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canonical / matter-pi-gpio-commander

Matter Raspberry Pi GPIO Commander - Turn your Pi into a Matter lighting device!
Apache License 2.0
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Failed to open gpio chip on Ubuntu Core #67

Open jpm-canonical opened 5 months ago

jpm-canonical commented 5 months ago

Beta version of snap, following Wiki:

$ sudo snap install matter-pi-gpio-commander --beta
matter-pi-gpio-commander (beta) 2.0.0 from Canonical IoT Labs installed
$ sudo snap set matter-pi-gpio-commander gpio=4
$ sudo snap connect matter-pi-gpio-commander:gpio-memory-control
error: snap "matter-pi-gpio-commander" has no plug named "gpio-memory-control"
$ sudo matter-pi-gpio-commander.test-blink
GPIO: 4
GPIOCHIP: 0
Failed to open gpio chip: /dev/gpiochip0

Release version of snap following docs:

$ sudo snap remove matter-pi-gpio-commander --purge
matter-pi-gpio-commander removed
$ sudo snap install matter-pi-gpio-commander
matter-pi-gpio-commander 1.1.0 from Canonical IoT Labs installed
$ sudo snap set matter-pi-gpio-commander gpio=4
$ sudo snap connect matter-pi-gpio-commander:gpio-memory-control
$ sudo matter-pi-gpio-commander.test-blink
GPIO: 4
Oops: Unable to determine board revision from /proc/cpuinfo
 -> No "Hardware" line
 ->  You'd best google the error to find out why.

Beta version following #60 - these steps work on Ubuntu Server 24.04 on Raspberry Pi 5, but not when using Core 24:

$ sudo snap remove matter-pi-gpio-commander --purge
matter-pi-gpio-commander removed
$ sudo snap install matter-pi-gpio-commander --beta
matter-pi-gpio-commander (beta) 2.0.0 from Canonical IoT Labs installed
$ sudo snap set matter-pi-gpio-commander gpiochip=4
$ sudo matter-pi-gpio-commander.test-blink
Unset or empty environment variable: GPIO
$ sudo snap set matter-pi-gpio-commander gpio=4
$ sudo matter-pi-gpio-commander.test-blink
GPIO: 4
GPIOCHIP: 4
Failed to open gpio chip: /dev/gpiochip4

System info

$ ls /dev/gpio*
/dev/gpiochip0  /dev/gpiochip2  /dev/gpiochip4  /dev/gpiomem1  /dev/gpiomem3
/dev/gpiochip1  /dev/gpiochip3  /dev/gpiomem0   /dev/gpiomem2  /dev/gpiomem4
$ cat /proc/cpuinfo 
processor   : 0
BogoMIPS    : 108.00
Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm lrcpc dcpop asimddp
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x4
CPU part    : 0xd0b
CPU revision    : 1

processor   : 1
BogoMIPS    : 108.00
Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm lrcpc dcpop asimddp
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x4
CPU part    : 0xd0b
CPU revision    : 1

processor   : 2
BogoMIPS    : 108.00
Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm lrcpc dcpop asimddp
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x4
CPU part    : 0xd0b
CPU revision    : 1

processor   : 3
BogoMIPS    : 108.00
Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm lrcpc dcpop asimddp
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x4
CPU part    : 0xd0b
CPU revision    : 1

Revision    : d04170
Serial      : <redacted>
Model       : Raspberry Pi 5 Model B Rev 1.0
jpm-canonical commented 5 months ago

Manually connection for gpio worked:

$ sudo matter-pi-gpio-commander.test-blink
GPIO: 4
GPIOCHIP: 4
Failed to request output line.
Permission denied
$ sudo snap connect matter-pi-gpio-commander:custom-gpio matter-pi-gpio-commander:custom-gpio-dev 
$ sudo matter-pi-gpio-commander.test-blink
GPIO: 4
GPIOCHIP: 4
Setting GPIO 4 to Off
Setting GPIO 4 to On
Setting GPIO 4 to Off
Setting GPIO 4 to On
^C

Assertion file: https://pastebin.canonical.com/p/NpqPcyv3Jr/

farshidtz commented 3 months ago

The Custom GPIO interface doesn't auto connect on Ubuntu Core. See: https://forum.snapcraft.io/t/approval-and-auto-connection-for-custom-device-interface-on-matter-pi-gpio-commander/38891/7

The workaround, as mentioned, is to connect manually:

sudo snap connect matter-pi-gpio-commander:custom-gpio \
    matter-pi-gpio-commander:custom-gpio-dev
SecondSkoll commented 1 month ago

On Raspberry Pi 5, the custom-device plug is unavailable on the stable branch (v1.1.0) for both Ubuntu Server 24.04 and Ubuntu Core 24.

