Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled

Projects Programming
1 
#include <Arduino.h>
#include <WiFi.h>
#include <Wire.h>
#include <MPU6050.h>
#include <WebServer.h>
#include <SPI.h>
#include <TinyGPS++.h>
#include "MAX30100_PulseOximeter.h"
#include <HardwareSerial.h>
#include "driver/i2s.h"
#include "AudioFileSourceICYStream.h"
#include "AudioFileSourceBuffer.h"
#include "AudioGeneratorMP3.h"
#include "AudioOutputI2SNoDAC.h"

// Replace with your network credentials
const char* ssid = "";
const char* password = "";

// Create a web server on port 80
WebServer server(80); 
MPU6050 mpu;
PulseOximeter pox;

// GPS
#define rxGPS 26
#define txGPS 25
HardwareSerial GPS(1);
TinyGPSPlus gps;

// I2S pins for MAX98357A
#define I2S_BCLK 32      // Bit clock line
#define I2S_LRCLK 33     // Word select (LR clock)
#define I2S_DOUT 19      // Data output (changed to GPIO 19)

const char *URL="http://kvbstreams.dyndns.org:8000/wkvi-am";

AudioGeneratorMP3 *mp3 = nullptr;
AudioFileSourceICYStream *file = nullptr;
AudioFileSourceBuffer *buff = nullptr;
AudioOutputI2SNoDAC *out = nullptr;

// Function declarations
void initMPU();
void initGPS();
void initWiFi();
void handleRoot();
void handleMPUData();
void handleGPSData();
void handlePulseOximeterData();
void playAudio();
void setupAudio();
void cleanupAudioResources();

// Setup function
void setup() { 
    Serial.begin(115200);
    initWiFi();
    initMPU();
    initGPS();

    server.on("/", handleRoot);
    server.on("/mpu6050", handleMPUData);
    server.on("/gps", handleGPSData);
    server.on("/pulseoximeter", handlePulseOximeterData);
    
    server.begin();

    // Initialize PulseOximeter
    if (!pox.begin()) {
        Serial.println("Failed to initialize PulseOximeter");
        while(1);
    }

    setupAudio();
}

// Loop function
void loop() {
    server.handleClient();
    pox.update(); // Updates the PulseOximeter
    playAudio();
}

// Audio metadata callback
void MDCallback(void *cbData, const char *type, bool isUnicode, const char *string) {
  const char *ptr = reinterpret_cast<const char *>(cbData);
  char s1[32], s2[64];
  strncpy_P(s1, type, sizeof(s1));
  strncpy_P(s2, string, sizeof(s2));
  Serial.printf("METADATA(%s) '%s' = '%s'\n", ptr, s1, s2);
}

// Audio status callback
void StatusCallback(void *cbData, int code, const char *string) {
  const char *ptr = reinterpret_cast<const char *>(cbData);
  char s1[64];
  strncpy_P(s1, string, sizeof(s1));
  Serial.printf("STATUS(%s) '%d' = '%s'\n", ptr, code, s1);
}

// Setup audio resources
void setupAudio() {
    i2s_pin_config_t pin_config = {
        .bck_io_num = I2S_BCLK,
        .ws_io_num = I2S_LRCLK,
        .data_out_num = I2S_DOUT,
        .data_in_num = I2S_PIN_NO_CHANGE
    };
    i2s_set_pin(I2S_NUM_0, &pin_config);

    audioLogger = &Serial;

    file = new AudioFileSourceICYStream(URL);
    if (!file) {
        Serial.println("Failed to allocate memory for AudioFileSourceICYStream.");
        return;
    }
    file->RegisterMetadataCB(MDCallback, (void*)"ICY");

    buff = new AudioFileSourceBuffer(file, 2048);
    if (!buff) {
        Serial.println("Failed to allocate memory for AudioFileSourceBuffer.");
        cleanupAudioResources();
        return;
    }
    buff->RegisterStatusCB(StatusCallback, (void*)"buffer");

