Posted on May 17, 2011 at 12:25If I write 8 bytes in a row the debuging hangs at EV5 check.
Here is my code. I dont know what to do, If I go step by step it works.
I have tried with I2C_DeInit(I2C1); at the stop command in the end but it dosent help.
void I2C_EE_ByteWrite(u8 wByte, u8 WriteAddr)
{
u32 I2C_TimeOut = 0x3FFFF;
int err = 0;
while(err == 0)
{
// Check busy flag
I2C_CheckEvent(I2C1, I2C_FLAG_BUSY);
/* Send STRAT 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, 0xA0, I2C_Direction_Transmitter);
/* Test on EV6 and clear it */
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED) && I2C_TimeOut)
{
I2C_TimeOut--;
}
if(I2C_GetFlagStatus(I2C1, I2C_FLAG_AF) != 0x0)
{
err = 0;
}
else
{
err = 1;
}
}
// Clear EV6 by setting again the PE bit
I2C_Cmd(I2C1, ENABLE);
// skicka adress till den minnesposition som data ska skrivas till (2ggr)
/* 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));
/* 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));
// skriv data
/* Send the byte to be written */
I2C_SendData(I2C1, wByte);
/* Test on EV8 and clear it */
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
/* Send STOP condition */
I2C_GenerateSTOP(I2C1, ENABLE);
}
