ESP8266 don't work

Blynk_Coeur · November 18, 2019, 11:44am

Hi everyone!

I’m looking since last night to find a solution to my strange problem.

My two nodeMCU won’t run with my Blynk project !
My ESP32 is running well with my project.

This is the serial screenshot :

Nothing good.

I tried some basic examples, including blynk examples, everything works well.
I tried esp8266 core 2.5 and 2.61 without result.
I reinstall IDE and all libraries from scratch on an other computer too, but still same issue.

Dave1829 · November 18, 2019, 11:58am

maybe lightning hit your NodeMCU’s??

Blynk_Coeur · November 18, 2019, 11:59am

no, because blynk examples works well.

Dave1829 · November 18, 2019, 12:00pm

yeah, sounds weird, but that was the best i have…

(really was just suggesting hardware may have changed?)

100% sure your baud is correct?

Blynk_Coeur · November 18, 2019, 12:03pm

Yes, 115200 bauds !
I had the same idea

PeteKnight · November 18, 2019, 12:13pm

Things I’d try:

Restart your PC (it’s be helped with baud rate issues before for me)

Try a different USB port and cable

Try all different baud rates and hit the reset button on the NodeMCU until you find one where the MCU boot messages make sense, and use this baud rate for your serial print messages as well.

Load a sketch with the Erase Flash - All Flash Contents option.

Comment out any unusual libraries one at a time, along with the code that goes with them. You’ll eventually find what library it doesn’t like.

Pete.

Blynk_Coeur · November 18, 2019, 12:21pm

Thank you Peter,

The only thing I have not tried is to load sketch with the Erase Flash All Flash Contents.
I also think a library is involved !
I 'll try one bye one !
But why an installation from scratch does not work anymore on another computer?

PeteKnight · November 18, 2019, 12:55pm

Might also be worth going to core 2.4.x - you know my feelings on 2.5 and higher.

Pete.

Blynk_Coeur · November 18, 2019, 2:01pm

Just tried with 2.4.2, same issue
There is no compilation error .
And a MCU reset always give me 14:53:20.322 -> $l⸮+⸮ fR[⸮$⸮⸮E⸮⸮4⸮

And this is the only difference between nodeMCU and ESP32 libraries, same sketch with a choice before compiling.
Sketch on ESP32 run like a charm .

#define NODEMCU1
//#define ESP32

#ifdef NODEMCU1
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <ESP8266mDNS.h>
#endif

#ifdef ESP32
#include <BlynkSimpleEsp32.h>
#include <WiFi.h>
#include <ESPmDNS.h>
#endif

PeteKnight · November 18, 2019, 2:24pm

Do your NodeMCU boards definitely default to 115200?
My Wemos D1 Mins default to 74880

Pete.

Blynk_Coeur · November 18, 2019, 2:31pm

I changed to 9600 both, code and port, without effect
And has I said, my big home project is only impacted, all examples run with 115200 bauds without issue.
So I don’t understand , why this project run on ESP32 and not on ESP8266 since last upload.
I uploaded my previous version , but it’s still the same on the 2 NodeMCUs.

PeteKnight · November 18, 2019, 2:33pm

But if you’re getting some sort of hardware message on reboot you need to be at the native baud rate for the device, otherwise the message will be illegible.

Pete.

Blynk_Coeur · November 18, 2019, 2:38pm

Where to change this native rate?
And why can not both NodeMCUs work suddenly?
Another thing, the led does not blynk, so I’m sure the code does not work, and the Android app says nodemcu not connected.

Blynk_Coeur · November 18, 2019, 2:48pm

Are you talking about upload rate or serial monitor rate ?

PeteKnight · November 18, 2019, 2:55pm

Serial monitor rate. I’m not sure how to change it - maybe via an AT command with the original firmware, but I just set my serial baud rate to the default rate for the board i’m using so that I can set my serial monitor to the same rate and see messages from the hardware and the debug messages on the same debug screen.

When you’re connected at the correct baud rate and you do a reset you’ll see a message like this:

Jan  8 2013,rst cause:2, boot mode:(3,6)
load 0x4010f000, len 1384, room 16 
tail 8
chksum 0x2d
csum 0x2d
vbb28d4a3
~ld#

If you then start getting WDT resets you’ll see a stack trace that you can copy and paste into the ESP Exception Decoder that will help you find the issue, but if your serial monitor isn’t set to the native speed of the board you’ll just get rubbish which you can’t use in the Exception Decoder.

Pete.

