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deep_sleep: on S2 disable the brown out detector before deep sleeping

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On S2 the brown out detector would occasionally trigger erroneously during deep sleep.

Disable it before sleeping to circumvent this issue.

Closes https://github.com/espressif/esp-idf/issues/6179
This commit is contained in:
Marius Vikhammer 2021-02-09 19:30:43 +08:00
parent 9274abf5c9
commit 0a4e5c99f9
6 changed files with 56 additions and 2 deletions
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10
components/esp32/include/esp32/brownout.h
View File

@ -16,6 +16,16 @@
#ifndef __ESP_BROWNOUT_H
#define __ESP_BROWNOUT_H
#ifdef __cplusplus
extern "C" {
#endif
void esp_brownout_init(void);
void esp_brownout_disable(void);
#ifdef __cplusplus
}
#endif
#endif

12
components/esp32c3/include/esp32c3/brownout.h
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@ -1,4 +1,4 @@
// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
// Copyright 2015-2021 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
@ -16,6 +16,16 @@
#ifndef __ESP_BROWNOUT_H
#define __ESP_BROWNOUT_H
#ifdef __cplusplus
extern "C" {
#endif
void esp_brownout_init(void);
void esp_brownout_disable(void);
#ifdef __cplusplus
}
#endif
#endif

4
components/esp32s2/include/esp32s2/brownout.h
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@ -1,4 +1,4 @@
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
// Copyright 2015-2021 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
@ -22,6 +22,8 @@ extern "C" {
void esp_brownout_init(void);
void esp_brownout_disable(void);
#ifdef __cplusplus
}
#endif

10
components/esp32s3/include/esp32s3/brownout.h
View File

@ -16,6 +16,16 @@
#ifndef __ESP_BROWNOUT_H
#define __ESP_BROWNOUT_H
#ifdef __cplusplus
extern "C" {
#endif
void esp_brownout_init(void);
void esp_brownout_disable(void);
#ifdef __cplusplus
}
#endif
#endif

15
components/esp_common/src/brownout.c
View File

@ -85,3 +85,18 @@ void esp_brownout_init(void)
brownout_hal_intr_enable(true);
#endif // not SOC_BROWNOUT_RESET_SUPPORTED
}
void esp_brownout_disable(void)
{
brownout_hal_config_t cfg = {
.enabled = false,
};
brownout_hal_config(&cfg);
#ifndef SOC_BROWNOUT_RESET_SUPPORTED
brownout_hal_intr_enable(false);
rtc_isr_deregister(rtc_brownout_isr_handler, NULL);
#endif // not SOC_BROWNOUT_RESET_SUPPORTED
}

7
components/esp_system/sleep_modes.c
View File

@ -58,6 +58,7 @@
#include "esp32s2/clk.h"
#include "esp32s2/rom/cache.h"
#include "esp32s2/rom/rtc.h"
#include "esp32s2/brownout.h"
#include "soc/extmem_reg.h"
#include "driver/gpio.h"
#elif CONFIG_IDF_TARGET_ESP32S3
@ -588,6 +589,12 @@ inline static uint32_t IRAM_ATTR call_rtc_sleep_start(uint32_t reject_triggers)
void IRAM_ATTR esp_deep_sleep_start(void)
{
#if CONFIG_IDF_TARGET_ESP32S2
/* Due to hardware limitations, on S2 the brownout detector sometimes trigger during deep sleep
to circumvent this we disable the brownout detector before sleeping */
esp_brownout_disable();
#endif //CONFIG_IDF_TARGET_ESP32S2
// record current RTC time
s_config.rtc_ticks_at_sleep_start = rtc_time_get();