@felmue said in UIFlow2.0 Tab5:

Hello @Handcannon

yes, I see that too. It seems that the latest versions (2.3.5 and 2.3.6) have power to port A disabled. E.g. port A has no power.

Please find my example in the UIFlow2 Project Zone which manually turns on power to port A: M5Tab5_Enable_Ext5V_EnvIV_Test_UIFlow2.3.6

I created an issue on github for this issue.

Thanks
Felix

I tried recreating your M5Tab5 script for the Core 2 and got these results:
(I realise that the RGB Unit doesn't use I2C but for port A to work I think I need to set it up in the same way anyway.)
The code:

import os, sys, io import M5 from M5 import * import m5ui import lvgl as lv from unit import RGBUnit from hardware import I2C from hardware import Pin import time page0 = None switch0 = None i2c0 = None rgb_0 = None bytearrayone = None def setup(): global page0, switch0, i2c0, rgb_0, bytearrayone M5.begin() Widgets.setRotation(1) m5ui.init() page0 = m5ui.M5Page(bg_c=0xffffff) switch0 = m5ui.M5Switch(x=130, y=105, w=60, h=30, bg_c=0xe7e3e7, bg_c_checked=0x2196f3, circle_c=0xffffff, parent=page0) page0.screen_load() bytearrayone = bytearray(1) i2c0 = I2C(0, scl=Pin(33), sda=Pin(32), freq=100000) i2c0.readfrom_mem_into(0x43, 0x03, bytearrayone) # set PI4IO P2 (Ext5V enable) as output print(hex(myByteArr[0])) myByteArr[0] |= 0x04 print(hex(myByteArr[0])) i2c0.writeto_mem(0x43, 0x03, bytearrayone) i2c0.readfrom_mem_into(0x43, 0x05, bytearrayone) # set PI4IO P2 (Ext5V enable) to high print(hex(myByteArr[0])) myByteArr[0] |= 0x04 print(hex(myByteArr[0])) i2c0.writeto_mem(0x43, 0x05, bytearrayone) time.sleep(1) rgb_0 = RGBUnit((33, 32), 3) def loop(): global page0, switch0, i2c0, rgb_0, bytearrayone M5.update() rgb_0.set_brightness(100) if switch0.has_state(lv.STATE.CHECKED): rgb_0.set_color(0, 0x6600cc) else: rgb_0.set_color(0, 0x000000) if __name__ == '__main__': try: setup() while True: loop() except (Exception, KeyboardInterrupt) as e: try: m5ui.deinit() from utility import print_error_msg print_error_msg(e) except ImportError: print("please update to latest firmware")

1st attempt:

E (725096) i2c: i2c driver install error E (725128) i2c: i2c driver install error E (725275) i2c: i2c driver install error Traceback (most recent call last): File "<stdin>", line 49, in <module> File "<stdin>", line 25, in setup OSError: [Errno 116] ETIMEDOUT

2nd attempt:

E (740623) i2c: i2c driver install error E (740655) i2c: i2c driver install error A fatal error occurred. The crash dump printed below may be used to help determine what caused it. If you are not already running the most recent version of MicroPython, consider upgrading. New versions often fix bugs. To learn more about how to debug and/or report this crash visit the wiki page at: https://github.com/micropython/micropython/wiki/ESP32-debugging MPY version : v1.25.0-dirty on 2025-09-30 IDF version : v5.4.2-dirty Machine : M5STACK Core2 with ESP32(SPIRAM) Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled. Core 1 register dump: PC : 0x40166a09 PS : 0x00060730 A0 : 0x800dc068 A1 : 0x3ffd92f0 A2 : 0x00000000 A3 : 0x3f4329e7 A4 : 0x00000000 A5 : 0x00000000 A6 : 0x00000001 A7 : 0x3ffd92f0 A8 : 0x00000074 A9 : 0x3ffc1090 A10 : 0x00000000 A11 : 0x3ffd94b0 A12 : 0x00000000 A13 : 0x00000001 A14 : 0x00000000 A15 : 0x00000004 SAR : 0x00000020 EXCCAUSE: 0x0000001c EXCVADDR: 0x00000088 LBEG : 0x400945b2 LEND : 0x400945bd LCOUNT : 0x00000000 Backtrace: 0x40166a06:0x3ffd92f0 0x400dc065:0x3ffd9330 0x400f5729:0x3ffd9350 0x400dc46d:0x3ffd9390 0x401ec3f5:0x3ffd93d0 0x401ec4bf:0x3ffd93f0 0x40087c62:0x3ffd9410 0x401e65a8:0x3ffd94b0 0x401ec3f5:0x3ffd9510 0x402161ac:0x3ffd9530 0x402161e9:0x3ffd9570 0x401ec3f5:0x3ffd9590 0x401ec479:0x3ffd95b0 0x402187a4:0x3ffd95e0 0x401ed36c:0x3ffd9660 0x4008739e:0x3ffd9680 0x401e65a8:0x3ffd9720 0x401ec3f5:0x3ffd9770 0x401ec4bf:0x3ffd9790 0x40087c62:0x3ffd97b0 0x401e65a8:0x3ffd9850 0x401ec3f5:0x3ffd9880 0x401ec40e:0x3ffd98a0 0x4021bbf6:0x3ffd98c0 0x4021beda:0x3ffd9950 0x401fde08:0x3ffd9990 ELF file SHA256: 1843f6d45 Rebooting... ets Jul 29 2019 12:21:46 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:1 load:0x3fff0030,len:4340 load:0x40078000,len:15972 load:0x40080400,len:4 ho 8 tail 4 room 4 load:0x40080404,len:3656 entry 0x400805c0 _ __ _ _ _(_)/ _| | _____ __ | | | | | |_| |/ _ \ \ /\ / / | |_| | | _| | (_) \ V V / \__,_|_|_| |_|\___/ \_/\_/ V2.3.6-hotfix2 E (2840) i2c: i2c driver install error

