Core 1 register dump, Rebooting after using Wifi and OLED I2C

[danaardana]

Hardware:

Board: ESP32 Dev Module
Core Installation version: 1.0.1
IDE name: Arduino IDE
Flash Frequency: ?40Mhz?
PSRAM enabled: no
Upload Speed: 115200
Computer OS: Windows 10

Description:

I'm trying to use wifi and I2C OLED realtime, my target actually to use bluetooth too but my priority is wifi. Plz help me

Sketch: (leave the backquotes for code formatting)

//Change the code below by your sketch
#include "ThingSpeak.h"
#include "secrets.h"  //Containt my wifi pass and ssid, thinspeak id and key. Start with "SECRET_ .."
#include <WiFi.h>
#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
#define OLED_SDA 17
#define OLED_SCL 16
// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
#define OLED_RESET     4 // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);


int keyIndex = 0;            // your network key Index number (needed only for WEP)
WiFiClient  client;
unsigned long myChannelNumber = SECRET_CH_ID; // My ID to connet to server
const char * myWriteAPIKey = SECRET_WRITE_APIKEY; // My secret key to upload it
int number = 0;

void setup() {
  Wire.begin(OLED_SDA,OLED_SCL);
  Serial.begin(512000); 
  WiFi.mode(WIFI_STA);   
  ThingSpeak.begin(client);  // Initialize ThingSpeak
  display.display();
}

void loop() {
  display.clearDisplay();
  display.setCursor(0,0);
  display.print("Data:");
  display.setCursor(25,0);
  display.display();
  display.print(number);
  
  // Connect or reconnect to WiFi
  if(WiFi.status() != WL_CONNECTED){
    Serial.print("Attempting to connect to SSID: ");
    Serial.println(SECRET_SSID);
    while(WiFi.status() != WL_CONNECTED){
      WiFi.begin(SECRET_SSID,SECRET_PASS); 
//      Serial.print(".");
      delay(5000);     
    } 
    display.setCursor(0,10);
    display.print("WIFI Connected");
    Serial.println("\nConnected.");
  }
  
  // Write to ThingSpeak. There are up to 8 fields in a channel, allowing you to store up to 8 different
  // pieces of information in a channel.  Here, we write to field 1.
  int x = ThingSpeak.writeField(myChannelNumber, 1, number, myWriteAPIKey);
  if(x == 200){
    Serial.println("Channel update successful.");
  }
  else{
    Serial.println("Problem updating channel. HTTP error code " + String(x));
  }
  
  // Testing the random value
  number=random(60,100);
  
  delay(2000); // Wait 20 seconds to update the channel again
}

Debug Messages:

Core 1 register dump:
PC      : 0x400d407c  PS      : 0x00060630  A0      : 0x800d1d74  A1      : 0x3ffb1f60  
A2      : 0x3ffc0b44  A3      : 0x00000000  A4      : 0x00000400  A5      : 0x00000001  
A6      : 0x0000001f  A7      : 0x00000000  A8      : 0x800d4055  A9      : 0x3ffb1f40  
A10     : 0x3ffc0e4c  A11     : 0x00000040  A12     : 0x401433ec  A13     : 0x00000006  
A14     : 0x0000001f  A15     : 0x401433ec  SAR     : 0x0000001c  EXCCAUSE: 0x0000001c  
EXCVADDR: 0x00000000  LBEG    : 0x4000c2e0  LEND    : 0x4000c2f6  LCOUNT  : 0x00000000  

Backtrace: 0x400d407c:0x3ffb1f60 0x400d1d71:0x3ffb1f80 0x400d60c7:0x3ffb1fb0 0x4008f035:0x3ffb1fd0

Rebooting...

[stickbreaker]

@Yeoboseo I think you need to call the init routine for the display

void setup(){
//
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);  // initialize with the I2C addr 0x3D (for the 128x64)
//

Chuck.

[danaardana]

I already tried it but it wont work, it just keep using the default SDA and SCL pins

[stickbreaker]

@Yeoboseo run this I2C scan sketch. See if the OLED is visible to the ESP32.

SSD1306 have the possibility of two addresses 0x3C and 0x3D. It could be wired different than standard.

Chuck.

[danaardana]

Yes i tried ti get addresses and example of 2 libraries, it works but when wifi turn on the oled get noise

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

This stale issue has been automatically closed. Thank you for your contributions.