Blynk_Coeur · November 18, 2019, 3:11pm

Bingo ! 74880 bauds …
Now I will try to find what is the problem

16:09:35.224 ->  ets Jan  8 2013,rst cause:2, boot mode:(3,6)
16:09:35.224 -> 
16:09:35.257 -> load 0x4010f000, len 1384, room 16 
16:09:35.257 -> tail 8
16:09:35.257 -> chksum 0x2d
16:09:35.257 -> csum 0x2d
16:09:35.257 -> v482516e3
16:09:35.257 -> ~ld
16:09:35.292 -> V2
16:09:35.292 -> Mo
16:09:35.326 -> ⸮

Lichtsignaal · November 19, 2019, 6:00am

github.com/esp8266/Arduino

ESP-12E troubleshooting (rst cause:2, boot mode:(3,6))

opened 06:12PM - 20 Aug 16 UTC

closed 02:30PM - 23 Aug 16 UTC

rkoptev

### Basic Infos #### Hardware Hardware: ESP-12E (ESP8266MOD) Core Version…: 2.3.0 ### Description Hi. Previously, I was able to flash ESP through Arduino IDE. The code worked well, although very often controller restarted with no reason. "... wdt reset ..." has been written to the COM port. I tried to turn off the watch dog timer with the help of ESP.wdtDisable() or simply to increase the timeout with ESP.wdtEnable(65535). This partly solves the problem, but restarts still have a place to be. But now, after a regular flashing I get this output in COM port: ets Jan 8 2013,rst cause:2, boot mode:(3,6) load 0x4010f000, len 1384, room 16 tail 8 chksum 0x2d csum 0x2d v09f0c112 ~ld And that's all. I tried to change the module in the IDE to "ESP8266 Generic", and to change the size of the memory, but no result. What could be the problem? And how to fix this behavior? ### Settings in IDE Module: NodeMCU 1.0 Flash Size: 4MB/3MB CPU Frequency: 80Mhz Upload Using: SERIAL ### Sketch ``` cpp #include <ESP8266WiFi.h> #include <WiFiClient.h> #include <ESP8266WebServer.h> #include <FS.h> #define DEV true #define STEPPER_EN_PIN 13 #define STEPPER_DIR_PIN 2 #define STEPPER_STEP_PIN 5 #define STEPPER_RPM 600 #define STEPPER_GEAR_RATIO 64 #define STEPPER_MICROSTEP 16 #define STEPPER_FULL_ROTATION 7000 #define SERVER_URL "example.com" #define SERVER_PORT 80 #define SERVER_CONNECTION_INTERVAL 10000 #define WIFI_DATA_FILENAME "/wifi.txt" #define WIFI_CONNECTION_TIMEOUT 10000 ESP8266WebServer server(80); char* ssid = new char[32]; char* password = new char[64]; bool jalousieState; void moveStepper(unsigned long steps, bool direction) { unsigned long period = 60000000L / (STEPPER_RPM * STEPPER_GEAR_RATIO * STEPPER_MICROSTEP * 2UL); steps *= STEPPER_GEAR_RATIO; Serial.print("Period = "); Serial.println(period); digitalWrite(STEPPER_DIR_PIN, direction); digitalWrite(STEPPER_EN_PIN, LOW); for (int i = 0; i < steps; i++) { digitalWrite(STEPPER_STEP_PIN, HIGH); delayMicroseconds(period); digitalWrite(STEPPER_STEP_PIN, LOW); delayMicroseconds(period); ESP.wdtFeed(); } digitalWrite(STEPPER_EN_PIN, HIGH); } void jalousieClose() { if (!jalousieState) return; Serial.println("Closing jalousie"); moveStepper(STEPPER_FULL_ROTATION, 1); jalousieState = false; } void jalousieOpen() { if (jalousieState) return; Serial.println("Opening jalousie"); moveStepper(STEPPER_FULL_ROTATION, 0); jalousieState = true; } void jalousieHome() { moveStepper(STEPPER_FULL_ROTATION, 1); jalousieState = false; } void handleWiFiCredentials() { if (!server.hasArg("SSID") || !server.hasArg("password")) { server.send(500, "text/plain", "Bag arguments"); return; } Serial.print("WiFi Credentials:\nSSID: "); Serial.println(server.arg("SSID")); Serial.print("Password: "); Serial.println(server.arg("password")); File wifiData = SPIFFS.open(WIFI_DATA_FILENAME, "w"); wifiData.println(server.arg("SSID")); wifiData.println(server.arg("password")); wifiData.close(); server.send(200, "text/plain", "Data saved"); ESP.reset(); } bool loadWiFiCredentials() { File wifiData = SPIFFS.open(WIFI_DATA_FILENAME, "r"); if (!wifiData) return false; String _ssid = wifiData.readStringUntil('\n'); _ssid.trim(); _ssid.toCharArray(ssid, 32); String _password = wifiData.readStringUntil('\n'); _password.trim(); _password.toCharArray(password, 64); wifiData.close(); return true; } void setup() { // Make the watch dog timeout longer ESP.wdtEnable(65535); Serial.begin(74880); Serial.setDebugOutput(DEV); pinMode(STEPPER_EN_PIN, OUTPUT); pinMode(STEPPER_DIR_PIN, OUTPUT); pinMode(STEPPER_STEP_PIN, OUTPUT); digitalWrite(STEPPER_EN_PIN, HIGH); // Initialize filesystem SPIFFS.begin(); bool loaded = loadWiFiCredentials(); if (loaded) { Serial.println("WiFi credentials loaded"); unsigned long connectionTime = millis(); WiFi.mode(WIFI_STA); WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) { delay(100); if (millis() - connectionTime > WIFI_CONNECTION_TIMEOUT) { Serial.println("Connection failed. Ereasing old Wifi credentials and starting AP to get new credentials."); SPIFFS.remove(WIFI_DATA_FILENAME); ESP.reset(); } } } else { Serial.println("WiFi credentials not found, starting AP"); WiFi.mode(WIFI_AP); WiFi.softAP("Pentagon228"); server.serveStatic("/", SPIFFS, "/public_html/WifiSetup.html"); server.serveStatic("/WifiSetup.css", SPIFFS, "/public_html/WifiSetup.css"); server.serveStatic("/WifiSetup.js", SPIFFS, "/public_html/WifiSetup.jsl"); server.on("/submit", HTTP_POST, handleWiFiCredentials); server.begin(); while(1) { server.handleClient(); ESP.wdtFeed(); } } jalousieHome(); } void loop() { delay(SERVER_CONNECTION_INTERVAL); Serial.println("I'm alive"); WiFiClient client; if (!client.connect(SERVER_URL, SERVER_PORT)) return; client.print(String("GET / HTTP/1.1\r\n") + "Host:" + SERVER_URL + ":" + SERVER_PORT + "\r\n" + "Connection: close\r\n\r\n"); unsigned long timeout = millis(); while (client.available() == 0) { ESP.wdtFeed(); delay(100); if (millis() - timeout > 5000) { client.stop(); return; } } while(client.available()){ String line = client.readStringUntil('\r'); Serial.println("Res: " + line); line.trim(); if (line.equals(String("open"))) { jalousieOpen(); return; } else if (line.equals(String("close"))) { jalousieClose(); return; } } } ```

