Solved
STM32H5: PWM generation with DMA (classic approach)
Hello,
Finally I managed to produce a three-phase PWM in classic DMA mode with the pure HAL-Lib. (Hardware: NUCLEO-H563ZI)
However, within the cube produced routine, file: tim.c:
void HAL_TIM_PWM_MspInit(TIM_HandleTypeDef* tim_pwmHandle)
This wrong call appears:
__HAL_LINKDMA(tim_ocHandle, hdma[TIM_DMA_ID_CC4], handle_GPDMA1_Channel3);
It should be :
__HAL_LINKDMA(tim_pwmHandle, hdma[TIM_DMA_ID_CC4], handle_GPDMA1_Channel3);
To get rid of this error when re-generating the code from the Cube MX, I added
/* USER CODE BEGIN TIM1_MspInit 0 */
#define tim_ocHandle tim_pwmHandle
/* USER CODE END TIM1_MspInit 0 */
Did I something wrong or can this be fixed in the future?
Thanks a lot,
Andreas
Code generated by CubeMx:
void HAL_TIM_PWM_MspInit(TIM_HandleTypeDef* tim_pwmHandle)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
DMA_NodeConfTypeDef NodeConfig= {0};
if(tim_pwmHandle->Instance==TIM1)
{
/* USER CODE BEGIN TIM1_MspInit 0 */
#define tim_ocHandle tim_pwmHandle
/* USER CODE END TIM1_MspInit 0 */
/* TIM1 clock enable */
__HAL_RCC_TIM1_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
/**TIM1 GPIO Configuration
PB12 ------> TIM1_BKIN
*/
GPIO_InitStruct.Pin = GPIO_PIN_12;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_PULLDOWN;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.Alternate = GPIO_AF1_TIM1;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* TIM1 DMA Init */
/* GPDMA1_REQUEST_TIM1_CH4 Init */
NodeConfig.NodeType = DMA_GPDMA_LINEAR_NODE;
NodeConfig.Init.Request = GPDMA1_REQUEST_TIM1_CH4;
NodeConfig.Init.BlkHWRequest = DMA_BREQ_SINGLE_BURST;
NodeConfig.Init.Direction = DMA_MEMORY_TO_PERIPH;
NodeConfig.Init.SrcInc = DMA_SINC_INCREMENTED;
NodeConfig.Init.DestInc = DMA_DINC_FIXED;
NodeConfig.Init.SrcDataWidth = DMA_SRC_DATAWIDTH_WORD;
NodeConfig.Init.DestDataWidth = DMA_DEST_DATAWIDTH_WORD;
NodeConfig.Init.SrcBurstLength = 1;
NodeConfig.Init.DestBurstLength = 1;
NodeConfig.Init.TransferAllocatedPort = DMA_SRC_ALLOCATED_PORT0|DMA_DEST_ALLOCATED_PORT0;
NodeConfig.Init.TransferEventMode = DMA_TCEM_BLOCK_TRANSFER;
NodeConfig.Init.Mode = DMA_NORMAL;
NodeConfig.TriggerConfig.TriggerMode = DMA_TRIGM_SINGLE_BURST_TRANSFER;
NodeConfig.TriggerConfig.TriggerPolarity = DMA_TRIG_POLARITY_RISING;
NodeConfig.TriggerConfig.TriggerSelection = GPDMA1_TRIGGER_TIM2_TRGO;
NodeConfig.DataHandlingConfig.DataExchange = DMA_EXCHANGE_NONE;
NodeConfig.DataHandlingConfig.DataAlignment = DMA_DATA_RIGHTALIGN_ZEROPADDED;
if (HAL_DMAEx_List_BuildNode(&NodeConfig, &Node_GPDMA1_Channel3) != HAL_OK)
{
Error_Handler();
}
if (HAL_DMAEx_List_InsertNode(&List_GPDMA1_Channel3, NULL, &Node_GPDMA1_Channel3) != HAL_OK)
{
Error_Handler();
}
if (HAL_DMAEx_List_SetCircularMode(&List_GPDMA1_Channel3) != HAL_OK)
{
Error_Handler();
}
handle_GPDMA1_Channel3.Instance = GPDMA1_Channel3;
handle_GPDMA1_Channel3.InitLinkedList.Priority = DMA_LOW_PRIORITY_HIGH_WEIGHT;
handle_GPDMA1_Channel3.InitLinkedList.LinkStepMode = DMA_LSM_FULL_EXECUTION;
handle_GPDMA1_Channel3.InitLinkedList.LinkAllocatedPort = DMA_LINK_ALLOCATED_PORT0;
handle_GPDMA1_Channel3.InitLinkedList.TransferEventMode = DMA_TCEM_BLOCK_TRANSFER;
handle_GPDMA1_Channel3.InitLinkedList.LinkedListMode = DMA_LINKEDLIST_CIRCULAR;
if (HAL_DMAEx_List_Init(&handle_GPDMA1_Channel3) != HAL_OK)
{
Error_Handler();
}
if (HAL_DMAEx_List_LinkQ(&handle_GPDMA1_Channel3, &List_GPDMA1_Channel3) != HAL_OK)
{
Error_Handler();
}
__HAL_LINKDMA(tim_ocHandle, hdma[TIM_DMA_ID_CC4], handle_GPDMA1_Channel3);
if (HAL_DMA_ConfigChannelAttributes(&handle_GPDMA1_Channel3, DMA_CHANNEL_NPRIV) != HAL_OK)
{
Error_Handler();
}