    out = new AudioOutputI2SNoDAC();
    if (!out) {
        Serial.println("Failed to allocate memory for AudioOutputI2SNoDAC.");
        cleanupAudioResources();
        return;
    }

    mp3 = new AudioGeneratorMP3();
    if (!mp3) {
        Serial.println("Failed to allocate memory for AudioGeneratorMP3.");
        cleanupAudioResources();
        return;
    }
    mp3->RegisterStatusCB(StatusCallback, (void*)"mp3");

    if (!mp3->begin(buff, out)) {
        Serial.println("Failed to start MP3 playback.");
        cleanupAudioResources();
    }
}

// Play audio
void playAudio() {
    static int lastms = 0;

    if (mp3 && mp3->isRunning()) {
        if (millis() - lastms > 1000) {
            lastms = millis();
            Serial.printf("Running for %d ms...\n", lastms);
        }
        if (!mp3->loop()) {
            mp3->stop();
            cleanupAudioResources();
        }
    } else {
        Serial.println("MP3 done");
        delay(1000);
    }
}

// Cleanup audio resources
void cleanupAudioResources() {
    if (mp3) {
        delete mp3;
        mp3 = nullptr;
    }
    if (out) {
        delete out;
        out = nullptr;
    }
    if (buff) {
        delete buff;
        buff = nullptr;
    }
    if (file) {
        delete file;
        file = nullptr;
    }
}

// Function definitions for other sensors and WiFi
void initMPU() {
    Wire.begin(21, 22);
    Serial.println("Initializing MPU6050...");
    mpu.initialize();
    if (!mpu.testConnection()) {
        Serial.println("Failed to connect to MPU6050. Please check the connections.");
        while (1);
    }
    Serial.println("MPU6050 connected!");
}

void initGPS() {
    GPS.begin(9600, SERIAL_8N1, txGPS, rxGPS); 
    Serial.println("GPS module initialized.");
}

void initWiFi() {
    WiFi.mode(WIFI_STA);
    WiFi.begin(ssid, password);
    Serial.print("Connecting to WiFi...");
    while (WiFi.status() != WL_CONNECTED) {
        delay(1000);
        Serial.print(".");
    }
    Serial.println("\nConnected to WiFi!");
    Serial.print("ESP32 IP Address: ");
    Serial.println(WiFi.localIP());
}

void handleRoot() {
    server.send(200, "text/plain", "Hello from ESP32!");
}

void handleMPUData() {
    int16_t ax, ay, az;
    int16_t gx, gy, gz;
    mpu.getMotion6(&ax, &ay, &az, &gx, &gy, &gz);

    String json = "{";
    json += "\"ax\":" + String(ax) + ",";
    json += "\"ay\":" + String(ay) + ",";
    json += "\"az\":" + String(az) + ",";
    json += "\"gx\":" + String(gx) + ",";
    json += "\"gy\":" + String(gy) + ",";
    json += "\"gz\":" + String(gz);
    json += "}";

    server.send(200, "application/json", json);
}

void handleGPSData() {
    while (GPS.available()) {
        gps.encode(GPS.read());
    }

    if (gps.location.isValid()) {
        String json = "{";
        json += "\"latitude\":" + String(gps.location.lat(), 6) + ",";
        json += "\"longitude\":" + String(gps.location.lng(), 6) + ",";
        json += "\"altitude\":" + String(gps.altitude.meters(), 2);
        json += "}";
        server.send(200, "application/json", json);
    } else {
        server.send(200, "application/json", "{\"error\":\"No GPS fix\"}");
    }
}

void handlePulseOximeterData() {
    String json = "{";
    json += "\"heart_rate\":" + String(pox.getHeartRate()) + ",";
    json += "\"SpO2\":" + String(pox.getSpO2());
    json += "}";

    server.send(200, "application/json", json);
}

Log of the error messages:

Rebooting...
ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0030,len:1184
load:0x40078000,len:13232
load:0x40080400,len:3028
entry 0x400805e4
Connecting to WiFi....
Connected to WiFi!
ESP32 IP Address: 192.168.170.254
Initializing MPU6050...
MPU6050 connected!
GPS module initialized.
Guru Meditation Error: Core  1 panic'ed (LoadProhibited). Exception was unhandled.

