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Now I get an error message on "hm2_7c81.0.7i76.0.0.output-00" that this pin doesn't exist.
it works on the 5i25 board and the 7i76e board.
hm2_5i25.0.7i76.0.0.output-00
hm2_7i76e.0.7i76.0.0.output-00

Any suggestions?

OK so it either did not work or you rebooted between
running:

sudo ethtool -C enp0s25 rx-usecs 0

and

sudo ethtool -c enp0s25

 

Possibly the executable path is different for root so ethtool is not found unless you use sudo

so maybe try:

sudo ethtool -c enp0s25

to see if IRQ coalescing is disabled

I dont think IRQ coalescing is disabled I still get the error every time. How do I disable IRQ coalescing permanently?
   

No, just incorrect reading of the name of the driver.

I guess the correct load line should read:
loadrt hm2_rpspi config="num_encoders=0 num_pwmgens=0 num_stepgens=3 sserial_port_0=0xxxxx"

Thanks.

Typo?

it should be hm2_rpspi

I did:
sudo mesaflash --device 7c81 --spi --addr /dev/spidev0.0 --write 7c81_7i76x2d.bit
and
sudo mesaflash --device 7c81 --spi --addr /dev/spidev0.0 --reload
when I tried to run linuxcnc I got an error about no hm2_rspi.so found.
How do I make sure hm2_rspi is on my system?

That should about do it as long as you have 7C81+7I76 firmware installed on the 7C81

After about a year, I am back to trying to get this to work. I have updated to Bookworm.
I enable spi in config.
I have been able to talk to the 7c81/7i76 with mesaflash.
I edited my 7i76e hal file replacing 7i76e with 7c81.
When I tried to start linuxcnc I got an error associated with this line:
loadrt hm2_eth board_ip="10.10.10.10" config="num_encoders=0 num_pwmgens=0 num_stepgens=3 sserial_port_0=0xxxxx"
I assume I need to replace hm2_eth with hm2_rspi and take out the board_ip="10.10.10.10"
Anything else I need to do?
Thanks in advance,
Alan

Thank you for you kind reply and offer, no worries , the error is on my side not being up to date, you are all busy enough.

I had a 7i76e.pncconf file which I was able to open with pncconf and my settings were there at least seems ok for the default machine.

I was using a xbox controller, a two button crane control with emergency stop and the laser was with a M7 command- button set to the mist hal output.

I will read the documentation and hopefully get all working with the qtplasmac machine setup again.
I assume the additional config is the same, custom hal etc.

thank you
Roman

 

The lack of yellow (100BT) LED illuminated the RJ45
suggests a problem with the 7I76E Ethernet interface
or the host Ethernet interface.

I would try a known working  Ethernet connection, and if you
do not get both Green (activity) and Yellow (100BT) LEDs
illuminated on the 7I76E RJ45 connection, I would return the
7I76E  for warranty repair. Note that especially for plasma systems
it's important to ground the frame ground connection on the 7I76E.

Can you check if get any LEDs illuminated on the 7I76E RJ45 connector
with the Ethernet cable unplugged?
 

Could be cabling problem but the "ip a" report shows
the link as up,  could also a be a host PC issue, or be a
7I76E issue.

What do the LEDs on the 7I76E RJ45 connector show?

 

You would need to

ping 10.10.10.10

To check connectivity to the 7I76E