RPI4b Revision 7 not supported by HAL_PI_GIO

I now tried the given workaround and this works well with the unmodified HAL_PI_GPIO.

Thank you!

Unfortunately this workaround is not persistent, after a reboot the cpuinfo is reset by the system and the workaround has to be done again to make LCNC start.

 [attachment=54524 wrote: startlcnc.txt[/attachment]itsme post=275585 userid=28738"]Unfortunately this workaround is not persistent, after a reboot the cpuinfo is reset by the system and the workaround has to be done again to make LCNC start. 
 

While waiting for Andy to complete his precious work, download this file to the Raspberry then run the following commands:


and LinuxCNC will always start at the command:


P.S.  the system changed the file name by adding day and year. Once downloaded rename it startcnc.txt deleting the addition

Thank you for your suggestion! I have not tested it yet, but I assume it will not work as expected.
The tmp folder is purged on startup...

itsme wrote:

Thank you for your suggestion! I have not tested it yet, but I assume it will not work as expected.
The tmp folder is purged on startup...
 

Yes, indeed tmp folder is purged on startup.
And in fact the procedure copies the file on tmp every time before starting LinuxCNC ...  image missing /media/kunena/emoticons/wink.png

Ok, I miss the part where cpuinfo is changed...