o(.text), UNUSED)
+<P><STRONG><a name="[96]"></a>__rt_memclr_w</STRONG> (Thumb, 78 bytes, Stack size 4 bytes, rt_memclr_w.o(.text), UNUSED)
 
-<P><STRONG><a name="[96]"></a>_memset_w</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, rt_memclr_w.o(.text), UNUSED)
+<P><STRONG><a name="[97]"></a>_memset_w</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, rt_memclr_w.o(.text), UNUSED)
 
-<P><STRONG><a name="[97]"></a>__use_two_region_memory</STRONG> (Thumb, 2 bytes, Stack size 0 bytes, heapauxi.o(.text), UNUSED)
+<P><STRONG><a name="[98]"></a>__use_two_region_memory</STRONG> (Thumb, 2 bytes, Stack size 0 bytes, heapauxi.o(.text), UNUSED)
 
-<P><STRONG><a name="[98]"></a>__rt_heap_escrow$2region</STRONG> (Thumb, 2 bytes, Stack size 0 bytes, heapauxi.o(.text), UNUSED)
+<P><STRONG><a name="[99]"></a>__rt_heap_escrow$2region</STRONG> (Thumb, 2 bytes, Stack size 0 bytes, heapauxi.o(.text), UNUSED)
 
-<P><STRONG><a name="[99]"></a>__rt_heap_expand$2region</STRONG> (Thumb, 2 bytes, Stack size 0 bytes, heapauxi.o(.text), UNUSED)
+<P><STRONG><a name="[9a]"></a>__rt_heap_expand$2region</STRONG> (Thumb, 2 bytes, Stack size 0 bytes, heapauxi.o(.text), UNUSED)
 
 <P><STRONG><a name="[40]"></a>__user_setup_stackheap</STRONG> (Thumb, 74 bytes, Stack size 8 bytes, sys_stackheap_outer.o(.text))
 <BR><BR>[Stack]<UL><LI>Max Depth = 8 + Unknown Stack Size
@@ -401,21 +401,21 @@ Global Symbols
 <BR>[Called By]<UL><LI><a href="#[43]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__rt_entry_main
 </UL>
 
-<P><STRONG><a name="[9a]"></a>__user_libspace</STRONG> (Thumb, 8 bytes, Stack size 0 bytes, libspace.o(.text), UNUSED)
+<P><STRONG><a name="[9b]"></a>__user_libspace</STRONG> (Thumb, 8 bytes, Stack size 0 bytes, libspace.o(.text), UNUSED)
 
 <P><STRONG><a name="[4a]"></a>__user_perproc_libspace</STRONG> (Thumb, 0 bytes, Stack size 0 bytes, libspace.o(.text))
 <BR><BR>[Called By]<UL><LI><a href="#[40]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__user_setup_stackheap
 </UL>
 
-<P><STRONG><a name="[9b]"></a>__user_perthread_libspace</STRONG> (Thumb, 0 bytes, Stack size 0 bytes, libspace.o(.text), UNUSED)
+<P><STRONG><a name="[9c]"></a>__user_perthread_libspace</STRONG> (Thumb, 0 bytes, Stack size 0 bytes, libspace.o(.text), UNUSED)
 
 <P><STRONG><a name="[49]"></a>_sys_exit</STRONG> (Thumb, 8 bytes, Stack size 0 bytes, sys_exit.o(.text))
 <BR><BR>[Called By]<UL><LI><a href="#[48]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__rt_exit_exit
 </UL>
 
-<P><STRONG><a name="[9c]"></a>__I$use$semihosting</STRONG> (Thumb, 0 bytes, Stack size 0 bytes, use_no_semi.o(.text), UNUSED)
+<P><STRONG><a name="[9d]"></a>__I$use$semihosting</STRONG> (Thumb, 0 bytes, Stack size 0 bytes, use_no_semi.o(.text), UNUSED)
 
-<P><STRONG><a name="[9d]"></a>__use_no_semihosting_swi</STRONG> (Thumb, 2 bytes, Stack size 0 bytes, use_no_semi.o(.text), UNUSED)
+<P><STRONG><a name="[9e]"></a>__use_no_semihosting_swi</STRONG> (Thumb, 2 bytes, Stack size 0 bytes, use_no_semi.o(.text), UNUSED)
 
 <P><STRONG><a name="[7]"></a>BusFault_Handler</STRONG> (Thumb, 2 bytes, Stack size 0 bytes, stm32f1xx_it.o(i.BusFault_Handler))
 <BR><BR>[Calls]<UL><LI><a href="#[7]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;BusFault_Handler
@@ -424,7 +424,7 @@ Global Symbols
 </UL>
 <BR>[Address Reference Count : 1]<UL><LI> startup_stm32f103xb.o(RESET)
 </UL>
-<P><STRONG><a name="[9e]"></a>__semihosting_library_function</STRONG> (Thumb, 0 bytes, Stack size 0 bytes, indicate_semi.o(.text), UNUSED)
+<P><STRONG><a name="[9f]"></a>__semihosting_library_function</STRONG> (Thumb, 0 bytes, Stack size 0 bytes, indicate_semi.o(.text), UNUSED)
 
 <P><STRONG><a name="[a]"></a>DebugMon_Handler</STRONG> (Thumb, 2 bytes, Stack size 0 bytes, stm32f1xx_it.o(i.DebugMon_Handler))
 <BR>[Address Reference Count : 1]<UL><LI> startup_stm32f103xb.o(RESET)
@@ -436,6 +436,10 @@ Global Symbols
 <LI><a href="#[64]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;MX_GPIO_Init
 </UL>
 
+<P><STRONG><a name="[70]"></a>HAL_GPIO_TogglePin</STRONG> (Thumb, 16 bytes, Stack size 0 bytes, stm32f1xx_hal_gpio.o(i.HAL_GPIO_TogglePin))
+<BR><BR>[Called By]<UL><LI><a href="#[6f]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;mymain
+</UL>
+
 <P><STRONG><a name="[65]"></a>HAL_GPIO_WritePin</STRONG> (Thumb, 10 bytes, Stack size 0 bytes, stm32f1xx_hal_gpio.o(i.HAL_GPIO_WritePin))
 <BR><BR>[Called By]<UL><LI><a href="#[64]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;MX_GPIO_Init
 </UL>
@@ -446,6 +450,7 @@ Global Symbols
 <LI><a href="#[61]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;I2C_WaitOnMasterAddressFlagUntilTimeout
 <LI><a href="#[52]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;I2C_WaitOnFlagUntilTimeout
 <LI><a href="#[55]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;I2C_WaitOnBTFFlagUntilTimeout
+<LI><a href="#[6f]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;mymain
 <LI><a href="#[60]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;HAL_RCC_OscConfig
 <LI><a href="#[5e]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;HAL_RCC_ClockConfig
 </UL>
@@ -569,8 +574,8 @@ Global Symbols
 </UL>
 <BR>[Calls]<UL><LI><a href="#[50]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;HAL_I2C_Mem_Write
 </UL>
-<BR>[Called By]<UL><LI><a href="#[6a]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_WrDat
-<LI><a href="#[67]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_WrCmd
+<BR>[Called By]<UL><LI><a href="#[68]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_WrDat
+<LI><a href="#[6a]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_WrCmd
 </UL>
 
 <P><STRONG><a name="[6]"></a>MemManage_Handler</STRONG> (Thumb, 2 bytes, Stack size 0 bytes, stm32f1xx_it.o(i.MemManage_Handler))
@@ -587,54 +592,53 @@ Global Symbols
 </UL>
 <BR>[Address Reference Count : 1]<UL><LI> startup_stm32f103xb.o(RESET)
 </UL>
-<P><STRONG><a name="[66]"></a>OLED_Init</STRONG> (Thumb, 132 bytes, Stack size 8 bytes, oled.o(i.OLED_Init))
+<P><STRONG><a name="[66]"></a>OLED_Cache_to_hardware</STRONG> (Thumb, 48 bytes, Stack size 24 bytes, oled.o(i.OLED_Cache_to_hardware))
+<BR><BR>[Stack]<UL><LI>Max Depth = 192<LI>Call Chain = OLED_Cache_to_hardware &rArr; OLED_Set_Pos &rArr; OLED_WrCmd &rArr; IIC_SAND_DATE &rArr; HAL_I2C_Mem_Write &rArr; I2C_RequestMemoryWrite &rArr; I2C_WaitOnMasterAddressFlagUntilTimeout
+</UL>
+<BR>[Calls]<UL><LI><a href="#[68]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_WrDat
+<LI><a href="#[67]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_Set_Pos
+</UL>
+<BR>[Called By]<UL><LI><a href="#[6f]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;mymain
+</UL>
+
+<P><STRONG><a name="[69]"></a>OLED_Init</STRONG> (Thumb, 138 bytes, Stack size 8 bytes, oled.o(i.OLED_Init))
 <BR><BR>[Stack]<UL><LI>Max Depth = 168<LI>Call Chain = OLED_Init &rArr; OLED_WrCmd &rArr; IIC_SAND_DATE &rArr; HAL_I2C_Mem_Write &rArr; I2C_RequestMemoryWrite &rArr; I2C_WaitOnMasterAddressFlagUntilTimeout
 </UL>
-<BR>[Calls]<UL><LI><a href="#[67]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_WrCmd
+<BR>[Calls]<UL><LI><a href="#[6a]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_WrCmd
 </UL>
 <BR>[Called By]<UL><LI><a href="#[6f]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;mymain
 </UL>
 
-<P><STRONG><a name="[68]"></a>OLED_Set_Pos</STRONG> (Thumb, 36 bytes, Stack size 8 bytes, oled.o(i.OLED_Set_Pos))
+<P><STRONG><a name="[6b]"></a>OLED_Init_Display_Buffer</STRONG> (Thumb, 40 bytes, Stack size 16 bytes, oled.o(i.OLED_Init_Display_Buffer), UNUSED)
+<BR><BR>[Calls]<UL><LI><a href="#[68]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_WrDat
+<LI><a href="#[67]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_Set_Pos
+</UL>
+
+<P><STRONG><a name="[67]"></a>OLED_Set_Pos</STRONG> (Thumb, 36 bytes, Stack size 8 bytes, oled.o(i.OLED_Set_Pos))
 <BR><BR>[Stack]<UL><LI>Max Depth = 168<LI>Call Chain = OLED_Set_Pos &rArr; OLED_WrCmd &rArr; IIC_SAND_DATE &rArr; HAL_I2C_Mem_Write &rArr; I2C_RequestMemoryWrite &rArr; I2C_WaitOnMasterAddressFlagUntilTimeout
 </UL>
-<BR>[Calls]<UL><LI><a href="#[67]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_WrCmd
+<BR>[Calls]<UL><LI><a href="#[6a]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_WrCmd
 </UL>
-<BR>[Called By]<UL><LI><a href="#[69]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_ShowChar
+<BR>[Called By]<UL><LI><a href="#[6b]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_Init_Display_Buffer
+<LI><a href="#[66]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_Cache_to_hardware
 </UL>
 
-<P><STRONG><a name="[69]"></a>OLED_ShowChar</STRONG> (Thumb, 88 bytes, Stack size 24 bytes, oled.o(i.OLED_ShowChar))
-<BR><BR>[Stack]<UL><LI>Max Depth = 192<LI>Call Chain = OLED_ShowChar &rArr; OLED_Set_Pos &rArr; OLED_WrCmd &rArr; IIC_SAND_DATE &rArr; HAL_I2C_Mem_Write &rArr; I2C_RequestMemoryWrite &rArr; I2C_WaitOnMasterAddressFlagUntilTimeout
-</UL>
-<BR>[Calls]<UL><LI><a href="#[6a]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_WrDat
-<LI><a href="#[68]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_Set_Pos
-</UL>
-<BR>[Called By]<UL><LI><a href="#[6b]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_ShowStr
-</UL>
-
-<P><STRONG><a name="[6b]"></a>OLED_ShowStr</STRONG> (Thumb, 48 bytes, Stack size 16 bytes, oled.o(i.OLED_ShowStr))
-<BR><BR>[Stack]<UL><LI>Max Depth = 208<LI>Call Chain = OLED_ShowStr &rArr; OLED_ShowChar &rArr; OLED_Set_Pos &rArr; OLED_WrCmd &rArr; IIC_SAND_DATE &rArr; HAL_I2C_Mem_Write &rArr; I2C_RequestMemoryWrite &rArr; I2C_WaitOnMasterAddressFlagUntilTimeout
-</UL>
-<BR>[Calls]<UL><LI><a href="#[69]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_ShowChar
-</UL>
-<BR>[Called By]<UL><LI><a href="#[6f]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;mymain
-</UL>
-
-<P><STRONG><a name="[67]"></a>OLED_WrCmd</STRONG> (Thumb, 16 bytes, Stack size 8 bytes, oled.o(i.OLED_WrCmd))
+<P><STRONG><a name="[6a]"></a>OLED_WrCmd</STRONG> (Thumb, 16 bytes, Stack size 8 bytes, oled.o(i.OLED_WrCmd))
 <BR><BR>[Stack]<UL><LI>Max Depth = 160<LI>Call Chain = OLED_WrCmd &rArr; IIC_SAND_DATE &rArr; HAL_I2C_Mem_Write &rArr; I2C_RequestMemoryWrite &rArr; I2C_WaitOnMasterAddressFlagUntilTimeout
 </UL>
 <BR>[Calls]<UL><LI><a href="#[63]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;IIC_SAND_DATE
 </UL>
-<BR>[Called By]<UL><LI><a href="#[68]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_Set_Pos
-<LI><a href="#[66]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_Init
+<BR>[Called By]<UL><LI><a href="#[67]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_Set_Pos
+<LI><a href="#[69]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_Init
 </UL>
 
