mirror of
https://github.com/espressif/esp-idf.git
synced 2025-11-04 00:51:42 +01:00
109 lines
3.0 KiB
C
109 lines
3.0 KiB
C
/*
|
|
* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdbool.h>
|
|
#include "esp_private/system_internal.h"
|
|
#include "esp_private/rtc_ctrl.h"
|
|
#include "esp_private/spi_flash_os.h"
|
|
#include "esp_rom_sys.h"
|
|
#include "esp_cpu.h"
|
|
#include "soc/soc.h"
|
|
#include "soc/rtc_periph.h"
|
|
#include "esp_attr.h"
|
|
#include "bootloader_flash.h"
|
|
#include "esp_intr_alloc.h"
|
|
#include "hal/brownout_hal.h"
|
|
#include "hal/brownout_ll.h"
|
|
#include "sdkconfig.h"
|
|
|
|
#if defined(CONFIG_ESP_BROWNOUT_DET_LVL)
|
|
#define BROWNOUT_DET_LVL CONFIG_ESP_BROWNOUT_DET_LVL
|
|
#else
|
|
#define BROWNOUT_DET_LVL 0
|
|
#endif
|
|
|
|
#if CONFIG_ESP_SYSTEM_BROWNOUT_INTR
|
|
IRAM_ATTR static void rtc_brownout_isr_handler(void *arg)
|
|
{
|
|
/* Normally RTC ISR clears the interrupt flag after the application-supplied
|
|
* handler returns. Since restart is called here, the flag needs to be
|
|
* cleared manually.
|
|
*/
|
|
brownout_ll_intr_clear();
|
|
|
|
// Stop the other core.
|
|
#if !CONFIG_ESP_SYSTEM_SINGLE_CORE_MODE
|
|
const uint32_t core_id = esp_cpu_get_core_id();
|
|
const uint32_t other_core_id = (core_id == 0) ? 1 : 0;
|
|
esp_cpu_stall(other_core_id);
|
|
#endif
|
|
|
|
esp_reset_reason_set_hint(ESP_RST_BROWNOUT);
|
|
#if CONFIG_SPI_FLASH_BROWNOUT_RESET
|
|
if (spi_flash_brownout_need_reset()) {
|
|
bootloader_flash_reset_chip();
|
|
} else
|
|
#endif // CONFIG_SPI_FLASH_BROWNOUT_RESET
|
|
{
|
|
esp_rom_printf("\r\nBrownout detector was triggered\r\n\r\n");
|
|
}
|
|
|
|
esp_restart_noos();
|
|
}
|
|
#endif // CONFIG_ESP_SYSTEM_BROWNOUT_INTR
|
|
|
|
void esp_brownout_init(void)
|
|
{
|
|
#if CONFIG_ESP_SYSTEM_BROWNOUT_INTR
|
|
brownout_hal_config_t cfg = {
|
|
.threshold = BROWNOUT_DET_LVL,
|
|
.enabled = true,
|
|
.reset_enabled = false,
|
|
.flash_power_down = true,
|
|
.rf_power_down = true,
|
|
};
|
|
|
|
brownout_hal_config(&cfg);
|
|
brownout_ll_intr_clear();
|
|
#if CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32H2
|
|
// TODO IDF-6606: LP_RTC_TIMER interrupt source is shared by lp_timer and brownout detector, but lp_timer interrupt
|
|
// is not used now. An interrupt allocator is needed when lp_timer intr gets supported.
|
|
esp_intr_alloc(ETS_LP_RTC_TIMER_INTR_SOURCE, ESP_INTR_FLAG_IRAM, &rtc_brownout_isr_handler, NULL, NULL);
|
|
#else
|
|
rtc_isr_register(rtc_brownout_isr_handler, NULL, RTC_CNTL_BROWN_OUT_INT_ENA_M, RTC_INTR_FLAG_IRAM);
|
|
#endif
|
|
brownout_ll_intr_enable(true);
|
|
|
|
#else // brownout without interrupt
|
|
|
|
brownout_hal_config_t cfg = {
|
|
.threshold = BROWNOUT_DET_LVL,
|
|
.enabled = true,
|
|
.reset_enabled = true,
|
|
.flash_power_down = true,
|
|
.rf_power_down = true,
|
|
};
|
|
|
|
brownout_hal_config(&cfg);
|
|
#endif
|
|
}
|
|
|
|
void esp_brownout_disable(void)
|
|
{
|
|
brownout_hal_config_t cfg = {
|
|
.enabled = false,
|
|
};
|
|
|
|
brownout_hal_config(&cfg);
|
|
#if CONFIG_ESP_SYSTEM_BROWNOUT_INTR
|
|
brownout_ll_intr_enable(false);
|
|
rtc_isr_deregister(rtc_brownout_isr_handler, NULL);
|
|
#endif // CONFIG_ESP_SYSTEM_BROWNOUT_INTR
|
|
}
|