[HELP] WaveshareV4 not drawing on PI 02W (Device Busy)

aalejandrofer commented 7 months ago

Hardware

Pi Zero 2 W
Waveshare 2.13inch e-Paper HAT v4

Describe the bug Device Busy

I have tested the screen on a pi4b and the image draws.
[Not Tested] I have heard that it has something to do with the screen being connected using the headers instead of wired. I want to avoid wiring it.

More Info

ls /dev/spi* 
> /dev/spidev0.0  /dev/spidev0.1

pwd
> /home/pi/e-Paper/RaspberryPi_JetsonNano/python/examples

python3 epd_2in13_V3_test.py
> INFO:root:epd2in13_V3 Demo
INFO:root:init and Clear
DEBUG:waveshare_epd.epd2in13_V3:e-Paper busy

python3 epd_2in13_V4_test.py
>INFO:root:epd2in13_V4 Demo
INFO:root:init and Clear
DEBUG:waveshare_epd.epd2in13_V4:e-Paper busy

I have tested with waveshare_3 but the same

shhds commented 6 months ago

I use the example code for testing is all right, you use the latest example code to see Do you have other SPI devices using SPI at the same time

UnhappyCodings commented 5 months ago

Hi! Im experiencing the same problem, V4 and V2 wont work at all on my 2.9inch EPaper module

I also can only epd2in9d and epd2in9b_V3 get to work on it. Im using an Teensy 4.0 together with the Arduino IDE 2.3.2

UnhappyCodings commented 5 months ago

Also seems like almost every library which includes "paint" does not work on my device

waveshareteam / e-Paper

[HELP] WaveshareV4 not drawing on PI 02W (Device Busy) #334