Never mind. As simple Python code.

Thanks!

Sorry for the newbe questions. You've been a big help.

When you say you load files to ram from the boot.py file, how do you access that ram from the main.py file?

I'm trying to read from the SD card on startup and then use the display.

If I access the sd card, the program runs with no errors, but nothing displays.

I tried initializing the display using the example you gave, but I get an error that there isn't enough DMA-able memory to allocate the display buffer.

/Chris

Actually, ampy is working fairly well.

Thanks,
/Chris

But I guess any serial-console (i.E. PuTTY) should allow you to see error messages.
Also check micropython.org for instructions to get a REPL over the serial port.

That's all working now, including using ampy to copy files and run code.

I'm use to using Mu Editor with my other ESP32 boards.

Is there some way to run Python code and get back error messages if there is an issue in the code?

Thanks!
/Chris

/Chris

I tried to get your compiled firmware, but that ZippyShare site keeps trying to download other things and I can't get it to download your file.

Thanks,
/Chris

Another note: you do not need to use another firmware, you can use Micropython directly by just not using uiflow. See my repo https://github.com/hjgode/m5home within the lv dir: lv_test.py
Be warned, the LV Binding is not very well documented and often only links to the C API.

1. during boot mount the sdcard and load files to ram
2. then unmout the sdcard
3. initialize the display

something like:

import uos
from machine import Pin, SDCard

sdcard = SDCard(slot=2, sck=Pin(18), miso=Pin(38), mosi=Pin(23),  cs=Pin(4), freq=40000000)
uos.mount(sdcard, '/sd')
...
uos.umount('/sd')
sdcard.deinit()

before initializing the display:

from ili9XXX import ili9341
lcd = ili9341(spihost=1, mosi=23, miso=38, clk=18, dc=15, cs=5, invert=True, rot=0xC0, width=320, height=240, rst=-1, power=-1, backlight=-1)

I'm loading weathericons to use with openweathermap that way.

@dhed
hi Dhed, is it possible for you to share the last bin pure lv_micropython firmware for M5CORE ?
it's been several days i 'm trying to compile it but i'm a win64 user... it's hard for me.

Here's my compiled firmware: zippyshare-link.
Should be flashable with:

esptool.py --chip esp32 -p COM3 -b 460800 erase_flash
esptool.py -p COM3 -b 460800 --before default_reset --after hard_reset write_flash --flash_mode dio --flash_freq 80m --flash_size 16MB 0x8000 partition-table.bin 0x1000 bootloader.bin 0x10000 micropython.bin

(flashing works even under Windows with the ESP-IDF toolchain installed)

Stuff I tested successfully on my M5Core2:

• display with lvgl widgets
• touchscreen
• WLAN
• RTC
• SDCard (read)

Might be interesting for people searching pure Micropython + lvgl on the Core2.

Translated with www.DeepL.com/Translator (free version)