STM32F4 Discovery TIM3 PWM Driver

最近在做四足机器人，采用的主控是STM32F407VGT6，之前写好的驱动因为电脑故障丢失了，后面偷懒想找现成程序，发现STM32F4的相关资源好少。STM32F4系列的PWM驱动和F1系列有一点小差异，这是在原子的程序上改写的，放到网上防止再次丢失，同时也希望能够帮助需要相似驱动程序的朋友们一点小忙。下面的程序采用TIM3输出4路PWM波，调用的程序在主函数里，很简单，就不贴出来了。

#include "pwm.h"

//定时器3PWM输出配置
void TIM3_PWM_Init(u32 arr,u32 psc)
{  
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
TIM_OCInitTypeDef  TIM_OCInitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);  //TIM3
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);

GPIO_PinAFConfig(GPIOB,GPIO_PinSource0,GPIO_AF_TIM3); //GPIOB¸
GPIO_PinAFConfig(GPIOB,GPIO_PinSource1,GPIO_AF_TIM3); //GPIOB¸
GPIO_PinAFConfig(GPIOB,GPIO_PinSource4,GPIO_AF_TIM3); //GPIOB¸´
GPIO_PinAFConfig(GPIOB,GPIO_PinSource5,GPIO_AF_TIM3); //GPIOB¸

GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_4 | GPIO_Pin_5;  //GPIOB
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;        //
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;      //
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;        //
GPIO_Init(GPIOB,&GPIO_InitStructure);               //
 
TIM_TimeBaseStructure.TIM_Prescaler=psc;  
TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up; 
TIM_TimeBaseStructure.TIM_Period=arr;                       
TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1; 

TIM_TimeBaseInit(TIM3,&TIM_TimeBaseStructure);                  


TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; 
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; 
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;

TIM_OC1Init(TIM3, &TIM_OCInitStructure); 
TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable);

TIM_OC2Init(TIM3, &TIM_OCInitStructure); 
TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable); 


TIM_OC3Init(TIM3, &TIM_OCInitStructure); 
TIM_OC3PreloadConfig(TIM3, TIM_OCPreload_Enable);  


TIM_OC4Init(TIM3, &TIM_OCInitStructure);  
TIM_OC4PreloadConfig(TIM3, TIM_OCPreload_Enable);  
 
        TIM_ARRPreloadConfig(TIM3,ENABLE);

TIM_Cmd(TIM3, ENABLE);  //ʹÄÜTIM3
 
 
}