ESP32 Error while trying to receive CAN data

Projects General Guidance
1

Hi Arduino team,
i encountered a problem while trying to receive CAN data via I2C. The following code is a demo code provided by Longan for the CAN I2C (Longan_I2C_Arduino Libray) . It worked fine with Arduino Uno but when i tested it with an ESP32 S3 WROOM, an error occurred.

links: GitHub - Longan-Labs/I2C_CAN_Arduino: Arduino Library for I2C CAN Bus Module

Code:

#define CAN_250KBPS
#include <Wire.h>
#include "Longan_I2C_CAN_Arduino.h"

I2C_CAN CAN(0x25); // Set I2C Address

void setup()
{
Serial.begin(115200);
//while(!Serial);
Wire.begin(19,20);

Serial.println("begin to init can");

while (CAN_OK != CAN.begin(CAN_250KBPS))    // init can bus : baudrate = 500k
{
    Serial.println("CAN BUS FAIL!");
    delay(100);
}
Serial.println("CAN BUS OK!");
pinMode(13, OUTPUT);

}

void loop() { unsigned char len = 0; unsigned char buf[8]; 
if(CAN_MSGAVAIL == CAN.checkReceive())            // check if data coming
{
    CAN.readMsgBuf(&len, buf);    // read data,  len: data length, buf: data buf

    if(len)
    {
        unsigned long canId = CAN.getCanId();

        //Serial.print("Get ID: ");
        Serial.print(canId, HEX);
        Serial.print(" ");
        
        for(int i = 0; i<len; i++)    // print the data
        {
            Serial.print(buf[i], HEX);
            Serial.print("\t");
        }
        Serial.println();
    }
}

delay(10);
blink();

}

void blink()
{
static unsigned long timer_s = millis();
if(millis()-timer_s < 100)return;
timer_s = millis();
digitalWrite(13, 1-digitalRead(13));
}

ERROR:
Guru Meditation Error: Core 1 panic'ed (IllegalInstruction). Exception was unhandled.
Memory dump at 0x420026f8: f665b24b 000000ff cb008136
Core 1 register dump:
PC : 0x420026fd PS : 0x00060530 A0 : 0x8200204d A1 : 0x3fca3760
A2 : 0x3fc98044 A3 : 0x3fca3783 A4 : 0x3fca3784 A5 : 0x00000000
A6 : 0x0000002b A7 : 0x3fca375f A8 : 0x820026fd A9 : 0x3fca3720
A10 : 0x00000001 A11 : 0x3fc98048 A12 : 0x3fca3783 A13 : 0x3fca3784
A14 : 0x3fca373c A15 : 0x3fca372c SAR : 0x00000000 EXCCAUSE: 0x00000000
EXCVADDR: 0x00000000 LBEG : 0x40056f5c LEND : 0x40056f72 LCOUNT : 0xffffffff

Backtrace: 0x420026fa:0x3fca3760 0x4200204a:0x3fca3780 0x42005f3c:0x3fca37b0 0x4037ce46:0x3fca37d0

Thanks for your help!!
2

Posting an annotated schematic will help us help you find the problem. Be sure it shows all connections, power sources, grounds other hardware etc. Links to the technical information on the hardware devices also helps.

3

Hi, thanks for your reply
more information about the hardware i'm using:
I2C Can modul: I2C CAN BUS MODULE - Longan Docs
Elecrow display with ESP32 S3 WROOM: ESP32 display-5.0 Inch HMI Display 800x480 RGB TFT LCD Touch Screen Compatible with Arduino/LVGL

in the links you can find the schematic diagram.
ESP32_Dispaly_5.0_module-SCH+PCB_schematic.zip (370.5 KB)