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Core2 for AWS

52
Topics

242
Posts

S

So my first steps in setting up a project with M5Stack AWS on my Mac OSX Big Sur (11.6). Installation of visual studio seems okay. When compiling the AWS IoT EduKit Getting Started PlatformIO Configuration File I get this error message
M5Stack Fire

88
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334
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N

@liemph

Fire Has PSRAM .. use Port C PIN ..
so it can't use Port C .

Fire 는PSRAM 이 있어요 그것이 C 포트에 GPIO를 사용합니다.
그래서 C 포트를 사용할수가 없답니다.

이 내용은 챗봇이 무척 많이 알려준 내용입니다..
M5stack Grey

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227
Posts

D

Burn of UIFlow2 (v2.2.4-16MB) to M5Core-Grey using M5Burner loads stub but not full firmware. Burn of UIFlow_M5GO (same M5Burner) works fine. The UIFlow2 burn results in inoperable M5GO even though final message says 'Burn Successfully, click here to return'.

Here is screen shot of output from Burn:

--chip auto --port /dev/tty.usbserial-01DB92E6 --baud 1500000 --before default_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size detect 0x9000 /Applications/M5Burner.app/Contents/Resources/packages/tmp/uiflow2-cfg.bin
esptool.py v4.7-dev
Serial port /dev/tty.usbserial-01DB92E6
Connecting...
.

Detecting chip type... Unsupported detection protocol, switching and trying again...
Connecting...
.

Detecting chip type...
ESP32
Chip is ESP32-D0WDQ6 (revision v1.0)
Features: WiFi, BT, Dual Core, 240MHz, VRef calibration in efuse, Coding Scheme None
Crystal is 40MHz
MAC: 98:f4:ab:6c:dc:00
Uploading stub...
Running stub...
Stub running...
Changing baud rate to 1500000
Changed.
Configuring flash size...
Auto-detected Flash size: 16MB
Flash will be erased from 0x00009000 to 0x0000efff...
Compressed 24576 bytes to 475...
Writing at 0x00009000... (100 %)
Wrote 24576 bytes (475 compressed) at 0x00009000 in 0.2 seconds (effective 1153.6 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting via RTS pin...
M5 Stick/StickC

M5Stack's little brother. Discuss M5 Stick hardware and software related issues here

398
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1.6k
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C

Dear board veterans and professionals,

After about a week of intensive work, I have made some progress, but I am still encountering a problem where I need your help.

Initially, my new M5StickC Plus2 didn't work.
I initially used the recommended drivers from 2021/2022.

After extensive research, I was finally able to find an up-to-date driver (2025).
Manufacturer's website / exact link: wch-ic.com

Nevertheless, the message "Unknown device" remains in the device management.

However, S/N, VID and PID are recognized.

The old driver already caused errors in a test program: among other things, the device name was missing, and other error messages appeared. The test program is a password generator originally designed for the M5StickC Plus.
was developed.

GitHub link to the application: [GH - Craftz Password Manager].

I may attach relevant files (error messages, screenshots, logs).
2026-01-03 08 19 56.png
I've already been able to solve many problems myself, but I'm stuck on the following point:

Compilation error: expected ';' before 'sha256'

I tried various approaches, e.g.:
init SHA256 Init SHA256() SHA256.sha256
Unfortunately, these attempts were unsuccessful.

I would be very grateful for suggestions or hints on what else I could test.

Warmest greetings and best wishes for the new year 2025
Chris

share-qr-code.png
[code_text](https://share-text.org/note/1767423695808)
M5GO

18
Topics

71
Posts

P

I just got the M5GO Kit, and I'm trying to make a Voice Assistant. For some reasons, the Demo of the kit made me think that accessing the microphone is easy. But, after hours of finding, it seems that there is no library or support for the kit to record audio. Does anyone have any resource regarding this?
FACES Kit

27
Topics

114
Posts

M

Problem:

Der Schrittmotor funktioniert nur korrekt in der Z-Achse bei normalen (langsamen) Drehgeschwindigkeiten.
Beim Versuch, die X- und Y-Achsen zu verwenden, funktioniert der Motor nur, wenn ich die Vorschubgeschwindigkeiten auf das 10-fache oder höher erhöhe.
Wenn ich versuche, die Adresse auf 0x71 zu ändern, wird das Modul nicht erkannt.
M5Stick V

50
Topics

133
Posts

Y

@samantha_martin Hola Samantha. El M5StickC Plus (SKU:K016-P) utiliza el chip ESP32-PICO-D4, que integra Bluetooth LE. Para reducir la latencia en la transmisión HID, puedes probar las siguientes acciones:

Optimizar la frecuencia de envío de datos: En las librerías ESP32-BLE-Keyboard o BleGamepad, ajusta el intervalo de notificación BLE a un valor más bajo (por ejemplo, 10-20 ms). Algunas librerías permiten configurar esto al inicializar el dispositivo HID.