Seems a bit of a generic error code. Maybe this helps, maybe not …

Blynk_Coeur · November 19, 2019, 6:17am

Thank you @Lichtsignaal, I have already explored this link.
I am creating a new sketch with copy and paste, step by step, until the problem is solved.
As I have snippets , it’s not too complicated even if it’s a bit long

  //***************** Initialize TIMERS and buttons *****************//
  Serial.println("init timers");
  //timer.setInterval(320L, receiver);
  // "Sacrificial" Timer - needed when deleting timers as that will kill first timer created...
  timer.setTimeout(10L, []() {
  });  // END sacrificial Function
  /*timer.setInterval(BlinkDelay1, blinkLedWidget);
  timer.setInterval(530L, ImageWidget);
  timer.setInterval(2000L, SensorRead);
  timer.setInterval(32000L, clockDisplay);
  timer.setInterval(50730L, activetoday);
  timer.setInterval(60020L, UpTime); //1"*/
  timer.setInterval(63160L, TempUpdate);
  //timer.setInterval(66170L, TempCompare);
  timer.setInterval(70050L, connectionstatus);
  //timer.setInterval(70980L, sonde);
  /*timer.setInterval(80090L,  FuelLevel);
  timer.setInterval(220020L, courbe);
  TimerConso = timer.setInterval(2030L, consumption);
  timer.disable(TimerConso);
  StartHeatingTimer = timer.setInterval(2030L, StartHeating);
  timer.disable(StartHeatingTimer);*/

  Serial.println("init timers done");
}

Dave1829 · November 19, 2019, 8:11am

been there, done that.

worked for me!

(but no idea why!)

Lichtsignaal · November 19, 2019, 8:12am

You might want to get a decent development platform like PlatformIO. It’ll make your life a whole lot easier. The Arduino IDE is a pain in the bum if you ask me.

A while a go I wrote a piece on PlatformIO, https://lichtsignaal.nl/2017/02/23/using-platformio-for-your-arduino-projects/, could be interesting to take a look. I’ve noticed you are a fanatic coder, so it could be worth checking it out (and let me know if you need more info, there are two articles on my site).