ESP32 Forum

I have a question about the operation of ESP32 after uploading code in the Arduino IDE environment.
This problem has been bothering me for several weeks.

Let me first describe my environment:
OS version: Windows 10 Pro 22H2 (19045.3324)
Arduino version: 1.8.13
Board Manager ESP32 version: 2.0.13 (by Espressif System)

The problem is described as follows:

This code was developed in 2021 using "DOIT ESP32 DEVKIT V1" and everything was working fine at that time.
Recently, I needed to copy a system and purchased two development boards "NodeMCU-32S" and "ESP32 DevKit V1" through the Internet for program upload.
After the upload was completed, I found through the Serial Monitor window that "the system booted repeatedly and continued to output register dumps" and the message "Guru Meditation Error: Core 1 Panic'ed (IllegalInstruction). Exception was unhandled" was displayed. Found in these messages.

The source code and the screenshots of Serial monitor output message are attached.

I would like to know:
1. What’s wrong with Code?
2. How should I deal with it?

You can debug the backtrace. https://github.com/espressif/arduino-es ... exceptions
If you roll back to the version of arduino-esp32 you originally programmed the code in, it is likely to work. You can see the branch dates at https://github.com/espressif/arduino-esp32/releases

Try adding a dummy return value to following function in IS31FL3733.cpp or better yet, make it a void :

uint8_t IS31FL3733::set_page(uint8_t page)
{
write_reg(0xFE, 0xC5);
write_reg(0xFD, page);
}

I had this exact same problem after moving to 2.0.11 ESP32 Arduino.

See https://esp32.com/viewtopic.php?f=19&t=35952

lbernstone wrote: ↑

Tue Sep 26, 2023 1:46 am

You can debug the backtrace. https://github.com/espressif/arduino-es ... exceptions
If you roll back to the version of arduino-esp32 you originally programmed the code in, it is likely to work. You can see the branch dates at https://github.com/espressif/arduino-esp32/releases

Thank you for your information.
I will try this again.

But I tested the LED flashing on the development board in the same development environment and it is normal.
So this has always puzzled me.

I will try your opinion, thank you!

markdh102 wrote: ↑

Tue Sep 26, 2023 6:23 am

Try adding a dummy return value to following function in IS31FL3733.cpp or better yet, make it a void :

uint8_t IS31FL3733::set_page(uint8_t page)
{
write_reg(0xFE, 0xC5);
write_reg(0xFD, page);
}

I had this exact same problem after moving to 2.0.11 ESP32 Arduino.

See https://esp32.com/viewtopic.php?f=19&t=35952

Thanks for the suggestion, I will try it, thank you!

lbernstone wrote: ↑

Tue Sep 26, 2023 1:46 am

You can debug the backtrace. https://github.com/espressif/arduino-es ... exceptions
If you roll back to the version of arduino-esp32 you originally programmed the code in, it is likely to work. You can see the branch dates at https://github.com/espressif/arduino-esp32/releases

After several days of testing, the same message appears no matter which version is used.

markdh102 wrote: ↑

Tue Sep 26, 2023 6:23 am

Try adding a dummy return value to following function in IS31FL3733.cpp or better yet, make it a void :

uint8_t IS31FL3733::set_page(uint8_t page)
{
write_reg(0xFE, 0xC5);
write_reg(0xFD, page);
}

I had this exact same problem after moving to 2.0.11 ESP32 Arduino.

See https://esp32.com/viewtopic.php?f=19&t=35952

Sorry, I've been thinking about your suggestions these days, but I don't know what code to add to IS31FL3733.cpp so that it will return dummy values. Can you give me some suggestions?

In the .cpp file change
to
In the .h file change
to