解决了因为汉字在两个数据块直接导致的数据流乱码，

下个版本打算两字节两个字节的读取，这样就就不怕数据块中
换行太多导致显示不下。

Signed-off-by: 无闻风 <53944749+wuwenfengmi1998@users.noreply.github.com>

103ze/mycode/c.c

@@ -9,15 +9,24 @@
 #include "text.h"
 #include "fatfs.h"
 #include "fatfs_sd.h"
+
+#define KEY_UP 		HAL_GPIO_ReadPin(KEY_UP_GPIO_Port,KEY_UP_Pin)
+#define KEY_B 		HAL_GPIO_ReadPin(KEY_B_GPIO_Port,KEY_B_Pin)
+#define KEY_DOWN    HAL_GPIO_ReadPin(KEY_DOWN_GPIO_Port,KEY_DOWN_Pin)
+
 FATFS SD;
 
+#define fuck 256
+
 int my_main()
 {
 	uint8_t res;
 	FIL fil;
-	char fil_buff[128];
-	uint16_t br=128;
-	char str[16];
+	char fil_buff[fuck+1]={0};
+	char fuck_flag=0;
+	char fuck_buff;
+	uint16_t br=0;
+	char str[fuck+1]={0};
 	LCD_BL(0);
 	LCDx_Init();
 	LCD_Clear(GRAY);
@@ -29,8 +38,7 @@ int my_main()
 
 	f_mount(&SD,"0:",1);
 	res=f_open(&fil,"0:/demo.txt",FA_READ);
-	res=f_read(&fil,fil_buff,64,(UINT*)&br);
-	LCD_ShowString(0,0,fil_buff,16,RED,BLUE,64);
+
 
 	/*
 	sprintf(str,"%02x\n%02x\n%02x\n%02x\n%02x",ftinfo.fontok,ftinfo.ugbkaddr,ftinfo.ugbksize,ftinfo.f12addr,ftinfo.gbk12size);
@@ -40,6 +48,44 @@ int my_main()
 	*/
 	while(1)
 	{
+		if(KEY_UP==0)
+		{
+			HAL_Delay(10);
+			while(KEY_UP==0);
+			LCD_Clear(WHITE);
+			for(int a=0;a<fuck+1;a++)
+			{
+				fil_buff[a]=0;
+				str[a]=0;
+			}
+
+			if(fuck_flag==1)
+			{
+				fuck_flag=0;
+				res=f_read(&fil,fil_buff,fuck-1,(UINT*)&br);
+				for(int a=fuck-2;a>0;a--)
+				{
+					fil_buff[a+1]=fil_buff[a];
+				}
+				fil_buff[0]=fuck_buff;
+
+			}else
+			{
+				res=f_read(&fil,fil_buff,fuck,(UINT*)&br);
+			}
+
+			if((fil_buff[fuck-1]>127)&&(fil_buff[fuck-2]<128))
+			{
+				fuck_buff=fil_buff[fuck-1];
+				fil_buff[fuck-1]='\0';
+				fuck_flag=1;
+
+			}
+
+			sprintf(str,"%s\0",fil_buff);
+			LCD_ShowString(0,0,str,16,WHITE,BLACK,fuck);
+
+		}
 
 	}
 

103ze/mycode/fatfs_sd.c

@@ -24,15 +24,19 @@ static uint8_t PowerFlag = 0;
 #define SD_CS_GPIO_Port GPIOD
 #define SD_CS_Pin GPIO_PIN_2
 
-volatile uint8_t Timer1, Timer2;
+volatile uint32_t Timer1, Timer2;
 
 void SDTimer_Handler(void)
 {
   if(Timer1 > 0)
-    Timer1--;
-
+  {
+	  Timer1--;
+  }
   if(Timer2 > 0)
-    Timer2--;
+  {
+	  Timer2--;
+  }
+
 }
 
 /* SPI Chip Select */
@@ -79,13 +83,14 @@ static uint8_t SD_ReadyWait(void)
   uint8_t res;
 
 
-  Timer2 = 50;
+  Timer2 = 50000;
   SPI_RxByte();
 
   do
   {
 
     res = SPI_RxByte();
+    Timer2--;
   } while ((res != 0xFF) && Timer2);
 
   return res;
@@ -152,13 +157,11 @@ static bool SD_RxDataBlock(BYTE *buff, UINT btr)
 {
   uint8_t token;
 
-
-  Timer1 = 10;
-
-
+  Timer1 = 10000;
   do
   {
     token = SPI_RxByte();
+    Timer1--;
   } while((token == 0xFF) && Timer1);
 
 
@@ -297,7 +300,7 @@ DSTATUS SD_disk_initialize(BYTE drv)
   if (SD_SendCmd(CMD0, 0) == 1)
   {
 
-    Timer1 = 100;
+    Timer1 = 100000;
 
 
     if (SD_SendCmd(CMD8, 0x1AA) == 1)
@@ -314,6 +317,7 @@ DSTATUS SD_disk_initialize(BYTE drv)
         do {
           if (SD_SendCmd(CMD55, 0) <= 1 && SD_SendCmd(CMD41, 1UL << 30) == 0)
             break; /* ACMD41 with HCS bit */
+          Timer1--;
         } while (Timer1);
 
         if (Timer1 && SD_SendCmd(CMD58, 0) == 0)
@@ -344,6 +348,7 @@ DSTATUS SD_disk_initialize(BYTE drv)
           if (SD_SendCmd(CMD1, 0) == 0)
             break; /* CMD1 */
         }
+        Timer1--;
       } while (Timer1);
 
       if (!Timer1 || SD_SendCmd(CMD16, 512) != 0)

103ze/mycode/text.c

@@ -361,6 +361,10 @@ void LCD_ShowString(uint16_t x,uint16_t y,uint8_t *p,uint8_t size,uint16_t bg,ui
 		if(*p=='\r')
 		{
 				p++;
+				if(*p!='\n')
+				{
+					return ;
+				}
 		}
 		if(*p=='\n')
 		{
@@ -368,15 +372,17 @@ void LCD_ShowString(uint16_t x,uint16_t y,uint8_t *p,uint8_t size,uint16_t bg,ui
 				y+=size;
 				p++;
 		}
-		if(*p<127)
-		{
-			LCD_ShowChar(x,y,*p,size,bg,color);
-			x+=(size/2);
-		}else
+		if(*p>127)
 		{
+
+
 			Show_Font(x,y,p,size,bg,color);
 			p++;
 			x+=size;
+		}else
+		{
+			LCD_ShowChar(x,y,*p,size,bg,color);
+			x+=(size/2);
 		}
 		p++;