-<P><STRONG><a name="[6a]"></a>OLED_WrDat</STRONG> (Thumb, 16 bytes, Stack size 8 bytes, oled.o(i.OLED_WrDat))
+<P><STRONG><a name="[68]"></a>OLED_WrDat</STRONG> (Thumb, 16 bytes, Stack size 8 bytes, oled.o(i.OLED_WrDat))
 <BR><BR>[Stack]<UL><LI>Max Depth = 160<LI>Call Chain = OLED_WrDat &rArr; IIC_SAND_DATE &rArr; HAL_I2C_Mem_Write &rArr; I2C_RequestMemoryWrite &rArr; I2C_WaitOnMasterAddressFlagUntilTimeout
 </UL>
 <BR>[Calls]<UL><LI><a href="#[63]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;IIC_SAND_DATE
 </UL>
-<BR>[Called By]<UL><LI><a href="#[69]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_ShowChar
+<BR>[Called By]<UL><LI><a href="#[6b]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_Init_Display_Buffer
+<LI><a href="#[66]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_Cache_to_hardware
 </UL>
 
 <P><STRONG><a name="[b]"></a>PendSV_Handler</STRONG> (Thumb, 2 bytes, Stack size 0 bytes, stm32f1xx_it.o(i.PendSV_Handler))
@@ -669,7 +673,7 @@ Global Symbols
 <BR>[Address Reference Count : 1]<UL><LI> startup_stm32f103xb.o(RESET)
 </UL>
 <P><STRONG><a name="[44]"></a>main</STRONG> (Thumb, 58 bytes, Stack size 0 bytes, main.o(i.main))
-<BR><BR>[Stack]<UL><LI>Max Depth = 208<LI>Call Chain = main &rArr; mymain &rArr; OLED_ShowStr &rArr; OLED_ShowChar &rArr; OLED_Set_Pos &rArr; OLED_WrCmd &rArr; IIC_SAND_DATE &rArr; HAL_I2C_Mem_Write &rArr; I2C_RequestMemoryWrite &rArr; I2C_WaitOnMasterAddressFlagUntilTimeout
+<BR><BR>[Stack]<UL><LI>Max Depth = 192<LI>Call Chain = main &rArr; mymain &rArr; OLED_Cache_to_hardware &rArr; OLED_Set_Pos &rArr; OLED_WrCmd &rArr; IIC_SAND_DATE &rArr; HAL_I2C_Mem_Write &rArr; I2C_RequestMemoryWrite &rArr; I2C_WaitOnMasterAddressFlagUntilTimeout
 </UL>
 <BR>[Calls]<UL><LI><a href="#[6f]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;mymain
 <LI><a href="#[57]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;HAL_Init
@@ -680,11 +684,13 @@ Global Symbols
 <BR>[Called By]<UL><LI><a href="#[43]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__rt_entry_main
 </UL>
 
-<P><STRONG><a name="[6f]"></a>mymain</STRONG> (Thumb, 16 bytes, Stack size 0 bytes, mymain.o(i.mymain))
-<BR><BR>[Stack]<UL><LI>Max Depth = 208<LI>Call Chain = mymain &rArr; OLED_ShowStr &rArr; OLED_ShowChar &rArr; OLED_Set_Pos &rArr; OLED_WrCmd &rArr; IIC_SAND_DATE &rArr; HAL_I2C_Mem_Write &rArr; I2C_RequestMemoryWrite &rArr; I2C_WaitOnMasterAddressFlagUntilTimeout
+<P><STRONG><a name="[6f]"></a>mymain</STRONG> (Thumb, 38 bytes, Stack size 0 bytes, mymain.o(i.mymain))
+<BR><BR>[Stack]<UL><LI>Max Depth = 192<LI>Call Chain = mymain &rArr; OLED_Cache_to_hardware &rArr; OLED_Set_Pos &rArr; OLED_WrCmd &rArr; IIC_SAND_DATE &rArr; HAL_I2C_Mem_Write &rArr; I2C_RequestMemoryWrite &rArr; I2C_WaitOnMasterAddressFlagUntilTimeout
 </UL>
-<BR>[Calls]<UL><LI><a href="#[6b]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_ShowStr
-<LI><a href="#[66]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_Init
+<BR>[Calls]<UL><LI><a href="#[51]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;HAL_GetTick
+<LI><a href="#[70]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;HAL_GPIO_TogglePin
+<LI><a href="#[69]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_Init
+<LI><a href="#[66]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;OLED_Cache_to_hardware
 </UL>
 <BR>[Called By]<UL><LI><a href="#[44]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;main
 </UL>
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.lnp b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.lnp
index 5f944ff..7910d99 100644
--- a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.lnp
+++ b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.lnp
@@ -21,6 +21,7 @@
 "f103c8t6_keil\hread_interface.o"
 "f103c8t6_keil\mymain.o"
 "f103c8t6_keil\oled.o"
+"f103c8t6_keil\fonts.o"
 --strict --scatter "f103c8t6_KEIL\f103c8t6_KEIL.sct"
 --summary_stderr --info summarysizes --map --load_addr_map_info --xref --callgraph --symbols
 --info sizes --info totals --info unused --info veneers
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.map b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.map
index 524ee20..6af853b 100644
--- a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.map
+++ b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL.map
@@ -285,8 +285,14 @@ Section Cross References
     hread_interface.o(i.IIC_SAND_DATE) refers to stm32f1xx_hal_i2c.o(i.HAL_I2C_Mem_Write) for HAL_I2C_Mem_Write
     hread_interface.o(i.IIC_SAND_DATE) refers to main.o(.bss) for hi2c1
     mymain.o(i.mymain) refers to oled.o(i.OLED_Init) for OLED_Init
-    mymain.o(i.mymain) refers to oled.o(i.OLED_ShowStr) for OLED_ShowStr
+    mymain.o(i.mymain) refers to oled.o(i.OLED_Cache_to_hardware) for OLED_Cache_to_hardware
+    mymain.o(i.mymain) refers to stm32f1xx_hal.o(i.HAL_GetTick) for HAL_GetTick
+    mymain.o(i.mymain) refers to stm32f1xx_hal_gpio.o(i.HAL_GPIO_TogglePin) for HAL_GPIO_TogglePin
+    oled.o(i.OLED_Cache_to_hardware) refers to oled.o(i.OLED_Set_Pos) for OLED_Set_Pos
+    oled.o(i.OLED_Cache_to_hardware) refers to oled.o(i.OLED_WrDat) for OLED_WrDat
+    oled.o(i.OLED_Cache_to_hardware) refers to oled.o(.bss) for .bss
     oled.o(i.OLED_Init) refers to oled.o(i.OLED_WrCmd) for OLED_WrCmd
+    oled.o(i.OLED_Init) refers to oled.o(i.OLED_Init_Display_Buffer) for OLED_Init_Display_Buffer
     oled.o(i.OLED_Init_Display_Buffer) refers to oled.o(i.OLED_Set_Pos) for OLED_Set_Pos
     oled.o(i.OLED_Init_Display_Buffer) refers to oled.o(i.OLED_WrDat) for OLED_WrDat
     oled.o(i.OLED_Set_Pos) refers to oled.o(i.OLED_WrCmd) for OLED_WrCmd
@@ -553,7 +559,6 @@ Removing Unused input sections from the image.
     Removing stm32f1xx_hal_gpio.o(i.HAL_GPIO_EXTI_IRQHandler), (24 bytes).
     Removing stm32f1xx_hal_gpio.o(i.HAL_GPIO_LockPin), (34 bytes).
     Removing stm32f1xx_hal_gpio.o(i.HAL_GPIO_ReadPin), (10 bytes).
-    Removing stm32f1xx_hal_gpio.o(i.HAL_GPIO_TogglePin), (16 bytes).
     Removing stm32f1xx_hal_dma.o(.rev16_text), (4 bytes).
     Removing stm32f1xx_hal_dma.o(.revsh_text), (4 bytes).
     Removing stm32f1xx_hal_dma.o(.rrx_text), (6 bytes).
@@ -671,10 +676,12 @@ Removing Unused input sections from the image.
     Removing oled.o(.rev16_text), (4 bytes).
     Removing oled.o(.revsh_text), (4 bytes).
     Removing oled.o(.rrx_text), (6 bytes).
-    Removing oled.o(i.OLED_Init_Display_Buffer), (40 bytes).
     Removing oled.o(i.OLED_Setting_luminance), (44 bytes).
+    Removing oled.o(i.OLED_ShowChar), (92 bytes).
+    Removing oled.o(i.OLED_ShowStr), (48 bytes).
+    Removing oled.o(.constdata), (1520 bytes).
 
-256 unused section(s) (total 20138 bytes) removed from the image.
+257 unused section(s) (total 21742 bytes) removed from the image.
 
