关于deep-sleep模式下功耗过高问题。

[zhoupeng]

在开启和未开启wifi模式下进入sleep模式的功耗差异：
1、未使能wifi功能，休眠功耗大致在5微安左右。
2、先使能wifi功能，后关闭wifi功能进入休眠模式，功耗增加至1.4毫安左右：
esp_wifi_stop();
esp_deep_sleep_start();

这种现象是否正常，是什么原因导致的。

谢谢！

[ESP_igrr]

This is a regression in recent ESP-IDF versions; we are working on a fix, but for now you can call adc_power_off function before entering deep sleep to reduce the current.

[zhoupeng]

This is a regression in recent ESP-IDF versions; we are working on a fix, but for now you can call adc_power_off function before entering deep sleep to reduce the current.

你好，谢谢你的回复。
我们使用的IDF版本是3.1：
1、这个现象是3.1版本才出现的吗，回滚回其它版本是否可以避免这个问题？
2、我们通过增加 adc_power_off 控制，功耗并没有下降。
3、近期是否版本发布计划修复此问题。

谢谢。

[ESP_igrr]

The issue is present in IDF 3.1.1 and 3.0.x versions as well; there likely exists a version on 3.0 branch which does not have the issue, but i can't say for sure which one is that.

Regarding adc_power_off not having effect, here's the code i used to test.
If I remove the adc_power_off line, then current is 1.4mA. If i add it back, current is 5.5uA.
Please check with this code sample to see if your issue is the same or not.

Code: Select all

#include "freertos/FreeRTOS.h"

#include "esp_wifi.h"

#include "esp_event_loop.h"

#include "nvs_flash.h"

#include "esp_sleep.h"

#include "driver/adc.h"



static void wifi_start_stop(void)

{

    ESP_ERROR_CHECK(nvs_flash_init());

    tcpip_adapter_init();

    ESP_ERROR_CHECK(esp_event_loop_init(NULL, NULL));



    wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();

    ESP_ERROR_CHECK(esp_wifi_init(&cfg));

    ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));

    ESP_ERROR_CHECK(esp_wifi_start());

    vTaskDelay(pdMS_TO_TICKS(1000));

    ESP_ERROR_CHECK(esp_wifi_stop());

    ESP_ERROR_CHECK(esp_wifi_deinit());

}



void app_main()

{

    wifi_start_stop();



    /* The following line is necessary to reproduce the issue;

     * An alternative way is to enable ext0 wakeup.

     */

    esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON);



    /* powering down ADC before entering sleep works around the issue */

    adc_power_off();



    esp_deep_sleep_start();

}

[zhoupeng]

The issue is present in IDF 3.1.1 and 3.0.x versions as well; there likely exists a version on 3.0 branch which does not have the issue, but i can't say for sure which one is that.

Regarding adc_power_off not having effect, here's the code i used to test.
If I remove the adc_power_off line, then current is 1.4mA. If i add it back, current is 5.5uA.
Please check with this code sample to see if your issue is the same or not.

Code: Select all

#include "freertos/FreeRTOS.h"

#include "esp_wifi.h"

#include "esp_event_loop.h"

#include "nvs_flash.h"

#include "esp_sleep.h"

#include "driver/adc.h"



static void wifi_start_stop(void)

{

    ESP_ERROR_CHECK(nvs_flash_init());

    tcpip_adapter_init();

    ESP_ERROR_CHECK(esp_event_loop_init(NULL, NULL));



    wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();

    ESP_ERROR_CHECK(esp_wifi_init(&cfg));

    ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));

    ESP_ERROR_CHECK(esp_wifi_start());

    vTaskDelay(pdMS_TO_TICKS(1000));

    ESP_ERROR_CHECK(esp_wifi_stop());

    ESP_ERROR_CHECK(esp_wifi_deinit());

}



void app_main()

{

    wifi_start_stop();



    /* The following line is necessary to reproduce the issue;

     * An alternative way is to enable ext0 wakeup.

     */

    esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON);



    /* powering down ADC before entering sleep works around the issue */

    adc_power_off();



    esp_deep_sleep_start();

}

你好 ，问题如你代码描述，已解决。

[ESP_igrr]

Hope this helps! I'll update this topic when the fix makes its way into a release.