//中断,检测到PA0脚的一个上升沿.
//中断线0线上的中断检测
void EXTI0_IRQHandler(void)
{
EXTI->PR=1<<0; //清除LINE10上的中断标志位
if(2==Check_WKUP())//待机?
{
StandbyMode();
}
}
int main(void) {
char msg[20];
HAL_Init();
Nucleo_BSP_Init();
/* Before we can access to every register of the PWR peripheral we must enable it */
__HAL_RCC_PWR_CLK_ENABLE();
while (1) {
if(__HAL_PWR_GET_FLAG(PWR_FLAG_SB)) {
/* If standby flag set in PWR->CSR, then the reset is generated from
* the exit of the standby mode */
sprintf(msg, "RESET after STANDBY mode\r\n");
HAL_UART_Transmit(&huart2, (uint8_t*)msg, strlen(msg), HAL_MAX_DELAY);
/* We have to explicitly clear the flag */
__HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU|PWR_FLAG_SB);
}
sprintf(msg, "MCU in run mode\r\n");
HAL_UART_Transmit(&huart2, (uint8_t*)msg, strlen(msg), HAL_MAX_DELAY);
while(HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_13) == GPIO_PIN_SET) {
HAL_GPIO_TogglePin(LD2_GPIO_Port, LD2_Pin);
HAL_Delay(100);
}
HAL_Delay(200);
sprintf(msg, "Entering in SLEEP mode\r\n");
HAL_UART_Transmit(&huart2, (uint8_t*)msg, strlen(msg), HAL_MAX_DELAY);
SleepMode();
sprintf(msg, "Exiting from SLEEP mode\r\n");
HAL_UART_Transmit(&huart2, (uint8_t*)msg, strlen(msg), HAL_MAX_DELAY);
while(HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_13) == GPIO_PIN_SET);
HAL_Delay(200);
sprintf(msg, "Entering in STOP mode\r\n");
HAL_UART_Transmit(&huart2, (uint8_t*)msg, strlen(msg), HAL_MAX_DELAY);
StopMode();
sprintf(msg, "Exiting from STOP mode\r\n");
HAL_UART_Transmit(&huart2, (uint8_t*)msg, strlen(msg), HAL_MAX_DELAY);
while(HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_13) == GPIO_PIN_SET);
HAL_Delay(200);
sprintf(msg, "Entering in STANDBY mode\r\n");
HAL_UART_Transmit(&huart2, (uint8_t*)msg, strlen(msg), HAL_MAX_DELAY);
StandbyMode();
while(1); //Never arrives here, since MCU is reset when exiting from STANDBY
}
}