关于STM32F334的HRTIM产生PWM的配置问题

goodgft 提问时间：2018-12-24 16:08 /

问答
是否解决:

10ST金币

帮忙分析下334配置问题：

，2相交错BUCK，由CHA1和CHA2输出相位相差180度的PWM。
TA1输出：MASTER周期下置位，MASTER_CMP1下复位；
TA2输出：TIMER_A周期下置位，TIMER_A_CMP1下复位；
其中MASTER_CMP2下触发TIMER_A（MASTER_CMP2=Period/2），
逻辑如图：

问题：PWM占空比恰好在50%附近的时候，TA2输出的占空比不稳定，瞬间发生突变，忽大忽小，TA1的输出一直正常，规律是，master_CMP2触发timer_a，把master_CMP2设置到多少，TA2输出的PWM在其对应的占空比附近就会发生突变

怀疑是MASTER_CMP2下触发TIMER_A的这部分配置问题，导致TIMER_A计数出现BUG，但是一直没有找到问题在哪里，帮忙指点一下，不胜感激！

以下是：程序配置部分
/************************************************************************************************************************
* 模块名称 : 高分辨率定时器模块
* 文件名称 : bsp_hrtim.c
*       说明 : 高分辨率定时器HRTIM1产生2路PWM输出
* 硬件连接：PA8 - HRTIM1_CHA1
*          PA9 - HRTIM1_CHA2
*
*       Copyright (C), 2015-2100，Tommy Guo
************************************************************************************************************************/
#include "bsp.h"
#include "param.h"
#include "bms.h"
/*=====================================================================================================================*/
uint32_t  BUCK_PWM_PERIOD;       /* PWM时钟计数周期值 */
/*=====================================================================================================================*/

/************************************************************************************************************************
* 函数名：bsp_InitHRTIM
* 描  述：HRTIM1初始化
* 输  入: pwm_period - PWM时钟计数周期值（PWM分辨率）
* 输  出：无
* 调  用：内部调用
************************************************************************************************************************/
void bsp_InitHRTIM(uint32_t pwm_period)
{
      GPIO_InitTypeDef                                              GPIO_InitStructure;
      HRTIM_BaseInitTypeDef                      HRTIM_BaseInitStructure;
  HRTIM_TimerCfgTypeDef                      HRTIM_TimerWaveStructure;
  HRTIM_TimerInitTypeDef                      HRTIM_TimerInitStructure;
  HRTIM_OutputCfgTypeDef                      HRTIM_OutputStructure;
  HRTIM_CompareCfgTypeDef                HRTIM_CompareStructure;
  HRTIM_ADCTriggerCfgTypeDef       HRTIM_ADCTrigStructure;
      NVIC_InitTypeDef                                              NVIC_InitStructure;

  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA,ENABLE);
  GPIO_InitStructure.GPIO_Pin       = GPIO_Pin_8 | GPIO_Pin_9;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_3;
  GPIO_InitStructure.GPIO_Mode       = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd       = GPIO_PuPd_NOPULL;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
  GPIO_PinAFConfig(GPIOA,GPIO_PinSource8,GPIO_AF_13);
      GPIO_PinAFConfig(GPIOA,GPIO_PinSource9,GPIO_AF_13);

  /* HRTIM全局初始化 */
  RCC_HRTIM1CLKConfig(RCC_HRTIM1CLK_PLLCLK);
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_HRTIM1,ENABLE);
  HRTIM_DLLCalibrationStart(HRTIM1,HRTIM_CALIBRATIONRATE_14);
      HRTIM1_COMMON->DLLCR |= HRTIM_DLLCR_CALEN;
  while(HRTIM_GetCommonFlagStatus(HRTIM1,HRTIM_ISR_DLLRDY) == RESET);

