ESP8266 Community Forum

- Mon Dec 28, 2020 3:50 am #89980 Hello. I have the same issue. I used the following sketch for debugging which I found in the internet.

Code: Select all #include <Arduino.h>
extern "C" {
#include <user_interface.h>
}

#define LED_PIN LED_BUILTIN

void setup() {
  delay(1000);

  pinMode(LED_PIN, OUTPUT);
 
  Serial.begin(74880);
  Serial.setTimeout(2000);

  digitalWrite(LED_PIN, false);

  // Wait for serial to initialize.
  while(!Serial) { }

  Serial.print("Chip ID: ");
  Serial.println(ESP.getChipId());

  rst_info *rinfo = ESP.getResetInfoPtr();

  Serial.print(String("\nResetInfo.reason = ") + (*rinfo).reason + ": " + ESP.getResetReason() + "\n");

  Serial.println("."); 
  Serial.println("I'm awake.");

  delay(1000);

  Serial.println("Going into deep sleep for 3 seconds");
  ESP.deepSleep(3e6);   

  delay(5000);
}
void loop() {
  //empty
}


When I run this code on a D1 mini board (GPIO16/D0 NOT connected to RST) I get the following output

Code: Select allChip ID: 11442368

ResetInfo.reason = 6: External System
.
I'm awake.
Going into deep sleep for 3 seconds

 ets Jan  8 2013,rst cause:5, boot mode:(3,0)

ets_main.c


After this, I have to press the reset button twice before the board resets and will get the following output.

Code: Select all ets Jan  8 2013,rst cause:2, boot mode:(3,6)


 ets Jan  8 2013,rst cause:2, boot mode:(3,6)

load 0x4010f000, len 3584, room 16
tail 0
chksum 0xb0
csum 0xb0
v2843a5ac
~ld
Chip ID: 11442368

ResetInfo.reason = 5: Deep-Sleep Wake
.
I'm awake.
Going into deep sleep for 3 seconds


Now I connected GPIO16/D0 to RST and run the sketch again.

Code: Select allChip ID: 11442368

ResetInfo.reason = 6: External System
.
I'm awake.
Going into deep sleep for 3 seconds

 ets Jan  8 2013,rst cause:2, boot mode:(3,6)


 ets Jan  8 2013,rst cause:2, boot mode:(3,6)

load 0x4010f000, len 3584, room 16
tail 0
chksum 0xb0
csum 0xb0
v2843a5ac
~ld
Chip ID: 11442368

ResetInfo.reason = 5: Deep-Sleep Wake
.
I'm awake.
Going into deep sleep for 3 seconds

 ets Jan  8 2013,rst cause:5, boot mode:(3,6)

ets_main.c


I still had to press the reset button once to make the board to wake up again.

Any suggestion what I'm doing wrong?

BTW: The board used, is a fresh new D1 Mini NodeMcu with ESP8266MOD 12F board just connected via USB to Computer. On top, I use Arduino IDE if this might be helpful.