PM组件休眠低功耗

pm组件的相关疑问，休眠唤醒线程出现问题

发布于 2025-04-18 11:26:04 浏览：101 订阅该版

使用国民的n32l403芯片跑rtthread使用了pm组件管理功耗。
我需要进入stop2后定时唤醒喂mcu看门狗和i2c喂外部看门狗，于是使用了lptimer定时器定时唤醒喂狗，且用于tickless
目前发现有以下问题：
1.定时唤醒喂狗时发现其他线程还在跑
2.通过按键唤醒后，发现有的线程调度异常导致程序乱跑
以下是部分代码
```
void pm_bsp_enter_deepsleep(struct rt_pm *pm)
{
   // WatchdogDeivce = rt_device_find("wdt");
   // rt_device_control(WatchdogDeivce, RT_DEVICE_CTRL_WDT_KEEPALIVE, NULL);
   if(sleep_wakeup_flag != case_in_deepsleep_mode)
   {
      wakeup_to_deepsleep_mode_operation();
      rt_kprintf("pm_bsp_enter_deepsleep rt_tick_get = %d\r\n",rt_tick_get());
   }

// rt_thread_delay(100);
   // SysTick->CTRL&=~SysTick_CTRL_ENABLE_Msk;

PWR_EnterSTOP2Mode(PWR_STOPENTRY_WFI,PWR_CTRL3_RAM1RET|PWR_CTRL3_RAM2RET);

SetSysClockToPLL(SystemCoreClock,SYSCLK_PLLSRC_HSE_PLLDIV2);

charger_feed_sy8809_watchdog();

WatchdogDeivce = rt_device_find("wdt");

rt_device_control(WatchdogDeivce, RT_DEVICE_CTRL_WDT_KEEPALIVE, NULL);
   
   // if(sleep_wakeup_flag == case_in_wakeup_mode)
   // {
   //    deepsleep_to_wakeup_operation();
   // }
}
```