使用STM32CubeMX生成待机开关功能

使用的开发板为MINISTM32

通过长按数秒KEY_UP 按键开机，并且通过 DS1 的闪烁指示程序已经开始运行，再次长按该键，则进入待机模式，

DS1 关闭，程序停止运行。利用STM32的standby模式来实行类似于手机的开关机。

刚下载完时候是处于standby模式。

代码修改如下：

/**
  ******************************************************************************
  * File Name          : main.c
  * Description        : Main program body
  ******************************************************************************
  ** This notice applies to any and all portions of this file
  * that are not between comment pairs USER CODE BEGIN and
  * USER CODE END. Other portions of this file, whether
  * inserted by the user or by software development tools
  * are owned by their respective copyright owners.
  *
  * COPYRIGHT(c) 2017 STMicroelectronics
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions of source code must retain the above copyright notice,
  *      this list of conditions and the following disclaimer.
  *   2. Redistributions in binary form must reproduce the above copyright notice,
  *      this list of conditions and the following disclaimer in the documentation
  *      and/or other materials provided with the distribution.
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32f1xx_hal.h"

/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);

/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/

/* USER CODE END PFP */

/* USER CODE BEGIN 0 */

/**
  * @brief  This function configures the system to enter Standby mode for
  *         current consumption measurement purpose.
  *         STANDBY Mode
  *         ============
  *           - Backup SRAM and RTC OFF
  *           - IWDG and LSI OFF
  *           - Wakeup using WakeUp Pin (PA.00)
  * @param  None
  * @retval None
  */
void StandbyMode_Measure(void)
{  

      /* Enable Power Clock*/
    __HAL_RCC_PWR_CLK_ENABLE();

    /* Allow access to Backup */
    HAL_PWR_EnableBkUpAccess();

      /* Reset RTC Domain */
    __HAL_RCC_BACKUPRESET_FORCE();
    __HAL_RCC_BACKUPRESET_RELEASE();

    /* Disable all used wakeup sources: Pin1(PA.0) */
    HAL_PWR_DisableWakeUpPin(PWR_WAKEUP_PIN1);

    /* Clear all related wakeup flags */
    __HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);

    /* Re-enable all used wakeup sources: Pin1(PA.0) */
    HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN1);

    /*## Enter Standby Mode ####################################################*/
    /* Request to enter STANDBY mode  */
    HAL_PWR_EnterSTANDBYMode(); 

}

void Sys_Enter_Standby(void)
{
    //关闭所有外设(根据实际情况写)
    __HAL_RCC_APB2_FORCE_RESET();//
    //  __HAL_RCC_GPIOC_CLK_DISABLE();
    //__HAL_RCC_GPIOD_CLK_DISABLE();
    //__HAL_RCC_GPIOA_CLK_DISABLE();
    //__HAL_RCC_GPIOB_CLK_DISABLE();

    StandbyMode_Measure();//进入待机模式
}

uint8_t PWR_Check_Standby(void)
{
    uint8_t press_cnt =;//记录按下的次数
    uint8_t release_cnt =;//记录松开的次数

    HAL_GPIO_WritePin(DS0_GPIO_Port, DS0_Pin, GPIO_PIN_RESET);
    while()//死循环，由return结束
    {
        HAL_Delay();//延迟一段时间再检测

        if(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_0) == GPIO_PIN_SET)    //检测到按下按键
        {
            press_cnt++;//记录按下次数
            release_cnt=;//清除按键释放记录
            if(press_cnt>=)//按下时间足够
            {
                HAL_GPIO_WritePin(DS0_GPIO_Port, DS0_Pin, GPIO_PIN_SET);
                //printf("系统进入待机模式，按下WKUP可退出待机模式\n");
                return ;//检测到按键被时间长按下
            }
        }
        else
        {
            release_cnt++;//记录释放次数
            if(release_cnt>)//连续检测到释放超过5次
            {
                HAL_GPIO_WritePin(DS0_GPIO_Port, DS0_Pin, GPIO_PIN_RESET);
                return ;//按下时间太短，不是按键长按操作
            }
        }
    }

}

void WKUP_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStruct;

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOA_CLK_ENABLE();

  /*Configure GPIO pin : PA0 */
  GPIO_InitStruct.Pin = GPIO_PIN_0;
  GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    //检查是否是正常开机
    if(PWR_Check_Standby()==)
    {
        Sys_Enter_Standby();//不是开机，进入待机模式
    }

