Solved
DFSDM CubeMX DMA Callback Issue
Hi
I configured the DFSDM1 on the STM32H753VIT6 for a MEMS Mic.
I got the problem that the DMA Callback on (Half)/Full buffer never gets called.
I used AN5027 as guideline and the DFSDM Audio Example
D-Cache disabled and set the Audio Sampling Frequency low (4kHz) to debug over UART.
Main (snippets):
DFSDM_Filter_HandleTypeDef hdfsdm1_filter0;
DFSDM_Channel_HandleTypeDef hdfsdm1_channel4;
DMA_HandleTypeDef hdma_dfsdm1_flt0;
.
.
.
.
int32_t LeftRecBuff[1024];
void HAL_DFSDM_FilterRegConvHalfCpltCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
/*Never Reached*/
}
int main(void)
{
HAL_Init();
SystemClock_Config();
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_DMA_Init();
MX_DFSDM1_Init();
/* USER CODE BEGIN 2 */
// imu_init(&hspi4, GPIOE, GPIO_PIN_4 /* IIM-42652 CS */);
HAL_DFSDM_FilterRegularStart_DMA(&hdfsdm1_filter0, LeftRecBuff, 1024);
while (1)
{}
}
Config (CubeMX)
/**
* @brief DFSDM1 Initialization Function
* @PAram None
* @retval None
*/
static void MX_DFSDM1_Init(void)
{
/* USER CODE BEGIN DFSDM1_Init 0 */
/* USER CODE END DFSDM1_Init 0 */
/* USER CODE BEGIN DFSDM1_Init 1 */
/* USER CODE END DFSDM1_Init 1 */
hdfsdm1_filter0.Instance = DFSDM1_Filter0;
hdfsdm1_filter0.Init.RegularParam.Trigger = DFSDM_FILTER_SW_TRIGGER;
hdfsdm1_filter0.Init.RegularParam.FastMode = ENABLE;
hdfsdm1_filter0.Init.RegularParam.DmaMode = ENABLE;
hdfsdm1_filter0.Init.FilterParam.SincOrder = DFSDM_FILTER_FASTSINC_ORDER;
hdfsdm1_filter0.Init.FilterParam.Oversampling = 750;
hdfsdm1_filter0.Init.FilterParam.IntOversampling = 1;
if (HAL_DFSDM_FilterInit(&hdfsdm1_filter0) != HAL_OK)
{
Error_Handler();
}
hdfsdm1_channel4.Instance = DFSDM1_Channel4;
hdfsdm1_channel4.Init.OutputClock.Activation = ENABLE;
hdfsdm1_channel4.Init.OutputClock.Selection = DFSDM_CHANNEL_OUTPUT_CLOCK_SYSTEM;
hdfsdm1_channel4.Init.OutputClock.Divider = 40;
hdfsdm1_channel4.Init.Input.Multiplexer = DFSDM_CHANNEL_EXTERNAL_INPUTS;
hdfsdm1_channel4.Init.Input.DataPacking = DFSDM_CHANNEL_STANDARD_MODE;
hdfsdm1_channel4.Init.Input.Pins = DFSDM_CHANNEL_SAME_CHANNEL_PINS;
hdfsdm1_channel4.Init.SerialInterface.Type = DFSDM_CHANNEL_SPI_RISING;
hdfsdm1_channel4.Init.SerialInterface.SpiClock = DFSDM_CHANNEL_SPI_CLOCK_INTERNAL;
hdfsdm1_channel4.Init.Awd.FilterOrder = DFSDM_CHANNEL_FASTSINC_ORDER;
hdfsdm1_channel4.Init.Awd.Oversampling = 1;
hdfsdm1_channel4.Init.Offset = 0;
hdfsdm1_channel4.Init.RightBitShift = 0x03;
if (HAL_DFSDM_ChannelInit(&hdfsdm1_channel4) != HAL_OK)
{
Error_Handler();
}
if (HAL_DFSDM_FilterConfigRegChannel(&hdfsdm1_filter0, DFSDM_CHANNEL_4, DFSDM_CONTINUOUS_CONV_ON) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN DFSDM1_Init 2 */
/* USER CODE END DFSDM1_Init 2 */
}
* Enable DMA controller clock
*/
static void MX_DMA_Init(void)
{
/* DMA controller clock enable */
__HAL_RCC_DMA1_CLK_ENABLE();
/* DMA interrupt init */
/* DMA1_Stream0_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA1_Stream0_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DMA1_Stream0_IRQn);
}