 ==============================================================================
 
@@ -703,52 +710,52 @@ Image Symbol Table
     ../Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.c 0x00000000   Number         0  stm32f1xx_hal_tim.o ABSOLUTE
     ../Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim_ex.c 0x00000000   Number         0  stm32f1xx_hal_tim_ex.o ABSOLUTE
     ../clib/angel/boardlib.s                 0x00000000   Number         0  boardinit1.o ABSOLUTE
-    ../clib/angel/boardlib.s                 0x00000000   Number         0  boardshut.o ABSOLUTE
     ../clib/angel/boardlib.s                 0x00000000   Number         0  boardinit2.o ABSOLUTE
     ../clib/angel/boardlib.s                 0x00000000   Number         0  boardinit3.o ABSOLUTE
-    ../clib/angel/handlers.s                 0x00000000   Number         0  __scatter_copy.o ABSOLUTE
+    ../clib/angel/boardlib.s                 0x00000000   Number         0  boardshut.o ABSOLUTE
     ../clib/angel/handlers.s                 0x00000000   Number         0  __scatter_zi.o ABSOLUTE
-    ../clib/angel/kernel.s                   0x00000000   Number         0  rtexit.o ABSOLUTE
+    ../clib/angel/handlers.s                 0x00000000   Number         0  __scatter_copy.o ABSOLUTE
     ../clib/angel/kernel.s                   0x00000000   Number         0  __rtentry.o ABSOLUTE
-    ../clib/angel/kernel.s                   0x00000000   Number         0  rtexit2.o ABSOLUTE
-    ../clib/angel/kernel.s                   0x00000000   Number         0  __rtentry4.o ABSOLUTE
     ../clib/angel/kernel.s                   0x00000000   Number         0  __rtentry2.o ABSOLUTE
+    ../clib/angel/kernel.s                   0x00000000   Number         0  __rtentry4.o ABSOLUTE
+    ../clib/angel/kernel.s                   0x00000000   Number         0  rtexit.o ABSOLUTE
+    ../clib/angel/kernel.s                   0x00000000   Number         0  rtexit2.o ABSOLUTE
     ../clib/angel/rt.s                       0x00000000   Number         0  rt_raise.o ABSOLUTE
     ../clib/angel/scatter.s                  0x00000000   Number         0  __scatter.o ABSOLUTE
     ../clib/angel/startup.s                  0x00000000   Number         0  __main.o ABSOLUTE
+    ../clib/angel/sys.s                      0x00000000   Number         0  sys_stackheap_outer.o ABSOLUTE
     ../clib/angel/sys.s                      0x00000000   Number         0  libspace.o ABSOLUTE
     ../clib/angel/sys.s                      0x00000000   Number         0  indicate_semi.o ABSOLUTE
     ../clib/angel/sys.s                      0x00000000   Number         0  use_no_semi.o ABSOLUTE
-    ../clib/angel/sys.s                      0x00000000   Number         0  sys_stackheap_outer.o ABSOLUTE
-    ../clib/angel/sysapp.c                   0x00000000   Number         0  sys_exit.o ABSOLUTE
     ../clib/angel/sysapp.c                   0x00000000   Number         0  sys_wrch.o ABSOLUTE
+    ../clib/angel/sysapp.c                   0x00000000   Number         0  sys_exit.o ABSOLUTE
     ../clib/angel/sysapp.c                   0x00000000   Number         0  sys_command.o ABSOLUTE
+    ../clib/armsys.c                         0x00000000   Number         0  argv_veneer.o ABSOLUTE
     ../clib/armsys.c                         0x00000000   Number         0  no_argv.o ABSOLUTE
+    ../clib/armsys.c                         0x00000000   Number         0  argv_veneer.o ABSOLUTE
     ../clib/armsys.c                         0x00000000   Number         0  _get_argv_nomalloc.o ABSOLUTE
-    ../clib/armsys.c                         0x00000000   Number         0  argv_veneer.o ABSOLUTE
-    ../clib/armsys.c                         0x00000000   Number         0  argv_veneer.o ABSOLUTE
     ../clib/heapalloc.c                      0x00000000   Number         0  hrguard.o ABSOLUTE
     ../clib/heapaux.c                        0x00000000   Number         0  heapauxi.o ABSOLUTE
-    ../clib/libinit.s                        0x00000000   Number         0  libinit2.o ABSOLUTE
-    ../clib/libinit.s                        0x00000000   Number         0  libshutdown.o ABSOLUTE
-    ../clib/libinit.s                        0x00000000   Number         0  libshutdown2.o ABSOLUTE
     ../clib/libinit.s                        0x00000000   Number         0  libinit.o ABSOLUTE
+    ../clib/libinit.s                        0x00000000   Number         0  libinit2.o ABSOLUTE
+    ../clib/libinit.s                        0x00000000   Number         0  libshutdown2.o ABSOLUTE
+    ../clib/libinit.s                        0x00000000   Number         0  libshutdown.o ABSOLUTE
     ../clib/longlong.s                       0x00000000   Number         0  llushr.o ABSOLUTE
     ../clib/memcpset.s                       0x00000000   Number         0  rt_memclr_w.o ABSOLUTE
-    ../clib/signal.c                         0x00000000   Number         0  defsig_segv_inner.o ABSOLUTE
-    ../clib/signal.c                         0x00000000   Number         0  defsig_cppl_inner.o ABSOLUTE
-    ../clib/signal.c                         0x00000000   Number         0  defsig_pvfn_inner.o ABSOLUTE
-    ../clib/signal.c                         0x00000000   Number         0  defsig_stak_inner.o ABSOLUTE
-    ../clib/signal.c                         0x00000000   Number         0  defsig_rtred_inner.o ABSOLUTE
-    ../clib/signal.c                         0x00000000   Number         0  defsig_fpe_inner.o ABSOLUTE
-    ../clib/signal.c                         0x00000000   Number         0  defsig_abrt_inner.o ABSOLUTE
-    ../clib/signal.c                         0x00000000   Number         0  defsig_general.o ABSOLUTE
-    ../clib/signal.c                         0x00000000   Number         0  __raise.o ABSOLUTE
-    ../clib/signal.c                         0x00000000   Number         0  defsig_exit.o ABSOLUTE
-    ../clib/signal.c                         0x00000000   Number         0  defsig_rtmem_formal.o ABSOLUTE
-    ../clib/signal.c                         0x00000000   Number         0  defsig_rtmem_outer.o ABSOLUTE
     ../clib/signal.c                         0x00000000   Number         0  defsig_rtmem_inner.o ABSOLUTE
+    ../clib/signal.c                         0x00000000   Number         0  defsig_cppl_inner.o ABSOLUTE
+    ../clib/signal.c                         0x00000000   Number         0  defsig_rtmem_outer.o ABSOLUTE
+    ../clib/signal.c                         0x00000000   Number         0  defsig_rtmem_formal.o ABSOLUTE
     ../clib/signal.c                         0x00000000   Number         0  defsig_other.o ABSOLUTE
+    ../clib/signal.c                         0x00000000   Number         0  defsig_exit.o ABSOLUTE
+    ../clib/signal.c                         0x00000000   Number         0  __raise.o ABSOLUTE
+    ../clib/signal.c                         0x00000000   Number         0  defsig_general.o ABSOLUTE
+    ../clib/signal.c                         0x00000000   Number         0  defsig_fpe_inner.o ABSOLUTE
+    ../clib/signal.c                         0x00000000   Number         0  defsig_segv_inner.o ABSOLUTE
+    ../clib/signal.c                         0x00000000   Number         0  defsig_rtred_inner.o ABSOLUTE
+    ../clib/signal.c                         0x00000000   Number         0  defsig_stak_inner.o ABSOLUTE
+    ../clib/signal.c                         0x00000000   Number         0  defsig_pvfn_inner.o ABSOLUTE
+    ../clib/signal.c                         0x00000000   Number         0  defsig_abrt_inner.o ABSOLUTE
     ../clib/signal.s                         0x00000000   Number         0  defsig.o ABSOLUTE
     ../clib/stdlib.c                         0x00000000   Number         0  exit.o ABSOLUTE
     ../fplib/dfixu.s                         0x00000000   Number         0  dfixu.o ABSOLUTE
@@ -779,6 +786,7 @@ Image Symbol Table
     MYDEIVERS\\hread_interface.c             0x00000000   Number         0  hread_interface.o ABSOLUTE
     MYDEIVERS\\mymain.c                      0x00000000   Number         0  mymain.o ABSOLUTE
     MYDEIVERS\\oled.c                        0x00000000   Number         0  oled.o ABSOLUTE
+    MYDEIVERS\fonts.c                        0x00000000   Number         0  fonts.o ABSOLUTE
     MYDEIVERS\hread_interface.c              0x00000000   Number         0  hread_interface.o ABSOLUTE
     MYDEIVERS\mymain.c                       0x00000000   Number         0  mymain.o ABSOLUTE
     MYDEIVERS\oled.c                         0x00000000   Number         0  oled.o ABSOLUTE
@@ -843,68 +851,69 @@ Image Symbol Table
     i.BusFault_Handler                       0x0800028e   Section        0  stm32f1xx_it.o(i.BusFault_Handler)
     i.DebugMon_Handler                       0x08000290   Section        0  stm32f1xx_it.o(i.DebugMon_Handler)
     i.HAL_GPIO_Init                          0x08000294   Section        0  stm32f1xx_hal_gpio.o(i.HAL_GPIO_Init)
-    i.HAL_GPIO_WritePin                      0x08000474   Section        0  stm32f1xx_hal_gpio.o(i.HAL_GPIO_WritePin)
-    i.HAL_GetTick                            0x08000480   Section        0  stm32f1xx_hal.o(i.HAL_GetTick)
-    i.HAL_I2C_Init                           0x0800048c   Section        0  stm32f1xx_hal_i2c.o(i.HAL_I2C_Init)
-    i.HAL_I2C_Mem_Write                      0x08000614   Section        0  stm32f1xx_hal_i2c.o(i.HAL_I2C_Mem_Write)
-    i.HAL_I2C_MspInit                        0x08000744   Section        0  stm32f1xx_hal_msp.o(i.HAL_I2C_MspInit)
-    i.HAL_IncTick                            0x080007a0   Section        0  stm32f1xx_hal.o(i.HAL_IncTick)
-    i.HAL_Init                               0x080007b0   Section        0  stm32f1xx_hal.o(i.HAL_Init)
-    i.HAL_InitTick                           0x080007d4   Section        0  stm32f1xx_hal.o(i.HAL_InitTick)
-    i.HAL_MspInit                            0x08000814   Section        0  stm32f1xx_hal_msp.o(i.HAL_MspInit)
-    i.HAL_NVIC_SetPriority                   0x08000850   Section        0  stm32f1xx_hal_cortex.o(i.HAL_NVIC_SetPriority)
-    i.HAL_NVIC_SetPriorityGrouping           0x08000890   Section        0  stm32f1xx_hal_cortex.o(i.HAL_NVIC_SetPriorityGrouping)
-    i.HAL_RCC_ClockConfig                    0x080008b4   Section        0  stm32f1xx_hal_rcc.o(i.HAL_RCC_ClockConfig)
-    i.HAL_RCC_GetPCLK1Freq                   0x080009e0   Section        0  stm32f1xx_hal_rcc.o(i.HAL_RCC_GetPCLK1Freq)
-    i.HAL_RCC_GetSysClockFreq                0x08000a00   Section        0  stm32f1xx_hal_rcc.o(i.HAL_RCC_GetSysClockFreq)
-    i.HAL_RCC_OscConfig                      0x08000a6c   Section        0  stm32f1xx_hal_rcc.o(i.HAL_RCC_OscConfig)
-    i.HAL_SYSTICK_Config                     0x08000d8c   Section        0  stm32f1xx_hal_cortex.o(i.HAL_SYSTICK_Config)
-    i.HardFault_Handler                      0x08000db4   Section        0  stm32f1xx_it.o(i.HardFault_Handler)
-    i.I2C_IsAcknowledgeFailed                0x08000db6   Section        0  stm32f1xx_hal_i2c.o(i.I2C_IsAcknowledgeFailed)
-    I2C_IsAcknowledgeFailed                  0x08000db7   Thumb Code    46  stm32f1xx_hal_i2c.o(i.I2C_IsAcknowledgeFailed)
-    i.I2C_RequestMemoryWrite                 0x08000de4   Section        0  stm32f1xx_hal_i2c.o(i.I2C_RequestMemoryWrite)
-    I2C_RequestMemoryWrite                   0x08000de5   Thumb Code   162  stm32f1xx_hal_i2c.o(i.I2C_RequestMemoryWrite)
-    i.I2C_WaitOnBTFFlagUntilTimeout          0x08000e8c   Section        0  stm32f1xx_hal_i2c.o(i.I2C_WaitOnBTFFlagUntilTimeout)
-    I2C_WaitOnBTFFlagUntilTimeout            0x08000e8d   Thumb Code    76  stm32f1xx_hal_i2c.o(i.I2C_WaitOnBTFFlagUntilTimeout)
-    i.I2C_WaitOnFlagUntilTimeout             0x08000ed8   Section        0  stm32f1xx_hal_i2c.o(i.I2C_WaitOnFlagUntilTimeout)
-    I2C_WaitOnFlagUntilTimeout               0x08000ed9   Thumb Code   104  stm32f1xx_hal_i2c.o(i.I2C_WaitOnFlagUntilTimeout)
-    i.I2C_WaitOnMasterAddressFlagUntilTimeout 0x08000f40   Section        0  stm32f1xx_hal_i2c.o(i.I2C_WaitOnMasterAddressFlagUntilTimeout)
-    I2C_WaitOnMasterAddressFlagUntilTimeout  0x08000f41   Thumb Code   150  stm32f1xx_hal_i2c.o(i.I2C_WaitOnMasterAddressFlagUntilTimeout)
-    i.I2C_WaitOnTXEFlagUntilTimeout          0x08000fd6   Section        0  stm32f1xx_hal_i2c.o(i.I2C_WaitOnTXEFlagUntilTimeout)
-    I2C_WaitOnTXEFlagUntilTimeout            0x08000fd7   Thumb Code    76  stm32f1xx_hal_i2c.o(i.I2C_WaitOnTXEFlagUntilTimeout)
-    i.IIC_SAND_DATE                          0x08001024   Section        0  hread_interface.o(i.IIC_SAND_DATE)
-    i.MX_GPIO_Init                           0x08001040   Section        0  main.o(i.MX_GPIO_Init)
-    MX_GPIO_Init                             0x08001041   Thumb Code   150  main.o(i.MX_GPIO_Init)
-    i.MemManage_Handler                      0x080010e0   Section        0  stm32f1xx_it.o(i.MemManage_Handler)
-    i.NMI_Handler                            0x080010e2   Section        0  stm32f1xx_it.o(i.NMI_Handler)
-    i.OLED_Init                              0x080010e4   Section        0  oled.o(i.OLED_Init)
-    i.OLED_Set_Pos                           0x08001168   Section        0  oled.o(i.OLED_Set_Pos)
-    i.OLED_ShowChar                          0x0800118c   Section        0  oled.o(i.OLED_ShowChar)
-    i.OLED_ShowStr                           0x080011e8   Section        0  oled.o(i.OLED_ShowStr)
-    i.OLED_WrCmd                             0x08001218   Section        0  oled.o(i.OLED_WrCmd)
-    i.OLED_WrDat                             0x08001228   Section        0  oled.o(i.OLED_WrDat)
-    i.PendSV_Handler                         0x08001238   Section        0  stm32f1xx_it.o(i.PendSV_Handler)
-    i.SVC_Handler                            0x0800123a   Section        0  stm32f1xx_it.o(i.SVC_Handler)
-    i.SysTick_Handler                        0x0800123c   Section        0  stm32f1xx_it.o(i.SysTick_Handler)
-    i.SystemClock_Config                     0x08001240   Section        0  main.o(i.SystemClock_Config)
-    i.SystemInit                             0x0800129e   Section        0  system_stm32f1xx.o(i.SystemInit)
-    i.UsageFault_Handler                     0x080012a0   Section        0  stm32f1xx_it.o(i.UsageFault_Handler)
-    i.__NVIC_SetPriority                     0x080012a2   Section        0  stm32f1xx_hal_cortex.o(i.__NVIC_SetPriority)
-    __NVIC_SetPriority                       0x080012a3   Thumb Code    32  stm32f1xx_hal_cortex.o(i.__NVIC_SetPriority)
-    i.main                                   0x080012c4   Section        0  main.o(i.main)
-    i.mymain                                 0x0800130c   Section        0  mymain.o(i.mymain)
-    .constdata                               0x08001324   Section       16  system_stm32f1xx.o(.constdata)
-    .constdata                               0x08001334   Section        8  system_stm32f1xx.o(.constdata)
-    .constdata                               0x0800133c   Section     1520  oled.o(.constdata)
+    i.HAL_GPIO_TogglePin                     0x08000474   Section        0  stm32f1xx_hal_gpio.o(i.HAL_GPIO_TogglePin)
+    i.HAL_GPIO_WritePin                      0x08000484   Section        0  stm32f1xx_hal_gpio.o(i.HAL_GPIO_WritePin)
+    i.HAL_GetTick                            0x08000490   Section        0  stm32f1xx_hal.o(i.HAL_GetTick)
+    i.HAL_I2C_Init                           0x0800049c   Section        0  stm32f1xx_hal_i2c.o(i.HAL_I2C_Init)
+    i.HAL_I2C_Mem_Write                      0x08000624   Section        0  stm32f1xx_hal_i2c.o(i.HAL_I2C_Mem_Write)
+    i.HAL_I2C_MspInit                        0x08000754   Section        0  stm32f1xx_hal_msp.o(i.HAL_I2C_MspInit)
+    i.HAL_IncTick                            0x080007b0   Section        0  stm32f1xx_hal.o(i.HAL_IncTick)
+    i.HAL_Init                               0x080007c0   Section        0  stm32f1xx_hal.o(i.HAL_Init)
+    i.HAL_InitTick                           0x080007e4   Section        0  stm32f1xx_hal.o(i.HAL_InitTick)
+    i.HAL_MspInit                            0x08000824   Section        0  stm32f1xx_hal_msp.o(i.HAL_MspInit)
+    i.HAL_NVIC_SetPriority                   0x08000860   Section        0  stm32f1xx_hal_cortex.o(i.HAL_NVIC_SetPriority)
+    i.HAL_NVIC_SetPriorityGrouping           0x080008a0   Section        0  stm32f1xx_hal_cortex.o(i.HAL_NVIC_SetPriorityGrouping)
+    i.HAL_RCC_ClockConfig                    0x080008c4   Section        0  stm32f1xx_hal_rcc.o(i.HAL_RCC_ClockConfig)
+    i.HAL_RCC_GetPCLK1Freq                   0x080009f0   Section        0  stm32f1xx_hal_rcc.o(i.HAL_RCC_GetPCLK1Freq)
+    i.HAL_RCC_GetSysClockFreq                0x08000a10   Section        0  stm32f1xx_hal_rcc.o(i.HAL_RCC_GetSysClockFreq)
+    i.HAL_RCC_OscConfig                      0x08000a7c   Section        0  stm32f1xx_hal_rcc.o(i.HAL_RCC_OscConfig)
+    i.HAL_SYSTICK_Config                     0x08000d9c   Section        0  stm32f1xx_hal_cortex.o(i.HAL_SYSTICK_Config)
+    i.HardFault_Handler                      0x08000dc4   Section        0  stm32f1xx_it.o(i.HardFault_Handler)
+    i.I2C_IsAcknowledgeFailed                0x08000dc6   Section        0  stm32f1xx_hal_i2c.o(i.I2C_IsAcknowledgeFailed)
+    I2C_IsAcknowledgeFailed                  0x08000dc7   Thumb Code    46  stm32f1xx_hal_i2c.o(i.I2C_IsAcknowledgeFailed)
+    i.I2C_RequestMemoryWrite                 0x08000df4   Section        0  stm32f1xx_hal_i2c.o(i.I2C_RequestMemoryWrite)
+    I2C_RequestMemoryWrite                   0x08000df5   Thumb Code   162  stm32f1xx_hal_i2c.o(i.I2C_RequestMemoryWrite)
+    i.I2C_WaitOnBTFFlagUntilTimeout          0x08000e9c   Section        0  stm32f1xx_hal_i2c.o(i.I2C_WaitOnBTFFlagUntilTimeout)
+    I2C_WaitOnBTFFlagUntilTimeout            0x08000e9d   Thumb Code    76  stm32f1xx_hal_i2c.o(i.I2C_WaitOnBTFFlagUntilTimeout)
+    i.I2C_WaitOnFlagUntilTimeout             0x08000ee8   Section        0  stm32f1xx_hal_i2c.o(i.I2C_WaitOnFlagUntilTimeout)
+    I2C_WaitOnFlagUntilTimeout               0x08000ee9   Thumb Code   104  stm32f1xx_hal_i2c.o(i.I2C_WaitOnFlagUntilTimeout)
+    i.I2C_WaitOnMasterAddressFlagUntilTimeout 0x08000f50   Section        0  stm32f1xx_hal_i2c.o(i.I2C_WaitOnMasterAddressFlagUntilTimeout)
+    I2C_WaitOnMasterAddressFlagUntilTimeout  0x08000f51   Thumb Code   150  stm32f1xx_hal_i2c.o(i.I2C_WaitOnMasterAddressFlagUntilTimeout)
+    i.I2C_WaitOnTXEFlagUntilTimeout          0x08000fe6   Section        0  stm32f1xx_hal_i2c.o(i.I2C_WaitOnTXEFlagUntilTimeout)
+    I2C_WaitOnTXEFlagUntilTimeout            0x08000fe7   Thumb Code    76  stm32f1xx_hal_i2c.o(i.I2C_WaitOnTXEFlagUntilTimeout)
+    i.IIC_SAND_DATE                          0x08001034   Section        0  hread_interface.o(i.IIC_SAND_DATE)
+    i.MX_GPIO_Init                           0x08001050   Section        0  main.o(i.MX_GPIO_Init)
+    MX_GPIO_Init                             0x08001051   Thumb Code   150  main.o(i.MX_GPIO_Init)
+    i.MemManage_Handler                      0x080010f0   Section        0  stm32f1xx_it.o(i.MemManage_Handler)
+    i.NMI_Handler                            0x080010f2   Section        0  stm32f1xx_it.o(i.NMI_Handler)
+    i.OLED_Cache_to_hardware                 0x080010f4   Section        0  oled.o(i.OLED_Cache_to_hardware)
+    i.OLED_Init                              0x08001128   Section        0  oled.o(i.OLED_Init)
+    i.OLED_Init_Display_Buffer               0x080011b2   Section        0  oled.o(i.OLED_Init_Display_Buffer)
+    i.OLED_Set_Pos                           0x080011da   Section        0  oled.o(i.OLED_Set_Pos)
+    i.OLED_WrCmd                             0x080011fe   Section        0  oled.o(i.OLED_WrCmd)
+    i.OLED_WrDat                             0x0800120e   Section        0  oled.o(i.OLED_WrDat)
+    i.PendSV_Handler                         0x0800121e   Section        0  stm32f1xx_it.o(i.PendSV_Handler)
+    i.SVC_Handler                            0x08001220   Section        0  stm32f1xx_it.o(i.SVC_Handler)
+    i.SysTick_Handler                        0x08001222   Section        0  stm32f1xx_it.o(i.SysTick_Handler)
+    i.SystemClock_Config                     0x08001226   Section        0  main.o(i.SystemClock_Config)
+    i.SystemInit                             0x08001284   Section        0  system_stm32f1xx.o(i.SystemInit)
+    i.UsageFault_Handler                     0x08001286   Section        0  stm32f1xx_it.o(i.UsageFault_Handler)
+    i.__NVIC_SetPriority                     0x08001288   Section        0  stm32f1xx_hal_cortex.o(i.__NVIC_SetPriority)
+    __NVIC_SetPriority                       0x08001289   Thumb Code    32  stm32f1xx_hal_cortex.o(i.__NVIC_SetPriority)
+    i.main                                   0x080012a8   Section        0  main.o(i.main)
+    i.mymain                                 0x080012f0   Section        0  mymain.o(i.mymain)
+    .constdata                               0x0800131c   Section       16  system_stm32f1xx.o(.constdata)
+    .constdata                               0x0800132c   Section        8  system_stm32f1xx.o(.constdata)
     .data                                    0x20000000   Section       12  stm32f1xx_hal.o(.data)
     .data                                    0x2000000c   Section        4  system_stm32f1xx.o(.data)
     .bss                                     0x20000010   Section       84  main.o(.bss)
-    .bss                                     0x20000064   Section       96  libspace.o(.bss)
-    HEAP                                     0x200000c8   Section      512  startup_stm32f103xb.o(HEAP)
-    Heap_Mem                                 0x200000c8   Data         512  startup_stm32f103xb.o(HEAP)
-    STACK                                    0x200002c8   Section     1024  startup_stm32f103xb.o(STACK)
-    Stack_Mem                                0x200002c8   Data        1024  startup_stm32f103xb.o(STACK)
-    __initial_sp                             0x200006c8   Data           0  startup_stm32f103xb.o(STACK)
+    .bss                                     0x20000064   Section     1024  oled.o(.bss)
+    .bss                                     0x20000464   Section       96  libspace.o(.bss)
+    HEAP                                     0x200004c8   Section      512  startup_stm32f103xb.o(HEAP)
+    Heap_Mem                                 0x200004c8   Data         512  startup_stm32f103xb.o(HEAP)
+    STACK                                    0x200006c8   Section     1024  startup_stm32f103xb.o(STACK)
+    Stack_Mem                                0x200006c8   Data        1024  startup_stm32f103xb.o(STACK)
+    __initial_sp                             0x20000ac8   Data           0  startup_stm32f103xb.o(STACK)
 
