Hi all,
I have problem to get work stm32h743 as parallel synchronous transmission with DMA and 16bits GPIO and timer as clok. I need something like in Application note AN4666 but for H7xx.
I'm using GPIO port E what is on AHB4 and it si D3 domain and Timer 1 chanel 1 pwm output as clok. TIM1 is on APB2
pwm is running but i don't get any data from Port E
here is some documentation what i going through but no success .
en.DM00306681, en.DM00387108, RM0433
I'm using SW4STM32 and HAL lib.
Any advice ?
Thank you
In main()
if(enable == 1){
SCB_CleanInvalidateDCache();
HAL_DMA_Abort(htim1.hdma[TIM_DMA_ID_CC1]);
HAL_DMA_DeInit(htim1.hdma[TIM_DMA_ID_CC1]);
MX_DMA_Init();
MX_TIM1_Init();
/* USER CODE BEGIN 2 */
//HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_1);
htim1.hdma[TIM_DMA_ID_CC1]->XferCpltCallback = TransferComplete;
htim1.hdma[TIM_DMA_ID_CC1]->XferErrorCallback = TransferError;
if (HAL_DMA_Start_IT(htim1.hdma[TIM_DMA_ID_CC1], (uint32_t)&asrc_buffer, (uint32_t)&(GPIOE->ODR), FULL_FRAME_SIZE) != HAL_OK)
{
/* Transfer Error */
Error_Handler();
}
__HAL_DMA_DISABLE_IT(htim1.hdma[TIM_DMA_ID_CC1], DMA_IT_HT);
__HAL_TIM_ENABLE_DMA(&htim1, TIM_DMA_CC1);
/*Start TIM PWM channel 1 */
if (HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_1) != HAL_OK)
{
//PWM Generation Error
Error_Handler();
}
enable = 0;
HAL_Delay(500);
}
init
void HAL_TIM_PWM_MspInit(TIM_HandleTypeDef* htim_pwm)
{
if(htim_pwm->Instance==TIM1)
{
/* USER CODE BEGIN TIM1_MspInit 0 */
/* USER CODE END TIM1_MspInit 0 */
/* Peripheral clock enable */
__HAL_RCC_TIM1_CLK_ENABLE();
/* TIM1 DMA Init */
/* TIM1_CH1 Init */
hdma_tim1_ch1.Instance = DMA2_Stream6;
hdma_tim1_ch1.Init.Request = DMA_REQUEST_TIM1_CH1;
hdma_tim1_ch1.Init.Direction = DMA_MEMORY_TO_PERIPH;
hdma_tim1_ch1.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_tim1_ch1.Init.MemInc = DMA_MINC_ENABLE;
hdma_tim1_ch1.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
hdma_tim1_ch1.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
hdma_tim1_ch1.Init.Mode = DMA_NORMAL;
hdma_tim1_ch1.Init.Priority = DMA_PRIORITY_HIGH;
hdma_tim1_ch1.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
//hdma_tim1_ch1.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_1QUARTERFULL;
hdma_tim1_ch1.Init.MemBurst = DMA_MBURST_SINGLE;
hdma_tim1_ch1.Init.PeriphBurst = DMA_PBURST_SINGLE;
if (HAL_DMA_Init(&hdma_tim1_ch1) != HAL_OK)
{
Error_Handler();
}
__HAL_LINKDMA(htim_pwm,hdma[TIM_DMA_ID_CC1],hdma_tim1_ch1);
/* USER CODE BEGIN TIM1_MspInit 1 */
/* USER CODE END TIM1_MspInit 1 */
}
}
init TIM1 PWM is running at 1.3MHz
static void MX_TIM1_Init(void)
{
/* USER CODE BEGIN TIM1_Init 0 */
/* USER CODE END TIM1_Init 0 */
TIM_OC_InitTypeDef sConfigOC = {0};
/* USER CODE BEGIN TIM1_Init 1 */
/* USER CODE END TIM1_Init 1 */
htim1.Instance = TIM1;
htim1.Init.Prescaler = 0;
htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
htim1.Init.Period = 0xAA;
htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim1.Init.RepetitionCounter = 0;
htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_PWM_Init(&htim1) != HAL_OK)
{
Error_Handler();
}
sConfigOC.OCMode = TIM_OCMODE_PWM1;
sConfigOC.Pulse = 0x55;
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;
sConfigOC.OCFastMode = TIM_OCFAST_ENABLE;
sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM1_Init 2 */
/* USER CODE END TIM1_Init 2 */
HAL_TIM_MspPostInit(&htim1);
}
static void MX_DMA_Init(void)
{
/* DMA controller clock enable */
__HAL_RCC_DMA2_CLK_ENABLE();
/* DMA interrupt init */
/* DMA2_Stream6_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA2_Stream6_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DMA2_Stream6_IRQn);
}