@robski , thanks for replying.
Yes I cannot log in to old account because I deleted it... It was my fault to not unbind the device before... Today I emailed m5stack support and they tell me that they will unbind the device for me. I only have to send them the MAC address.
Hopefully tomorrow I will be able to rebind the device and have it listed in UIFlow2 under my account again.
Very quick and good m5stack support indeed :)

general rule for RS485 bus is the same baudrate and parity on all slave devices and each device with different slave ID, max 32 devices on one chain

Hi @felmue @Physalice
This issue seems to be related to any unit with a screen. Anyway, we have fixed it!

Hello @RPI25

hmm, I've tested M5Core2 v1.1 and RGB with firmware v2.3.7 in UIFlow 2.3.7 and it works for me. No power issue at all.

You can find my example in the UIFlow2 Project Zone: M5Core2_RGB_Test_UIFlow2.3.7

Thanks
Felix

@scroggyg The file exists, could the path length be too long?
C:\Users\xxxxxxxxxxxxxx\xxxxxxxxxxxxxx\Documents\Arduino\hardware\espressif\esp32\tools\sdk\esp32s3\include\esp_rom\include\esp32\rom

@徐锦哲2013
上传了什么代码？把问题说明白

This is because UIFlow2.0 sucks with the M5Go. Almost no hardware works. I would abandon all the silly BS and go right to PlatformIO if you want to avoid pulling your hair out.

This ecosystem is so convoluted. I thought I might buy these for presents for kids. No way. Your average parent could not make this shit work ever.

@robski I wanted to create a simple flow for pupils that does not require more tools. it should be possible with the built in file manager, it seems like there is a bug , just wanted to know if there is a workaround

@macsbug link is dead
" pdf file not found "

How do you deprecate an API and not have documentation for the new API?

Here's the docs for the button class:

https://docs.m5stack.com/en/arduino/m5unified/touch_class

Where are the docs for the Display class? No one knows.

Where is the comprehensive, definitive documentation for this library? NOWHERE.

It has been 2 years.

I'm having the same issue with my Tab5, when I try USBMSC or SD2USBMSC examples in Arduino IDE they upload fine but I don't get a usb device on my computer. I did notice in the serial monitor that it says USB-Serial/JTAG, even though I changed the settings under tools, following this fellows video:
https://www.youtube.com/watch?v=hJSBTFsOnoA
He's using a ESP32-S3 and it seems to work fine. One thing I did discover in the ESP32-P4 docs is that it needs the strapping pins set in order to get the chip in Joint download mode:
https://docs.espressif.com/projects/esp-hardware-design-guidelines/en/latest/esp32p4/schematic-checklist-esp32p4.html#schematic-checklist-strapping-pins
It also can share the same lines for USB:
https://docs.espressif.com/projects/esp-hardware-design-guidelines/en/latest/esp32p4/schematic-checklist-esp32p4.html#usb
I think the usb-c might be connected to both sets of lines and the pins are not set correctly to select joint download mode. I couldn't really determine this in the schematics provided by M5 as they are confusing but I think they need to provide separate examples and libraries for the ESP32-P4 as it is quite different from the ESP32-S3

@shiqi 我也这样

Those generic 10-pack sensor modules from AliExpress have been a game-changer for prototyping - dirt cheap and surprisingly reliable for the price.

@dlhawley I never tried making custom blocks, but i assume that after saving them you have to add them to your custom block library using the big + button.
a9dbe015-f627-46be-8100-59832f99e93f-image.png

You can ask one of the AI chats, I use Gemini, in most cases it knows UiFlow2 pretty well.

I just grabbed an M5Stick and followed the instructions and got it working amazingly with ease.

Here's repo and the how to:
https://github.com/stevenselcuk/nearPlane

Good luck!
AD6GO