第五十五章、CH32V103应用教程——TIM-互补输出和死区插入

#ifndef __TIM_H

#define __TIM_H



#include "ch32v10x_conf.h"



void TIM1_Dead_Time_Init( u16 arr, u16 psc, u16 ccp );



#endif

#include "tim.h"



/*******************************************************************************

* Function Name  : TIM1_Dead_Time_Init

* Description    : Initializes TIM1 complementary output and dead time.

* Input          : arr: the period value.

*                  psc: the prescaler value.

*                  ccp: the pulse value.

* Return         : None

*******************************************************************************/

void TIM1_Dead_Time_Init( u16 arr, u16 psc, u16 ccp )

{

    GPIO_InitTypeDef GPIO_InitStructure;

    TIM_OCInitTypeDef TIM_OCInitStructure;

    TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;

    TIM_BDTRInitTypeDef TIM_BDTRInitStructure;



    RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA  | RCC_APB2Periph_GPIOB | RCC_APB2Periph_TIM1, ENABLE );



    //GPIO初始化配置

    /* TIM1_CH1 */

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;

    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;   //复用推挽输出

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

    GPIO_Init( GPIOA, &GPIO_InitStructure );



    /* TIM1_CH1N */

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;

    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

    GPIO_Init( GPIOB, &GPIO_InitStructure );



    /* TIM1_BKIN */

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;

    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

    GPIO_Init( GPIOB, &GPIO_InitStructure );



    //时基结构体初始化配置

    TIM_TimeBaseInitStructure.TIM_Period = arr;  //设置重装载值

    TIM_TimeBaseInitStructure.TIM_Prescaler = psc;  //设置预分频器

    TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;  //设置分频因子

    TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;  //设置向上计数模式

    TIM_TimeBaseInit( TIM1, &TIM_TimeBaseInitStructure);  //初始化定时器



    //输出比较结构体初始化

    TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;  //配置为PWM模式1

    TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;  //输出使能

    TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;  //互补输出使能

    TIM_OCInitStructure.TIM_Pulse = ccp;  //设置占空比大小

    TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;  //输出通道电平极性配置

    TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;  //互补输出通道电平极性配置

    TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;  //输出通道空闲电平极性配置

    TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset;  //互补输出通道空闲电平极性配置

    TIM_OC1Init( TIM1, &TIM_OCInitStructure );  //初始化



    //刹车和死区结构体初始化，有关刹车和死区结构体的成员具体可参考刹车和死区寄存器（TIMx_BDTR）的描述

    TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable;

    TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable;

    TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_1;

    //输出比较信号死区时间配置，具体如何计算可参考 BDTR:DTG[7:0]的描述

    //这里配置的死区时间为152ns

    TIM_BDTRInitStructure.TIM_DeadTime = 11;

    TIM_BDTRInitStructure.TIM_Break = TIM_Break_Enable;

    //当BKIN引脚检测到高电平的时候，输出比较信号被禁止，就好像是刹车一样

    TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_High;

    TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable;

    TIM_BDTRConfig( TIM1, &TIM_BDTRInitStructure );



    TIM_CtrlPWMOutputs(TIM1, ENABLE );  //开启定时器PWM输出

    TIM_OC1PreloadConfig( TIM1, TIM_OCPreload_Enable );

//    TIM_ARRPreloadConfig( TIM1, ENABLE );

    TIM_Cmd( TIM1, ENABLE );  //使能定时器

}

int main(void)

{

    USART_Printf_Init(115200);

    printf("SystemClk:%d\r\n",SystemCoreClock);



    /* Complementary output with dead-time insertion */

//    TIM1_Dead_Time_Init( 9, 8, 5 );



    /* Dead-time waveforms with delay greater than the negative pulse */

//    TIM1_Dead_Time_Init( 9, 8, 3 );



    /* Dead-time waveforms with delay greater than the positive pulse. */

    TIM1_Dead_Time_Init( 9, 48, 8 );



    while(1);

}