Minimizar el código en el loop(): Asegúrate de que no haya delays innecesarios ni tareas bloqueantes (como impresiones Serial) que ralenticen la detección de botones y el envío de comandos.

Configurar el modo BLE de bajo consumo: Aunque el ESP32-PICO-D4 es eficiente, verifica que no se encuentre en modos de suspensión prolongada. Asegúrate de que el dispositivo BLE esté configurado para enviar notificaciones inmediatamente al detectar una pulsación.

Actualizar el firmware del ESP32: Usa la última versión del core ESP32 en Arduino IDE, ya que a menudo incluyen optimizaciones en el stack BLE.

Verificar la configuración de Android: En el menú de configuración de Bluetooth de tu teléfono, desactiva opciones como "Ahorro de batería" para el dispositivo M5StickC Plus, ya que pueden restringir la frecuencia de actualizaciones HID.

https://chat.m5stack.com/
Core 2

For Topics related to the Core 2

330
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1.4k
Posts

S

I should note that I am also using the SD card interface and whenever the SD is not detected on power up the display doesn't work either. I believe they are on the same bus.

A

I2C SHT31 Uiflow

• • AMaciejak

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https://forum.m5stack.com/topic/1419/m5stickc-sensor-sht-31
T

M5 Station category?

• • toddkrein

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No one has replied
J

(Posibly) Bricked M5Paper

• • jj__0

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In M5Burner you use the Erase button to "Nuke" the existing firmware.
D

Unit V2 power supply from HYP2.0-4P Grove connector

• • d.maky

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It is unofficial and cannot be guaranteed, but it works in my environment if I make my own cable to connect Grove's +5V and GND to the USB terminal side.

Please see the thread in the link below for detailed instructions on how to make it.

https://twitter.com/mongonta555/status/1401805311481061377
I

M5Stack Paper I2C Doesn't work

• • ispybadguys

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@Koiru I have not found a solution but I have found a workaround.

The culprit creating the constant reboots are the touchscreen, if I call the begin function without enabling the touchscreen I can get the unit to work instead of doing constant reboots.

To initialize the unit without touchscreen, use the following arguments:
M5.begin(false, true, true, true, true);
M

Atom Lite EspNow issue

• • mchott

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For me, the issue is resolved, but not quite with an eye to the future. I had the UI Flow IDE on the desktop 1.9.5 ( there is unfortunately not newer) and on the Atom Lite I had the 1.11.0. Thereby it came to incompatibilities that the EspNow in the newer variant works quite differently. BADLY.
M

Core ADC with 12V damaged

• • mchott

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Okay ... that falls then under "teaching money" and super stupid. Happens when it should always be done quickly on the side.
S

ESPNOW is broken

• • starcrouz

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Hi ajb2k3 & teastain,
thanks a lot for your advices.
I will look at micropython side but I'm very concerned by the fact that the UIFlow blocks I used have been deprecated without notice. I'm on a very bug hurry now.
I went back to V1.9.8 firmware on my M5StickCPlus and M5Core and everything is working again now. At least temporarily.
Have a good week
G

M5Paper error on Arduino upload

• • GordonD

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During compile I found this error message:
Multiple libraries were found for "SD.h"
Used: C:\Users\Gordon\AppData\Local\Arduino15\packages\m5stack\hardware\esp32\2.0.5\libraries\SD
Not used: C:\Program Files (x86)\Arduino\libraries\SD
Multiple libraries were found for "WiFiClient.h"
Used: C:\Users\Gordon\AppData\Local\Arduino15\packages\m5stack\hardware\esp32\2.0.5\libraries\WiFi
Not used: C:\Program Files (x86)\Arduino\libraries\WiFi
"C:\Users\Gordon\AppData\Local\Arduino15\packages\m5stack\tools\xtensa-esp32-elf-gcc\gcc8_4_0-esp-2021r2-patch3/bin/xtensa-esp32-elf-ar" cr "C:\Users\Gordon\AppData\Local\Temp\arduino_build_476900\core\core.a" "C:\Users\Gordon\AppData\Local\Temp\arduino_build_476900\core\esp32-hal-rgb-led.c.o"
remove core\core.a: The process cannot access the file because it is being used by another process.
"C:\Users\Gordon\AppData\Local\Arduino15\packages\m5stack\tools\xtensa-esp32-elf-gcc\gcc8_4_0-esp-2021r2-patch3/bin/xtensa-esp32-elf-ar" cr "C:\Users\Gordon\AppData\Local\Temp\arduino_build_476900\core\core.a" "C:\Users\Gordon\AppData\Local\Temp\arduino_build_476900\core\esp32-hal-rmt.c.o"
Error compiling for board M5Stack-Paper.

