Other Parts Discussed in Thread: DRV8711, DRV8711EVM
Tool/software:
I am trying to read the registers of DRV8711. However, I am not able to do that. I do not know what is the issue here. I am using STM32H735IGK6 Controller. I then try to read the registers through SPI Communication but I cannot do it. Please reviewmy code and tell me whatis the issue.
Code:-
void DRV8711_Write(uint8_t address, uint16_t data)
{
uint16_t frame = ((0 << 15) | ((address & 0x07) << 12) | (data & 0x0FFF));
uint8_t txData[2] = { (frame >> 8) & 0xFF, frame & 0xFF };
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_SET); // CS HIGH
HAL_SPI_Transmit(&hspi5, txData, 2, HAL_MAX_DELAY);
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_RESET); // CS = LOW
}
/**
* @brief Read a 12-bit value from DRV8711 register
* @param address : 3-bit register address (0x0–0x7)
* @return 12-bit register contents
*/
uint16_t DRV8711_Read(uint8_t address)
{
uint16_t cmd = ((1 << 15) | ((address & 0x07) << 12));
uint8_t txData[2] = { (cmd >> 8) & 0xFF, cmd & 0xFF };
uint8_t rxData[2] = {0};
// Frame 1: send read command
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_SET); // CS HIGH
HAL_SPI_TransmitReceive(&hspi5, txData, rxData, 2, HAL_MAX_DELAY);
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_RESET); // CS = LOW
return ((rxData[0] << 8) | rxData[1]) & 0x0FFF;
}
void DRV8711_Init(void)
{
// Example: configure CTRL register (0x0)
// MODE = 0 (Phase/Enable), ENBL=1
DRV8711_Write(0x0, 0x0001);
// Example: configure TORQUE register (0x1)
DRV8711_Write(0x1, 0x01FF);
// Example: configure DECAY register (0x2)
DRV8711_Write(0x2, 0x0000);
// ... configure other registers as needed
}
/**
* @brief Test function
*/
void DRV8711_Test(void)
{
uint16_t val;
DRV8711_Init();
val = DRV8711_Read(0x0); // Read back CTRL register
val = DRV8711_Read(0x1); // Read back TORQUE register
}
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_SPI5_Init();
/* USER CODE BEGIN 2 */
HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin, GPIO_PIN_RESET);
//
// HAL_GPIO_WritePin(Reset_GPIO_Port, Reset_Pin, GPIO_PIN_RESET);
// HAL_Delay(10);
HAL_GPIO_WritePin(Reset_GPIO_Port, Reset_Pin, GPIO_PIN_SET);
// HAL_Delay(10);
// HAL_GPIO_WritePin(Reset_GPIO_Port, Reset_Pin, GPIO_PIN_RESET);
HAL_GPIO_WritePin(Sleep_GPIO_Port, Sleep_Pin, GPIO_PIN_SET);
HAL_Delay(1000);
// uint16_t out = DRV8711_Read(0x00);
DRV8711_Test();
HAL_Delay(10);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