Core  1 register dump:
PC      : 0x400e898c  PS      : 0x00060d30  A0      : 0x800d2ff8  A1      : 0x3ffb21c0  
A2      : 0x00000000  A3      : 0x3ffb21fc  A4      : 0x00000000  A5      : 0x00000021  
A6      : 0x00000000  A7      : 0xff000000  A8      : 0x800e892c  A9      : 0x00000002  
A10     : 0x001fe1df  A11     : 0x00000000  A12     : 0xffffffff  A13     : 0x00000000  
A14     : 0x3ffc43bc  A15     : 0xffffffff  SAR     : 0x00000013  EXCCAUSE: 0x0000001c  
EXCVADDR: 0x0000003c  LBEG    : 0x4008a544  LEND    : 0x4008a55a  LCOUNT  : 0xffffffff  


Backtrace: 0x400e8989:0x3ffb21c0 0x400d2ff5:0x3ffb21f0 0x400d3383:0x3ffb2230 0x400e5b42:0x3ffb2290




ELF file SHA256: a23377eab44b148e

Rebooting...
ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0030,len:1184
load:0x40078000,len:13232
load:0x40080400,len:3028
entry 0x400805e4
Connecting to WiFi....
Connected to WiFi!
ESP32 IP Address: 192.168.170.254
Initializing MPU6050...
MPU6050 connected!
GPS module initialized.
Guru Meditation Error: Core  1 panic'ed (LoadProhibited). Exception was unhandled.

Core  1 register dump:
PC      : 0x400e898c  PS      : 0x00060d30  A0      : 0x800d2ff8  A1      : 0x3ffb21c0  
A2      : 0x00000000  A3      : 0x3ffb21fc  A4      : 0x00000000  A5      : 0x00000021  
A6      : 0x00000000  A7      : 0xff000000  A8      : 0x800e892c  A9      : 0x00000002  
A10     : 0x001fe1df  A11     : 0x00000000  A12     : 0xffffffff  A13     : 0x00000000  
A14     : 0x3ffc43bc  A15     : 0xffffffff  SAR     : 0x00000013  EXCCAUSE: 0x0000001c  
EXCVADDR: 0x0000003c  LBEG    : 0x4008a544  LEND    : 0x4008a55a  LCOUNT  : 0xffffffff  


Backtrace: 0x400e8989:0x3ffb21c0 0x400d2ff5:0x3ffb21f0 0x400d3383:0x3ffb2230 0x400e5b42:0x3ffb2290




ELF file SHA256: a23377eab44b148e

Rebooting...
ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0030,len:1184
load:0x40078000,len:13232
load:0x40080400,len:3028
entry 0x400805e4
Connecting to WiFi...

I am not sure but this started happening only after installing ESP8266Audio library ,
FYI I am using Esp32 wrover kit E with platform.io

Here is my platformio.ini file

[platformio]

[env:esp-wrover-kit]
platform = espressif32
board = esp-wrover-kit
framework = arduino
board_build.flash_size = 4MB
lib_deps = 
	adafruit/Adafruit Unified Sensor@^1.1.14
	adafruit/Adafruit BusIO@^1.16.1
	esphome/AsyncTCP-esphome@^2.1.4
	esphome/ESPAsyncWebServer-esphome@^3.2.2
	electroniccats/MPU6050@^1.3.1
	mikalhart/TinyGPSPlus@^1.1.0
	https://github.com/dvarrel/AsyncTCP.git
	https://github.com/me-no-dev/ESPAsyncWebServer.git
	oxullo/MAX30100lib@^1.2.1
	earlephilhower/ESP8266Audio@^1.9.9

