inky: Inky Impression - EEPROM Error

I wondered if anyone might have some ideas on this problem?

I have the inky impression 5.7" display and I can’t get it to work. I have it hooked up to a pi zero w, ran the installer script from the pimoroni website, and I get this below. EEPROM error sounds like it could be a faulty unit to me, but I don’t have a good way of proving otherwise.

pi@rp-mini-phat:~/Pimoroni/inky/examples $ sudo python3 clean.py 
Inky pHAT: Clean

Displays solid blocks of red, black, and white to clean the Inky pHAT
display of any ghosting.


Detected 7-Colour (UC8159)
Traceback (most recent call last):
  File "/home/pi/Pimoroni/inky/examples/clean.py", line 17, in <module>
    inky_display = auto(ask_user=True, verbose=True)
  File "/usr/local/lib/python3.9/dist-packages/inky/auto.py", line 24, in auto
    return InkyUC8159()
  File "/usr/local/lib/python3.9/dist-packages/inky/inky_uc8159.py", line 144, in __init__
    eeprom_resolution = _RESOLUTION.keys[self.eeprom.display_variant - 14]
TypeError: 'builtin_function_or_method' object is not subscriptable
pi@rp-mini-phat:~/Pimoroni/inky/examples $

… and the system Diag


pi@rp-mini-phat:~/Pimoroni/inky/examples $ uname -a
Linux rp-mini-phat 5.10.63+ #1459 Wed Oct 6 16:40:27 BST 2021 armv6l GNU/Linux
pi@rp-mini-phat:~/Pimoroni/inky/examples $ cat /etc/os-release 
PRETTY_NAME="Raspbian GNU/Linux 11 (bullseye)"
NAME="Raspbian GNU/Linux"
VERSION_ID="11"
VERSION="11 (bullseye)"
VERSION_CODENAME=bullseye
ID=raspbian
ID_LIKE=debian
HOME_URL="http://www.raspbian.org/"
SUPPORT_URL="http://www.raspbian.org/RaspbianForums"
BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs"
pi@rp-mini-phat:~/Pimoroni/inky/examples $

About this issue

Original URL
State: closed
Created 3 years ago
Comments: 24 (7 by maintainers)

Commits related to this issue

U8159: Longer busy timeout from #136 — committed to pimoroni/inky by Gadgetoid 3 years ago

Most upvoted comments

… which I’ve now sorted out. Just changed the timeout to 60s. Happy Holidays!

Nice - that worked - Thank you for the suggestion; the display now works!

… now the next problem I’m getting is a timeout waiting for the busy signal to clear…time to go and ferret around in the library!

etected 7-Colour (UC8159)
Traceback (most recent call last):
  File "/home/pi/Pimoroni/inky/examples/name-badge.py", line 107, in <module>
    inky_display.show()
  File "/usr/local/lib/python3.9/dist-packages/inky/inky_uc8159.py", line 365, in show
    self._update(buf.astype('uint8').tolist(), busy_wait=busy_wait)
  File "/usr/local/lib/python3.9/dist-packages/inky/inky_uc8159.py", line 329, in _update
    self._busy_wait()
  File "/usr/local/lib/python3.9/dist-packages/inky/inky_uc8159.py", line 309, in _busy_wait
    raise RuntimeError("Timeout waiting for busy signal to clear.")
RuntimeError: Timeout waiting for busy signal to clear.

phatmanace on Dec 24, 2021

You’re going to laugh (I hope). I went back and looked to see whether I2C and SPI were enabled on the Pi. I2C was not; SPI was. Once I enabled I2C, everything started working.

Now I just need to find a good slideshow program to use with this thing. 😃

Thanks for the help!

pdsavas on Jan 15, 2022

Glad that sorted things temporarily!

Leaving this issue open as we still need to fix it properly (also the lurking busy_wait issues)

helgibbons on Dec 24, 2021