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Can anybody definitively say if the "PiFace Digital 2" is compatible with the "Raspberry Pi Zero W rev 1.1" or not ?

I cannot find any Information on the web - besides a mention in a Book behind a paywall: https://subscription.packtpub.com/book/hardware_and_creative/9781786463852/7/ch07lvl1sec88/interfacing-the-piface-with-the-rpz

The error message i get from python is:

pifacedigitalio.core.NoPiFaceDigitalDetectedError: No PiFace Digital board detected (hardware_addr=0, bus=0, chip_select=0).

I've tried everything I could find on the web, including:

As @Dougie suggested:

 root@smoakpi:/home/pi# git clone https://github.com/piface/pifacecommon.git Cloning into 'pifacecommon'... remote: Enumerating objects: 12, done. remote: Counting objects: 100% (12/12), done. remote: Compressing objects: 100% (12/12), done. remote: Total 669 (delta 4), reused 3 (delta 0), pack-reused 657 Receiving objects: 100% (669/669), 304.56 KiB | 682.00 KiB/s, done. Resolving deltas: 100% (368/368), done. root@smoakpi:/home/pi# cd pifacecommon/ root@smoakpi:/home/pi/pifacecommon# python python python2 python2.7 python3 python3.7 python3.7m python3m root@smoakpi:/home/pi/pifacecommon# python setup.py install running install running build running build_py creating build creating build/lib.linux-armv6l-2.7 creating build/lib.linux-armv6l-2.7/pifacecommon copying pifacecommon/interrupts.py -> build/lib.linux-armv6l-2.7/pifacecommon copying pifacecommon/core.py -> build/lib.linux-armv6l-2.7/pifacecommon copying pifacecommon/spi.py -> build/lib.linux-armv6l-2.7/pifacecommon copying pifacecommon/asm_generic_ioctl.py -> build/lib.linux-armv6l-2.7/pifacecommon copying pifacecommon/mcp23s17.py -> build/lib.linux-armv6l-2.7/pifacecommon copying pifacecommon/__init__.py -> build/lib.linux-armv6l-2.7/pifacecommon copying pifacecommon/version.py -> build/lib.linux-armv6l-2.7/pifacecommon copying pifacecommon/linux_spi_spidev.py -> build/lib.linux-armv6l-2.7/pifacecommon running install_lib creating /usr/local/lib/python2.7/dist-packages/pifacecommon copying build/lib.linux-armv6l-2.7/pifacecommon/interrupts.py -> /usr/local/lib/python2.7/dist-packages/pifacecommon copying build/lib.linux-armv6l-2.7/pifacecommon/core.py -> /usr/local/lib/python2.7/dist-packages/pifacecommon copying build/lib.linux-armv6l-2.7/pifacecommon/spi.py -> /usr/local/lib/python2.7/dist-packages/pifacecommon copying build/lib.linux-armv6l-2.7/pifacecommon/asm_generic_ioctl.py -> /usr/local/lib/python2.7/dist-packages/pifacecommon copying build/lib.linux-armv6l-2.7/pifacecommon/mcp23s17.py -> /usr/local/lib/python2.7/dist-packages/pifacecommon copying build/lib.linux-armv6l-2.7/pifacecommon/__init__.py -> /usr/local/lib/python2.7/dist-packages/pifacecommon copying build/lib.linux-armv6l-2.7/pifacecommon/version.py -> /usr/local/lib/python2.7/dist-packages/pifacecommon copying build/lib.linux-armv6l-2.7/pifacecommon/linux_spi_spidev.py -> /usr/local/lib/python2.7/dist-packages/pifacecommon byte-compiling /usr/local/lib/python2.7/dist-packages/pifacecommon/interrupts.py to interrupts.pyc byte-compiling /usr/local/lib/python2.7/dist-packages/pifacecommon/core.py to core.pyc byte-compiling /usr/local/lib/python2.7/dist-packages/pifacecommon/spi.py to spi.pyc byte-compiling /usr/local/lib/python2.7/dist-packages/pifacecommon/asm_generic_ioctl.py to asm_generic_ioctl.pyc byte-compiling /usr/local/lib/python2.7/dist-packages/pifacecommon/mcp23s17.py to mcp23s17.pyc byte-compiling /usr/local/lib/python2.7/dist-packages/pifacecommon/__init__.py to __init__.pyc byte-compiling /usr/local/lib/python2.7/dist-packages/pifacecommon/version.py to version.pyc byte-compiling /usr/local/lib/python2.7/dist-packages/pifacecommon/linux_spi_spidev.py to linux_spi_spidev.pyc running install_egg_info Writing /usr/local/lib/python2.7/dist-packages/pifacecommon-4.2.2.egg-info root@smoakpi:/home/pi/pifacecommon# cd .. root@smoakpi:/home/pi# git clone https://github.com/piface/pifacedigitalio.git Cloning into 'pifacedigitalio'... remote: Enumerating objects: 756, done. remote: Total 756 (delta 0), reused 0 (delta 0), pack-reused 756 Receiving objects: 100% (756/756), 1.05 MiB | 856.00 KiB/s, done. Resolving deltas: 100% (372/372), done. root@smoakpi:/home/pi# cd pifacedigitalio/ root@smoakpi:/home/pi/pifacedigitalio# ls CHANGELOG COPYING docs examples MANIFEST.in pifacedigitalio README.md requirements.txt setup.py tests.py root@smoakpi:/home/pi/pifacedigitalio# python setup.py install running install running build running build_py creating build creating build/lib.linux-armv6l-2.7 creating build/lib.linux-armv6l-2.7/pifacedigitalio copying pifacedigitalio/core.py -> build/lib.linux-armv6l-2.7/pifacedigitalio copying pifacedigitalio/__init__.py -> build/lib.linux-armv6l-2.7/pifacedigitalio copying pifacedigitalio/version.py -> build/lib.linux-armv6l-2.7/pifacedigitalio running install_lib creating /usr/local/lib/python2.7/dist-packages/pifacedigitalio copying build/lib.linux-armv6l-2.7/pifacedigitalio/core.py -> /usr/local/lib/python2.7/dist-packages/pifacedigitalio copying build/lib.linux-armv6l-2.7/pifacedigitalio/__init__.py -> /usr/local/lib/python2.7/dist-packages/pifacedigitalio copying build/lib.linux-armv6l-2.7/pifacedigitalio/version.py -> /usr/local/lib/python2.7/dist-packages/pifacedigitalio byte-compiling /usr/local/lib/python2.7/dist-packages/pifacedigitalio/core.py to core.pyc byte-compiling /usr/local/lib/python2.7/dist-packages/pifacedigitalio/__init__.py to __init__.pyc byte-compiling /usr/local/lib/python2.7/dist-packages/pifacedigitalio/version.py to version.pyc running install_egg_info Writing /usr/local/lib/python2.7/dist-packages/pifacedigitalio-3.1.0.egg-info root@smoakpi:/home/pi/pifacedigitalio# python examples/blink.py Traceback (most recent call last): File "examples/blink.py", line 9, in pifacedigital = pifacedigitalio.PiFaceDigital() File "/usr/local/lib/python2.7/dist-packages/pifacedigitalio/core.py", line 82, in __init__ self.init_board() File "/usr/local/lib/python2.7/dist-packages/pifacedigitalio/core.py", line 107, in init_board h=self.hardware_addr, b=self.bus, c=self.chip_select)) pifacedigitalio.core.NoPiFaceDigitalDetectedError: No PiFace Digital board detected (hardware_addr=0, bus=0, chip_select=0).

