低功耗 stop 模式进入不了

发布于 2022-06-06 14:18:38 浏览：959 订阅该版

使用的开发板为 正点原子的 STM32F429IGTx 阿波罗开发板，内核版本为 4.0.4，PM组件版本为 2.0。参考文章 https://blog.csdn.net/sinat_31039061/article/details/106356068 对低功耗管理相关内容进行移植，拷贝了 drv_pm.c、drv_pmhw_f4.c、drv_pmhw.h 和 drv_pmtim.c 四个文件到工程中。

在测试时测试过程如下，下载程序后查看当前处于运行模式，然后请求 DeepSleep 也就是停止模式，然后释放掉 None Mode，此时板子进入不了 stop 模式，测试代码如下

```c
/*
 * Copyright (c) 2006-2018, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2019-05-09     Zero-Free    first implementation
 */

#include <board.h>
#include <rtthread.h>
#include <rtdevice.h>

#ifdef RT_USING_PM

#define WAKEUP_EVENT_BUTTON                 (1 << 0)
#define PIN_LED_R                           GET_PIN(B, 0)
#define WAKEUP_PIN                          GET_PIN(H, 3)
#define WAKEUP_APP_THREAD_STACK_SIZE        1024

static rt_event_t wakeup_event;

static void wakeup_callback(void *args)
{
    rt_event_send(wakeup_event, WAKEUP_EVENT_BUTTON);
}

static void wakeup_init(void)
{
    rt_pin_mode(WAKEUP_PIN, PIN_MODE_INPUT_PULLUP);
    rt_pin_attach_irq(WAKEUP_PIN, PIN_IRQ_MODE_FALLING, wakeup_callback, RT_NULL);
    rt_pin_irq_enable(WAKEUP_PIN, 1);
}

static void wakeup_app_entry(void *parameter)
{
    wakeup_init();
    rt_pm_request(PM_SLEEP_MODE_DEEP);
    rt_pm_release(PM_SLEEP_MODE_NONE);

while (1)
    {
        if (rt_event_recv(wakeup_event,
                          WAKEUP_EVENT_BUTTON,
                          RT_EVENT_FLAG_AND | RT_EVENT_FLAG_CLEAR,
                          RT_WAITING_FOREVER, RT_NULL) == RT_EOK)
        {
            rt_pm_request(PM_SLEEP_MODE_NONE);

rt_pin_mode(PIN_LED_R, PIN_MODE_OUTPUT);
            rt_pin_write(PIN_LED_R, 0);
            rt_thread_delay(rt_tick_from_millisecond(500));
            rt_pin_write(PIN_LED_R, 1);

rt_pm_release(PM_SLEEP_MODE_NONE);
        }
    }
}

static int wakeup_app(void)
{
    rt_thread_t tid;

wakeup_event = rt_event_create("wakup", RT_IPC_FLAG_FIFO);
    RT_ASSERT(wakeup_event != RT_NULL);

tid = rt_thread_create("wakeup_app", wakeup_app_entry, RT_NULL,
                           WAKEUP_APP_THREAD_STACK_SIZE, RT_MAIN_THREAD_PRIORITY, 20);
    RT_ASSERT(tid != RT_NULL);

rt_thread_startup(tid);

return 0;
}
//INIT_APP_EXPORT(wakeup_app);
MSH_CMD_EXPORT(wakeup_app, wakeup_app);

#endif

```

低功耗模式说明如下
![image.png](https://oss-club.rt-thread.org/uploads/20220606/b27c208ab7318eec532701960bbe8bd3.png.webp)

进入 deep sleep 模式的代码如下
![image.png](https://oss-club.rt-thread.org/uploads/20220606/cc79c55e26a43700cc77c56651e0fc14.png)

心灵的天空 2022-06-06

这家伙很懒，什么也没写！

crystal266 2022-06-06

嵌入式

测试代码
![image.png](https://oss-club.rt-thread.org/uploads/20220606/d11e253ee3a762de3b36813051350c8a.png)

日志信息
```
 \ | /
- RT -     Thread Operating System
 / | \     4.0.4 build Jun  6 2022 13:43:42
 2006 - 2021 Copyright by rt-thread team
[I/drv.rtc] RTC hasn't been configured, please use <date> command to config.
msh >
msh >wake
wakeup_app
msh >wakeup_app
line: 40
| Power Management Mode | Counter | Timer |
+-----------------------+---------+-------+
|             None Mode |       1 |     0 |
|             Idle Mode |       0 |     0 |
|       LightSleep Mode |       0 |     0 |
|        DeepSleep Mode |       1 |     1 |
|          Standby Mode |       0 |     0 |
|         Shutdown Mode |       0 |     0 |
+-----------------------+---------+-------+
pm current sleep mode: None Mode
pm current run mode:   Normal Speed

| module | busy | start time |  timeout  |
+--------+------+------------+-----------+
|  0001  |  0   | 0x00000000 | 0x00000000 |
+--------+------+------------+-----------+
line: 44
| Power Management Mode | Counter | Timer |
+-----------------------+---------+-------+
|             None Mode |       0 |     0 |
|             Idle Mode |       0 |     0 |
|       LightSleep Mode |       0 |     0 |
|        DeepSleep Mode |       1 |     1 |
|          Standby Mode |       0 |     0 |
|         Shutdown Mode |       0 |     0 |
+-----------------------+---------+-------+
pm current sleep mode: DeepSleep Mode
pm current run mode:   Normal Speed

| module | busy | start time |  timeout  |
+--------+------+------------+-----------+
|  0001  |  0   | 0x00000000 | 0x00000000 |
+--------+------+------------+-----------+
```