NUCLEO-L053R8：低功耗待机模式standby/PA0唤醒（例程分享）

待机模式唤醒后等同复位

基于ST官方NUCLEO-L053R8开发板

用PA0引脚唤醒（用杜邦线接高电平唤醒）

代码下载：见附件

standby mode without RTC：0.29uA VDD=3.0V

/**
* @brief  Main program
* @param  None
* @retval None
, v) X; t: S3 R: H*/
int main(void)
, M/ ]* ~! d5 Q* Z+ o7 G' V{  
6 B  J* N( l$ O) Z3 T/ o' u- }  /* STM32L0xx HAL library initialization:
       - Configure the Flash prefetch, Flash preread and Buffer caches
! s$ Q( d) X+ R       - Systick timer is configured by default as source of time base, but user
( ?$ ]5 a; u; `* h' q             can eventually implement his proper time base source (a general purpose
             timer for example or other time source), keeping in mind that Time base
! p9 K6 D% ?* r             duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
             handled in milliseconds basis.
( L" W* F" ]* U  `1 X& L$ ], L& H       - Low Level Initialization
4 I% b* L/ _- t+ C* b! X6 r     */
  HAL_Init();
$ G5 h! l! ~5 W6 N
  /* Configure LED2 */
  BSP_LED_Init(LED2);
. a( r" w7 T3 h4 z
" c+ \% N+ p4 V' Q  /* Configure the system clock to 2 MHz */
  SystemClock_Config();

, E2 |3 N' s0 }
5 ^% l* J; L) P2 ~0 D  /* Check and handle if the system was resumed from Standby mode */
  if(__HAL_PWR_GET_FLAG(PWR_FLAG_SB) != RESET)
  {
8 e' j) O% f" t7 a8 w1 W  a: |    /* Clear Standby flag */
: j0 G, n1 ?' o# E. N    __HAL_PWR_CLEAR_FLAG(PWR_FLAG_SB);
3 t4 T  N8 {$ F0 H
! T0 i2 k2 p0 L! e; A& M% ^( f//如果是唤醒状态，则LED亮3秒
: A/ e/ s7 E" R* g; _HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, GPIO_PIN_SET);        //点亮LED,延时3S，再灭LED
HAL_Delay(3000);
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, GPIO_PIN_RESET);
  }
else;
  
/* Configure the system Power */
) r( R/ T& a! a$ e! E* x2 p  SystemPower_Config();
. L9 Q' e" i1 V5 X  
  /* Insert 1 seconds delay */
0 K4 B  {8 i6 D/ O) l# o6 S  HAL_Delay(1000);

3 ]8 x% q, s6 C8 Z    /*The Following Wakeup sequence is highly recommended prior to each Standby mode entry
  E1 X* s6 o3 f: g     mainly  when using more than one wakeup source this is to not miss any wakeup event.
       - Disable all used wakeup sources,
       - Clear all related wakeup flags,
       - Re-enable all used wakeup sources,
+ V0 q6 `: D& H- L9 b1 w! J7 h       - Enter the Standby mode.
     */
  /*Disable all used wakeup sources: Pin1(PA.0)*/
  HAL_PWR_DisableWakeUpPin(PWR_WAKEUP_PIN1);
# W" A3 a* d1 j9 j/ L" n0 p  
6 I: m  [( y# |* o% c( q4 K4 o  /*Clear all related wakeup flags*/
3 p9 G& s" T# @* C  __HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
  
) i" `: I7 ^- e+ S  /*Re-enable all used wakeup sources: Pin1(PA.0)*/
  HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN1);
  
  J5 `% ^) _& f  /*Enter the Standby mode*/
  HAL_PWR_EnterSTANDBYMode();
  
  while (1)
$ t* z3 m& M/ E  {
+ Q7 S/ b! Y" W' s  }
2 q/ R7 ~8 o7 `; p6 _. U}

. A* |4 W. M0 A

感谢分享，学习一下

) x8 I! Y$ k4 N- V) d- p( w谢楼上支持

1 g, L+ @, T/ @' X谢楼上支持

参考参考

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