定时器3和5主从模式输出PWM，定时器5开中断程序就死机

发布于 2019-06-25 10:21:59 浏览：2238 订阅该版

void MX_TIM3_Init(void)
{
//  TIM_ClockConfigTypeDef sClockSourceConfig;
  TIM_MasterConfigTypeDef sMasterConfig = {0};
  TIM_OC_InitTypeDef          sConfigOC = {0};

GPIO_InitTypeDef GPIO_InitStruct;

__HAL_RCC_TIM3_CLK_ENABLE();
    __HAL_RCC_GPIOB_CLK_ENABLE();

shtim3.Instance = TIM3;                                //设置主定时器为TIM3
  shtim3.Init.Prescaler = 720-1;                           //设置PWM频率
  shtim3.Init.CounterMode = TIM_COUNTERMODE_UP;          //设置计数模式为向上计数
  shtim3.Init.Period = 5000-1;                            //设置占空比
  shtim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;    //设置为无分频
  HAL_TIM_PWM_Init(&shtim3);

/**TIM3 GPIO Configuration    
  PB5     ------> TIM3_CH2 
  */
  GPIO_InitStruct.Pin = GPIO_PIN_5;
  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;              //更新事件被选为触发输入
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_ENABLE;       //开启主从模式
  HAL_TIMEx_MasterConfigSynchronization(&shtim3, &sMasterConfig);

sConfigOC.OCMode = TIM_OCMODE_PWM1;            //设置PWM模式为PWM1
  sConfigOC.Pulse = 2500;                          //设置PWM占空比为50%（50/100）
  sConfigOC.OCPolarity = TIM_OCPOLARITY_LOW;     //设置PWM空闲状态引脚拉低
  HAL_TIM_PWM_ConfigChannel(&shtim3, &sConfigOC, TIM_CHANNEL_2);

__HAL_AFIO_REMAP_TIM3_PARTIAL();//部分重映射
  HAL_TIM_Base_Stop(&shtim3);

LOG_D("MX_TIM3_Init!  <br>");
}

void MX_TIM5_Init(void)
{
  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
  TIM_SlaveConfigTypeDef sSlaveConfig = {0};

__HAL_RCC_TIM5_CLK_ENABLE();

shtim5.Instance = TIM5;                                   //设置从定时器为TIM5
  shtim5.Init.Prescaler =0;                                 //设置从定时器频率为0
  shtim5.Init.CounterMode = TIM_COUNTERMODE_UP;             //设置计数模式为向上计数
  shtim5.Init.Period =0xffff;                               //这个大于0就行
  shtim5.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;       //设置为无分频    
  HAL_TIM_Base_Init(&shtim5);

sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;  //设置为内部时钟触发，即为TIM2
  HAL_TIM_ConfigClockSource(&shtim5, &sClockSourceConfig);

sSlaveConfig.SlaveMode =  TIM_SLAVEMODE_GATED;              //设置为门触发
  sSlaveConfig.InputTrigger = TIM_TS_ITR1;                    //设置ITR1(tim2)为输入源
  sSlaveConfig.TriggerPolarity = TIM_TRIGGERPOLARITY_RISING;  //设置触发模式为上升沿
  sSlaveConfig.TriggerPrescaler = TIM_TRIGGERPRESCALER_DIV1;  //设置无预分频 
  sSlaveConfig.TriggerFilter = 0x0;                           //设置无滤波

HAL_TIM_SlaveConfigSynchronization(&shtim5, &sSlaveConfig);

//关ITM5中断
  HAL_TIM_Base_Stop_IT(&shtim5);
  LOG_D("MX_TIM5_Init!  <br>");

HAL_NVIC_SetPriority(TIM5_IRQn,1,1);    //设置中断优先级，抢占优先级1，子优先级3
  HAL_NVIC_EnableIRQ(TIM5_IRQn); 
  LOG_D("MX_TIM5_Init111!  <br>");

}

void PWM_Set(uint32_t speed,uint32_t pulse)
{
  TIM_OC_InitTypeDef          sConfigOC = {0};

shtim3.Instance = TIM3;                                //设置主定时器为TIM3
  shtim3.Init.Prescaler = 720-1;                           //设置PWM频率
  shtim3.Init.CounterMode = TIM_COUNTERMODE_UP;          //设置计数模式为向上计数
  shtim3.Init.Period = 500000/speed - 1;                            //设置占空比
  shtim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;    //设置为无分频
  HAL_TIM_PWM_Init(&shtim3);

sConfigOC.OCMode = TIM_OCMODE_PWM1;            //设置PWM模式为PWM1
  sConfigOC.Pulse = 250000/speed;                          //设置PWM占空比为50%（50/100）
  sConfigOC.OCPolarity = TIM_OCPOLARITY_LOW;     //设置PWM空闲状态引脚拉低
  HAL_TIM_PWM_ConfigChannel(&shtim3, &sConfigOC, TIM_CHANNEL_2);

__HAL_TIM_SET_AUTORELOAD(&shtim5,pulse-1);

HAL_TIM_Base_Start_IT(&shtim5);                
  HAL_TIM_PWM_Start_IT(&shtim3, TIM_CHANNEL_2);        //主定时器PWM脉冲输出
  LOG_D("Step_Moto2_Set!  <br>");
}

调试发现，程序运行HAL_TIM_Base_Start_IT(&shtim5);      就死机

调试串口输出：
[46] D/NO_TAG: MX_TIM3_Init!

[49] D/NO_TAG: MX_TIM5_Init!

[52] D/NO_TAG: MX_TIM5_Init111!

thread pri  status      sp     stack size max used left tick  error
------ ---  ------- ---------- ----------  ------  ---------- ---
tshell  20  ready   0x00000040 0x00001000    01%   0x0000000a 000
tidle   31  ready   0x00000040 0x00000100    25%   0x00000020 000
main    10  ready   0x00000040 0x00000800    22%   0x00000005 000
死机