  /* MASTER定时器工作模式和PWM频率配置 */
      HRTIM_BaseInitStructure.Period                                              = (uint32_t)(1152e6 / pwm_period);
      HRTIM_BaseInitStructure.RepetitionCounter = 0;                                                                                                                                                             /* n+1个PWM周期发生1次中断 */
      HRTIM_BaseInitStructure.PrescalerRatio                = HRTIM_PRESCALERRATIO_MUL8;                                                             /* 8倍频到1152MHz */
      HRTIM_BaseInitStructure.Mode                                                       = HRTIM_MODE_CONTINOUS;
      HRTIM_TimerInitStructure.HalfModeEnable = HRTIM_HALFMODE_DISABLED;
      HRTIM_TimerInitStructure.StartOnSync    = HRTIM_SYNCSTART_DISABLED;
      HRTIM_TimerInitStructure.ResetOnSync    = HRTIM_SYNCRESET_DISABLED;
      HRTIM_TimerInitStructure.DACSynchro    = HRTIM_DACSYNC_NONE;
      HRTIM_TimerInitStructure.PreloadEnable = HRTIM_PRELOAD_ENABLED;                                                                               /* 预加载使能 */
      HRTIM_TimerInitStructure.UpdateGating    = HRTIM_UPDATEGATING_INDEPENDENT;
      HRTIM_TimerInitStructure.BurstMode       = HRTIM_TIMERBURSTMODE_MAINTAINCLOCK;
      HRTIM_TimerInitStructure.RepetitionUpdate = HRTIM_UPDATEONREPETITION_ENABLED;                                     /* 使能 */
      HRTIM_Waveform_Init(HRTIM1,HRTIM_TIMERINDEX_MASTER,&HRTIM_BaseInitStructure,&HRTIM_TimerInitStructure);

      /* TIMER_A定时器工作模式和PWM频率配置 */
      HRTIM_BaseInitStructure.Period                                              = (uint32_t)(1152e6 / pwm_period);
      HRTIM_BaseInitStructure.RepetitionCounter = 0;                                                                                                                                                             /* n+1个PWM周期发生1次中断 */
      HRTIM_BaseInitStructure.PrescalerRatio                = HRTIM_PRESCALERRATIO_MUL8;                                                             /* 8倍频到1152MHz */
      HRTIM_BaseInitStructure.Mode             = HRTIM_MODE_SINGLESHOT;
      HRTIM_TimerInitStructure.RepetitionUpdate = HRTIM_UPDATEONREPETITION_DISABLED;                               /* 禁止 */
      HRTIM_Waveform_Init(HRTIM1,HRTIM_TIMERINDEX_TIMER_A,&HRTIM_BaseInitStructure,&HRTIM_TimerInitStructure);

      /* TIMER_A定时器输出及寄存器更新配置 */
      HRTIM_TimerWaveStructure.DeadTimeInsertion    = HRTIM_TIMDEADTIMEINSERTION_DISABLED;       /* CH1和CH2信号独立*/
      HRTIM_TimerWaveStructure.DelayedProtectionMode = HRTIM_TIMDELAYEDPROTECTION_DISABLED;       /* 延时保护：无 */
      HRTIM_TimerWaveStructure.FaultEnable          = HRTIM_TIMFAULTENABLE_NONE;                                              /* 故障位：可读写 */
      HRTIM_TimerWaveStructure.FaultLock          = HRTIM_TIMFAULTLOCK_READONLY;
      HRTIM_TimerWaveStructure.PushPull             = HRTIM_TIMPUSHPULLMODE_DISABLED;
      //指定触发定时器复位的源
      HRTIM_TimerWaveStructure.ResetTrigger       = HRTIM_TIMRESETTRIGGER_MASTER_CMP2;       /* MASTER_CMP2下触发TIMER_A */
      //指定定时器计数器复位时是否触发寄存器更新
      HRTIM_TimerWaveStructure.ResetUpdate          = HRTIM_TIMUPDATEONRESET_DISABLED;//DISABLED
      //指定触发定时器的寄存器更新的源
      HRTIM_TimerWaveStructure.UpdateTrigger       = HRTIM_TIMUPDATETRIGGER_MASTER;                               /* MASTER更新TIMER_A */
      HRTIM_WaveformTimerConfig(HRTIM1,HRTIM_TIMERINDEX_TIMER_A,&HRTIM_TimerWaveStructure);

