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標題: STM32 PWM輸出程序源碼+頭文件 [打印本頁]
作者: QINGTAOBAOJIAO    時間: 2018-3-16 10:07
標題: STM32 PWM輸出程序源碼+頭文件
#include "pbdata.h"
void RCC_Configuration(void);
void GPIO_Configuration(void);
void TIM3_Configuration(void);
int main(void)
{  
  u8 led_fx=1;
   u16 led_dt=0;

   RCC_Configuration(); //系統(tǒng)時鐘初始化
   GPIO_Configuration();//端口初始化
   TIM3_Configuration();
   
   while(1)
  {
    if(led_fx==1)
    led_dt++;
   else
    led_det--;
   if(led_dt==300)
       led_fx=0;
   if(led_det==0)
    led_fx=0;
      
   TIM_SetCompare2(TIM3, led_dt);   
  }   
}
void RCC_Configuration(void)
{
  SystemInit ();
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB1Periph_AFIO,ENABLE);
}
void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
//LED
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_5;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;
GPIO_Init(GPIOB,&GPIO_InitStructure);
}
void TIM3_Configuration(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStruct;
TIM_OCInitTypeDef TIM_OCInitStructure;

GPIO_PinRemapConfig(GPIO_PartialRemap_TIM3, ENABLE);
//TIM3初始化
TIM_TimeBaseStruct.TIM_Period=900;//初值
TIM_TimeBaseStruct.TIM_Prescaler=0;//預分頻
TIM_TimeBaseStruct.TIM_ClockDivision=0;
TIM_TimeBaseStruct.TIM_CounterMode=TIM_CounterMode_Up;//向上
TIM_TimeBaseInit(TIM3,&TIM_TimeBaseStruct);
//PWM初始化
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
  
TIM_OC2Init(TIM3,&TIM_OCInitStructure);
TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable);

TIM_Cmd(TIM3,ENABLE);  
}

pwm.rar

1.11 MB, 下載次數(shù): 28, 下載積分: 黑幣 -5

完整工程文件



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