And I am using MAX98357A to connect to 4 ohm single speaker

Also the board keeps rebooting indefinitely, but if I interrupt any one of the connections of either MAX30100 / MPU6050 this rebooting stops this error shows up
Here is the error log for that

Initializing MPU6050...
[  2135][E][Wire.cpp:499] requestFrom(): i2cWriteReadNonStop returned Error 263
[  4142][E][Wire.cpp:499] requestFrom(): i2cWriteReadNonStop returned Error 263
[  5684][E][Wire.cpp:499] requestFrom(): i2cWriteReadNonStop returned Error 263
[  5819][E][Wire.cpp:499] requestFrom(): i2cWriteReadNonStop returned Error 263
[  5932][E][Wire.cpp:499] requestFrom(): i2cWriteReadNonStop returned Error 263
Failed to connect to MPU6050. Please check the connections.

Please ask for any clarrifications if needed

Thanks in advance

2

This type of error is usually caused by a bad pointer or invalid array index (really just another way to get a bad pointer).

Run the ESP Exception Decoder to get the source line causing the error and the call path that got there. Then figure out how the bad address was generated.

1 Like
3

I moved your topic to a more appropriate forum category @crackjam .

The Nano ESP32 category you chose is only used for discussions directly related to the Arduino Nano ESP32 board.

In the future, please take the time to pick the forum category that best suits the subject of your question. There is an "About the _____ category" topic at the top of each category that explains its purpose.

Thanks in advance for your cooperation.

1 Like
4

It doesn’t say Connected to WiFi, so the issue is with the WiFi library. Isolate just the WiFi code in another sketch and see if it crashes again.

1 Like
5 
#include <Arduino.h>
#include <WiFi.h>
#include <Wire.h>
#include <SPI.h>

const char* ssid = "";
const char* password = "";


void initWiFi();

void setup(){

    initWiFi();

}

void loop(){

}


void initWiFi() {
    WiFi.disconnect();
    WiFi.softAPdisconnect(true);
    WiFi.mode(WIFI_STA);
    WiFi.begin(ssid, password);
    Serial.print("Connecting to WiFi...");
    while (WiFi.status() != WL_CONNECTED) {
        delay(1000);
        Serial.print(".");
    }
    Serial.println("\nConnected to WiFi!");
    Serial.print("ESP32 IP Address: ");
    Serial.println(WiFi.localIP());
}

Logs for that

rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0030,len:1184
load:0x40078000,len:13232
load:0x40080400,len:3028
entry 0x400805e4

But my phone is showing that esp32 got connected

6

I tried to run an example from ESP8266Audio library. I did not get any result from this.

#include <Arduino.h>

#if defined(ARDUINO_ARCH_RP2040)
void setup() {}
void loop() {}

#else
#if defined(ESP32)
    #include <WiFi.h>
#else
    #include <ESP8266WiFi.h>
#endif
#include "AudioFileSourceICYStream.h"
#include "AudioFileSourceBuffer.h"
#include "AudioGeneratorMP3.h"
#include "AudioOutputI2SNoDAC.h"

// To run, set your ESP8266 build to 160MHz, update the SSID info, and upload.

// Enter your WiFi setup here:
#ifndef STASSID
#define STASSID ""
#define STAPSK  ""
#endif

const char* ssid = STASSID;
const char* password = STAPSK;

// Randomly picked URL
const char *URL="http://kvbstreams.dyndns.org:8000/wkvi-am";

AudioGeneratorMP3 *mp3;
AudioFileSourceICYStream *file;
AudioFileSourceBuffer *buff;
AudioOutputI2SNoDAC *out;

