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

/**
5 B( K" F$ w$ p4 K! Q' U+ o- e1 G* @brief  Main program
* @param  None
* @retval None
*/
* G- d  N. F9 R- U: Y$ ^9 T7 T2 y: H% hint main(void)
# R4 H1 u! x' g# m{  
0 q& _+ R  p# P- n" u. ]4 I( ?% C6 w* l  /* STM32L0xx HAL library initialization:
       - Configure the Flash prefetch, Flash preread and Buffer caches
$ E9 {4 _3 k) s! }: |: e       - Systick timer is configured by default as source of time base, but user
' e  |: h6 A7 ?1 h* x7 t             can eventually implement his proper time base source (a general purpose
             timer for example or other time source), keeping in mind that Time base
5 l- \( n% E# S: ?; z5 Z             duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
4 [9 l7 l" J3 {- a. T# I             handled in milliseconds basis.
       - Low Level Initialization
     */
; k8 x+ s* f" T6 v* @1 r  HAL_Init();

  `" s, y* {8 o: [9 r3 f  /* Configure LED2 */
  BSP_LED_Init(LED2);

  /* Configure the system clock to 2 MHz */
  SystemClock_Config();
& k, G6 }& P/ h
4 y9 |! u2 A/ l$ [
  /* Check and handle if the system was resumed from Standby mode */
  if(__HAL_PWR_GET_FLAG(PWR_FLAG_SB) != RESET)
  {
) M9 ], r# y  O% T* {% f    /* Clear Standby flag */
    __HAL_PWR_CLEAR_FLAG(PWR_FLAG_SB);

5 D* o  I% F1 c) Z//如果是唤醒状态，则LED亮3秒
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;
: C7 u6 e/ d$ O" I  
/* Configure the system Power */
4 S6 \# j: g# j3 Z6 L7 V  SystemPower_Config();
6 ^! h6 R8 e$ u  
3 n# d; R! W: [( R# e, p5 O+ T  /* Insert 1 seconds delay */
  HAL_Delay(1000);
: S. Q& g0 t, z& V$ [
    /*The Following Wakeup sequence is highly recommended prior to each Standby mode entry
     mainly  when using more than one wakeup source this is to not miss any wakeup event.
4 H; @- e; ^, Q9 V       - Disable all used wakeup sources,
       - Clear all related wakeup flags,
2 n; s5 T1 b3 d3 Z3 W       - Re-enable all used wakeup sources,
6 w# u1 }+ ^/ e* T- m2 t% g( D       - Enter the Standby mode.
1 r+ X+ y3 h8 |: u( N     */
  /*Disable all used wakeup sources: Pin1(PA.0)*/
  HAL_PWR_DisableWakeUpPin(PWR_WAKEUP_PIN1);
  
' Y  T# V) }' e& n; L! C# `/ A- h  /*Clear all related wakeup flags*/
( y5 V% V7 A9 m% h, k/ M: G2 B  __HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
  
1 x4 ^8 u- z+ m# E  Y% H) {  /*Re-enable all used wakeup sources: Pin1(PA.0)*/
  HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN1);
  
$ f( c+ H* N3 U) \* t$ i% n: |# |  /*Enter the Standby mode*/
  HAL_PWR_EnterSTANDBYMode();
  
5 J, V+ T( v0 B" j, i  while (1)
  {
  }
9 h9 j( M; B; ]2 c}
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参考参考

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2 v! Q" i0 Y6 Y/ g3 b0 p0 l. x  Z) b8 H学习学习

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