软件iic测试成功

2021-10-25 00:33:34 +08:00
parent 21c127e2b9
commit 39a9350cd1
10 changed files with 7082 additions and 6854 deletions
@@ -9,16 +9,80 @@
 #include "eeprom.h"
 #include "iic.h"

-
-
-
-
-void EEPROM_READ_BATY(uint16_t IN_DEVICE_ADD,char *DATAS,uint16_t LONG)
+//在AT24CXX指定地址读出一个数据
+//ReadAddr:开始读数的地址
+//返回值  :读到的数据
+uint8_t AT24CXX_ReadOneByte(uint16_t ReadAddr)
 {
-	IIC_READ_DATE(EEPROM_ADDRESS,IN_DEVICE_ADD,DATAS,LONG);
+	uint8_t temp=0;
+    IIC_Start();
+	if(EE_TYPE>AT24C16)
+	{
+		IIC_Send_Byte(0XA0);	   //发送写命令
+		IIC_Wait_Ack();
+		IIC_Send_Byte(ReadAddr>>8);//发送高地址
+		IIC_Wait_Ack();
+	}else IIC_Send_Byte(0XA0+((ReadAddr/256)<<1));   //发送器件地址0XA0,写数据
+
+	IIC_Wait_Ack();
+    IIC_Send_Byte(ReadAddr%256);   //发送低地址
+	IIC_Wait_Ack();
+	IIC_Start();
+	IIC_Send_Byte(0XA1);           //进入接收模式
+	IIC_Wait_Ack();
+    temp=IIC_Read_Byte(0);
+    IIC_Stop();//产生一个停止条件
+	return temp;
+}
+//在AT24CXX指定地址写入一个数据
+//WriteAddr  :写入数据的目的地址
+//DataToWrite:要写入的数据
+void AT24CXX_WriteOneByte(uint16_t WriteAddr,uint8_t DataToWrite)
+{
+    IIC_Start();
+	if(EE_TYPE>AT24C16)
+	{
+		IIC_Send_Byte(0XA0);	    //发送写命令
+		IIC_Wait_Ack();
+		IIC_Send_Byte(WriteAddr>>8);//发送高地址
+ 	}else
+	{
+		IIC_Send_Byte(0XA0+((WriteAddr/256)<<1));   //发送器件地址0XA0,写数据
+	}
+	IIC_Wait_Ack();
+    IIC_Send_Byte(WriteAddr%256);   //发送低地址
+	IIC_Wait_Ack();
+	IIC_Send_Byte(DataToWrite);     //发送字节
+	IIC_Wait_Ack();
+    IIC_Stop();//产生一个停止条件
+
 }

-void EEPROM_WRITE_BATY(uint16_t IN_DEVICE_ADD,char *DATAS,uint16_t LONG)
+
+//在AT24CXX里面的指定地址开始读出指定个数的数据
+//ReadAddr :开始读出的地址 对24c02为0~255
+//pBuffer  :数据数组首地址
+//NumToRead:要读出数据的个数
+void AT24CXX_Read(uint16_t ReadAddr,uint8_t *pBuffer,uint16_t NumToRead)
 {
-	IIC_SAND_DATE(EEPROM_ADDRESS,IN_DEVICE_ADD,DATAS,LONG);
+	while(NumToRead)
+	{
+		*pBuffer++=AT24CXX_ReadOneByte(ReadAddr++);
+		NumToRead--;
+	}
 }
+//在AT24CXX里面的指定地址开始写入指定个数的数据
+//WriteAddr :开始写入的地址 对24c02为0~255
+//pBuffer   :数据数组首地址
+//NumToWrite:要写入数据的个数
+void AT24CXX_Write(uint16_t WriteAddr,uint8_t *pBuffer,uint16_t NumToWrite)
+{
+	while(NumToWrite--)
+	{
+		AT24CXX_WriteOneByte(WriteAddr,*pBuffer);
+		WriteAddr++;
+		pBuffer++;
+	}
+}
+
+