wtd reset after WiFi.forceSleepBegin();

[p99will]

Basic Infos

Hardware

Hardware: ESP-12E
Core Version: 2.4.0

Description

Getting watchdog reset when trying to turn off WiFi (to save power).

ets Jan  8 2013,rst cause:4, boot mode:(1,7)

wdt reset

I think there is a loop that is in the WiFi library that watchdog doesn't like.

I've tried replacing the delay with a loop calling yheld(); with a smaller delay, I still get error.

Settings in IDE

Module: Generic ESP8266 Module
Flash Size: 4MB
CPU Frequency: 80Mhz
Flash Mode: idk?
Flash Frequency: also dont know?
Upload Using: USB Serial.
Reset Method: idk, MCU?

Sketch

void loop() { 
    beginWIFI(); // reconnects WiFi if disconnect.
    beginMQTT(); // reconnects MQTT if it was disconnected.
    printValues();
    Serial.println("Turning off wifi");

    delay(100);
    client.disconnect();   //MQTT disconnect
    WiFi.disconnect();

    WiFi.forceSleepBegin(); // Error only occurs when using this.
    delay(1);

    delay(20 * 1000) //Delay 10 seconds -- Problem occurs while waiting. 

    WiFi.forceSleepWake();


}

Debug Messages

 ets Jan  8 2013,rst cause:4, boot mode:(1,7)

wdt reset

[p99will]

Sorry, correction: (I'll edit it 2morrow) but,
The problem doesn't occur at or during the delay. It occurs on anything after the delay. Including any Serial.write, additional delays and the force sleep wake.

[alexbelck]

I had same issue and figured out that I was usinig the wrong library.

For the ESP12e you need to use the "ESP8266WiFi" library, not the standar1 "WiFi"

Check if your code has the right #include <ESP8266WiFi.h>

[earlephilhower]

Closing, this is being tracked currently in #6172.