89 lines
2.3 KiB
C
89 lines
2.3 KiB
C
/**
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******************************************************************************
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* @file bsp_basic_tim.c
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* @author STMicroelectronics
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* @version V1.0
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* @date 2020-xx-xx
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* @brief 基本定时器定时范例
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******************************************************************************
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* @attention
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*
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* 实验平台:野火 STM32 F429 开发板
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* 论坛 :http://www.firebbs.cn
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* 淘宝 :http://fire-stm32.taobao.com
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "tim.h"
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TIM_HandleTypeDef htim4;
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/* TIM4 init function */
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void MX_TIM4_Init(void)
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{
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TIM_ClockConfigTypeDef sClockSourceConfig = {0};
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TIM_MasterConfigTypeDef sMasterConfig = {0};
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//定时器时钟源TIMxCLK = 2 * PCLK1
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// PCLK1 = HCLK / 4
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// => TIMxCLK=HCLK/2=SystemCoreClock/2=72MHz
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// 设定定时器频率为=TIMxCLK/(TIM_Prescaler+1)=20000Hz
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htim4.Instance = TIM4;
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htim4.Init.Prescaler = 3600 - 1; // 20KHZ
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htim4.Init.CounterMode = TIM_COUNTERMODE_UP;
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htim4.Init.Period = 35;
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htim4.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
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htim4.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
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if (HAL_TIM_Base_Init(&htim4) != HAL_OK)
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{
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while(1);
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}
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sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
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if (HAL_TIM_ConfigClockSource(&htim4, &sClockSourceConfig) != HAL_OK)
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{
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while(1);
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}
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sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
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sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
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if (HAL_TIMEx_MasterConfigSynchronization(&htim4, &sMasterConfig) != HAL_OK)
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{
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while(1);
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}
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}
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void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* tim_baseHandle)
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{
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if(tim_baseHandle->Instance==TIM4)
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{
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/* TIM4 clock enable */
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__HAL_RCC_TIM4_CLK_ENABLE();
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//设置抢占优先级，子优先级/
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HAL_NVIC_SetPriority(TIM4_IRQn, 0, 1);
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// 设置中断来源
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HAL_NVIC_EnableIRQ(TIM4_IRQn);
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}
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}
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void HAL_TIM_Base_MspDeInit(TIM_HandleTypeDef* tim_baseHandle)
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{
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if(tim_baseHandle->Instance==TIM4)
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{
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/* Peripheral clock disable */
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__HAL_RCC_TIM4_CLK_DISABLE();
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/* TIM4 interrupt Deinit */
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HAL_NVIC_DisableIRQ(TIM4_IRQn);
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}
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}
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/* USER CODE BEGIN 1 */
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/* USER CODE END 1 */
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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