Buttons work, but 5.7" e-paper display doesn't (UserWarning: Busy Wait: Held high. Waiting for 1.00s)

[edubsky]

Hi,

I'm trying to get my inky impression 5.7" to work. I can get the buttons.py script to work - detected when the A, B, C & D buttons are pressed, but I can't get any of the other example scripts to work which should update the display itself.

My setup:
Raspberry Pi Zero W
Operating System: Raspbian GNU/Linux 12 (bookworm)
Kernel: Linux 6.12.47+rpt-rpi-v6
Architecture: arm

Inky 600x448 pixels 5.7" e-paper display

Error message:

(pimoroni) eoin@pi:~/Pimoroni/inky/examples/7color $ python clear.py
Detected 7-Colour (UC8159)
/home/eoin/.virtualenvs/pimoroni/lib/python3.11/site-packages/inky/inky_uc8159.py:331: UserWarning: Busy Wait: Held high. Waiting for 1.00s
  warnings.warn(f"Busy Wait: Held high. Waiting for {timeout:0.2f}s")
/home/eoin/.virtualenvs/pimoroni/lib/python3.11/site-packages/inky/inky_uc8159.py:331: UserWarning: Busy Wait: Held high. Waiting for 0.20s
  warnings.warn(f"Busy Wait: Held high. Waiting for {timeout:0.2f}s")
/home/eoin/.virtualenvs/pimoroni/lib/python3.11/site-packages/inky/inky_uc8159.py:337: UserWarning: Busy Wait: Timed out after 0.20s
  warnings.warn(f"Busy Wait: Timed out after {timeout:0.2f}s")

The clear.py script is simply:

#!/usr/bin/env python3

import time

from inky.auto import auto
from inky.inky_uc8159 import CLEAN

inky = auto(ask_user=True, verbose=True)

for _ in range(2):
    for y in range(inky.height - 1):
        for x in range(inky.width - 1):
            inky.set_pixel(x, y, CLEAN)

    inky.show()
    time.sleep(1.0)