
ST网站上的例程是读写24c08的,他的读函数有问题,原来我在51下一直模拟I2C操作的,用起来心里很有数,按照模拟I2C的步骤重写了读写函数,连续读写,自动处理跨页问题,很容易修改成24C08/32/128/512的读写函数,把我的代码公布如下: void I2C_AcknowledgePolling(void){ do{ I2C_GenerateSTART(I2C1,ENABLE); I2C_ReadRegister(I2C1,I2C_Register_SR1);//清除ADDR位 I2C_Send7bitAddress(I2C1,0xa0,I2C_Direction_Transmitter); }while(!(I2C_ReadRegister(I2C1,I2C_Register_SR1)&0x0002)); I2C_ClearFlag(I2C1,I2C_FLAG_AF); } void I2C_SequentialRead_AT24C01_02(u8 sla,u8 suba,u8 *pHead,u8 len){ u8 i; I2C_AcknowledgePolling(); I2C_GenerateSTART(I2C1,ENABLE); while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_MODE_SELECT)); I2C_SendData(I2C1,sla); while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED)); I2C_SendData(I2C1,suba); while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_BYTE_TRANSMITTED)); I2C_GenerateSTART(I2C1,ENABLE); while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_MODE_SELECT)); I2C_SendData(I2C1,sla+1); while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED)); if(len>1){ for(i=0;i |
RE:终于搞定了STM32读写EEPROM
RE:终于搞定了STM32读写EEPROM
RE:终于搞定了STM32读写EEPROM
RE:终于搞定了STM32读写EEPROM
RE:终于搞定了STM32读写EEPROM
RE:终于搞定了STM32读写EEPROM
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));
怎么也是过不去,但是有时候能写一次读一次,第二次就不行了!打过技术支持的电话说,最好不要用硬件了,建议用软件模拟!哎,无语!