/*
*  Print last reset reason of ESP32
*  =================================
*
*  Use either of the methods print_reset_reason
*  or verbose_print_reset_reason to display the
*  cause for the last reset of this device.
*
*  Public Domain License.
*
*  Author:
*  Evandro Luis Copercini - 2017
*/

#include <Arduino.h>

#if CONFIG_IDF_TARGET_ESP32  // ESP32/PICO-D4
#include "esp32/rom/rtc.h"
#elif CONFIG_IDF_TARGET_ESP32S2
#include "esp32s2/rom/rtc.h"
#elif CONFIG_IDF_TARGET_ESP32C2
#include "esp32c2/rom/rtc.h"
#elif CONFIG_IDF_TARGET_ESP32C3
#include "esp32c3/rom/rtc.h"
#elif CONFIG_IDF_TARGET_ESP32S3
#include "esp32s3/rom/rtc.h"
#elif CONFIG_IDF_TARGET_ESP32C6
#include "esp32c6/rom/rtc.h"
#elif CONFIG_IDF_TARGET_ESP32H2
#include "esp32h2/rom/rtc.h"
#elif CONFIG_IDF_TARGET_ESP32P4
#include "esp32p4/rom/rtc.h"
#elif CONFIG_IDF_TARGET_ESP32C5
#include "esp32c5/rom/rtc.h"
#elif CONFIG_IDF_TARGET_ESP32C61
#include "esp32c61/rom/rtc.h"
#else
#error Target CONFIG_IDF_TARGET is not supported
#endif

#define uS_TO_S_FACTOR 1000000 /* Conversion factor for micro seconds to seconds */

void print_reset_reason(int reason) {
  switch (reason) {
    case 1:  Serial.println("POWERON_RESET"); break;          /**<1,  Vbat power on reset*/
    case 3:  Serial.println("SW_RESET"); break;               /**<3,  Software reset digital core*/
    case 4:  Serial.println("OWDT_RESET"); break;             /**<4,  Legacy watch dog reset digital core*/
    case 5:  Serial.println("DEEPSLEEP_RESET"); break;        /**<5,  Deep Sleep reset digital core*/
    case 6:  Serial.println("SDIO_RESET"); break;             /**<6,  Reset by SLC module, reset digital core*/
    case 7:  Serial.println("TG0WDT_SYS_RESET"); break;       /**<7,  Timer Group0 Watch dog reset digital core*/
    case 8:  Serial.println("TG1WDT_SYS_RESET"); break;       /**<8,  Timer Group1 Watch dog reset digital core*/
    case 9:  Serial.println("RTCWDT_SYS_RESET"); break;       /**<9,  RTC Watch dog Reset digital core*/
    case 10: Serial.println("INTRUSION_RESET"); break;        /**<10, Instrusion tested to reset CPU*/
    case 11: Serial.println("TGWDT_CPU_RESET"); break;        /**<11, Time Group reset CPU*/
    case 12: Serial.println("SW_CPU_RESET"); break;           /**<12, Software reset CPU*/
    case 13: Serial.println("RTCWDT_CPU_RESET"); break;       /**<13, RTC Watch dog Reset CPU*/
    case 14: Serial.println("EXT_CPU_RESET"); break;          /**<14, for APP CPU, reset by PRO CPU*/
    case 15: Serial.println("RTCWDT_BROWN_OUT_RESET"); break; /**<15, Reset when the vdd voltage is not stable*/
    case 16: Serial.println("RTCWDT_RTC_RESET"); break;       /**<16, RTC Watch dog reset digital core and rtc module*/
    default: Serial.println("NO_MEAN");
  }
}

void verbose_print_reset_reason(int reason) {
  switch (reason) {
    case 1:  Serial.println("Vbat power on reset"); break;
    case 3:  Serial.println("Software reset digital core"); break;
    case 4:  Serial.println("Legacy watch dog reset digital core"); break;
    case 5:  Serial.println("Deep Sleep reset digital core"); break;
    case 6:  Serial.println("Reset by SLC module, reset digital core"); break;
    case 7:  Serial.println("Timer Group0 Watch dog reset digital core"); break;
    case 8:  Serial.println("Timer Group1 Watch dog reset digital core"); break;
    case 9:  Serial.println("RTC Watch dog Reset digital core"); break;
    case 10: Serial.println("Instrusion tested to reset CPU"); break;
    case 11: Serial.println("Time Group reset CPU"); break;
    case 12: Serial.println("Software reset CPU"); break;
    case 13: Serial.println("RTC Watch dog Reset CPU"); break;
    case 14: Serial.println("for APP CPU, reset by PRO CPU"); break;
    case 15: Serial.println("Reset when the vdd voltage is not stable"); break;
    case 16: Serial.println("RTC Watch dog reset digital core and rtc module"); break;
    default: Serial.println("NO_MEAN");
  }
}

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  delay(2000);

  Serial.println("CPU0 reset reason:");
  print_reset_reason(rtc_get_reset_reason(0));
  verbose_print_reset_reason(rtc_get_reset_reason(0));

  Serial.println("CPU1 reset reason:");
  print_reset_reason(rtc_get_reset_reason(1));
  verbose_print_reset_reason(rtc_get_reset_reason(1));

#ifndef CONFIG_IDF_TARGET_ESP32H2
  // Set ESP32 to go to deep sleep to see a variation
  // in the reset reason. Device will sleep for 5 seconds.
#if CONFIG_IDF_TARGET_ESP32C3 || CONFIG_IDF_TARGET_ESP32H2
  esp_sleep_pd_config(ESP_PD_DOMAIN_RC_FAST, ESP_PD_OPTION_OFF);
#else
  esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_OFF);
#endif
  Serial.println("Going to sleep");
  esp_deep_sleep(5 * uS_TO_S_FACTOR);
#endif
}

void loop() {
  // put your main code here, to run repeatedly:
}

/*
  Example Serial Log:
  ====================

rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0x00
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0008,len:8
load:0x3fff0010,len:160
load:0x40078000,len:10632
load:0x40080000,len:252
entry 0x40080034
CPU0 reset reason:
RTCWDT_RTC_RESET
RTC Watch dog reset digital core and rtc module
CPU1 reset reason:
EXT_CPU_RESET
for APP CPU, reset by PRO CPU
Going to sleep
ets Jun  8 2016 00:22:57

rst:0x5 (DEEPSLEEP_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0x00
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0008,len:8
load:0x3fff0010,len:160
load:0x40078000,len:10632
load:0x40080000,len:252
entry 0x40080034
CPU0 reset reason:
DEEPSLEEP_RESET
Deep Sleep reset digital core
CPU1 reset reason:
EXT_CPU_RESET
for APP CPU, reset by PRO CPU
Going to sleep
ets Jun  8 2016 00:22:57

rst:0x5 (DEEPSLEEP_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0x00
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0008,len:8
load:0x3fff0010,len:160
load:0x40078000,len:10632
load:0x40080000,len:252
entry 0x40080034
CPU0 reset reason:
DEEPSLEEP_RESET
Deep Sleep reset digital core
CPU1 reset reason:
EXT_CPU_RESET
for APP CPU, reset by PRO CPU
Going to sleep

*/
