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• ESPHome

  You can discuss ESPHome related issues here, share your yaml and projects.

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  K

  When I connect the QRCode module to a 9 V barrel jack, it doesn’t power on. I’d also like to know the best way to build a driver so the ESP32 can communicate directly with the scanner, since the Arduino example code provided only works inside the M5Stack ecosystem.

• Squareline Studio / LVGL

  Squareline Studio and LVGL Discussion

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  S

  @俺がガンダムだ said in LVGL performance problem:

  I applied LVGL on stickc-plus2，with TFT_eSPI's st7789v2 driver.But the refreshing rate is very low (while doing "load screen anim").I know stickc had good performance on drawing screen (by watching the video of M5stick T-Lite Thermal tutorial). And the LVGL also has a good performance through Dial-ESP32-S3 and Din-Meter demonstration video.

  So what is the reason of such low performance. Cound it be the TFT_eSPI library?

  I’ve seen similar issues on the StickC-Plus2. It could be due to TFT_eSPI settings, try increasing the SPI frequency or enabling DMA. Also, check your LVGL buffer config; full buffering helps with performance.

• UIFlow

  Discuss all things UIFlow here. Bugs, Improvements, Guides etc...

  Lessons and Guides Bug Report Custom Blocks
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  R

  @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
• Arduino

  M5Stack is programmable with the Arduino IDE. Here you can troubleshoot your issues and share Arduino code and libraries

  Lessons and Guides
  460
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  S

  @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

• Micropython

  Discuss all things Micropython here. Get help, Recommend Libraries, Report Bugs and Improvements

  Lessons and Guides
  214
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  887
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  S

  I'm building a MicroPython app on the UIFlow 2.3.6 os for a CoreS3.
  The new m5ui LVGL widgets are wonderful, eg List, Dropdown, that are populated with touch buttons to make the selection. If there are more options than fit in the visible list a scroll bar appears and the list can be dragged. But this is made unusable by the scrolling speed .. I believe due to the animation speed.

  When I load 15 to 20 unattached strings (like with Blockly) the scroll speed is passable at first, but seems to get slower over time. The animation becomes painfully intrusive, until it is taking several seconds to ripple to a halt. I am deep copying the strings to the list, so there's no linkage or processing drag.

  Is there any way to change the animation speed, or turn it off? Or any other workaround suggestions?

  Thanks so much for any advice or suggestions.

• M5EZ

  For discussion and assistance with M5EZ.

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  J

  using the mentioned changes hello_world example did compile and got uploaded to my core2. However , nothing is shown on screen, screen remains black.

• ESP - IDF

  Discuss all things related to ESP - IDF, Espressifs IoT Development Framework

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  F

  Hello @RubberDuck

  I can confirm the shark fin like signals on my M5CoreS3. I am no I2C expert, but I think they might be marginal and so maybe just barely working on one M5CoreS3 but not on the other when talking to AXP2101. Maybe a stronger pull-up resistor might help?

  BTW: I checked the I2C SCL line on an M5Core2 and it is much more rectangular, e.g. much more like I would expect it.

  Thanks
  Felix

• UiFlow 2.0

  UiFlow 2.0 related issues discussion.

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  R

  @felmue I have now tested my Grove cable along with Port A which is "working" with my CardKB:

  E (48366) i2c: i2c driver install error E (48399) i2c: i2c driver install error Traceback (most recent call last): File "<stdin>", line 35, in <module> File "<stdin>", line 30, in loop File "unit/cardkb.py", line 66, in tick File "unit/cardkb.py", line 60, in is_pressed File "unit/cardkb.py", line 39, in _get_key OSError: [Errno 116] ETIMEDOUT

  When I press the function key the RGB Led onboard lights up so the unit is receiving power but when I try the RGB Unit it still doesn't work with either one. I have seen a flicker of light at one point if that is helpful information.
  Thanks,
  RPI25