stm32U575 GPDMA PWM
STM32CubMx 版本 6.9.1
GPDMA
PWM
配置
法典
/* TIM4 初始化函数 */
void MX_TIM4_Init（void）
{
/* 用户代码以 4 开头TIM0_Init */
/* 用户代码结束 TIM4_Init 0 */
TIM_ClockConfigTypeDef sClockSourceConfig = {0};
TIM_MasterConfigTypeDef sMasterConfig = {0};
TIM_OC_InitTypeDef sConfigOC = {0};
/* USER CODE BEGIN TIM4_Init 1 */
/* USER CODE END TIM4_Init 1 */
htim4.Instance = TIM4;
htim4.Init.Prescaler = 159;
htim4.Init.CounterMode = TIM_COUNTERMODE_UP;
htim4.Init.Period = 9999;
htim4.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim4.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_Base_Init(&htim4) != HAL_OK)
{
Error_Handler();
}
sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
if (HAL_TIM_ConfigClockSource(&htim4, &sClockSourceConfig) != HAL_OK)
{
Error_Handler();
}
if (HAL_TIM_OC_Init(&htim4) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim4, &sMasterConfig) != HAL_OK)
{
Error_Handler();
}
sConfigOC.OCMode = TIM_OCMODE_TOGGLE;
sConfigOC.Pulse = 0;
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
if (HAL_TIM_OC_ConfigChannel(&htim4, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM4_Init 2 */
/* USER CODE END TIM4_Init 2 */
HAL_TIM_MspPostInit(&htim4);
}
if(tim_baseHandle->Instance==TIM4)
{
/* USER CODE BEGIN TIM4_MspInit 0 */
/* USER CODE END TIM4_MspInit 0 */
/* TIM4 clock enable */
__HAL_RCC_TIM4_CLK_ENABLE();
/* TIM4 DMA Init */
/* GPDMA1_REQUEST_TIM4_CH1 Init */
NodeConfig.NodeType = DMA_GPDMA_LINEAR_NODE;
NodeConfig.Init.Request = GPDMA1_REQUEST_TIM4_CH1;
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_INCREMENTED;
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.TriggerPolarity = DMA_TRIG_POLARITY_MASKED;
NodeConfig.DataHandlingConfig.DataExchange = DMA_EXCHANGE_NONE;
NodeConfig.DataHandlingConfig.DataAlignment = DMA_DATA_RIGHTALIGN_ZEROPADDED;
if (HAL_DMAEx_List_BuildNode(&NodeConfig, &Node_GPDMA1_Channel6) != HAL_OK)
{
Error_Handler();
}
if (HAL_DMAEx_List_InsertNode(&List_GPDMA1_Channel6, NULL, &Node_GPDMA1_Channel6) != HAL_OK)
{
Error_Handler();
}
if (HAL_DMAEx_List_SetCircularMode(&List_GPDMA1_Channel6) != HAL_OK)
{
Error_Handler();
}
handle_GPDMA1_Channel6.Instance = GPDMA1_Channel6;
handle_GPDMA1_Channel6.InitLinkedList.Priority = DMA_LOW_PRIORITY_HIGH_WEIGHT;
handle_GPDMA1_Channel6.InitLinkedList.LinkStepMode = DMA_LSM_FULL_EXECUTION;
handle_GPDMA1_Channel6.InitLinkedList.LinkAllocatedPort = DMA_LINK_ALLOCATED_PORT0;
handle_GPDMA1_Channel6.InitLinkedList.TransferEventMode = DMA_TCEM_BLOCK_TRANSFER;
handle_GPDMA1_Channel6.InitLinkedList.LinkedListMode = DMA_LINKEDLIST_CIRCULAR;
if (HAL_DMAEx_List_Init(&handle_GPDMA1_Channel6) != HAL_OK)
{
Error_Handler();
}
if (HAL_DMAEx_List_LinkQ(&handle_GPDMA1_Channel6, &List_GPDMA1_Channel6) != HAL_OK)
{
Error_Handler();
}
__HAL_LINKDMA(tim_baseHandle, hdma[TIM_DMA_ID_CC1], handle_GPDMA1_Channel6);
if (HAL_DMA_ConfigChannelAttributes(&handle_GPDMA1_Channel6, DMA_CHANNEL_NPRIV) != HAL_OK)
{
Error_Handler();
}
/* TIM4 interrupt Init */
HAL_NVIC_SetPriority(TIM4_IRQn, 5, 0);
HAL_NVIC_EnableIRQ(TIM4_IRQn);
/* USER CODE BEGIN TIM4_MspInit 1 */
/* USER CODE END TIM4_MspInit 1 */
}
uint32_t Buff[8]={3000,6000,7000,3000,6000,7000,3000,6000};
void TIM4_Init()
{
MX_TIM4_Init();
HAL_TIM_OC_Start_DMA(&htim4, TIM_CHANNEL_1,(uint32_t*)Buff,32);
}
void HAL_TIM_PWM_PulseFinishedCallback(TIM_HandleTypeDef *htim)
{
if(htim == (&htim4))
{
HAL_TIM_PWM_Stop_DMA(&htim4, TIM_CHANNEL_1);
}
}
problem
Only the first value has an effect
The following are all 10ms cycles for level flipping
The CCR values of other channels have also been changed
我想知道如何在STM32U575中实现DMA+PWM比较输出