skoll@ubuntu:~$ sudo snap install matter-pi-gpio-commander
matter-pi-gpio-commander 1.1.0 from Canonical IoT Labs installed
skoll@ubuntu:~$ sudo snap connections matter-pi-gpio-commander
Interface            Plug                                          Slot           Notes
avahi-control        matter-pi-gpio-commander:avahi-control        -              -
bluez                matter-pi-gpio-commander:bluez                -              -
dbus                 matter-pi-gpio-commander:otbr-dbus-wpan0      -              -
gpio-memory-control  matter-pi-gpio-commander:gpio-memory-control  -              -
network              matter-pi-gpio-commander:network              :network       -
network-bind         matter-pi-gpio-commander:network-bind         :network-bind  -
skoll@ubuntu:~$ sudo snap connect matter-pi-gpio-commander:custom-gpio
error: snap "matter-pi-gpio-commander" has no plug named "custom-gpio"

This gave the same error as jpm's second example when triggering the test blink.

skoll@ubuntu:~$ sudo matter-pi-gpio-commander.test-blink
GPIO: 4
Oops: Unable to determine board revision from /proc/cpuinfo
 -> No "Hardware" line
 ->  You'd best google the error to find out why.

However, the --beta branch (v2.0.0) worked for me on server 24.04:

skoll@ubuntu:~$ sudo snap install matter-pi-gpio-commander --beta
matter-pi-gpio-commander (beta) 2.0.0 from Canonical IoT Labs installed
skoll@ubuntu:~$ sudo snap set matter-pi-gpio-commander gpio=4
skoll@ubuntu:~$ sudo snap set matter-pi-gpio-commander gpiochip=4
skoll@ubuntu:~$ sudo matter-pi-gpio-commander.test-blink
GPIO: 4
GPIOCHIP: 4
Setting GPIO 4 to Off
Setting GPIO 4 to On
Setting GPIO 4 to Off
Setting GPIO 4 to On
...

And the --beta branch (v2.0.0) worked for me on UC 24:

secondskoll@localhost:~$ sudo snap install matter-pi-gpio-commander --beta
matter-pi-gpio-commander (beta) 2.0.0 from Canonical IoT Labs installed
secondskoll@localhost:~$ sudo snap connections matter-pi-gpio-commander
Interface      Plug                                      Slot                                      Notes
avahi-control  matter-pi-gpio-commander:avahi-control    -                                         -
bluez          matter-pi-gpio-commander:bluez            -                                         -
custom-device  -                                         matter-pi-gpio-commander:custom-gpio-dev  -
custom-device  matter-pi-gpio-commander:custom-gpio      -                                         -
dbus           matter-pi-gpio-commander:otbr-dbus-wpan0  -                                         -
network        matter-pi-gpio-commander:network          :network                                  -
network-bind   matter-pi-gpio-commander:network-bind     :network-bind                             -
secondskoll@localhost:~$ sudo snap connect matter-pi-gpio-commander:custom-gpio \
                  matter-pi-gpio-commander:custom-gpio-dev
secondskoll@localhost:~$ sudo snap connections matter-pi-gpio-commander
Interface      Plug                                      Slot                                      Notes
avahi-control  matter-pi-gpio-commander:avahi-control    -                                         -
bluez          matter-pi-gpio-commander:bluez            -                                         -
custom-device  matter-pi-gpio-commander:custom-gpio      matter-pi-gpio-commander:custom-gpio-dev  manual
dbus           matter-pi-gpio-commander:otbr-dbus-wpan0  -                                         -
network        matter-pi-gpio-commander:network          :network                                  -
network-bind   matter-pi-gpio-commander:network-bind     :network-bind                             -
secondskoll@localhost:~$ sudo snap set matter-pi-gpio-commander gpio=4
secondskoll@localhost:~$ sudo snap set matter-pi-gpio-commander gpiochip=4
secondskoll@localhost:~$ sudo matter-pi-gpio-commander.test-blink
GPIO: 4
GPIOCHIP: 4
Setting GPIO 4 to Off
Setting GPIO 4 to On
Setting GPIO 4 to Off
Setting GPIO 4 to On
Setting GPIO 4 to Off
^C
farshidtz commented 1 month ago

I've just promoted 2.0+chip-v1.3.0.0 from candidate to stable. The custom-device interface should now be available on stable, but a manual connection is still required on Ubuntu Core.

SecondSkoll commented 1 month ago

I can confirm the current steps in the documentation now work as described on UC24.

secondskoll@localhost:~$ sudo snap remove matter-pi-gpio-commander --purge
matter-pi-gpio-commander removed
secondskoll@localhost:~$ sudo snap install matter-pi-gpio-commander
matter-pi-gpio-commander 2.0+chip-v1.3.0.0 from Canonical IoT Labs installed
secondskoll@localhost:~$ sudo snap set matter-pi-gpio-commander args="--passcode 1234"
secondskoll@localhost:~$ sudo snap connect matter-pi-gpio-commander:custom-gpio \
                  matter-pi-gpio-commander:custom-gpio-dev
secondskoll@localhost:~$ sudo snap set matter-pi-gpio-commander gpio=4
secondskoll@localhost:~$ sudo snap set matter-pi-gpio-commander gpiochip=4
secondskoll@localhost:~$ sudo matter-pi-gpio-commander.test-blink
GPIO: 4
GPIOCHIP: 4
Setting GPIO 4 to Off
Setting GPIO 4 to On
Setting GPIO 4 to Off
Setting GPIO 4 to On
Setting GPIO 4 to Off
Setting GPIO 4 to On
^C