     Global Symbols
 
@@ -1057,52 +1066,53 @@ Image Symbol Table
     __semihosting_library_function           0x0800028f   Thumb Code     0  indicate_semi.o(.text)
     DebugMon_Handler                         0x08000291   Thumb Code     2  stm32f1xx_it.o(i.DebugMon_Handler)
     HAL_GPIO_Init                            0x08000295   Thumb Code   446  stm32f1xx_hal_gpio.o(i.HAL_GPIO_Init)
-    HAL_GPIO_WritePin                        0x08000475   Thumb Code    10  stm32f1xx_hal_gpio.o(i.HAL_GPIO_WritePin)
-    HAL_GetTick                              0x08000481   Thumb Code     6  stm32f1xx_hal.o(i.HAL_GetTick)
-    HAL_I2C_Init                             0x0800048d   Thumb Code   376  stm32f1xx_hal_i2c.o(i.HAL_I2C_Init)
-    HAL_I2C_Mem_Write                        0x08000615   Thumb Code   294  stm32f1xx_hal_i2c.o(i.HAL_I2C_Mem_Write)
-    HAL_I2C_MspInit                          0x08000745   Thumb Code    80  stm32f1xx_hal_msp.o(i.HAL_I2C_MspInit)
-    HAL_IncTick                              0x080007a1   Thumb Code    12  stm32f1xx_hal.o(i.HAL_IncTick)
-    HAL_Init                                 0x080007b1   Thumb Code    32  stm32f1xx_hal.o(i.HAL_Init)
-    HAL_InitTick                             0x080007d5   Thumb Code    54  stm32f1xx_hal.o(i.HAL_InitTick)
-    HAL_MspInit                              0x08000815   Thumb Code    52  stm32f1xx_hal_msp.o(i.HAL_MspInit)
-    HAL_NVIC_SetPriority                     0x08000851   Thumb Code    60  stm32f1xx_hal_cortex.o(i.HAL_NVIC_SetPriority)
-    HAL_NVIC_SetPriorityGrouping             0x08000891   Thumb Code    26  stm32f1xx_hal_cortex.o(i.HAL_NVIC_SetPriorityGrouping)
-    HAL_RCC_ClockConfig                      0x080008b5   Thumb Code   280  stm32f1xx_hal_rcc.o(i.HAL_RCC_ClockConfig)
-    HAL_RCC_GetPCLK1Freq                     0x080009e1   Thumb Code    20  stm32f1xx_hal_rcc.o(i.HAL_RCC_GetPCLK1Freq)
-    HAL_RCC_GetSysClockFreq                  0x08000a01   Thumb Code    74  stm32f1xx_hal_rcc.o(i.HAL_RCC_GetSysClockFreq)
-    HAL_RCC_OscConfig                        0x08000a6d   Thumb Code   778  stm32f1xx_hal_rcc.o(i.HAL_RCC_OscConfig)
-    HAL_SYSTICK_Config                       0x08000d8d   Thumb Code    40  stm32f1xx_hal_cortex.o(i.HAL_SYSTICK_Config)
-    HardFault_Handler                        0x08000db5   Thumb Code     2  stm32f1xx_it.o(i.HardFault_Handler)
-    IIC_SAND_DATE                            0x08001025   Thumb Code    22  hread_interface.o(i.IIC_SAND_DATE)
-    MemManage_Handler                        0x080010e1   Thumb Code     2  stm32f1xx_it.o(i.MemManage_Handler)
-    NMI_Handler                              0x080010e3   Thumb Code     2  stm32f1xx_it.o(i.NMI_Handler)
-    OLED_Init                                0x080010e5   Thumb Code   132  oled.o(i.OLED_Init)
-    OLED_Set_Pos                             0x08001169   Thumb Code    36  oled.o(i.OLED_Set_Pos)
-    OLED_ShowChar                            0x0800118d   Thumb Code    88  oled.o(i.OLED_ShowChar)
-    OLED_ShowStr                             0x080011e9   Thumb Code    48  oled.o(i.OLED_ShowStr)
-    OLED_WrCmd                               0x08001219   Thumb Code    16  oled.o(i.OLED_WrCmd)
-    OLED_WrDat                               0x08001229   Thumb Code    16  oled.o(i.OLED_WrDat)
-    PendSV_Handler                           0x08001239   Thumb Code     2  stm32f1xx_it.o(i.PendSV_Handler)
-    SVC_Handler                              0x0800123b   Thumb Code     2  stm32f1xx_it.o(i.SVC_Handler)
-    SysTick_Handler                          0x0800123d   Thumb Code     4  stm32f1xx_it.o(i.SysTick_Handler)
-    SystemClock_Config                       0x08001241   Thumb Code    94  main.o(i.SystemClock_Config)
-    SystemInit                               0x0800129f   Thumb Code     2  system_stm32f1xx.o(i.SystemInit)
-    UsageFault_Handler                       0x080012a1   Thumb Code     2  stm32f1xx_it.o(i.UsageFault_Handler)
-    main                                     0x080012c5   Thumb Code    58  main.o(i.main)
-    mymain                                   0x0800130d   Thumb Code    16  mymain.o(i.mymain)
-    AHBPrescTable                            0x08001324   Data          16  system_stm32f1xx.o(.constdata)
-    APBPrescTable                            0x08001334   Data           8  system_stm32f1xx.o(.constdata)
-    asc2_1608                                0x0800133c   Data        1520  oled.o(.constdata)
-    Region$$Table$$Base                      0x0800192c   Number         0  anon$$obj.o(Region$$Table)
-    Region$$Table$$Limit                     0x0800194c   Number         0  anon$$obj.o(Region$$Table)
+    HAL_GPIO_TogglePin                       0x08000475   Thumb Code    16  stm32f1xx_hal_gpio.o(i.HAL_GPIO_TogglePin)
+    HAL_GPIO_WritePin                        0x08000485   Thumb Code    10  stm32f1xx_hal_gpio.o(i.HAL_GPIO_WritePin)
+    HAL_GetTick                              0x08000491   Thumb Code     6  stm32f1xx_hal.o(i.HAL_GetTick)
+    HAL_I2C_Init                             0x0800049d   Thumb Code   376  stm32f1xx_hal_i2c.o(i.HAL_I2C_Init)
+    HAL_I2C_Mem_Write                        0x08000625   Thumb Code   294  stm32f1xx_hal_i2c.o(i.HAL_I2C_Mem_Write)
+    HAL_I2C_MspInit                          0x08000755   Thumb Code    80  stm32f1xx_hal_msp.o(i.HAL_I2C_MspInit)
+    HAL_IncTick                              0x080007b1   Thumb Code    12  stm32f1xx_hal.o(i.HAL_IncTick)
+    HAL_Init                                 0x080007c1   Thumb Code    32  stm32f1xx_hal.o(i.HAL_Init)
+    HAL_InitTick                             0x080007e5   Thumb Code    54  stm32f1xx_hal.o(i.HAL_InitTick)
+    HAL_MspInit                              0x08000825   Thumb Code    52  stm32f1xx_hal_msp.o(i.HAL_MspInit)
+    HAL_NVIC_SetPriority                     0x08000861   Thumb Code    60  stm32f1xx_hal_cortex.o(i.HAL_NVIC_SetPriority)
+    HAL_NVIC_SetPriorityGrouping             0x080008a1   Thumb Code    26  stm32f1xx_hal_cortex.o(i.HAL_NVIC_SetPriorityGrouping)
+    HAL_RCC_ClockConfig                      0x080008c5   Thumb Code   280  stm32f1xx_hal_rcc.o(i.HAL_RCC_ClockConfig)
+    HAL_RCC_GetPCLK1Freq                     0x080009f1   Thumb Code    20  stm32f1xx_hal_rcc.o(i.HAL_RCC_GetPCLK1Freq)
+    HAL_RCC_GetSysClockFreq                  0x08000a11   Thumb Code    74  stm32f1xx_hal_rcc.o(i.HAL_RCC_GetSysClockFreq)
+    HAL_RCC_OscConfig                        0x08000a7d   Thumb Code   778  stm32f1xx_hal_rcc.o(i.HAL_RCC_OscConfig)
+    HAL_SYSTICK_Config                       0x08000d9d   Thumb Code    40  stm32f1xx_hal_cortex.o(i.HAL_SYSTICK_Config)
+    HardFault_Handler                        0x08000dc5   Thumb Code     2  stm32f1xx_it.o(i.HardFault_Handler)
+    IIC_SAND_DATE                            0x08001035   Thumb Code    22  hread_interface.o(i.IIC_SAND_DATE)
+    MemManage_Handler                        0x080010f1   Thumb Code     2  stm32f1xx_it.o(i.MemManage_Handler)
+    NMI_Handler                              0x080010f3   Thumb Code     2  stm32f1xx_it.o(i.NMI_Handler)
+    OLED_Cache_to_hardware                   0x080010f5   Thumb Code    48  oled.o(i.OLED_Cache_to_hardware)
+    OLED_Init                                0x08001129   Thumb Code   138  oled.o(i.OLED_Init)
+    OLED_Init_Display_Buffer                 0x080011b3   Thumb Code    40  oled.o(i.OLED_Init_Display_Buffer)
+    OLED_Set_Pos                             0x080011db   Thumb Code    36  oled.o(i.OLED_Set_Pos)
+    OLED_WrCmd                               0x080011ff   Thumb Code    16  oled.o(i.OLED_WrCmd)
+    OLED_WrDat                               0x0800120f   Thumb Code    16  oled.o(i.OLED_WrDat)
+    PendSV_Handler                           0x0800121f   Thumb Code     2  stm32f1xx_it.o(i.PendSV_Handler)
+    SVC_Handler                              0x08001221   Thumb Code     2  stm32f1xx_it.o(i.SVC_Handler)
+    SysTick_Handler                          0x08001223   Thumb Code     4  stm32f1xx_it.o(i.SysTick_Handler)
+    SystemClock_Config                       0x08001227   Thumb Code    94  main.o(i.SystemClock_Config)
+    SystemInit                               0x08001285   Thumb Code     2  system_stm32f1xx.o(i.SystemInit)
+    UsageFault_Handler                       0x08001287   Thumb Code     2  stm32f1xx_it.o(i.UsageFault_Handler)
+    main                                     0x080012a9   Thumb Code    58  main.o(i.main)
+    mymain                                   0x080012f1   Thumb Code    38  mymain.o(i.mymain)
+    AHBPrescTable                            0x0800131c   Data          16  system_stm32f1xx.o(.constdata)
+    APBPrescTable                            0x0800132c   Data           8  system_stm32f1xx.o(.constdata)
+    Region$$Table$$Base                      0x08001334   Number         0  anon$$obj.o(Region$$Table)
+    Region$$Table$$Limit                     0x08001354   Number         0  anon$$obj.o(Region$$Table)
     uwTickFreq                               0x20000000   Data           1  stm32f1xx_hal.o(.data)
     uwTickPrio                               0x20000004   Data           4  stm32f1xx_hal.o(.data)
     uwTick                                   0x20000008   Data           4  stm32f1xx_hal.o(.data)
     SystemCoreClock                          0x2000000c   Data           4  system_stm32f1xx.o(.data)
     hi2c1                                    0x20000010   Data          84  main.o(.bss)
-    __libspace_start                         0x20000064   Data          96  libspace.o(.bss)
-    __temporary_stack_top$libspace           0x200000c4   Data           0  libspace.o(.bss)
+    OLED_buff                                0x20000064   Data        1024  oled.o(.bss)
+    __libspace_start                         0x20000464   Data          96  libspace.o(.bss)
+    __temporary_stack_top$libspace           0x200004c4   Data           0  libspace.o(.bss)
 
