M5Paper Canvas not working in Arduino IDE

Zontex

@powersoft have you tried any of the built in examples in the M5Paper library?

sambartle

Did you make any progress on this?

The "HelloWorld.ino" example from M5EPD which I believe is very similar to the one above.. does not work either..

#include <M5EPD.h>

M5EPD_Canvas canvas(&M5.EPD);

void setup()
{
    M5.begin();
    M5.EPD.SetRotation(90);
    M5.EPD.Clear(true);
    M5.RTC.begin();
    canvas.createCanvas(540, 960);
    canvas.setTextSize(3);
    canvas.drawString("Hello World", 45, 350);
    canvas.pushCanvas(0,0,UPDATE_MODE_DU4);
}

void loop()
{

}

Produces a blank page when rendered.

sambartle

The problem including in some of the built in examples (HelloWorld.ino) seems to be related to the canvas size.. in the Hello World example it creates a 540x960 canvas (which is the resolution of the display)

If you drop that down to 540x400.. it works fine.. Is there not enough RAM to create a canvas the size of the display maybe?

sambartle

To go full circle and solve the issue... Are you using platformio rather than arduino?

You need to add:

# Name,   Type, SubType, Offset,  Size, Flags
nvs,      data, nvs,     0x9000,  0x5000,
otadata,  data, ota,     0xe000,  0x2000,
app0,     app,  ota_0,   0x10000, 0x640000,
app1,     app,  ota_1,   0x650000,0x640000,
spiffs,   data, spiffs,  0xc90000,0x370000,

in a new file "default_16MB.csv" in the same folder as platformio.ini, and modify platformio.ini to add:

board_build.partitions = default_16MB.csv
build_flags = 
	-DCORE_DEBUG_LEVEL=4
	-DBOARD_HAS_PSRAM
	-mfix-esp32-psram-cache-issue

Which fixes the RAM issue and allows using the full size canvas.

Powersoft

@sambartle
Yes, all is working fine. When I was srated i dont find the M5Paper. After installing all m5stack elements I had the posibility tp choose th M5Paper, snd all examples running well!

Zontex

@powersoft glad you got it sorted out :)

entrusc

@sambartle I struggled for a few hours now to find out why the display is not showing anything ... then I found your response here. Now it works flawlessly - thanks a lot!

M5 folks: you might want to add that to your library's README on GitHub - I can't be the only one who wants to use platformio for developing software for the M5 Paper.

mattp

Is there a fix for arduino IDE as well? Having the exact same issue with the canvas size on latest arduino IDE. Or did I use the wrong board configuration? (Using M5Stack-Core-ESP32 because there is no dedicated M5Paper board config)

mattp

Is there a working solution for the Arduino IDE as well?
Also: is there an official board configuration available yet? I only find M5Core, M5Stick C,... but none for the M5Paper

ajb2k3

@mattp reupdate arduino libs and board definations as there is a M5paper option now under boards.

Powersoft

@mattp
Hello, found the solution into this video frome LUKE

“M5Paper Seasons Greetings Display” on youtube.

He describe how to load the definitions of the m5stack boards.

This video was verry helpfull for me😮

mattp

@powersoft, @ajb2k3
Thank you both for your answers.
The board manager url found on https://docs.m5stack.com/#/en/arduino/arduino_development is apparently the old one and still does not contain the M5Paper board, but through the youtube video powersoft recommended I was able to find the correct url and everything works now as expected :)