Posted on April 03, 2018 at 15:25I'm new for STM32 family. I use STM32 nucleo64 F401RE development board and Keil5 with STM32CubeMX for software. I have problem about sending data with I2C. the slave IC has 4 register group. the each group register has different address and 31 register. 1. group register slave address is F0, 2
. group register slave address is F4,
3. group register slave address is F8 and 4. group register slave address is FC,
If I send data to register group F8 or FC I can send all data (address +register addres+data0+data1.....+data30) every time.
If I send data to register group F0 or F4 I can not send data. I have HAL_TIMEOUT error during send slave address. Even if the slave IC send acknowledge.
I have this problem in
static HAL_StatusTypeDef I2C_WaitOnMasterAddressFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, uint32_t Timeout, uint32_t Tickstart)
{
while(_
_HAL_I2C_GET_FLAG(hi2c, Flag) == RESET)
{
if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == SET)
{
/* Generate Stop */
hi2c->Instance->CR1 |= I2C_CR1_STOP;
/* Clear AF Flag */
__HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
hi2c->ErrorCode = HAL_I2C_ERROR_AF;
hi2c->PreviousState = I2C_STATE_NONE;
hi2c->State= HAL_I2C_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hi2c);
return HAL_ERROR;
}
/* Check for the Timeout */
if(Timeout != HAL_MAX_DELAY)
{
if((Timeout == 0U)||((HAL_GetTick() - Tickstart ) > Timeout))
{
hi2c->PreviousState = I2C_STATE_NONE;
hi2c->State= HAL_I2C_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hi2c);
return HAL_TIMEOUT;
}
}
}
return HAL_OK;
when I debug software, if I send data to F8 or FC __HAL_I2C_GET_FLAG(hi2c, Flag) return 1
and I can send all data
but if I send data to F0 or F4 __HAL_I2C_GET_FLAG(hi2c, Flag) return 0
and I can not send data I have HAL_TIMEOUT error
NOTE: when I check signals with oscilloscope and logic analyzer there are no any different
addres sending sequence when I send F0,F4 or F8,FC.
NOTE: when I use another company development board I can send data to all register group
I couldnt find any reason even if I spend too much time and search.
I need to help to solve this problem
thanks
fatih
#i2c-hal_timeout-error
