pigpiod not working on Raspberry 400

[ilguargua]

`pi@raspberrypi:~ $ cat /etc/issue
Raspbian GNU/Linux 10 \n \l

pi@raspberrypi:~ $ pigpiod -v
71
pi@raspberrypi:~ $ sudo pigpiod
2020-11-30 09:01:41 initCheckPermitted:
+---------------------------------------------------------+
|Sorry, this system does not appear to be a raspberry pi. |
|aborting. |
+---------------------------------------------------------+

Can't initialise pigpio library
pi@raspberrypi:~ $
`
The system is regulary update and upgraded, I don't know what else I could try.

Thank you,

Ale.

[joan2937]

Could you let us know the result of the following command.

od -x /proc/device-tree/system/linux,revision

On a PiB+

0000000 0000 1000
0000004

On a Pi4B

0000000 a000 1131
0000004

[joan2937]

For information a Pi 400 returns

0000000 c000 3031
0000004

https://www.raspberrypi.org/forums/viewtopic.php?f=33&t=292890#p1770396

[guymcswain]

So we need to update the 'initialise' function. I can patch this in develop branch for testing.
Edit: gpioHardwareRevision()
@ilguargua , how did you install to get pigpio v71?

[joan2937]

@guymcswain I don't understand why 00c0 3130 (from c000 3031) wouldn't be detected as a BCM2711 and work. Am I being silly?

[guymcswain]

@joan2937 , no between old, new revision codes and LE vs BE it gets confusing. I'm starting to dig through it again to understand it myself.

[guymcswain]

@ilguargua , please show the output from this command:

grep Revision /proc/cpuinfo

Also, this command may provide some useful debug information:

sudo pigpiod -c4 -g 2>&1 | grep gpioHardwareRevision

[ilguargua]

Hi guys,
thanks for all propmt replays.
I don't have my 400 with me right now (I left it at work), so I'll let you know tomorrow morning (21:22 pm now here)

Thank you again for support,

Cheers, Ale.

[ilguargua]

@guymcswain : pigpio was installed with the Raspian (full version) that came with pi, after been regulary updated.

Ciao, Ale.

[ilguargua]

@guymcswain :
`pi@raspberrypi:~ $ grep Revision /proc/cpuinfo
Revision : c03130

pi@raspberrypi:~ $ sudo pigpiod -c4 -g 2>&1 | grep gpioHardwareRevision
2020-12-01 07:41:55 gpioHardwareRevision:

pi@raspberrypi:~ $
`
Thank you for your support, let me know if you need something else.

Ciao, Ale.

[guymcswain]

Scratching my head ... I was expecting several output lines from the second grep command.

The output from /proc/cpuinfo looks good, ie, pigpio should have detected this as a valid raspberrypi.

[guymcswain]

@ilguargua ,
The logic to detect hardware revision was updated since v74. Please update your pigpio version from v71 to the latest v78 as follows:

wget https://github.com/joan2937/pigpio/archive/master.zip
unzip master.zip
cd pigpio-master
make
sudo make install

If the Python part of the install fails it may be because you need the setup tools.

sudo apt install python-setuptools python3-setuptools

[ilguargua]

@guymcswain ,
I'try your solution ASAP. I'm wondering if I should first unistall the existing version of pigpio, or no problem to leave it alone?

Thank you again for help, I'll let you know soon how is gone.

Ciao, Ale.

[ilguargua]

@guymcswain ,
everything works!!
I first launch : sudo apt-get remove pigpio pigpiod pigpio-tools , followed by your instruction.
We should strongly suggest to the Raspian people to update the repository version, since is proved not working on Raspy 400.

Thanks a lot to eveyone, should now this issue be closed?

Ciao, Ale.

[guymcswain]

Thanks for your help.

We should strongly suggest to the Raspian people to update the repository version, since is proved not working on Raspy 400

I think this got a lot of attention on the raspberrypi.org forum.