@felmue said in M5Stack Core Basic as Meshtastic Device:

Hi guys

I don't think you can use pre-compiled Meshtastic firmware as some GPIOs used in pre-compiled firmware cannot be selected in LoRa868 V1.1 module.

From the M5Stack Meshtastic variant.h file and the previous LoRa module I understand the following GPIOs are used:

SCK : GPIO18 MISO : GPIO19 MOSI : GPIO23 CS/NSS: GPIO5 IRQ : GPIO36 RST : GPIO26

However the newer LoRa868 V1.1 module doesn't allow to select GPIO36 as IRQ nor GPIO26 as RST.

So I think you either need to compile Meshtastic firmware (with the correct GPIOs) yourself, get the older LoRa868 module or modify the V1.1 hardware.

Note: I do not have the necessary hardware to test this myself - so my above conclusions could be incorrect.

Thanks
Felix

Is there an answer from M5Stack specialists?

@johan_s Hi John sorry for the long delay.

I had a chance to play with the frame buffer today after remembering this conversation.

I am finding the issue with the small text/garbidge written to the screen that you shared and looking into it.

Thanks for the point out.

@felmue

Thanks again, you're the M5man!

@mgrouch I don't have the slightest idea.
I run the apt update and apt upgrade to make sure I have the latest version.

@WigglerAway You will need to check out the documentation on the M5Stack website for the exact pins but by default UART1 is broken out to the blue port and UART 2 is broken out to the MBUS connector.

The CoreMP135 has UART1 broken out to the blue port, UART2 to the MBUS and UART6 broken out to the RS485 connector.

@felmue That was it thanks! All working now.

Bipman

The latest image now has flutter-ui boatinstrument interface on hdmi port.

SignalK is available via web ui. As well as FreeboardSK and KIP dashboard.

After two reboots SD card partition is resized to max available space.

NMEA 2000 interface is ready. All you need to do is connect two wires.

Most of USB gps devices are recognized on plugging in automatically.

Image includes Victron Web UI as well.

Console access is available via USB-C port at
115200 bauds.

Thanks!

@felmue

Thank you so much for your help, I’ll give it a try and report back :)

Is this correct?
934076f9-0958-4a54-a5da-4679796a8cb2-image.png

@ajb2k3 said in CoreMP135 screen saver sleep for built in LCD:

@mgrouch You need to create a program for that

I do not see how. There are examples for displaying things on ILI9342C
using framebuffer and LVGL.
I do not see how to turn off backlight on ILI9342C. Is there some code example? Or command line utility with the code to control brightness? I was able to code that on m5stack tough on esp32 which has same ILI9342C.

Also how to wake up screen by touch?
I guess with brightness off touch functions are still there. So I need example of code listening for touch event and controlling backlight (voltage of it?) on ILI9342C.

I need some help.
Thanks

Hello @mgrouch

well, you might notice the lowercase b in Gb which means it's 4 Gigabit (not 4 GigaByte). 1 byte equals 8 bits. So you'll need to divide the number by 8 if you want to convert Gigabit to GigaByte.

4'000 Mb / 8 = 500 MB

So about 462 MB (MegaByte) free seems plausible.

Thanks
Felix

I can share a few thoughts on your PSRAM issue:

Have you tried using an older version of the M5CoreS3 library? Sometimes newer versions can introduce compatibility issues. Double-check your board settings in the Arduino IDE. Make sure you've selected the correct board and PSRAM option. Try increasing the PSRAM size in your sketch if you're using a lot of memory. If possible, test with a different M5CoreS3 unit to rule out hardware issues. Consider posting your code snippet if the issue persists. Sometimes the problem can be in how the PSRAM is being accessed in the sketch.

Keep in mind that PSRAM errors can be tricky to debug.

This issue has been resolved in the latest version, see issue.

Hello @Fusion-Automate

have you tried any of the official M5CoreS3 examples? Do any of them work?

Edit: It looks like M5Stack moved M5CoreS3 to use M5Unified library - I've adapted my touch example. Thank you for reporting.

Thanks
Felix

This discussion will be continued below
https://github.com/m5stack/CoreMP135_buildroot-external-st/issues/2

@ajb2k3 Thanks, I got that now. I figured out, that I have selected the wrong server. Still my program is not showing anywhere.