Challeng with I2C1 and I2C2
Hello,
I am working with a costumer board using STM32F105. There are some LED drivers working I2C1 and I2c2.
Configuration for serial interfaces is:
void MX_I2C1_Init(void)
{
/* USER CODE BEGIN I2C1_Init 0 */
/* USER CODE END I2C1_Init 0 */
/* USER CODE BEGIN I2C1_Init 1 */
/* USER CODE END I2C1_Init 1 */
hi2c1.Instance = I2C1;
hi2c1.Init.ClockSpeed = 100000;
hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
hi2c1.Init.OwnAddress1 = 0;
hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c1.Init.OwnAddress2 = 0;
hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_I2C_Init(&hi2c1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN I2C1_Init 2 */
/* USER CODE END I2C1_Init 2 */
}
/* I2C2 init function */
void MX_I2C2_Init(void)
{
/* USER CODE BEGIN I2C2_Init 0 */
/* USER CODE END I2C2_Init 0 */
/* USER CODE BEGIN I2C2_Init 1 */
/* USER CODE END I2C2_Init 1 */
hi2c2.Instance = I2C2;
hi2c2.Init.ClockSpeed = 100000;
hi2c2.Init.DutyCycle = I2C_DUTYCYCLE_2;
hi2c2.Init.OwnAddress1 = 0;
hi2c2.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c2.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c2.Init.OwnAddress2 = 0;
hi2c2.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c2.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_I2C_Init(&hi2c2) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN I2C2_Init 2 */
/* USER CODE END I2C2_Init 2 */
}
HW connections should be correct, because I am able to turn all LEDs which they configured in I2C1 and I2C2. But after some tries, I miss I2C1 and ErrorCode 32 (Timeout error) show up.
For I2C1, the errorcode is 32, and for I2C2 there is no error.
I am using 10ms for timeout for both I2C's, and it doesn't help if I put more timeout.
I am using following function to write the value on serial interface with related data:
void WriteRegister(HandleTypeDef* handle, uint8_t register_address, uint8_t value)
{
uint8_t buf[2];
buf[0] = register_address;
buf[1] = value;
HAL_I2C_Master_Transmit(handle->Init.I2C_Bus, handle->Init.I2C_Device_Address, buf, 2, handle->Init.I2C_Transmit_Timeout_Milliseconds);
}
Any idea?
Thank you.