Update:

Did that same as above on a Raspberry Pi 3b and it just worked - so there are two options - pi zero is not compatible or my pi zero is broken

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  • Error looks like jumper issue - anything else on the SPI bus? Maybe worth taking the 10 day trial to packt though the sample pages you can see using ‘next’ show connections direct to the Pi (gave up after 5 pages though). CPC state Compatible with Raspberry Pi 2 Model B, Raspberry Pi Model B+/A+ Commented Jun 19, 2020 at 20:46
  • It is compatible, but the software has to be cloned from github and installed manually. You'll need github.com/piface/pifacecommon and github.com/piface/pifacedigitalio Commented Jun 19, 2020 at 21:29
  • @Dougie sorry for the late reply - was moving and didn't have internet - i updated my post according to your suggestions. Commented Jun 24, 2020 at 18:52

1 Answer 1

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Yes it is compatible with the hardware -- it came out before the Pi Zero was created. The book also predates the Pi Zero.

PiFace Digital communicates over SPI, and I know you say it's enabled -- does /boot/config.txt have a line?

dtparam=spi=on

https://github.com/piface/pifacedigitalio/issues/39#issuecomment-633291166

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  • sorry for the late reply - i was moving and didn't have internet ;/ yes the line is really there: root@smoakpi:/home/pi# ls /dev/spi* /dev/spidev0.0 /dev/spidev0.1 root@smoakpi:/home/pi# grep "spi" /boot/config.txt dtparam=spi=on Commented Jun 24, 2020 at 16:32
  • it should work then, but I've not got a PiZero to hand to test on, will try and get one next week to confirm. Commented Jun 27, 2020 at 13:56
  • that would be great since i don't have another pi zero at hand and cannot tell if it's just broken Commented Jun 28, 2020 at 16:17
  • Sorry for the delay, I've got a PiZero but it didn't have header pins, so waiting to get those sorted Commented Jul 17, 2020 at 13:08

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