/**
  ******************************************************************************
  * @file    bsp_basic_tim.c
  * @author  STMicroelectronics
  * @version V1.0
  * @date    2020-xx-xx
  * @brief   基本定时器定时范例
  ******************************************************************************
  * @attention
  *
  * 实验平台:野火  STM32 F429 开发板  
  * 论坛    :http://www.firebbs.cn
  * 淘宝    :http://fire-stm32.taobao.com
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "tim.h"

TIM_HandleTypeDef htim4;

/* TIM4 init function */
void MX_TIM4_Init(void)
{
  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
  TIM_MasterConfigTypeDef sMasterConfig = {0};
	//定时器时钟源TIMxCLK = 2 * PCLK1  
	//				PCLK1 = HCLK / 4 
	//				=> TIMxCLK=HCLK/2=SystemCoreClock/2=72MHz
	// 设定定时器频率为=TIMxCLK/(TIM_Prescaler+1)=20000Hz
  htim4.Instance = TIM4;
  htim4.Init.Prescaler = 3600 - 1;  // 20KHZ
  htim4.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim4.Init.Period = 35;
  htim4.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim4.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
  if (HAL_TIM_Base_Init(&htim4) != HAL_OK)
  {
    while(1);
  }
  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
  if (HAL_TIM_ConfigClockSource(&htim4, &sClockSourceConfig) != HAL_OK)
  {
    while(1);
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim4, &sMasterConfig) != HAL_OK)
  {
    while(1);
  }

}

void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* tim_baseHandle)
{

  if(tim_baseHandle->Instance==TIM4)
  {
    /* TIM4 clock enable */
    __HAL_RCC_TIM4_CLK_ENABLE();

    //设置抢占优先级，子优先级/
    HAL_NVIC_SetPriority(TIM4_IRQn, 0, 1);
		// 设置中断来源
    HAL_NVIC_EnableIRQ(TIM4_IRQn);
  }
}

void HAL_TIM_Base_MspDeInit(TIM_HandleTypeDef* tim_baseHandle)
{

  if(tim_baseHandle->Instance==TIM4)
  {
    /* Peripheral clock disable */
    __HAL_RCC_TIM4_CLK_DISABLE();

    /* TIM4 interrupt Deinit */
    HAL_NVIC_DisableIRQ(TIM4_IRQn);
  }
}

/* USER CODE BEGIN 1 */

/* USER CODE END 1 */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/