and then after compile I get this:
"C:\Users\Gordon\AppData\Local\Arduino15\packages\m5stack\tools\xtensa-esp32-elf-gcc\gcc8_4_0-esp-2021r2-patch3/bin/xtensa-esp32-elf-size" -A "C:\Users\Gordon\AppData\Local\Temp\arduino_build_476900/M5Paper_Hello_World.ino.elf"
Sketch uses 415801 bytes (6%) of program storage space. Maximum is 6553600 bytes.
Global variables use 18392 bytes (0%) of dynamic memory, leaving 4503592 bytes for local variables. Maximum is 4521984 bytes.
C:\Users\Gordon\AppData\Local\Arduino15\packages\m5stack\tools\esptool_py\3.3.0/esptool.exe --chip esp32 --port COM6 --baud 921600 --before default_reset --after hard_reset write_flash {upload.erase_cmd} -z --flash_mode dio --flash_freq 80m --flash_size 16MB 0x1000 C:\Users\Gordon\AppData\Local\Temp\arduino_build_476900/M5Paper_Hello_World.ino.bootloader.bin 0x8000 C:\Users\Gordon\AppData\Local\Temp\arduino_build_476900/M5Paper_Hello_World.ino.partitions.bin 0xe000 C:\Users\Gordon\AppData\Local\Arduino15\packages\m5stack\hardware\esp32\2.0.5/tools/partitions/boot_app0.bin 0x10000 C:\Users\Gordon\AppData\Local\Temp\arduino_build_476900/M5Paper_Hello_World.ino.bin
usage: esptool write_flash [-h] [--erase-all]
[--flash_freq {keep,80m,60m,48m,40m,30m,26m,24m,20m,16m,15m,12m}]
[--flash_mode {keep,qio,qout,dio,dout}]
[--flash_size FLASH_SIZE]
[--spi-connection SPI_CONNECTION] [--no-progress]
[--verify] [--encrypt]
[--encrypt-files <address> <filename> [<address> <filename> ...]]
[--ignore-flash-encryption-efuse-setting]
[--compress | --no-compress]
<address> <filename> [<address> <filename> ...]
esptool write_flash: error: argument <address> <filename>: Address "{upload.erase_cmd}" must be a number
esptool write_flash: error: argument <address> <filename>: Address "{upload.erase_cmd}" must be a number
A

m5stack core turns itself off

• • asshutossh

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@asshutossh Check for memory issues, Kernal panics and or Guru meditation errors using a terminal program.

There are only 2 causes for this.

the first is the battery not charged fully or The memory is getting filled and causing a kernal panic resulting it CPU shutoff or reset.
H

WebPage Display

• • H4CK3R69

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Hello,

after three years is it possible to show a static WebPage on the M5Stack/M5Core2?
Anyone has an idea?
J

M5Stack Station-485

• • jsarge

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Hello @jsarge

I don't know if and when the Station-485 will be added to the Arduino Board library. But since it uses the same ESP32 chip as the M5Stack Basic I'd guess selecting that should work. (Note: I do not (yet) have a Station-485 so I cannot test myself.)

M5Station-485 documentation is here including a link to the Arduino library.

Normally the preinstalled firmware is for UIFlow (not sure that is true for M5Station-485 though). Anyhow, UIFlow firmware can be installed via M5Burner found here.

Edit:
the preinstalled firmware on my M5Station is not UIFlow firmware. UIFlow (installed with M5Burner) works fine for me. I don't (yet) see the source code for the preinstalled firmware on github. the provided Arduino examples work fine for me selecting a generic M5Stack ESP32 device.
Thanks
Felix
N

M5Stack CoreInk RTC does not boot the device

• • nick-vr

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5
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After a lot of testing I came to the following conclusion:

The problem was that I waited too long before enabling GPIO pin 12 in my code. This pin is used to keep the device powered by the battery.

I'm just speculating here, but it seems like there is a time frame in which you need to enable this pin, otherwise the device will not successfully boot.

Thanks!
Nick
V

CoreInk UIFlow Deepsleep

• • ViQuaheeg520

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I didn't get anywhere setting GPIO1 however I downloaded UIFlow v3.0 from https://docs.m5stack.com/en/download and uploaded the latest version v1.10.1 to my Core Ink and now I have working Restart and Power On / Off :-)
O

M5GO starter kit non-response and black screen

• • otay2022

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C

upload code to STAMP PWR485

• • cepics

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Hello @cepics

according to the schematic both ports are connected in parallel - no need to select one (or the other).

Thanks
Felix
S

M5.shutdown() not working on M5Paper

• • schedule display

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Hello @schedule-display

Have you tried the RTC example (w/o modifications)?

In your code, why did you add the two gpio_xxx lines? I think they are the reason M5Paper cannot shutdown.

Also this thread might be helpful.

Thanks
Felix
S

Question on How to Update the M5Stack Sprite Library

• • Shift1313

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@macsbug Thanks for the tip I will give it a shot. The short demo video looks promising as I see a gauge that looks great. I have similar results with the Sprite library but fall short on compositing sprites past pushRotated.

Thanks
E

Control the joint on myCobot 280 in Python

• • ElephantRobotics

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M5Stack Basic Core stopped working

core • • j-j

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