 
 
@@ -1112,136 +1122,136 @@ Memory Map of the image
 
   Image Entry point : 0x080000ed
 
-  Load Region LR_IROM1 (Base: 0x08000000, Size: 0x0000195c, Max: 0x00010000, ABSOLUTE)
+  Load Region LR_IROM1 (Base: 0x08000000, Size: 0x00001364, Max: 0x00010000, ABSOLUTE)
 
-    Execution Region ER_IROM1 (Exec base: 0x08000000, Load base: 0x08000000, Size: 0x0000194c, Max: 0x00010000, ABSOLUTE)
+    Execution Region ER_IROM1 (Exec base: 0x08000000, Load base: 0x08000000, Size: 0x00001354, Max: 0x00010000, ABSOLUTE)
 
     Exec Addr    Load Addr    Size         Type   Attr      Idx    E Section Name        Object
 
     0x08000000   0x08000000   0x000000ec   Data   RO            3    RESET               startup_stm32f103xb.o
-    0x080000ec   0x080000ec   0x00000008   Code   RO         1912  * !!!main             c_w.l(__main.o)
-    0x080000f4   0x080000f4   0x00000034   Code   RO         2088    !!!scatter          c_w.l(__scatter.o)
-    0x08000128   0x08000128   0x0000001a   Code   RO         2090    !!handler_copy      c_w.l(__scatter_copy.o)
+    0x080000ec   0x080000ec   0x00000008   Code   RO         1921  * !!!main             c_w.l(__main.o)
+    0x080000f4   0x080000f4   0x00000034   Code   RO         2097    !!!scatter          c_w.l(__scatter.o)
+    0x08000128   0x08000128   0x0000001a   Code   RO         2099    !!handler_copy      c_w.l(__scatter_copy.o)
     0x08000142   0x08000142   0x00000002   PAD
-    0x08000144   0x08000144   0x0000001c   Code   RO         2092    !!handler_zi        c_w.l(__scatter_zi.o)
-    0x08000160   0x08000160   0x00000002   Code   RO         1956    .ARM.Collect$$libinit$$00000000  c_w.l(libinit.o)
-    0x08000162   0x08000162   0x00000000   Code   RO         1963    .ARM.Collect$$libinit$$00000002  c_w.l(libinit2.o)
-    0x08000162   0x08000162   0x00000000   Code   RO         1965    .ARM.Collect$$libinit$$00000004  c_w.l(libinit2.o)
-    0x08000162   0x08000162   0x00000000   Code   RO         1968    .ARM.Collect$$libinit$$0000000A  c_w.l(libinit2.o)
-    0x08000162   0x08000162   0x00000000   Code   RO         1970    .ARM.Collect$$libinit$$0000000C  c_w.l(libinit2.o)
-    0x08000162   0x08000162   0x00000000   Code   RO         1972    .ARM.Collect$$libinit$$0000000E  c_w.l(libinit2.o)
-    0x08000162   0x08000162   0x00000000   Code   RO         1975    .ARM.Collect$$libinit$$00000011  c_w.l(libinit2.o)
-    0x08000162   0x08000162   0x00000000   Code   RO         1977    .ARM.Collect$$libinit$$00000013  c_w.l(libinit2.o)
-    0x08000162   0x08000162   0x00000000   Code   RO         1979    .ARM.Collect$$libinit$$00000015  c_w.l(libinit2.o)
-    0x08000162   0x08000162   0x00000000   Code   RO         1981    .ARM.Collect$$libinit$$00000017  c_w.l(libinit2.o)
-    0x08000162   0x08000162   0x00000000   Code   RO         1983    .ARM.Collect$$libinit$$00000019  c_w.l(libinit2.o)
-    0x08000162   0x08000162   0x00000000   Code   RO         1985    .ARM.Collect$$libinit$$0000001B  c_w.l(libinit2.o)
-    0x08000162   0x08000162   0x00000000   Code   RO         1987    .ARM.Collect$$libinit$$0000001D  c_w.l(libinit2.o)
-    0x08000162   0x08000162   0x00000000   Code   RO         1989    .ARM.Collect$$libinit$$0000001F  c_w.l(libinit2.o)
-    0x08000162   0x08000162   0x00000000   Code   RO         1991    .ARM.Collect$$libinit$$00000021  c_w.l(libinit2.o)
-    0x08000162   0x08000162   0x00000000   Code   RO         1993    .ARM.Collect$$libinit$$00000023  c_w.l(libinit2.o)
-    0x08000162   0x08000162   0x00000000   Code   RO         1995    .ARM.Collect$$libinit$$00000025  c_w.l(libinit2.o)
-    0x08000162   0x08000162   0x00000000   Code   RO         1999    .ARM.Collect$$libinit$$0000002C  c_w.l(libinit2.o)
-    0x08000162   0x08000162   0x00000000   Code   RO         2001    .ARM.Collect$$libinit$$0000002E  c_w.l(libinit2.o)
-    0x08000162   0x08000162   0x00000000   Code   RO         2003    .ARM.Collect$$libinit$$00000030  c_w.l(libinit2.o)
-    0x08000162   0x08000162   0x00000000   Code   RO         2005    .ARM.Collect$$libinit$$00000032  c_w.l(libinit2.o)
-    0x08000162   0x08000162   0x00000002   Code   RO         2006    .ARM.Collect$$libinit$$00000033  c_w.l(libinit2.o)
-    0x08000164   0x08000164   0x00000002   Code   RO         2026    .ARM.Collect$$libshutdown$$00000000  c_w.l(libshutdown.o)
-    0x08000166   0x08000166   0x00000000   Code   RO         2039    .ARM.Collect$$libshutdown$$00000002  c_w.l(libshutdown2.o)
-    0x08000166   0x08000166   0x00000000   Code   RO         2041    .ARM.Collect$$libshutdown$$00000004  c_w.l(libshutdown2.o)
-    0x08000166   0x08000166   0x00000000   Code   RO         2043    .ARM.Collect$$libshutdown$$00000006  c_w.l(libshutdown2.o)
-    0x08000166   0x08000166   0x00000000   Code   RO         2046    .ARM.Collect$$libshutdown$$00000009  c_w.l(libshutdown2.o)
-    0x08000166   0x08000166   0x00000000   Code   RO         2049    .ARM.Collect$$libshutdown$$0000000C  c_w.l(libshutdown2.o)
-    0x08000166   0x08000166   0x00000000   Code   RO         2051    .ARM.Collect$$libshutdown$$0000000E  c_w.l(libshutdown2.o)
-    0x08000166   0x08000166   0x00000000   Code   RO         2054    .ARM.Collect$$libshutdown$$00000011  c_w.l(libshutdown2.o)
-    0x08000166   0x08000166   0x00000002   Code   RO         2055    .ARM.Collect$$libshutdown$$00000012  c_w.l(libshutdown2.o)
-    0x08000168   0x08000168   0x00000000   Code   RO         1926    .ARM.Collect$$rtentry$$00000000  c_w.l(__rtentry.o)
-    0x08000168   0x08000168   0x00000000   Code   RO         1933    .ARM.Collect$$rtentry$$00000002  c_w.l(__rtentry2.o)
-    0x08000168   0x08000168   0x00000006   Code   RO         1945    .ARM.Collect$$rtentry$$00000004  c_w.l(__rtentry4.o)
-    0x0800016e   0x0800016e   0x00000000   Code   RO         1935    .ARM.Collect$$rtentry$$00000009  c_w.l(__rtentry2.o)
-    0x0800016e   0x0800016e   0x00000004   Code   RO         1936    .ARM.Collect$$rtentry$$0000000A  c_w.l(__rtentry2.o)
-    0x08000172   0x08000172   0x00000000   Code   RO         1938    .ARM.Collect$$rtentry$$0000000C  c_w.l(__rtentry2.o)
-    0x08000172   0x08000172   0x00000008   Code   RO         1939    .ARM.Collect$$rtentry$$0000000D  c_w.l(__rtentry2.o)
-    0x0800017a   0x0800017a   0x00000002   Code   RO         1960    .ARM.Collect$$rtexit$$00000000  c_w.l(rtexit.o)
-    0x0800017c   0x0800017c   0x00000000   Code   RO         2008    .ARM.Collect$$rtexit$$00000002  c_w.l(rtexit2.o)
-    0x0800017c   0x0800017c   0x00000004   Code   RO         2009    .ARM.Collect$$rtexit$$00000003  c_w.l(rtexit2.o)
-    0x08000180   0x08000180   0x00000006   Code   RO         2010    .ARM.Collect$$rtexit$$00000004  c_w.l(rtexit2.o)
+    0x08000144   0x08000144   0x0000001c   Code   RO         2101    !!handler_zi        c_w.l(__scatter_zi.o)
+    0x08000160   0x08000160   0x00000002   Code   RO         1965    .ARM.Collect$$libinit$$00000000  c_w.l(libinit.o)
+    0x08000162   0x08000162   0x00000000   Code   RO         1972    .ARM.Collect$$libinit$$00000002  c_w.l(libinit2.o)
+    0x08000162   0x08000162   0x00000000   Code   RO         1974    .ARM.Collect$$libinit$$00000004  c_w.l(libinit2.o)
+    0x08000162   0x08000162   0x00000000   Code   RO         1977    .ARM.Collect$$libinit$$0000000A  c_w.l(libinit2.o)
+    0x08000162   0x08000162   0x00000000   Code   RO         1979    .ARM.Collect$$libinit$$0000000C  c_w.l(libinit2.o)
+    0x08000162   0x08000162   0x00000000   Code   RO         1981    .ARM.Collect$$libinit$$0000000E  c_w.l(libinit2.o)
+    0x08000162   0x08000162   0x00000000   Code   RO         1984    .ARM.Collect$$libinit$$00000011  c_w.l(libinit2.o)
+    0x08000162   0x08000162   0x00000000   Code   RO         1986    .ARM.Collect$$libinit$$00000013  c_w.l(libinit2.o)
+    0x08000162   0x08000162   0x00000000   Code   RO         1988    .ARM.Collect$$libinit$$00000015  c_w.l(libinit2.o)
+    0x08000162   0x08000162   0x00000000   Code   RO         1990    .ARM.Collect$$libinit$$00000017  c_w.l(libinit2.o)
+    0x08000162   0x08000162   0x00000000   Code   RO         1992    .ARM.Collect$$libinit$$00000019  c_w.l(libinit2.o)
+    0x08000162   0x08000162   0x00000000   Code   RO         1994    .ARM.Collect$$libinit$$0000001B  c_w.l(libinit2.o)
+    0x08000162   0x08000162   0x00000000   Code   RO         1996    .ARM.Collect$$libinit$$0000001D  c_w.l(libinit2.o)
+    0x08000162   0x08000162   0x00000000   Code   RO         1998    .ARM.Collect$$libinit$$0000001F  c_w.l(libinit2.o)
+    0x08000162   0x08000162   0x00000000   Code   RO         2000    .ARM.Collect$$libinit$$00000021  c_w.l(libinit2.o)
+    0x08000162   0x08000162   0x00000000   Code   RO         2002    .ARM.Collect$$libinit$$00000023  c_w.l(libinit2.o)
+    0x08000162   0x08000162   0x00000000   Code   RO         2004    .ARM.Collect$$libinit$$00000025  c_w.l(libinit2.o)
+    0x08000162   0x08000162   0x00000000   Code   RO         2008    .ARM.Collect$$libinit$$0000002C  c_w.l(libinit2.o)
+    0x08000162   0x08000162   0x00000000   Code   RO         2010    .ARM.Collect$$libinit$$0000002E  c_w.l(libinit2.o)
+    0x08000162   0x08000162   0x00000000   Code   RO         2012    .ARM.Collect$$libinit$$00000030  c_w.l(libinit2.o)
+    0x08000162   0x08000162   0x00000000   Code   RO         2014    .ARM.Collect$$libinit$$00000032  c_w.l(libinit2.o)
+    0x08000162   0x08000162   0x00000002   Code   RO         2015    .ARM.Collect$$libinit$$00000033  c_w.l(libinit2.o)
+    0x08000164   0x08000164   0x00000002   Code   RO         2035    .ARM.Collect$$libshutdown$$00000000  c_w.l(libshutdown.o)
+    0x08000166   0x08000166   0x00000000   Code   RO         2048    .ARM.Collect$$libshutdown$$00000002  c_w.l(libshutdown2.o)
+    0x08000166   0x08000166   0x00000000   Code   RO         2050    .ARM.Collect$$libshutdown$$00000004  c_w.l(libshutdown2.o)
+    0x08000166   0x08000166   0x00000000   Code   RO         2052    .ARM.Collect$$libshutdown$$00000006  c_w.l(libshutdown2.o)
+    0x08000166   0x08000166   0x00000000   Code   RO         2055    .ARM.Collect$$libshutdown$$00000009  c_w.l(libshutdown2.o)
+    0x08000166   0x08000166   0x00000000   Code   RO         2058    .ARM.Collect$$libshutdown$$0000000C  c_w.l(libshutdown2.o)
+    0x08000166   0x08000166   0x00000000   Code   RO         2060    .ARM.Collect$$libshutdown$$0000000E  c_w.l(libshutdown2.o)
+    0x08000166   0x08000166   0x00000000   Code   RO         2063    .ARM.Collect$$libshutdown$$00000011  c_w.l(libshutdown2.o)
+    0x08000166   0x08000166   0x00000002   Code   RO         2064    .ARM.Collect$$libshutdown$$00000012  c_w.l(libshutdown2.o)
+    0x08000168   0x08000168   0x00000000   Code   RO         1935    .ARM.Collect$$rtentry$$00000000  c_w.l(__rtentry.o)
+    0x08000168   0x08000168   0x00000000   Code   RO         1942    .ARM.Collect$$rtentry$$00000002  c_w.l(__rtentry2.o)
+    0x08000168   0x08000168   0x00000006   Code   RO         1954    .ARM.Collect$$rtentry$$00000004  c_w.l(__rtentry4.o)
+    0x0800016e   0x0800016e   0x00000000   Code   RO         1944    .ARM.Collect$$rtentry$$00000009  c_w.l(__rtentry2.o)
+    0x0800016e   0x0800016e   0x00000004   Code   RO         1945    .ARM.Collect$$rtentry$$0000000A  c_w.l(__rtentry2.o)
+    0x08000172   0x08000172   0x00000000   Code   RO         1947    .ARM.Collect$$rtentry$$0000000C  c_w.l(__rtentry2.o)
+    0x08000172   0x08000172   0x00000008   Code   RO         1948    .ARM.Collect$$rtentry$$0000000D  c_w.l(__rtentry2.o)
+    0x0800017a   0x0800017a   0x00000002   Code   RO         1969    .ARM.Collect$$rtexit$$00000000  c_w.l(rtexit.o)
+    0x0800017c   0x0800017c   0x00000000   Code   RO         2017    .ARM.Collect$$rtexit$$00000002  c_w.l(rtexit2.o)
+    0x0800017c   0x0800017c   0x00000004   Code   RO         2018    .ARM.Collect$$rtexit$$00000003  c_w.l(rtexit2.o)
+    0x08000180   0x08000180   0x00000006   Code   RO         2019    .ARM.Collect$$rtexit$$00000004  c_w.l(rtexit2.o)
     0x08000186   0x08000186   0x00000002   PAD
     0x08000188   0x08000188   0x00000040   Code   RO            4    .text               startup_stm32f103xb.o
-    0x080001c8   0x080001c8   0x0000004e   Code   RO         1908    .text               c_w.l(rt_memclr_w.o)
