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****/