// Called when a metadata event occurs (i.e. an ID3 tag, an ICY block, etc.
void MDCallback(void *cbData, const char *type, bool isUnicode, const char *string)
{
  const char *ptr = reinterpret_cast<const char *>(cbData);
  (void) isUnicode; // Punt this ball for now
  // Note that the type and string may be in PROGMEM, so copy them to RAM for printf
  char s1[32], s2[64];
  strncpy_P(s1, type, sizeof(s1));
  s1[sizeof(s1)-1]=0;
  strncpy_P(s2, string, sizeof(s2));
  s2[sizeof(s2)-1]=0;
  Serial.printf("METADATA(%s) '%s' = '%s'\n", ptr, s1, s2);
  Serial.flush();
}

// Called when there's a warning or error (like a buffer underflow or decode hiccup)
void StatusCallback(void *cbData, int code, const char *string)
{
  const char *ptr = reinterpret_cast<const char *>(cbData);
  // Note that the string may be in PROGMEM, so copy it to RAM for printf
  char s1[64];
  strncpy_P(s1, string, sizeof(s1));
  s1[sizeof(s1)-1]=0;
  Serial.printf("STATUS(%s) '%d' = '%s'\n", ptr, code, s1);
  Serial.flush();
}


void setup()
{
  Serial.begin(115200);
  delay(1000);
  Serial.println("Connecting to WiFi");

  WiFi.disconnect();
  WiFi.softAPdisconnect(true);
  WiFi.mode(WIFI_STA);
  
  WiFi.begin(ssid, password);

  // Try forever
  while (WiFi.status() != WL_CONNECTED) {
    Serial.println("...Connecting to WiFi");
    delay(1000);
  }
  Serial.println("Connected");

  audioLogger = &Serial;
  file = new AudioFileSourceICYStream(URL);
  file->RegisterMetadataCB(MDCallback, (void*)"ICY");
  buff = new AudioFileSourceBuffer(file, 2048);
  buff->RegisterStatusCB(StatusCallback, (void*)"buffer");
  out = new AudioOutputI2SNoDAC();
  mp3 = new AudioGeneratorMP3();
  mp3->RegisterStatusCB(StatusCallback, (void*)"mp3");
  mp3->begin(buff, out);
}


void loop()
{
  static int lastms = 0;

  if (mp3->isRunning()) {
    if (millis()-lastms > 1000) {
      lastms = millis();
      Serial.printf("Running for %d ms...\n", lastms);
      Serial.flush();
     }
    if (!mp3->loop()) mp3->stop();
  } else {
    Serial.printf("MP3 done\n");
    delay(1000);
  }
}
#endif

Logs for it

3 done
eׁJun  8 2016 00:22:57

rst:0x1 (POWERON_RESEU�I����0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1

Running for 5682 ms...
STATUS(buffer) '2' = 'Refilling buffer'
STATUS(mp3) '257' = 'Decoding error 'lost synchronization' at byte offset 2048'
STATUS(mp3) '257' = 'Decoding error 'lost synchronization' at byte offset 2049'
STATUS(mp3) '257' = 'Decoding error 'lost synchronization' at byte offset 2050'
STATUS(mp3) '257' = 'Decoding error 'lost synchronization' at byte offset 2051'
STATUS(mp3) '257' = 'Decoding error 'lost synchronization' at byte offset 2052'
STATUS(mp3) '257' = 'Decoding error 'lost synchronization' at byte offset 2053'
STATUS(mp3) '257' = 'Decoding error 'lost synchronization' at byte offset 2054'
STATUS(mp3) '257' = 'Decoding error 'lost synchronization' at byte offset 2055'
.
.
.

then after a while I am getting

mp3 done
mp3 done
.
.
.

My connections above are as follows ,

MAX98357A LRC -> GPIO 25
MAX98357A BCLK -> GPIO 26
MAX98357A DIN -> GPIO 22

FYI , I am connecting the above with MPU6050 and MAX30100 to 22 , 21 for SDA and SCL respectively

I did not get any result with this as well

But here I'm not getting the above error Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled

Assuming the below schematic

image
image1284×855 120 KB

7

Is the ESP8266Audio library supposed to work on an ESP32?

8

That doesn't show a crash, just a normal start up.

9

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