-    0x08000216   0x08000216   0x00000006   Code   RO         1910    .text               c_w.l(heapauxi.o)
-    0x0800021c   0x0800021c   0x0000004a   Code   RO         1947    .text               c_w.l(sys_stackheap_outer.o)
-    0x08000266   0x08000266   0x00000012   Code   RO         1949    .text               c_w.l(exit.o)
-    0x08000278   0x08000278   0x00000008   Code   RO         1957    .text               c_w.l(libspace.o)
-    0x08000280   0x08000280   0x0000000c   Code   RO         2018    .text               c_w.l(sys_exit.o)
-    0x0800028c   0x0800028c   0x00000002   Code   RO         2029    .text               c_w.l(use_no_semi.o)
-    0x0800028e   0x0800028e   0x00000000   Code   RO         2031    .text               c_w.l(indicate_semi.o)
+    0x080001c8   0x080001c8   0x0000004e   Code   RO         1917    .text               c_w.l(rt_memclr_w.o)
+    0x08000216   0x08000216   0x00000006   Code   RO         1919    .text               c_w.l(heapauxi.o)
+    0x0800021c   0x0800021c   0x0000004a   Code   RO         1956    .text               c_w.l(sys_stackheap_outer.o)
+    0x08000266   0x08000266   0x00000012   Code   RO         1958    .text               c_w.l(exit.o)
+    0x08000278   0x08000278   0x00000008   Code   RO         1966    .text               c_w.l(libspace.o)
+    0x08000280   0x08000280   0x0000000c   Code   RO         2027    .text               c_w.l(sys_exit.o)
+    0x0800028c   0x0800028c   0x00000002   Code   RO         2038    .text               c_w.l(use_no_semi.o)
+    0x0800028e   0x0800028e   0x00000000   Code   RO         2040    .text               c_w.l(indicate_semi.o)
     0x0800028e   0x0800028e   0x00000002   Code   RO          148    i.BusFault_Handler  stm32f1xx_it.o
     0x08000290   0x08000290   0x00000002   Code   RO          149    i.DebugMon_Handler  stm32f1xx_it.o
     0x08000292   0x08000292   0x00000002   PAD
     0x08000294   0x08000294   0x000001e0   Code   RO         1042    i.HAL_GPIO_Init     stm32f1xx_hal_gpio.o
-    0x08000474   0x08000474   0x0000000a   Code   RO         1046    i.HAL_GPIO_WritePin  stm32f1xx_hal_gpio.o
-    0x0800047e   0x0800047e   0x00000002   PAD
-    0x08000480   0x08000480   0x0000000c   Code   RO          738    i.HAL_GetTick       stm32f1xx_hal.o
-    0x0800048c   0x0800048c   0x00000188   Code   RO          306    i.HAL_I2C_Init      stm32f1xx_hal_i2c.o
-    0x08000614   0x08000614   0x00000130   Code   RO          327    i.HAL_I2C_Mem_Write  stm32f1xx_hal_i2c.o
-    0x08000744   0x08000744   0x0000005c   Code   RO          224    i.HAL_I2C_MspInit   stm32f1xx_hal_msp.o
-    0x080007a0   0x080007a0   0x00000010   Code   RO          744    i.HAL_IncTick       stm32f1xx_hal.o
-    0x080007b0   0x080007b0   0x00000024   Code   RO          745    i.HAL_Init          stm32f1xx_hal.o
-    0x080007d4   0x080007d4   0x00000040   Code   RO          746    i.HAL_InitTick      stm32f1xx_hal.o
-    0x08000814   0x08000814   0x0000003c   Code   RO          225    i.HAL_MspInit       stm32f1xx_hal_msp.o
-    0x08000850   0x08000850   0x00000040   Code   RO         1208    i.HAL_NVIC_SetPriority  stm32f1xx_hal_cortex.o
-    0x08000890   0x08000890   0x00000024   Code   RO         1209    i.HAL_NVIC_SetPriorityGrouping  stm32f1xx_hal_cortex.o
-    0x080008b4   0x080008b4   0x0000012c   Code   RO          902    i.HAL_RCC_ClockConfig  stm32f1xx_hal_rcc.o
-    0x080009e0   0x080009e0   0x00000020   Code   RO          909    i.HAL_RCC_GetPCLK1Freq  stm32f1xx_hal_rcc.o
-    0x08000a00   0x08000a00   0x0000006c   Code   RO          911    i.HAL_RCC_GetSysClockFreq  stm32f1xx_hal_rcc.o
-    0x08000a6c   0x08000a6c   0x00000320   Code   RO          914    i.HAL_RCC_OscConfig  stm32f1xx_hal_rcc.o
-    0x08000d8c   0x08000d8c   0x00000028   Code   RO         1213    i.HAL_SYSTICK_Config  stm32f1xx_hal_cortex.o
-    0x08000db4   0x08000db4   0x00000002   Code   RO          150    i.HardFault_Handler  stm32f1xx_it.o
-    0x08000db6   0x08000db6   0x0000002e   Code   RO          348    i.I2C_IsAcknowledgeFailed  stm32f1xx_hal_i2c.o
-    0x08000de4   0x08000de4   0x000000a8   Code   RO          359    i.I2C_RequestMemoryWrite  stm32f1xx_hal_i2c.o
-    0x08000e8c   0x08000e8c   0x0000004c   Code   RO          363    i.I2C_WaitOnBTFFlagUntilTimeout  stm32f1xx_hal_i2c.o
-    0x08000ed8   0x08000ed8   0x00000068   Code   RO          364    i.I2C_WaitOnFlagUntilTimeout  stm32f1xx_hal_i2c.o
-    0x08000f40   0x08000f40   0x00000096   Code   RO          365    i.I2C_WaitOnMasterAddressFlagUntilTimeout  stm32f1xx_hal_i2c.o
-    0x08000fd6   0x08000fd6   0x0000004c   Code   RO          367    i.I2C_WaitOnTXEFlagUntilTimeout  stm32f1xx_hal_i2c.o
-    0x08001022   0x08001022   0x00000002   PAD
-    0x08001024   0x08001024   0x0000001c   Code   RO         1777    i.IIC_SAND_DATE     hread_interface.o
-    0x08001040   0x08001040   0x000000a0   Code   RO           14    i.MX_GPIO_Init      main.o
-    0x080010e0   0x080010e0   0x00000002   Code   RO          151    i.MemManage_Handler  stm32f1xx_it.o
-    0x080010e2   0x080010e2   0x00000002   Code   RO          152    i.NMI_Handler       stm32f1xx_it.o
-    0x080010e4   0x080010e4   0x00000084   Code   RO         1840    i.OLED_Init         oled.o
-    0x08001168   0x08001168   0x00000024   Code   RO         1842    i.OLED_Set_Pos      oled.o
-    0x0800118c   0x0800118c   0x0000005c   Code   RO         1844    i.OLED_ShowChar     oled.o
-    0x080011e8   0x080011e8   0x00000030   Code   RO         1845    i.OLED_ShowStr      oled.o
-    0x08001218   0x08001218   0x00000010   Code   RO         1846    i.OLED_WrCmd        oled.o
-    0x08001228   0x08001228   0x00000010   Code   RO         1847    i.OLED_WrDat        oled.o
-    0x08001238   0x08001238   0x00000002   Code   RO          153    i.PendSV_Handler    stm32f1xx_it.o
-    0x0800123a   0x0800123a   0x00000002   Code   RO          154    i.SVC_Handler       stm32f1xx_it.o
-    0x0800123c   0x0800123c   0x00000004   Code   RO          155    i.SysTick_Handler   stm32f1xx_it.o
-    0x08001240   0x08001240   0x0000005e   Code   RO           15    i.SystemClock_Config  main.o
-    0x0800129e   0x0800129e   0x00000002   Code   RO         1739    i.SystemInit        system_stm32f1xx.o
-    0x080012a0   0x080012a0   0x00000002   Code   RO          156    i.UsageFault_Handler  stm32f1xx_it.o
-    0x080012a2   0x080012a2   0x00000020   Code   RO         1215    i.__NVIC_SetPriority  stm32f1xx_hal_cortex.o
-    0x080012c2   0x080012c2   0x00000002   PAD
-    0x080012c4   0x080012c4   0x00000048   Code   RO           16    i.main              main.o
-    0x0800130c   0x0800130c   0x00000018   Code   RO         1810    i.mymain            mymain.o
-    0x08001324   0x08001324   0x00000010   Data   RO         1740    .constdata          system_stm32f1xx.o
-    0x08001334   0x08001334   0x00000008   Data   RO         1741    .constdata          system_stm32f1xx.o
-    0x0800133c   0x0800133c   0x000005f0   Data   RO         1848    .constdata          oled.o
-    0x0800192c   0x0800192c   0x00000020   Data   RO         2086    Region$$Table       anon$$obj.o
+    0x08000474   0x08000474   0x00000010   Code   RO         1045    i.HAL_GPIO_TogglePin  stm32f1xx_hal_gpio.o
+    0x08000484   0x08000484   0x0000000a   Code   RO         1046    i.HAL_GPIO_WritePin  stm32f1xx_hal_gpio.o
+    0x0800048e   0x0800048e   0x00000002   PAD
+    0x08000490   0x08000490   0x0000000c   Code   RO          738    i.HAL_GetTick       stm32f1xx_hal.o
+    0x0800049c   0x0800049c   0x00000188   Code   RO          306    i.HAL_I2C_Init      stm32f1xx_hal_i2c.o
+    0x08000624   0x08000624   0x00000130   Code   RO          327    i.HAL_I2C_Mem_Write  stm32f1xx_hal_i2c.o
+    0x08000754   0x08000754   0x0000005c   Code   RO          224    i.HAL_I2C_MspInit   stm32f1xx_hal_msp.o
+    0x080007b0   0x080007b0   0x00000010   Code   RO          744    i.HAL_IncTick       stm32f1xx_hal.o
+    0x080007c0   0x080007c0   0x00000024   Code   RO          745    i.HAL_Init          stm32f1xx_hal.o
+    0x080007e4   0x080007e4   0x00000040   Code   RO          746    i.HAL_InitTick      stm32f1xx_hal.o
+    0x08000824   0x08000824   0x0000003c   Code   RO          225    i.HAL_MspInit       stm32f1xx_hal_msp.o
+    0x08000860   0x08000860   0x00000040   Code   RO         1208    i.HAL_NVIC_SetPriority  stm32f1xx_hal_cortex.o
+    0x080008a0   0x080008a0   0x00000024   Code   RO         1209    i.HAL_NVIC_SetPriorityGrouping  stm32f1xx_hal_cortex.o
+    0x080008c4   0x080008c4   0x0000012c   Code   RO          902    i.HAL_RCC_ClockConfig  stm32f1xx_hal_rcc.o
+    0x080009f0   0x080009f0   0x00000020   Code   RO          909    i.HAL_RCC_GetPCLK1Freq  stm32f1xx_hal_rcc.o
+    0x08000a10   0x08000a10   0x0000006c   Code   RO          911    i.HAL_RCC_GetSysClockFreq  stm32f1xx_hal_rcc.o
+    0x08000a7c   0x08000a7c   0x00000320   Code   RO          914    i.HAL_RCC_OscConfig  stm32f1xx_hal_rcc.o
+    0x08000d9c   0x08000d9c   0x00000028   Code   RO         1213    i.HAL_SYSTICK_Config  stm32f1xx_hal_cortex.o
+    0x08000dc4   0x08000dc4   0x00000002   Code   RO          150    i.HardFault_Handler  stm32f1xx_it.o
+    0x08000dc6   0x08000dc6   0x0000002e   Code   RO          348    i.I2C_IsAcknowledgeFailed  stm32f1xx_hal_i2c.o
+    0x08000df4   0x08000df4   0x000000a8   Code   RO          359    i.I2C_RequestMemoryWrite  stm32f1xx_hal_i2c.o
+    0x08000e9c   0x08000e9c   0x0000004c   Code   RO          363    i.I2C_WaitOnBTFFlagUntilTimeout  stm32f1xx_hal_i2c.o
+    0x08000ee8   0x08000ee8   0x00000068   Code   RO          364    i.I2C_WaitOnFlagUntilTimeout  stm32f1xx_hal_i2c.o
+    0x08000f50   0x08000f50   0x00000096   Code   RO          365    i.I2C_WaitOnMasterAddressFlagUntilTimeout  stm32f1xx_hal_i2c.o
+    0x08000fe6   0x08000fe6   0x0000004c   Code   RO          367    i.I2C_WaitOnTXEFlagUntilTimeout  stm32f1xx_hal_i2c.o
+    0x08001032   0x08001032   0x00000002   PAD
+    0x08001034   0x08001034   0x0000001c   Code   RO         1777    i.IIC_SAND_DATE     hread_interface.o
+    0x08001050   0x08001050   0x000000a0   Code   RO           14    i.MX_GPIO_Init      main.o
+    0x080010f0   0x080010f0   0x00000002   Code   RO          151    i.MemManage_Handler  stm32f1xx_it.o
+    0x080010f2   0x080010f2   0x00000002   Code   RO          152    i.NMI_Handler       stm32f1xx_it.o
+    0x080010f4   0x080010f4   0x00000034   Code   RO         1840    i.OLED_Cache_to_hardware  oled.o
+    0x08001128   0x08001128   0x0000008a   Code   RO         1841    i.OLED_Init         oled.o
+    0x080011b2   0x080011b2   0x00000028   Code   RO         1842    i.OLED_Init_Display_Buffer  oled.o
+    0x080011da   0x080011da   0x00000024   Code   RO         1843    i.OLED_Set_Pos      oled.o
+    0x080011fe   0x080011fe   0x00000010   Code   RO         1847    i.OLED_WrCmd        oled.o
+    0x0800120e   0x0800120e   0x00000010   Code   RO         1848    i.OLED_WrDat        oled.o
+    0x0800121e   0x0800121e   0x00000002   Code   RO          153    i.PendSV_Handler    stm32f1xx_it.o
+    0x08001220   0x08001220   0x00000002   Code   RO          154    i.SVC_Handler       stm32f1xx_it.o
+    0x08001222   0x08001222   0x00000004   Code   RO          155    i.SysTick_Handler   stm32f1xx_it.o
+    0x08001226   0x08001226   0x0000005e   Code   RO           15    i.SystemClock_Config  main.o
+    0x08001284   0x08001284   0x00000002   Code   RO         1739    i.SystemInit        system_stm32f1xx.o
+    0x08001286   0x08001286   0x00000002   Code   RO          156    i.UsageFault_Handler  stm32f1xx_it.o
+    0x08001288   0x08001288   0x00000020   Code   RO         1215    i.__NVIC_SetPriority  stm32f1xx_hal_cortex.o
+    0x080012a8   0x080012a8   0x00000048   Code   RO           16    i.main              main.o
+    0x080012f0   0x080012f0   0x0000002c   Code   RO         1810    i.mymain            mymain.o
+    0x0800131c   0x0800131c   0x00000010   Data   RO         1740    .constdata          system_stm32f1xx.o
+    0x0800132c   0x0800132c   0x00000008   Data   RO         1741    .constdata          system_stm32f1xx.o
+    0x08001334   0x08001334   0x00000020   Data   RO         2095    Region$$Table       anon$$obj.o
 
