I had the same bizarre issue and I found the solution here ! Just turn the USB C plug around and it works ! Weird.

finally have some time to continue on with this, I tried the esp32 download tool with exactly the parameters above and the demo files and I am getting an error in the CMD window of ..

"imageIsOk()" failed at ....\src\msw\bitmap.cpp(922) in wxBitmap::CreateFromImage(): invalid image

even if I only select the bootloader.bin section or any single part. odd .. so I looked at using the esptool.py supplied and copied the loader script from the flash.sh (made for linux), that works but I get exactly the same failed to connect as I do with platformio and also the same timing looking at pulseview, not surprising since both methods rely on esptool.

So I ended up adding a 100nF between the B-E of VT1, oddly enough I cannot see any improvement in the timing on pulseview but it programmed first attempt and every one thereafter so I am leaving it in place. perhaps the timing the ESP sees is a little different to what my salaea clone probe is showing.

@loboris I understand it. Thank you for your reply.

user this template:
https://github.com/m5stack/M5Stack-platformio

Thank you for you help,

now I solved the problem with esp32_digital_led_lib library.

Example:
[CODE]
#include "esp32_digital_led_lib.h"

// Enumberation ob LED's
// 9 0
// 8 1
// 7 2
// 6 3
// 5 4

#define LED_PORT 15

strand_t m_sLeds = {.rmtChannel = 0, .gpioNum = 15, .ledType = LED_WS2812B_V3, .brightLimit = 32, .numPixels = 10, .pixels = nullptr, ._stateVars = nullptr};

void Led_Init(void) {
pinMode (LED_PORT, OUTPUT);
digitalWrite (LED_PORT, LOW);

if(digitalLeds_initStrands(&m_sLeds, 1)) { E_TRACE("Can't init LED driver()\n"); } digitalLeds_resetPixels(&m_sLeds); // Set led 7 to red m_sLeds.pixels[7] = pixelFromRGBW(55, 0, 0, 0); digitalLeds_updatePixels(&m_sLeds);

}

[/CODE]

@gadjet OK got it to stop making a continuous beep by adding the M5.update(); in the loop.

Volume still doesn't work though.

Strange that this never affected me. But I've added a note to the LoRa section of my big post about all these boards.

Hi,
I'm not using M5ez yet but I will give it a try, I've set the background colour but I don't think it works with M5.Lcd.print commands.

@rop thanks for the pointers, I'll have a look at both.

@stuartrothrock Thanks for your feedback and suggestion. I have already contact our team to correct the error message. Now it shows in the right way.

The answer is:

conf.sda_io_num = 13; conf.scl_io_num = 4;

@Calin
Thanks but it's not working

board_build.f_cpu = 200000000L

but when I use the function :

//before Setup() int cpuSpeed = ESP.getCpuFreqMHz(); //In loop() Serial.println(cpuSpeed);

In my serial monitor it display 240

Yes yes it's working

Thanks you

Thank you Calin!

Hi @lastcaress,

You should be able to flash the standard M5Stack firmware onto the M5GO (you may need to use the "Erase" function on the ESP Flash Downloader Tool first).

If you want to use M5Cloud you will need to load the M5Cloud firmware onto the M5Stack - it is available here.

Not sure if you will be able to use the sensors using the same code - it depends how it is all setup.