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硬汉哥想问一下，dma+tim触发gpio翻转的方式能到25mhz吗这边测了只有十几兆 /* USER CODE BEGIN Header */
/**
******************************************************************************
* @file tim.c
* @brief This file provides code for the configuration
* of the TIM instances.
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "tim.h"
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
TIM_HandleTypeDef htim12;
/* TIM12 init function */
void MX_TIM12_Init(void)
{
/* USER CODE BEGIN TIM12_Init 0 */
/* USER CODE END TIM12_Init 0 */
TIM_ClockConfigTypeDef sClockSourceConfig = {0};
TIM_SlaveConfigTypeDef sSlaveConfig = {0};
TIM_MasterConfigTypeDef sMasterConfig = {0};
/* USER CODE BEGIN TIM12_Init 1 */
/* USER CODE END TIM12_Init 1 */
htim12.Instance = TIM12;
htim12.Init.Prescaler = 0;
htim12.Init.CounterMode = TIM_COUNTERMODE_UP;
htim12.Init.Period = 9;
htim12.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim12.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_Base_Init(&htim12) != HAL_OK)
{
Error_Handler();
}
sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
if (HAL_TIM_ConfigClockSource(&htim12, &sClockSourceConfig) != HAL_OK)
{
Error_Handler();
}
sSlaveConfig.SlaveMode = TIM_SLAVEMODE_DISABLE;
sSlaveConfig.InputTrigger = TIM_TS_ITR0;
if (HAL_TIM_SlaveConfigSynchro(&htim12, &sSlaveConfig) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim12, &sMasterConfig) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM12_Init 2 */
/* USER CODE END TIM12_Init 2 */
}
void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* tim_baseHandle)
{
if(tim_baseHandle->Instance==TIM12)
{
/* USER CODE BEGIN TIM12_MspInit 0 */
/* USER CODE END TIM12_MspInit 0 */
/* TIM12 clock enable */
__HAL_RCC_TIM12_CLK_ENABLE();
/* USER CODE BEGIN TIM12_MspInit 1 */
/* USER CODE END TIM12_MspInit 1 */
}
}
void HAL_TIM_Base_MspDeInit(TIM_HandleTypeDef* tim_baseHandle)
{
if(tim_baseHandle->Instance==TIM12)
{
/* USER CODE BEGIN TIM12_MspDeInit 0 */
/* USER CODE END TIM12_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_TIM12_CLK_DISABLE();
/* USER CODE BEGIN TIM12_MspDeInit 1 */
/* USER CODE END TIM12_MspDeInit 1 */
}
}
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file dma.c
* @brief This file provides code for the configuration
* of all the requested memory to memory DMA transfers.
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "dma.h"
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/*----------------------------------------------------------------------------*/
/* Configure DMA */
/*----------------------------------------------------------------------------*/
/* USER CODE BEGIN 1 */
ALIGN_32BYTES(__attribute__((section (".RAM_D1"))) uint32_t IO_Toggle[16]) =
{
0x0000ffe0U, 0xffe00000U, 0x0000ffe0U, 0xffe00000U,
0x0000ffe0U, 0xffe00000U, 0x0000ffe0U, 0xffe00000U,
0x0000ffe0U, 0xffe00000U, 0x0000ffe0U, 0xffe00000U,
0x0000ffe0U, 0xffe00000U, 0x0000ffe0U, 0xffe00000U,
};
/* USER CODE END 1 */
DMA_HandleTypeDef hdma_dma_generator0;
/**
* Enable DMA controller clock
* Configure DMA for memory to memory transfers
* hdma_dma_generator0
*/
void MX_DMA_Init(void)
{
/* DMA controller clock enable */
__HAL_RCC_DMA1_CLK_ENABLE();
/* Configure DMA request hdma_dma_generator0 on DMA1_Stream0 */
hdma_dma_generator0.Instance = DMA1_Stream0;
hdma_dma_generator0.Init.Request = DMA_REQUEST_GENERATOR0;
hdma_dma_generator0.Init.Direction = DMA_MEMORY_TO_PERIPH;
hdma_dma_generator0.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_dma_generator0.Init.MemInc = DMA_MINC_ENABLE;
hdma_dma_generator0.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
hdma_dma_generator0.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
hdma_dma_generator0.Init.Mode = DMA_CIRCULAR;
hdma_dma_generator0.Init.Priority = DMA_PRIORITY_VERY_HIGH;
hdma_dma_generator0.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
if (HAL_DMA_Init(&hdma_dma_generator0) != HAL_OK)
{
Error_Handler();
}
/* DMA interrupt init */
/* DMA1_Stream0_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA1_Stream0_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DMA1_Stream0_IRQn);
/* DMA1_Stream3_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA1_Stream3_IRQn, 1, 0);
HAL_NVIC_EnableIRQ(DMA1_Stream3_IRQn);
/* DMAMUX1_OVR_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMAMUX1_OVR_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DMAMUX1_OVR_IRQn);
}
/* USER CODE BEGIN 2 */
HAL_DMA_MuxRequestGeneratorConfigTypeDef dmamux_ReqGenParams = {0};
void test(void)
{
dmamux_ReqGenParams.SignalID = HAL_DMAMUX1_REQ_GEN_TIM12_TRGO;
dmamux_ReqGenParams.Polarity = HAL_DMAMUX_REQ_GEN_RISING;
dmamux_ReqGenParams.RequestNumber = 1;
HAL_DMAEx_ConfigMuxRequestGenerator(&hdma_dma_generator0, &dmamux_ReqGenParams);
HAL_DMAEx_EnableMuxRequestGenerator (&hdma_dma_generator0);
HAL_DMA_Start(&hdma_dma_generator0, (uint32_t)IO_Toggle, (uint32_t)&GPIOE->BSRR, 16);
}
/* USER CODE END 2 */
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