STM32 低功耗 stop模式

关键代码：

1.

    RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);  
    PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI);  

2.

/**
  * @brief  Configures system clock after wake-up from STOP: enable HSE, PLL
  *         and select PLL as system clock source.
  * @param  None
  * @retval None
  */
static void SYSCLKConfig_STOP(void)
{  
  /* After wake-up from STOP reconfigure the system clock */
  /* Enable HSE */
  RCC_HSEConfig(RCC_HSE_ON);
 
  /* Wait till HSE is ready */
  while (RCC_GetFlagStatus(RCC_FLAG_HSERDY) == RESET)
  {}
 
  /* Enable PLL */
  RCC_PLLCmd(ENABLE);
 
  /* Wait till PLL is ready */
  while (RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
  {}
 
  /* Select PLL as system clock source */
  RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
 
  /* Wait till PLL is used as system clock source */
  while (RCC_GetSYSCLKSource() != 0x08)
  {}
}

交流邮箱：[email protected]

交流QQ：2795247843