  /* EXTI interrupt init*/
  HAL_NVIC_SetPriority(EXTI0_IRQn, , );
  HAL_NVIC_EnableIRQ(EXTI0_IRQn);

}

/* USER CODE END 0 */

int main(void)
{

    /* USER CODE BEGIN 1 */

    /* USER CODE END 1 */

    /* MCU Configuration----------------------------------------------------------*/

    /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
    HAL_Init();

    /* USER CODE BEGIN Init */

    /* USER CODE END Init */

    /* Configure the system clock */
    SystemClock_Config();

    /* USER CODE BEGIN SysInit */

    /* USER CODE END SysInit */

    /* Initialize all configured peripherals */
    MX_GPIO_Init();

    /* USER CODE BEGIN 2 */
    WKUP_Init();
    /* USER CODE END 2 */

    /* Infinite loop */
    /* USER CODE BEGIN WHILE */
    while ()
    {
        /* USER CODE END WHILE */

        /* USER CODE BEGIN 3 */
        HAL_GPIO_TogglePin(DS1_GPIO_Port, DS1_Pin);
        HAL_Delay();
    }
    /* USER CODE END 3 */

}

/** System Clock Configuration
*/
void SystemClock_Config(void)
{

    RCC_OscInitTypeDef RCC_OscInitStruct;
    RCC_ClkInitTypeDef RCC_ClkInitStruct;

    /**Initializes the CPU, AHB and APB busses clocks
    */
    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
    RCC_OscInitStruct.HSEState = RCC_HSE_ON;
    RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
    RCC_OscInitStruct.HSIState = RCC_HSI_ON;
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
    RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
    RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
    {
        _Error_Handler(__FILE__, __LINE__);
    }

    /**Initializes the CPU, AHB and APB busses clocks
    */
    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_DIV2;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

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

    /**Configure the Systick interrupt time
    */
    HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/);

    /**Configure the Systick
    */
    HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

    /* SysTick_IRQn interrupt configuration */
    HAL_NVIC_SetPriority(SysTick_IRQn, , );
}

/** Configure pins as
        * Analog
        * Input
        * Output
        * EVENT_OUT
        * EXTI
*/
static void MX_GPIO_Init(void)
{

    GPIO_InitTypeDef GPIO_InitStruct;

    /* GPIO Ports Clock Enable */
    __HAL_RCC_GPIOC_CLK_ENABLE();
    __HAL_RCC_GPIOD_CLK_ENABLE();
    __HAL_RCC_GPIOA_CLK_ENABLE();

    /*Configure GPIO pin Output Level */
    HAL_GPIO_WritePin(DS0_GPIO_Port, DS0_Pin, GPIO_PIN_RESET);

    /*Configure GPIO pin Output Level */
    HAL_GPIO_WritePin(DS1_GPIO_Port, DS1_Pin, GPIO_PIN_RESET);

    /*Configure GPIO pin : DS0_Pin */
    GPIO_InitStruct.Pin = DS0_Pin;
    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    HAL_GPIO_Init(DS0_GPIO_Port, &GPIO_InitStruct);

    /*Configure GPIO pin : DS1_Pin */
    GPIO_InitStruct.Pin = DS1_Pin;
    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    HAL_GPIO_Init(DS1_GPIO_Port, &GPIO_InitStruct);

}

/* USER CODE BEGIN 4 */
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
    if(GPIO_Pin==GPIO_PIN_0)//PA0
    {
        if(PWR_Check_Standby())//关机
        {
            Sys_Enter_Standby();//进入待机模式
        }
    }
}

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @param  None
  * @retval None
  */
void _Error_Handler(char * file, int line)
{
    /* USER CODE BEGIN Error_Handler_Debug */
    /* User can add his own implementation to report the HAL error return state */
    while()
    {
    }
    /* USER CODE END Error_Handler_Debug */
}

#ifdef USE_FULL_ASSERT

/**
   * @brief Reports the name of the source file and the source line number
   * where the assert_param error has occurred.
   * @param file: pointer to the source file name
   * @param line: assert_param error line source number
   * @retval None
   */
void assert_failed(uint8_t* file, uint32_t line)
{
    /* USER CODE BEGIN 6 */
    /* User can add his own implementation to report the file name and line number,
      ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
    /* USER CODE END 6 */

}

#endif

/**
  * @}
  */

/**
  * @}
*/

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/