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Raspberry Pi doesn't use grub
Resolution is a issue with this image
You may have to enable sound see
www.raspberrypi.com/documentation/computers/config_txt.html

Hello.
I'm newbie linux and RPi5.
I did the connection with the Mesa card.
I also have a 10.1" IPS Touch display with resolution 1920x1200 @60 Hz + audio speakers.
But there is no sound, the resolution is only 1920x1080, no possibility to rotate the screen and can't find the grub (/etc/default/grub in sudo nano says it's a new file).

I'm hoping for your help.
www.instagram.com/xenon.alien/p/C5MV-g3IsBh/?img_index=1

Thanks for the reply !!

I did sudo apt update and upgrade.

Hi Rod, I was hoping for your reply since I followed your steps for installing Ethercat. I have successfully installed and able to detect slaves as well.

Also I have created udev rule so that I don't have to give permission everytime, but everytime I reboot or start rpi4 "/dev/EtherCAT0" vanishes !!

I have found solution from the last post of "Ethercat installation from repositories":
root@raspberrypi:~# /usr/sbin/ethercatctl stop
rmmod: ERROR: Module ec_master is in use by: ec_genet
root@raspberrypi:~# rmmod ec_genet
root@raspberrypi:~# /usr/sbin/ethercatctl stop
root@raspberrypi:~# /usr/sbin/ethercatctl start

After following this commands I am able to see "/dev/EtherCAT0", can you please help me with this so that I don't have to follow above commands?

Thanks !!

The RPi4 spi driver doesn't use the spidev device, it's not quite up to realtime usage. Linuxcnc unloads the driver used by the RPi4 and use it's own driver.

Here's some info
linuxcnc.org/docs/stable/html/man/man9/h...#SPI%20CLOCK%20RATES

Hello, looking at the SPI speed between the Pi and a Mesa 7C80 host, Bookworm 12 iso.  The manual has little to say about SPI speed:  www.raspberrypi.com/documentation/comput...erry-pi.html#speed-2

If the `xxd` tool is added, this can be run to see the current speed:  xxd -pd /sys/class/spidev/spidev0.0/device/of_node/spi-max-frequency
In my case it returns 0x07735940 which is 125MHz.  Seems pretty fast already.

Is the SPI speed solely controlled by the app, or can we tweak it somehow?

E: Unable to locate package linux-headers-4.19.71-rt24-v7l
E: Couldn't find any package by glob 'linux-headers-4.19.71-rt24-v7l'
E: Couldn't find any package by regex 'linux-headers-4.19.71-rt24-v7l'

I want to install etherlab master on raspberry pi while installing get above errors please provide any solutions for Above errors
 

Yes, any that has simple buffers and not optos on the outputs should work
The pinout is for this very common BOB:

www.forum.linuxcnc.org/media/kunena/atta...it-408-1000x1000.jpg

But almost any should work.


 

PCW wrote:

7I96S firmware with P1 pinout for the common "Mach 5 Axis BOB"
2 additional step/dir channels (7 total) and 4 RCPWMgens on the BOB

 

Would any inexpensive aka chinese "BOB" work? 
 

Tried to satisfy the grisly requirement of old Bullseye build `python << 3.8` to update 2.9.0; gave up, moved back to new Bookworm build.  

On current Bookworm, `config.txt` was in /boot/broadcom, enabled `dtparam=spi=on` and that seems to work, thank you.  Was then able to complete upgrading `linuxcnc-uspace (1:2.9.2) over (1:2.9.1)` successfully.  

Any chance we can try to get VNC working on it?  Not for everyday use; just for setup and configuration.  It would be much easier to work on the config from a workstation rather than the touchscreen. www.waveshare.com/product/raspberry-pi/d...5.6inch-hdmi-lcd.htm

7I96S firmware with P1 pinout for the common "Mach 5 Axis BOB"
2 additional step/dir channels (7 total) and 4 RCPWMgens on the BOB

 
 

PCW wrote:

Mesa firmware includes a specific PWMgen for RC servos: RCPWMGen.

This can be added to any Mesa FPGA card. Standard PWMgens tend
to have low resolution when used for RC servos as the full scale
duty cycle of RC servos is quite low ( a few %)
 

In my case even low res motion is better than stop to stop action. Out of curiosity what physical pins on a 7i96 would drive the RC servo. 

Mesa firmware includes a specific PWMgen for RC servos: RCPWMGen.

This can be added to any Mesa FPGA card. Standard PWMgens tend
to have low resolution when used for RC servos as the full scale
duty cycle of RC servos is quite low ( a few %)

PCW wrote:

A 7I92TH/TF and a couple Mach 5 Axis BOBs could do this
(or even without the BOBs if you are careful...)
 

Crazy idea, what is the frequency of the spindle PWM signal on a 7i96 card?  Can I co-op that to drive a RC servo.  Or use a spare output and pulse at 50 Hz? Can the I/O handle that kind of duty cycle toggling?

Yes, pulling the SD card, should also work for me.
Thanks

www.makeuseof.com/tag/enable-spi-i2c-raspberry-pi/