 
-    Execution Region RW_IRAM1 (Exec base: 0x20000000, Load base: 0x0800194c, Size: 0x000006c8, Max: 0x00005000, ABSOLUTE)
+    Execution Region RW_IRAM1 (Exec base: 0x20000000, Load base: 0x08001354, Size: 0x00000ac8, Max: 0x00005000, ABSOLUTE)
 
     Exec Addr    Load Addr    Size         Type   Attr      Idx    E Section Name        Object
 
-    0x20000000   0x0800194c   0x0000000c   Data   RW          752    .data               stm32f1xx_hal.o
-    0x2000000c   0x08001958   0x00000004   Data   RW         1742    .data               system_stm32f1xx.o
+    0x20000000   0x08001354   0x0000000c   Data   RW          752    .data               stm32f1xx_hal.o
+    0x2000000c   0x08001360   0x00000004   Data   RW         1742    .data               system_stm32f1xx.o
     0x20000010        -       0x00000054   Zero   RW           17    .bss                main.o
-    0x20000064        -       0x00000060   Zero   RW         1958    .bss                c_w.l(libspace.o)
-    0x200000c4   0x0800195c   0x00000004   PAD
-    0x200000c8        -       0x00000200   Zero   RW            2    HEAP                startup_stm32f103xb.o
-    0x200002c8        -       0x00000400   Zero   RW            1    STACK               startup_stm32f103xb.o
+    0x20000064        -       0x00000400   Zero   RW         1849    .bss                oled.o
+    0x20000464        -       0x00000060   Zero   RW         1967    .bss                c_w.l(libspace.o)
+    0x200004c4   0x08001364   0x00000004   PAD
+    0x200004c8        -       0x00000200   Zero   RW            2    HEAP                startup_stm32f103xb.o
+    0x200006c8        -       0x00000400   Zero   RW            1    STACK               startup_stm32f103xb.o
 
 
 ==============================================================================
@@ -1251,14 +1261,14 @@ Image component sizes
 
       Code (inc. data)   RO Data    RW Data    ZI Data      Debug   Object Name
 
-        28          6          0          0          0        624   hread_interface.o
+        28          6          0          0          0        920   hread_interface.o
        326         24          0          0         84     395176   main.o
-        24          8          0          0          0        429   mymain.o
-       340          4       1520          0          0       3956   oled.o
+        44          6          0          0          0        473   mymain.o
+       298          4          0          0       1024       3917   oled.o
         64         26        236          0       1536        816   startup_stm32f103xb.o
        128         24          0         12          0       5325   stm32f1xx_hal.o
        172         14          0          0          0      28298   stm32f1xx_hal_cortex.o
-       490         34          0          0          0       2904   stm32f1xx_hal_gpio.o
+       506         34          0          0          0       3521   stm32f1xx_hal_gpio.o
       1316         32          0          0          0       9219   stm32f1xx_hal_i2c.o
        152         20          0          0          0       1556   stm32f1xx_hal_msp.o
       1240         88          0          0          0       4645   stm32f1xx_hal_rcc.o
@@ -1266,9 +1276,9 @@ Image component sizes
          2          0         24          4          0       1131   system_stm32f1xx.o
 
     ----------------------------------------------------------------------
-      4310        280       1812         16       1620     457981   Object Totals
+      4302        278        292         16       2644     458899   Object Totals
          0          0         32          0          0          0   (incl. Generated)
-         8          0          0          0          0          0   (incl. Padding)
+         6          0          0          0          0          0   (incl. Padding)
 
     ----------------------------------------------------------------------
 
@@ -1316,15 +1326,15 @@ Image component sizes
 
       Code (inc. data)   RO Data    RW Data    ZI Data      Debug   
 
-      4664        296       1812         16       1720     456301   Grand Totals
-      4664        296       1812         16       1720     456301   ELF Image Totals
-      4664        296       1812         16          0          0   ROM Totals
+      4656        294        292         16       2744     457167   Grand Totals
+      4656        294        292         16       2744     457167   ELF Image Totals
+      4656        294        292         16          0          0   ROM Totals
 
 ==============================================================================
 
-    Total RO  Size (Code + RO Data)                 6476 (   6.32kB)
-    Total RW  Size (RW Data + ZI Data)              1736 (   1.70kB)
-    Total ROM Size (Code + RO Data + RW Data)       6492 (   6.34kB)
+    Total RO  Size (Code + RO Data)                 4948 (   4.83kB)
+    Total RW  Size (RW Data + ZI Data)              2760 (   2.70kB)
+    Total ROM Size (Code + RO Data + RW Data)       4964 (   4.85kB)
 
