用南京万利电子的EK-STM32F开发板上调试程序，使用I2C1读写外部24C02芯片遇到在写PAGE时，发完开始条件后，一直在等待EV5，我用的是FWLIB里的I2C EXSAMPLE5例程，I2C 作如下修改以适应万利EK-STM32F开发板，这个问题论坛上有不少人提到，希望万利和ST写出可以在开发板上使用的例程。
i2c_ee.h
#define EEPROM_Block0_ADDRESS 0xA0 /* E2 = 0 */
i2c_ee.c
#define I2C_Speed 400000
#define I2C1_SLAVE_ADDRESS7 0xA0
#define I2C_PageSize 4
void I2C_EE_PageWrite(u8* pBuffer, u8 WriteAddr, u8 NumByteToWrite)
{
/* Send START condition */
I2C_GenerateSTART(I2C1, ENABLE);
/* Test on EV5 and clear it */
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
/* Send EEPROM address for write */
I2C_Send7bitAddress(I2C1, EEPROM_ADDRESS, I2C_Direction_Transmitter);
/* Test on EV6 and clear it */
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
/* Send the EEPROM's internal address to write to */
I2C_SendData(I2C1, WriteAddr);
/* Test on EV8 and clear it */
while(! I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
/* While there is data to be written */
while(NumByteToWrite--)
{
/* Send the current byte */
I2C_SendData(I2C1, *pBuffer);
/* Point to the next byte to be written */
pBuffer++;
/* Test on EV8 and clear it */
while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
}
/* Send STOP condition */
I2C_GenerateSTOP(I2C1, ENABLE);
} |
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