STM32F103C8T6定时器2,定时器3,定时器4初始化

以下是STM32F103C8T6的定时器2、定时器3、定时器4初始化的示例代码：

定时器2初始化：

#include "stm32f10x.h"

void TIM2_Init(void)
{
  TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct;

  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);

  TIM_TimeBaseInitStruct.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInitStruct.TIM_ClockDivision = TIM_CKD_DIV1;
  TIM_TimeBaseInitStruct.TIM_Prescaler = 7200 - 1;
  TIM_TimeBaseInitStruct.TIM_Period = 10000 - 1;
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseInitStruct);

  TIM_Cmd(TIM2, ENABLE);
}

定时器3初始化：

#include "stm32f10x.h"

void TIM3_Init(void)
{
  TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct;

  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);

  TIM_TimeBaseInitStruct.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInitStruct.TIM_ClockDivision = TIM_CKD_DIV1;
  TIM_TimeBaseInitStruct.TIM_Prescaler = 7200 - 1;
  TIM_TimeBaseInitStruct.TIM_Period = 10000 - 1;
  TIM_TimeBaseInit(TIM3, &TIM_TimeBaseInitStruct);

  TIM_Cmd(TIM3, ENABLE);
}

定时器4初始化：

#include "stm32f10x.h"

void TIM4_Init(void)
{
  TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct;

  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);

  TIM_TimeBaseInitStruct.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInitStruct.TIM_ClockDivision = TIM_CKD_DIV1;
  TIM_TimeBaseInitStruct.TIM_Prescaler = 7200 - 1;
  TIM_TimeBaseInitStruct.TIM_Period = 10000 - 1;
  TIM_TimeBaseInit(TIM4, &TIM_TimeBaseInitStruct);

  TIM_Cmd(TIM4, ENABLE);
}

以上代码中，使用了TIM_TimeBaseInitTypeDef结构体来配置定时器的基本参数，包括计数模式、分频系数、预分频系数和周期。在初始化完成之后，通过TIM_Cmd()函数启动定时器。