 ==============================================================================
 
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL_f103c8t6_KEIL.dep b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL_f103c8t6_KEIL.dep
index a41cc54..d0748d6 100644
--- a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL_f103c8t6_KEIL.dep
+++ b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/f103c8t6_KEIL_f103c8t6_KEIL.dep
@@ -29,8 +29,8 @@ I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash_ex.h)(0x6224463D)
 I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_i2c.h)(0x6224463D)
 I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pwr.h)(0x6224463D)
 I (./MYDEIVERS/mymain.h)(0x62590E47)
-I (./MYDEIVERS/oled.h)(0x625903B6)
-I (./MYDEIVERS/hread_interface.h)(0x6258FED0)
+I (./MYDEIVERS/oled.h)(0x62593CA4)
+I (./MYDEIVERS/hread_interface.h)(0x625910E8)
 F (../Core/Src/stm32f1xx_it.c)(0x62590B1B)(--c99 -c --cpu Cortex-M3 -D__EVAL -g -O3 --apcs=interwork --split_sections -I ../Core/Inc -I ../Drivers/STM32F1xx_HAL_Driver/Inc -I ../Drivers/STM32F1xx_HAL_Driver/Inc/Legacy -I ../Drivers/CMSIS/Device/ST/STM32F1xx/Include -I ../Drivers/CMSIS/Include -I ./MYDEIVERS

-I.\RTE\_f103c8t6_KEIL

-IC:\Users\wuwen\AppData\Local\Arm\Packs\ARM\CMSIS\5.8.0\CMSIS\Core\Include

-IC:\Users\wuwen\AppData\Local\Arm\Packs\Keil\STM32F1xx_DFP\2.4.0\Device\Include

-D__UVISION_VERSION="536" -D_RTE_ -DSTM32F10X_MD -D_RTE_ -DUSE_HAL_DRIVER -DSTM32F103xB

-o f103c8t6_keil\stm32f1xx_it.o --omf_browse f103c8t6_keil\stm32f1xx_it.crf --depend f103c8t6_keil\stm32f1xx_it.d)
 I (../Core/Inc/main.h)(0x62590B1B)
 I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal.h)(0x6224463D)
@@ -476,8 +476,8 @@ I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash.h)(0x6224463D)
 I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash_ex.h)(0x6224463D)
 I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_i2c.h)(0x6224463D)
 I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pwr.h)(0x6224463D)
-F (.\MYDEIVERS\hread_interface.c)(0x6258FE49)(--c99 -c --cpu Cortex-M3 -D__EVAL -g -O3 --apcs=interwork --split_sections -I ../Core/Inc -I ../Drivers/STM32F1xx_HAL_Driver/Inc -I ../Drivers/STM32F1xx_HAL_Driver/Inc/Legacy -I ../Drivers/CMSIS/Device/ST/STM32F1xx/Include -I ../Drivers/CMSIS/Include -I ./MYDEIVERS

-I.\RTE\_f103c8t6_KEIL

-IC:\Users\wuwen\AppData\Local\Arm\Packs\ARM\CMSIS\5.8.0\CMSIS\Core\Include

-IC:\Users\wuwen\AppData\Local\Arm\Packs\Keil\STM32F1xx_DFP\2.4.0\Device\Include

-D__UVISION_VERSION="536" -D_RTE_ -DSTM32F10X_MD -D_RTE_ -DUSE_HAL_DRIVER -DSTM32F103xB

-o f103c8t6_keil\hread_interface.o --omf_browse f103c8t6_keil\hread_interface.crf --depend f103c8t6_keil\hread_interface.d)
-I (MYDEIVERS\hread_interface.h)(0x6258FED0)
+F (.\MYDEIVERS\hread_interface.c)(0x625910E8)(--c99 -c --cpu Cortex-M3 -D__EVAL -g -O3 --apcs=interwork --split_sections -I ../Core/Inc -I ../Drivers/STM32F1xx_HAL_Driver/Inc -I ../Drivers/STM32F1xx_HAL_Driver/Inc/Legacy -I ../Drivers/CMSIS/Device/ST/STM32F1xx/Include -I ../Drivers/CMSIS/Include -I ./MYDEIVERS

-I.\RTE\_f103c8t6_KEIL

-IC:\Users\wuwen\AppData\Local\Arm\Packs\ARM\CMSIS\5.8.0\CMSIS\Core\Include

-IC:\Users\wuwen\AppData\Local\Arm\Packs\Keil\STM32F1xx_DFP\2.4.0\Device\Include

-D__UVISION_VERSION="536" -D_RTE_ -DSTM32F10X_MD -D_RTE_ -DUSE_HAL_DRIVER -DSTM32F103xB

-o f103c8t6_keil\hread_interface.o --omf_browse f103c8t6_keil\hread_interface.crf --depend f103c8t6_keil\hread_interface.d)
+I (MYDEIVERS\hread_interface.h)(0x625910E8)
 I (../Core/Inc/main.h)(0x62590B1B)
 I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal.h)(0x6224463D)
 I (../Core/Inc/stm32f1xx_hal_conf.h)(0x62590DE4)
@@ -504,7 +504,7 @@ I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash.h)(0x6224463D)
 I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash_ex.h)(0x6224463D)
 I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_i2c.h)(0x6224463D)
 I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pwr.h)(0x6224463D)
-F (.\MYDEIVERS\mymain.c)(0x62590E47)(--c99 -c --cpu Cortex-M3 -D__EVAL -g -O3 --apcs=interwork --split_sections -I ../Core/Inc -I ../Drivers/STM32F1xx_HAL_Driver/Inc -I ../Drivers/STM32F1xx_HAL_Driver/Inc/Legacy -I ../Drivers/CMSIS/Device/ST/STM32F1xx/Include -I ../Drivers/CMSIS/Include -I ./MYDEIVERS

-I.\RTE\_f103c8t6_KEIL

-IC:\Users\wuwen\AppData\Local\Arm\Packs\ARM\CMSIS\5.8.0\CMSIS\Core\Include

-IC:\Users\wuwen\AppData\Local\Arm\Packs\Keil\STM32F1xx_DFP\2.4.0\Device\Include

-D__UVISION_VERSION="536" -D_RTE_ -DSTM32F10X_MD -D_RTE_ -DUSE_HAL_DRIVER -DSTM32F103xB

-o f103c8t6_keil\mymain.o --omf_browse f103c8t6_keil\mymain.crf --depend f103c8t6_keil\mymain.d)
+F (.\MYDEIVERS\mymain.c)(0x62593CD5)(--c99 -c --cpu Cortex-M3 -D__EVAL -g -O3 --apcs=interwork --split_sections -I ../Core/Inc -I ../Drivers/STM32F1xx_HAL_Driver/Inc -I ../Drivers/STM32F1xx_HAL_Driver/Inc/Legacy -I ../Drivers/CMSIS/Device/ST/STM32F1xx/Include -I ../Drivers/CMSIS/Include -I ./MYDEIVERS

-I.\RTE\_f103c8t6_KEIL

-IC:\Users\wuwen\AppData\Local\Arm\Packs\ARM\CMSIS\5.8.0\CMSIS\Core\Include

-IC:\Users\wuwen\AppData\Local\Arm\Packs\Keil\STM32F1xx_DFP\2.4.0\Device\Include

-D__UVISION_VERSION="536" -D_RTE_ -DSTM32F10X_MD -D_RTE_ -DUSE_HAL_DRIVER -DSTM32F103xB

-o f103c8t6_keil\mymain.o --omf_browse f103c8t6_keil\mymain.crf --depend f103c8t6_keil\mymain.d)
 I (MYDEIVERS\mymain.h)(0x62590E47)
 I (../Core/Inc/main.h)(0x62590B1B)
 I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal.h)(0x6224463D)
@@ -532,10 +532,10 @@ I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash.h)(0x6224463D)
 I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash_ex.h)(0x6224463D)
 I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_i2c.h)(0x6224463D)
 I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pwr.h)(0x6224463D)
-I (MYDEIVERS\oled.h)(0x625903B6)
-I (MYDEIVERS\hread_interface.h)(0x6258FED0)
-F (.\MYDEIVERS\oled.c)(0x625902F3)(--c99 -c --cpu Cortex-M3 -D__EVAL -g -O3 --apcs=interwork --split_sections -I ../Core/Inc -I ../Drivers/STM32F1xx_HAL_Driver/Inc -I ../Drivers/STM32F1xx_HAL_Driver/Inc/Legacy -I ../Drivers/CMSIS/Device/ST/STM32F1xx/Include -I ../Drivers/CMSIS/Include -I ./MYDEIVERS

-I.\RTE\_f103c8t6_KEIL

-IC:\Users\wuwen\AppData\Local\Arm\Packs\ARM\CMSIS\5.8.0\CMSIS\Core\Include

-IC:\Users\wuwen\AppData\Local\Arm\Packs\Keil\STM32F1xx_DFP\2.4.0\Device\Include

-D__UVISION_VERSION="536" -D_RTE_ -DSTM32F10X_MD -D_RTE_ -DUSE_HAL_DRIVER -DSTM32F103xB

-o f103c8t6_keil\oled.o --omf_browse f103c8t6_keil\oled.crf --depend f103c8t6_keil\oled.d)
-I (MYDEIVERS\oled.h)(0x625903B6)
+I (MYDEIVERS\oled.h)(0x62593CA4)
+I (MYDEIVERS\hread_interface.h)(0x625910E8)
+F (.\MYDEIVERS\oled.c)(0x62593D0B)(--c99 -c --cpu Cortex-M3 -D__EVAL -g -O3 --apcs=interwork --split_sections -I ../Core/Inc -I ../Drivers/STM32F1xx_HAL_Driver/Inc -I ../Drivers/STM32F1xx_HAL_Driver/Inc/Legacy -I ../Drivers/CMSIS/Device/ST/STM32F1xx/Include -I ../Drivers/CMSIS/Include -I ./MYDEIVERS

-I.\RTE\_f103c8t6_KEIL

-IC:\Users\wuwen\AppData\Local\Arm\Packs\ARM\CMSIS\5.8.0\CMSIS\Core\Include

-IC:\Users\wuwen\AppData\Local\Arm\Packs\Keil\STM32F1xx_DFP\2.4.0\Device\Include

-D__UVISION_VERSION="536" -D_RTE_ -DSTM32F10X_MD -D_RTE_ -DUSE_HAL_DRIVER -DSTM32F103xB

-o f103c8t6_keil\oled.o --omf_browse f103c8t6_keil\oled.crf --depend f103c8t6_keil\oled.d)
+I (MYDEIVERS\oled.h)(0x62593CA4)
 I (../Core/Inc/main.h)(0x62590B1B)
 I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal.h)(0x6224463D)
 I (../Core/Inc/stm32f1xx_hal_conf.h)(0x62590DE4)
@@ -562,4 +562,5 @@ I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash.h)(0x6224463D)
 I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash_ex.h)(0x6224463D)
 I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_i2c.h)(0x6224463D)
 I (../Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pwr.h)(0x6224463D)
-I (MYDEIVERS\hread_interface.h)(0x6258FED0)
+I (MYDEIVERS\hread_interface.h)(0x625910E8)
+F (.\MYDEIVERS\fonts.c)(0x6259374C)(--c99 -c --cpu Cortex-M3 -D__EVAL -g -O3 --apcs=interwork --split_sections -I ../Core/Inc -I ../Drivers/STM32F1xx_HAL_Driver/Inc -I ../Drivers/STM32F1xx_HAL_Driver/Inc/Legacy -I ../Drivers/CMSIS/Device/ST/STM32F1xx/Include -I ../Drivers/CMSIS/Include -I ./MYDEIVERS

-I.\RTE\_f103c8t6_KEIL

-IC:\Users\wuwen\AppData\Local\Arm\Packs\ARM\CMSIS\5.8.0\CMSIS\Core\Include

-IC:\Users\wuwen\AppData\Local\Arm\Packs\Keil\STM32F1xx_DFP\2.4.0\Device\Include

-D__UVISION_VERSION="536" -D_RTE_ -DSTM32F10X_MD -D_RTE_ -DUSE_HAL_DRIVER -DSTM32F103xB

-o f103c8t6_keil\fonts.o --omf_browse f103c8t6_keil\fonts.crf --depend f103c8t6_keil\fonts.d)
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/fonts.crf b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/fonts.crf
new file mode 100644
index 0000000..3ff275a
Binary files /dev/null and b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/fonts.crf differ
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/fonts.d b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/fonts.d
new file mode 100644
index 0000000..754f61f
--- /dev/null
+++ b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/fonts.d
@@ -0,0 +1 @@
+f103c8t6_keil\fonts.o: MYDEIVERS\fonts.c
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/fonts.o b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/fonts.o
new file mode 100644
index 0000000..4714934
Binary files /dev/null and b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/fonts.o differ
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/hread_interface.crf b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/hread_interface.crf
index 954d1ba..adba91a 100644
Binary files a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/hread_interface.crf and b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/hread_interface.crf differ
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/hread_interface.o b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/hread_interface.o
index f225d18..4f8858f 100644
Binary files a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/hread_interface.o and b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/hread_interface.o differ
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/main.crf b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/main.crf
index bd9375b..7eb8518 100644
Binary files a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/main.crf and b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/main.crf differ
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/main.o b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/main.o
index cfbaa6b..fa62e02 100644
Binary files a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/main.o and b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/main.o differ
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/mymain.crf b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/mymain.crf
index c01c3a0..cc79b60 100644
Binary files a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/mymain.crf and b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/mymain.crf differ
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/mymain.o b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/mymain.o
index 4731550..9044bfc 100644
Binary files a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/mymain.o and b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/mymain.o differ
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/oled.crf b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/oled.crf
index 7073c8b..0d2f73a 100644
Binary files a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/oled.crf and b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/oled.crf differ
diff --git a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/oled.o b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/oled.o
index 6ff1789..67f68be 100644
Binary files a/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/oled.o and b/f103c8t6_keil/MDK-ARM/f103c8t6_KEIL/oled.o differ