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pimoroni / automation-hat

Python library and examples for the Pimoroni Automation HAT, pHAT and HAT Mini
https://shop.pimoroni.com/products/automation-hat
MIT License
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automation mini hat Remote I/O error #50

Closed wx4cb closed 2 years ago

wx4cb commented 2 years ago

I zsee the hat in i2cdetect, the screen gets some sort of "snow" pattern on the oled display, and then i get a remote i/o error

any help appreciated, brand new install, fresh pull from the github

charlesb@raspberrypi:~/Pimoroni/automationhat/examples/hat-mini $ i2cdetect -y 1
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                         -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- 48 -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
charlesb@raspberrypi:~/Pimoroni/automationhat/examples/hat-mini $ python3 analog.py
analog.py

This Automation HAT Mini example displays the three ADC
analog input voltages numerically and as bar charts.

Press CTRL+C to exit.

Traceback (most recent call last):
  File "/home/charlesb/Pimoroni/automationhat/examples/hat-mini/analog.py", line 70, in <module>
    reading = automationhat.analog[channel].read()
  File "/usr/local/lib/python3.9/dist-packages/automationhat/__init__.py", line 128, in read
    self._update()
  File "/usr/local/lib/python3.9/dist-packages/automationhat/__init__.py", line 132, in _update
    self.setup()
  File "/usr/local/lib/python3.9/dist-packages/automationhat/__init__.py", line 115, in setup
    setup()
  File "/usr/local/lib/python3.9/dist-packages/automationhat/__init__.py", line 376, in setup
    sn3218.enable()
  File "/usr/local/lib/python3.9/dist-packages/sn3218/__init__.py", line 133, in enable
    _get_sn3218().enable()
  File "/usr/local/lib/python3.9/dist-packages/sn3218/__init__.py", line 128, in _get_sn3218
    _sn3218 = SN3218()
  File "/usr/local/lib/python3.9/dist-packages/sn3218/__init__.py", line 34, in __init__
    self.enable_leds(enable_mask)
  File "/usr/local/lib/python3.9/dist-packages/sn3218/__init__.py", line 63, in enable_leds
    self.i2c.write_i2c_block_data(I2C_ADDRESS, CMD_ENABLE_LEDS, [
OSError: [Errno 121] Remote I/O error
charlesb@raspberrypi:~/Pimoroni/automationhat/examples/hat-mini $
Gadgetoid commented 2 years ago

How's the HAT connected? Pushed down firmly on the header?

Could there be any other software running/starting on boot that's interfering with the GPIO?

wx4cb commented 2 years ago

the hat is pushed down as far as it will go, nothing is running on there other than the hat (and alll the prerequeaisites re raspi-config has been done as per the instructions.

i've tried it on both a 4pi 4 and pi 3b on the latest release of raspberry pi os (buster or bullseye not sure which it is)

Gadgetoid commented 2 years ago

Just fired up on a Pi 4 with the latest 64bit Bullseye and it's working fine, so I suspect it's either a board fault or some kind of complicating factor/configuration issue I'm missing. I've asked the support team to cast their eyes over this and see if they have any ideas and we'll go from there.

wx4cb commented 2 years ago

great. the documentation on this thing is very lacking with regards to what addresses it uses etc. as you can see there is at least 1 i2c device on the bus, but i don't even know if that's the right one.

it could jsut be a dependency im missing, but i have installed everything as far as i know

Gadgetoid commented 2 years ago

That's the correct i2c address, I see the same thing:

pi@raspberrypi:~/Pimoroni/automationhat/examples/hat-mini $ sudo i2cdetect -y 1
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                         -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- 48 -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- --

Wait, hold on a minute - Automation HAT Mini does not have an SN3218 driver so the error you're getting is very odd indeed. Looks like your board is fine but some software weirdness has happened.

Gadgetoid commented 2 years ago

GOT IT! Managed to replicate. Working on a fix.

Gadgetoid commented 2 years ago

Totally my fault, sorry for the run-around here. Fix released. Update with:

python3 -m pip install --upgrade automationhat

That should get you up and running. :facepalm:

wx4cb commented 2 years ago

awesome. will take a look at it when i get home today