Posted on February 23, 2018 at 09:49Hello,
I am trying to use the MPU6050 with a STM32F108. I configured the I2C and UART using cubeMx. I also have put pull up resistors on I2C sda scl. I use Keil.
As far as I understood, I have several options to read the measures from MPU6050.
I have defined
#define NB_TAB 6
#define I2C_TIMEOUT 10
#define REG_ADDRESS 0x59
#define MPU_ADDRESS (0x68<<1)
and the main code is
/* USER CODE BEGIN 2 */
uint8_t reponse[NB_TAB];
uint8_t reg = REG_ADDRESS;
HAL_UART_Transmit(&huart1, (uint8_t*)'Start\r\n', 7, 10);
HAL_StatusTypeDef status;
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
status = HAL_I2C_IsDeviceReady(&hi2c1, MPU_ADDRESS, 10, I2C_TIMEOUT);
if(status != HAL_OK){
HAL_UART_Transmit(&huart1, (uint8_t*)'ready_error\r\n', 13, 100);
}
status = HAL_I2C_Master_Transmit(&hi2c1, MPU_ADDRESS, ®, 2, I2C_TIMEOUT);
if(status != HAL_OK){
HAL_UART_Transmit(&huart1, (uint8_t*)'trans_error\r\n', 13, 100);
}
status = HAL_I2C_Master_Receive(&hi2c1, MPU_ADDRESS, reponse, NB_TAB, I2C_TIMEOUT);
if(status != HAL_OK){
HAL_UART_Transmit(&huart1, (uint8_t*)'recei_error\r\n', 13, 100);
}
//while(HAL_I2C_Mem_Read(&hi2c1, MPU_ADDRESS, REG_ADDRESS, 1, &val, 2, I2C_TIMEOUT) != HAL_OK);
HAL_UART_Transmit(&huart1, reponse, NB_TAB, 100);
/* USER CODE END WHILE */
The I2C is working well with arduino to transmit data but I can't read it.
The result printed on Termite 3.3 is [00][00] ...
I think that the issue comes from the 'response ' array because of of wrong type cast.
I tried many things but still the same result.
If anyone can help me
Thanks in advance.
