互补死区刹车原理这里不详述
互补理解为相反的信号
死区简单理解为信号跳变的缓冲时间
刹车简单理解为暂停信号输出，既然是暂停意味着放开后会再次启动
代码分享
#include "AdvancedTim.h"
#include "sys.h"
#include "stm32f10x_tim.h"
//高级定时器IO口配置
void advancedTim_gpio_init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
// PIN8配置为PWM输出
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// PIN13配置为PWM互补输出
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
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);
// 输出比较通道刹车通道 GPIO 初始化
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
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);
// BKIN引脚默认先输出低电平
GPIO_ResetBits(GPIOB,GPIO_Pin_12);
}
//高级定时器模式配置
void advancedTim_mode_config(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1,ENABLE);
/*--------------------时基结构体初始化-------------------------*/
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_TimeBaseStructure.TIM_Period=7; //周期
TIM_TimeBaseStructure.TIM_Prescaler= 8; //预分频
TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1;//死区预分频
TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up;// 计数器计数模式，设置为向上计数
TIM_TimeBaseStructure.TIM_RepetitionCounter=0;// 重复计数器的值，没用到不用管
// 初始化定时器
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
/*--------------------输出比较结构体初始化-------------------*/
TIM_OCInitTypeDef TIM_OCInitStructure;
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 = 4;// 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;// 死区时电平极性配置
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset;//互补输出死区电平极性配置
TIM_OC1Init(TIM1, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);
/*-------------------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BDTR寄存器的描述
TIM_BDTRInitTypeDef TIM_BDTRInitStructure;
TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable;
TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_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:UTG[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);
// 使能计数器
TIM_Cmd(TIM1, ENABLE);
// 主输出使能，当使用的是通用定时器时，这句不需要
TIM_CtrlPWMOutputs(TIM1, ENABLE);
}
//高级定时器初始化配置
void advancedTim_init(void)
{
advancedTim_mode_config();
advancedTim_gpio_init();
}这里再分享两个公式
定时器周期=系统时钟/预分频*重装载值
死区时间寄存器设置的值=死区时间/（系统时钟/死区分频）取倒数，这里注意单位转换 1mhz=1us=10*1000ns