  /* TA1输出配置 */
      HRTIM_OutputStructure.Polarity             = HRTIM_OUTPUTPOLARITY_HIGH;                                                       /* 极性控制，正极性 */
      HRTIM_OutputStructure.SetSource          = HRTIM_OUTPUTSET_MASTERPER;                                                       /* MASTER周期下置位 */
      HRTIM_OutputStructure.ResetSource          = HRTIM_OUTPUTRESET_MASTERCMP1;                                              /* MASTER_CMP1下复位 */
      HRTIM_OutputStructure.IdleMode             = HRTIM_OUTPUTIDLEMODE_IDLE;                                                       /* 输出不受空闲状态影响 */
      HRTIM_OutputStructure.IdleState          = HRTIM_OUTPUTIDLESTATE_INACTIVE;
      HRTIM_OutputStructure.FaultState          = HRTIM_OUTPUTFAULTSTATE_NONE;                                              /* 输出不受故障影响 */
      HRTIM_OutputStructure.ChopperModeEnable    = HRTIM_OUTPUTCHOPPERMODE_DISABLED;                               /* 不使用斩波器 */
      HRTIM_OutputStructure.BurstModeEntryDelayed = HRTIM_OUTPUTBURSTMODEENTRY_REGULAR;                      /* 死区时间不插入空闲状态 */
      HRTIM_WaveformOutputConfig(HRTIM1,HRTIM_TIMERINDEX_TIMER_A,HRTIM_OUTPUT_TA1,&HRTIM_OutputStructure);

      /* TA2输出配置 */
      HRTIM_OutputStructure.Polarity             = HRTIM_OUTPUTPOLARITY_HIGH;                                                       /* 极性控制，正极性 */
      HRTIM_OutputStructure.SetSource          = HRTIM_OUTPUTSET_TIMPER;                                                                      /* TIMER_A周期下置位 */
      HRTIM_OutputStructure.ResetSource          = HRTIM_OUTPUTRESET_TIMCMP1;                                                       /* TIMER_A_CMP1下复位 */
      HRTIM_OutputStructure.IdleMode             = HRTIM_OUTPUTIDLEMODE_IDLE;                                                       /* 输出不受空闲状态影响 */
      HRTIM_OutputStructure.IdleState          = HRTIM_OUTPUTIDLESTATE_INACTIVE;
      HRTIM_OutputStructure.FaultState          = HRTIM_OUTPUTFAULTSTATE_NONE;                                              /* 输出不受故障影响 */
      HRTIM_OutputStructure.ChopperModeEnable    = HRTIM_OUTPUTCHOPPERMODE_DISABLED;                               /* 不使用斩波器 */
      HRTIM_OutputStructure.BurstModeEntryDelayed = HRTIM_OUTPUTBURSTMODEENTRY_REGULAR;                      /* 死区时间不插入空闲状态 */
      HRTIM_WaveformOutputConfig(HRTIM1,HRTIM_TIMERINDEX_TIMER_A,HRTIM_OUTPUT_TA2,&HRTIM_OutputStructure);

      /* MASTER_CMP1、MASTER_CMP2赋初值 */
      HRTIM_MasterSetCompare(HRTIM1,HRTIM_COMPAREUNIT_1,HRTIM_BaseInitStructure.Period*0.05);
      HRTIM_MasterSetCompare(HRTIM1,HRTIM_COMPAREUNIT_2,HRTIM_BaseInitStructure.Period*0.50);

      /* TIMER_A_CMP1赋初值 */
      HRTIM_CompareStructure.AutoDelayedMode = HRTIM_AUTODELAYEDMODE_REGULAR;
      HRTIM_CompareStructure.AutoDelayedTimeout = 0;
      HRTIM_CompareStructure.CompareValue    = HRTIM_BaseInitStructure.Period*0.05;
      HRTIM_WaveformCompareConfig(HRTIM1,HRTIM_TIMERINDEX_TIMER_A,HRTIM_COMPAREUNIT_1,&HRTIM_CompareStructure);

  /* ADC触发初始化 */
  HRTIM_CompareStructure.AutoDelayedMode = HRTIM_AUTODELAYEDMODE_REGULAR;
  HRTIM_CompareStructure.AutoDelayedTimeout = 0;
  HRTIM_CompareStructure.CompareValue    = HRTIM_BaseInitStructure.Period*0.50;                      /* TIMER_A_CMP2初值 */
  HRTIM_WaveformCompareConfig(HRTIM1,HRTIM_TIMERINDEX_TIMER_A, HRTIM_COMPAREUNIT_2,&HRTIM_CompareStructure);
  HRTIM_ADCTrigStructure.Trigger          = HRTIM_ADCTRIGGEREVENT13_TIMERA_CMP2;
  HRTIM_ADCTrigStructure.UpdateSource    = HRTIM_ADCTRIGGERUPDATE_TIMER_A;
  HRTIM_ADCTriggerConfig(HRTIM1,HRTIM_ADCTRIGGER_1,&HRTIM_ADCTrigStructure);

