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我从 C 和 STM 开始，但是.. 我正在使用 STM32L4476RG 和 CubeMx 并尝试通过 RTC 时钟进行中断，例如每天上午 10 点（在开始时闪烁 LED 或更改某些参数的值）。

我的代码不起作用，虽然它是由 CubeMx 生成的，但启用了中断支持，并且中断处的操作非常简单，因此不会有问题。

#include "main.h"
#include "stm32l4xx_hal.h"


#include "stdlib.h"

RTC_HandleTypeDef hrtc;

TIM_HandleTypeDef htim6;

static int mode_counter;
RTC_TimeTypeDef sTime;
RTC_DateTypeDef sDate;


void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_TIM6_Init(void);
static void MX_RTC_Init(void);

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim); //procedura przerwania od licznika
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin); //procedura przerwania od BlueButton
int Random_Number(int min, int max); //funkcja losujaca liczbe pseudolosowa z zakresu <min; max>
void HAT_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc); //RTC Alarm procedura


int main(void)
{


  HAL_Init();


  SystemClock_Config();

  MX_GPIO_Init();
  MX_TIM6_Init();
  MX_RTC_Init();

  /* USER CODE BEGIN 2 */
HAL_TIM_Base_Start_IT(&htim6); 

  while (1)
  {

    HAL_RTC_GetTime(&hrtc, &sTime, RTC_FORMAT_BIN);  
    HAL_RTC_GetDate(&hrtc, &sDate, RTC_FORMAT_BIN);
    HAL_Delay(1000);

  }


}


void SystemClock_Config(void)
{

  RCC_OscInitTypeDef RCC_OscInitStruct;
  RCC_ClkInitTypeDef RCC_ClkInitStruct;
  RCC_PeriphCLKInitTypeDef PeriphClkInit;

  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_LSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.HSICalibrationValue = 16;
  RCC_OscInitStruct.LSIState = RCC_LSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
  RCC_OscInitStruct.PLL.PLLN = 25;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV7;
  RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
  RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV4;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }


  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }

  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_RTC;
  PeriphClkInit.RTCClockSelection = RCC_RTCCLKSOURCE_LSI;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }


  if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }


  HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);


  HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

  HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}


static void MX_RTC_Init(void)
{
  RTC_AlarmTypeDef sAlarm;

  hrtc.Instance = RTC;
  hrtc.Init.HourFormat = RTC_HOURFORMAT_24;
  hrtc.Init.AsynchPrediv = 127;
  hrtc.Init.SynchPrediv = 255;
  hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
  hrtc.Init.OutPutRemap = RTC_OUTPUT_REMAP_NONE;
  hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
  hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
  if (HAL_RTC_Init(&hrtc) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }


  if(HAL_RTCEx_BKUPRead(&hrtc, RTC_BKP_DR0) != 0x32F2){
  sTime.Hours = 10;
  sTime.Minutes = 0;
  sTime.Seconds = 0;
  sTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
  sTime.StoreOperation = RTC_STOREOPERATION_RESET;
  if (HAL_RTC_SetTime(&hrtc, &sTime, RTC_FORMAT_BIN) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }

  sDate.WeekDay = RTC_WEEKDAY_MONDAY;
  sDate.Month = RTC_MONTH_JANUARY;
  sDate.Date = 1;
  sDate.Year = 19;

  if (HAL_RTC_SetDate(&hrtc, &sDate, RTC_FORMAT_BIN) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }

    HAL_RTCEx_BKUPWrite(&hrtc,RTC_BKP_DR0,0x32F2);
  }

  sAlarm.AlarmTime.Hours = 10;
  sAlarm.AlarmTime.Minutes = 0;
  sAlarm.AlarmTime.Seconds = 30;
  sAlarm.AlarmTime.SubSeconds = 0;
  sAlarm.AlarmTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
  sAlarm.AlarmTime.StoreOperation = RTC_STOREOPERATION_RESET;
  sAlarm.AlarmMask = RTC_ALARMMASK_DATEWEEKDAY;
  sAlarm.AlarmSubSecondMask = RTC_ALARMSUBSECONDMASK_ALL;
  sAlarm.AlarmDateWeekDaySel = RTC_ALARMDATEWEEKDAYSEL_WEEKDAY;
  sAlarm.AlarmDateWeekDay = 1;
  sAlarm.Alarm = RTC_ALARM_A;
  if (HAL_RTC_SetAlarm_IT(&hrtc, &sAlarm, RTC_FORMAT_BIN) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }

}


static void MX_TIM6_Init(void)
{

  TIM_MasterConfigTypeDef sMasterConfig;

  htim6.Instance = TIM6;
  htim6.Init.Prescaler = 2000;
  htim6.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim6.Init.Period = 49999;
  htim6.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
  if (HAL_TIM_Base_Init(&htim6) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }

  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim6, &sMasterConfig) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }

}

static void MX_GPIO_Init(void)
{

  GPIO_InitTypeDef GPIO_InitStruct;


  __HAL_RCC_GPIOC_CLK_ENABLE();
  __HAL_RCC_GPIOH_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();


  HAL_GPIO_WritePin(LED_GPIO_Port, LED_Pin, GPIO_PIN_RESET);


  HAL_GPIO_WritePin(GPIOC, GPIO_PIN_10, GPIO_PIN_RESET);

  GPIO_InitStruct.Pin = BlueButton_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(BlueButton_GPIO_Port, &GPIO_InitStruct);


  GPIO_InitStruct.Pin = USART_TX_Pin|USART_RX_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
  GPIO_InitStruct.Alternate = GPIO_AF7_USART2;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);


  GPIO_InitStruct.Pin = LED_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(LED_GPIO_Port, &GPIO_InitStruct);


  GPIO_InitStruct.Pin = GPIO_PIN_10;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);


  HAL_NVIC_SetPriority(EXTI15_10_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(EXTI15_10_IRQn);

}


void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
 if(htim->Instance == TIM6) 
    { 
        int _temp=Random_Number(1, htim6.Init.Period/2);
        HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_10); //buzzer

        TIM6->ARR =(TIM6->ARR) +_temp;
    }
}
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
    if (GPIO_Pin == BlueButton_Pin)
        {
        if (HAL_GPIO_ReadPin(BlueButton_GPIO_Port, BlueButton_Pin)==GPIO_PIN_SET)
            {
            mode_counter=mode_counter+1;
                switch(mode_counter)
                {
                    case 1: TIM6->PSC = htim6.Init.Prescaler*2; 
                        break;
                    case 2: TIM6->PSC = htim6.Init.Prescaler*4;
                        break;
                    default: TIM6->PSC = htim6.Init.Prescaler; 
                                     mode_counter=0;
                        break;
                }
            }
        }
}

int Random_Number (int min, int max)
{
  int tmp;
  if (max>=min)
    {
  max-= min;
    }
else
 {
   tmp= min - max;
   min= max;
   max= tmp;
 }
return max ? (rand() % max + min) : min;
}

void HAT_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc) // przerwanie od alarmu rtc
{
    HAL_GPIO_WritePin(LED_GPIO_Port, LED_Pin, GPIO_PIN_SET);
    mode_counter=2;
}

void _Error_Handler(char * file, int line)
{

  while(1) 
  {
  }

}

#ifdef USE_FULL_ASSERT

void assert_failed(uint8_t* file, uint32_t line)
{


}

#endif
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1 回答 1

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我发现了错误。我在中断无效中打错字......谢谢。

于 2019-01-10T22:01:49.557 回答