高级定时器1，pwm互补输出

只看该作者 · 2023-11-12 20:55

哪位大神帮我看看下面的初始化代码有哪些问题，pwm带死区的互补输出，用到了PC3和PC4但，但现在这两个一直没有波形输出


GPIO_InitTypeDef GPIO_InitStructure;
/* C1输出比较通道 GPIO 初始化*/
RCC_AHBPeriphClockCmd(ADVANCE_TIM_CH1_GPIO_CLK, ENABLE);
  GPIO_InitStructure.GPIO_Pin =  ADVANCE_TIM_CH1_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_1;
  GPIO_Init(ADVANCE_TIM_CH1_PORT, &GPIO_InitStructure);

  /* C1输出比较通道互补通道 GPIO 初始化*/
RCC_AHBPeriphClockCmd(ADVANCE_TIM_CH1N_GPIO_CLK, ENABLE);
  GPIO_InitStructure.GPIO_Pin =  ADVANCE_TIM_CH1N_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_1;
  GPIO_Init(ADVANCE_TIM_CH1N_PORT, &GPIO_InitStructure);

/* C2输出比较通道 GPIO 初始化*/
RCC_AHBPeriphClockCmd(ADVANCE_TIM_CH1_GPIO_CLK, ENABLE);
  GPIO_InitStructure.GPIO_Pin =  ADVANCE_TIM_CH2_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_1;
  GPIO_Init(ADVANCE_TIM_CH1_PORT, &GPIO_InitStructure);

  /* C2输出比较通道互补通道 GPIO 初始化*/
RCC_AHBPeriphClockCmd(ADVANCE_TIM_CH1N_GPIO_CLK, ENABLE);
  GPIO_InitStructure.GPIO_Pin =  ADVANCE_TIM_CH2N_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_1;
  GPIO_Init(ADVANCE_TIM_CH1N_PORT, &GPIO_InitStructure);
  /* 输出比较通道刹车通道 GPIO 初始化*/
//RCC_AHBPeriphClockCmd(ADVANCE_TIM_BKIN_GPIO_CLK, ENABLE);
  //GPIO_InitStructure.GPIO_Pin =  ADVANCE_TIM_BKIN_PIN;
  //GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  //GPIO_Init(ADVANCE_TIM_BKIN_PORT, &GPIO_InitStructure);
/* BKIN引脚默认先输出低电平*/

GPIO_PinAFConfig(GPIOC,GPIO_PinSource3,GPIO_AF_3);
GPIO_PinAFConfig(GPIOC,GPIO_PinSource4,GPIO_AF_3);
GPIO_PinAFConfig(GPIOC,GPIO_PinSource7,GPIO_AF_3);
GPIO_PinAFConfig(GPIOC,GPIO_PinSource6,GPIO_AF_3);

GPIO_IOMUX_PinAFConfig(GPIOC, GPIO_PinSource3, GPIOMUX_AF3_TIM1CH1N);
GPIO_IOMUX_PinAFConfig(GPIOC, GPIO_PinSource4, GPIOMUX_AF3_TIM1CH2N);
   /* 开启定时器时钟,即内部时钟CK_INT=8M*/
ADVANCE_TIM_APBxClock_FUN(ADVANCE_TIM_CLK,ENABLE);

/*--------------------时基结构体初始化-------------------------*/
//TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
/* 自动重装载寄存器的值，累计TIM_Period+1个频率后产生一个更新或者中断*/
TIM_TimeBaseStructure.TIM_Period=ADVANCE_TIM_PERIOD;
/* 驱动CNT计数器的时钟 = Fck_int/(psc+1)*/
TIM_TimeBaseStructure.TIM_Prescaler= ADVANCE_TIM_PSC;
/* 时钟分频因子，配置死区时间时需要用到*/
TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1;
/* 计数器计数模式，设置为向上计数*/
TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up;
/* 重复计数器的值，没用到不用管*/
TIM_TimeBaseStructure.TIM_RepetitionCounter=0;
/* 初始化定时器*/
TIM_TimeBaseInit(ADVANCE_TIM, &TIM_TimeBaseStructure);

/*--------------------输出比较结构体初始化-------------------*/
TIM_OCInitTypeDef  TIM_OCInitStructure;
/* 配置为PWM模式1*/
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
/* 输出使能*/
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
/* 互补输出使能*/
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
/* 设置占空比大小*/
TIM_OCInitStructure.TIM_Pulse = ADVANCE_TIM_PULSE;
/* 输出通道电平极性配置*/
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
/* 互补输出通道电平极性配置*/
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low;////////////////////////////////
/* 输出通道空闲电平极性配置*/
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
/* 互补输出通道空闲电平极性配置*/
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset;

TIM_OC1Init(ADVANCE_TIM, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(ADVANCE_TIM, TIM_OCPreload_Enable);
TIM_OC2Init(ADVANCE_TIM, &TIM_OCInitStructure);
TIM_OC2PreloadConfig(ADVANCE_TIM, 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_Disable;
/* 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(ADVANCE_TIM, &TIM_BDTRInitStructure);

/* 使能计数器*/
TIM_Cmd(ADVANCE_TIM, ENABLE);
/* 主输出使能，当使用的是通用定时器时，这句不需要*/
TIM_CtrlPWMOutputs(ADVANCE_TIM, ENABLE);

高级定时器1，pwm互补输出

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