  /* HRTIM1_TIMA中断初始化 */
  NVIC_InitStructure.NVIC_IRQChannel                                                                         = HRTIM1_TIMA_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority                         = 0;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd                                                       = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
  HRTIM_ITConfig(HRTIM1,HRTIM_TIMERINDEX_TIMER_A,HRTIM_TIM_IT_REP,ENABLE);

  HRTIM_WaveformCounterStart(HRTIM1,HRTIM_TIMERID_TIMER_A);                                                                                                                      /* 启动TIMER_A */
      HRTIM_WaveformCounterStart(HRTIM1,HRTIM_TIMERID_MASTER);                                                                                                                      /* 启动MASTER */

      BUCK_PWM_PERIOD = HRTIM_BaseInitStructure.Period;
      HRTIM_OutputStop();
}
/*=====================================================================================================================*/

/************************************************************************************************************************
* 函数名：HRTIM_OutputStop
* 描  述：停止输出PWM
* 输  入: 无
* 输  出：无
* 调  用：外部调用
************************************************************************************************************************/
void HRTIM_OutputStop(void)
{
      HRTIM_WaveformOutputStop(HRTIM1,HRTIM_OUTPUT_TA1);       /* 停止TA1输出PWM */
      HRTIM_WaveformOutputStop(HRTIM1,HRTIM_OUTPUT_TA2);       /* 停止TA2输出PWM */
}
/*=====================================================================================================================*/

/************************************************************************************************************************
* 函数名：HRTIM_OutputStart
* 描  述：启动输出PWM
* 输  入: 无
* 输  出：无
* 调  用：外部调用
************************************************************************************************************************/
void HRTIM_OutputStart(void)
{
      HRTIM_WaveformOutputStart(HRTIM1,HRTIM_OUTPUT_TA1); /* 启动TA1输出PWM */
      HRTIM_WaveformOutputStart(HRTIM1,HRTIM_OUTPUT_TA2); /* 启动TA2输出PWM */
}
/*=====================================================================================================================*/

/************************************************************************************************************************
* 函数名：PWM_Update
* 描  述：PWM占空比更新
* 输  入: CompareValue->占空比
* 输  出：无
* 调  用：内部调用
************************************************************************************************************************/
void PWM_Update(uint32_t CompareValue)
{
      /* 更新MASTER_CMP1，TA1输出 */
      HRTIM_MasterSetCompare(HRTIM1,HRTIM_COMPAREUNIT_1,CompareValue);
      /* 更新TIMA_CMP1，TA2输出 */
      HRTIM_SlaveSetCompare(HRTIM1,HRTIM_TIMERINDEX_TIMER_A,HRTIM_COMPAREUNIT_1,CompareValue);
      /* 更新TIMA_CMP2，在TA2的PWM中点触发ADC */
      HRTIM_SlaveSetCompare(HRTIM1,HRTIM_TIMERINDEX_TIMER_A,HRTIM_COMPAREUNIT_2,CompareValue*0.5);
}
/*=====================================================================================================================*/

/************************************************************************************************************************
* 函数名：bsp_InitPWM
* 描  述：初始化PEM，包含MPPT初始参数、PID初始参数
* 输  入: 无
* 输  出：无
* 调  用：外部调用
************************************************************************************************************************/
void bsp_InitPWM(void)
{
      bsp_InitHRTIM(PWM_FREQUENCY);       /* PWM开关频率 */
      MPPT_PNO_Init(&PNO);                                     /* 扰动法MPPT参数初始化 */
      MPPT_INCC_Init(&INCC);                   /* 增量电导法MPPT参数初始化 */
      PID_Init();                                                                               /* PID参数初始化 */
}
/*=====================================================================================================================*/

/************************************************************************************************************************
* 函数名：HRTIM1_TIMA_IRQHandler
* 描  述：HRTIM1_TIMA中断服务程序，50us
* 输  入: 无
* 输  出：无
* 调  用：无
************************************************************************************************************************/
void HRTIM1_TIMA_IRQHandler(void)
{
      if (HRTIM_GetITStatus(HRTIM1,HRTIM_TIMERINDEX_TIMER_A,HRTIM_TIM_FLAG_REP) != RESET)
      {
            BUCK_Scan();                                                             /* 运行BUCK */
            HRTIM_ClearITPendingBit(HRTIM1, HRTIM_TIMERINDEX_TIMER_A, HRTIM_TIM_FLAG_REP);
      }
}
/*=====================================================END OF FILE=====================================================*/