STM32 通用定时器的几种配置方式

TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //输出使能通道3
TIM_OCInitStructure.TIM_Pulse =CCR3_VAL;
TIM_OCInitStructure.TIM_OCPolarity =TIM_OCPolarity_High;

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

TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //输出使能通道4
TIM_OCInitStructure.TIM_Pulse =CCR4_VAL;

TIM_OC4Init(TIMx,&TIM_OCInitStructure);
TIM_OC4PreloadConfig(TIMx,TIM_OCPreload_Enable);

TIM_ARRPreloadConfig(TIMx,ENABLE); //开启ARR预装载
TIM_Cmd(TIMx,ENABLE); //启动定时器
}

void Time_OUT_PWM_Init(void)
{
Time_OUT_PWM_GPIO_Config();
Time_OUT_PWM_Config(); //定时器配置
}

3、输出比较模式

#include"stm32f10x.h"
#include"time.h"

static Time_NVIC_Config(void)
{
NVIC_InitTypeDef NVIC_InitStructure;

NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0000);

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

NVIC_InitStructure.NVIC_IRQChannel = TIMx_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

NVIC_Init(&NVIC_InitStructure);
}

static void Time_OUT_PWM_GPIO_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;

RCC_APB2PeriphClockCmd(TIMx_OUT_GPIO_RCC,ENABLE);

GPIO_InitStructure.GPIO_Pin =TIMx_OUT_Pin;
GPIO_InitStructure.GPIO_Mode =GPIO_Mode_AF_PP; //复用推免式输出
GPIO_InitStructure.GPIO_Speed =GPIO_Speed_50MHz;

GPIO_Init(TIMx_OUT_Port, &GPIO_InitStructure);
}

static void Time_GPIO_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD,ENABLE);

GPIO_InitStructure.GPIO_Pin =GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode =GPIO_Mode_Out_PP; //通用推免式输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOD, &GPIO_InitStructure);
}

static void Time_OUT_PWM_Config(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIMx,ENABLE); //开启时钟
TIM_DeInit(TIM2);

TIM_TimeBaseInitStructure.TIM_Prescaler =(100-1); //时钟分频系数
TIM_TimeBaseInitStructure.TIM_Period =(1000-1); //自动重装寄存器 PWM频率:72M/100/1000=720Hz
TIM_TimeBaseInitStructure.TIM_CounterMode =TIM_CounterMode_Up; //向上计数模式
TIM_TimeBaseInitStructure.TIM_ClockDivision =0; //时钟分频,这里不涉及
#ifdef Time1
TIM_TimeBaseInitStructure.TIM_RepetitionCounter; //This parameter is valid only for TIM1 and TIM8
#endif

TIM_TimeBaseInit(TIMx,&TIM_TimeBaseInitStructure); //配置参数
TIM_ClearITPendingBit(TIMx,TIM_IT_Update); //清除中断标示位

TIM_OCInitStructure.TIM_OCMode =TIM_OCMode_Inactive; //ARR与CCRx相同时强制OCxREF为低
TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //输出使能通道1
#ifdef Time1
TIM_OCInitStructure.TIM_OutputNState =;
#endif
TIM_OCInitStructure.TIM_Pulse =CCR1_VAL;
TIM_OCInitStructure.TIM_OCPolarity =TIM_OCPolarity_High; //OCx=!OCxREF _High OCx=OCxREF
#ifdef Time1
TIM_OCInitStructure.TIM_OCNPolarity =;
TIM_OCInitStructure.TIM_OCIdleState =;
TIM_OCInitStructure.TIM_OCNIdleState =;
#endif

TIM_OC1Init(TIMx,&TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIMx,TIM_OCPreload_Enable); //使能CCR1预装载
TIM_ITConfig(TIMx,TIM_IT_CC1,ENABLE); //使能OC1比较中断

TIM_OCInitStructure.TIM_OCMode =TIM_OCMode_Active; //ARR与CCRx相同时强制OCxREF为高
TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //输出使能通道2
TIM_OCInitStructure.TIM_Pulse =CCR2_VAL;
TIM_OCInitStructure.TIM_OCPolarity =TIM_OCPolarity_Low; //OCx=!OCxREF _High OCx=OCxREF

TIM_OC2Init(TIMx,&TIM_OCInitStructure);
TIM_OC2PreloadConfig(TIMx,TIM_OCPreload_Enable);
TIM_ITConfig(TIMx,TIM_IT_CC2,ENABLE);

TIM_OCInitStructure.TIM_OCMode =TIM_OCMode_Timing; //ARR与CCRx比较结果对OCxREF无效
TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //输出使能通道3
TIM_OCInitStructure.TIM_Pulse =CCR3_VAL;
TIM_ITConfig(TIMx,TIM_IT_CC3,ENABLE);

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