Remora - Rpi Software Stepping Using External Microcontroller via SPI

I apologize for not clarifying my points.
My current setup on the lathe has raspberry pi 4B+ 2 GB.
Elovalvo 64 bit image.
All I/O on direct GPIO's.
i.e: Input/outputs, Steppers X&Z. Spindle PWM with Encoders PHASE-A & Index.
I am curious and eager to use Remora. especially with PC over ethernet. Once it is finalized by Dev!

It might be a while before ethernet becomes ready, but I am running a similar configuration with RPI + Nucleo board without any issues. I think you would find regular remora to be a good improvement over the direct GPIO of RPI. You can set it up to run with SPI cable for now and it will be an easy conversion to ethernet later.

Woo big thanks to Cakeslob! He has helped me get things running over the last few evenings.

it's only a minor step forward but we have remora running on the spider king board with the 2209 drivers!

First steps here 
www.instagram.com/reel/CvtuImJNCla/?igshid=MzRlODBiNWFlZA==

      Hello Cakeslob,
I have used Bluepill STM32F103. Compiled and uploaded .bin file.
Estop working, but machine on remains on for 2-3 sec. then it is automatically off.
I have attached my board.config, pin connections,....        file for your kind perusal.
I can't figure out what I have done wrong.

Hey Viren, thanks for checking out the Bluepill firmware, Im still in testing with the bluepill, but have a look at the updated repo. The issue I think was the basethread PRU was too high for the 103. I added a section to the boardconfig to include the basethread, as well as a few other parts.
github.com/cakeslob/Remora/blob/nucleo_s...L/board_config.h#L46

and add this portion to your hal file. 80000 was too high for the bluepill, i am testing it around 30000 to 40000

github.com/cakeslob/Remora/blob/nucleo_s...uc/remora-xyz.hal#L9

Try to play around with the basethread frequency in the config/hal, you may need to change the remora.c file to go lower than default
github.com/cakeslob/Remora/blob/nucleo_s...Remora/remora.c#L218


but viren, I regret to inform you, but the Bluepill F103 does not support the highspeed encoder. I plan to test next with the Blackpill F401/411 which should support highspeed encoder, but they have not arrived yet.

You can try and configure your spindle with the normal encoder module, but I am not sure.

github.com/cakeslob/Remora/blob/nucleo_s...L/board_config.h#L53

I have managed to run my config on RPI 3B+.
My real machine is on RPI-4B. As I am addicted to Gmoccapy. So I shifted the working config to RPI-4(Physical machine).
Now the strange thing happening,
E-stop outs, so our SPI working. But jog on Either X or Z throughs Joint-0/1 error.
The same config works flawlessly on RPI 3B+.
What we have to change in config.
​​​​​​​
     

I dont know what would cause it to not work on the RPI4 vs the RPI3,

A couple things you can check though

- Does it work with AXIS on rpi4?

- Did you install the same component version as you did on RPI3?
If you are using the nucleo version, use the comp in that repo. The nucleo version uses a different linuxcnc component than main remora,

Hi Cakeslob,
Yes I have used your static config.
Same remora.c from your repository.

Hmm ok, as long as its this comp for nucleo boards, what ever repo you get the firmware, use that component
github.com/cakeslob/Remora/tree/nucleo_s...NC/Components/Remora

Hmm on second thought, it could be this,
In your hal file in the loadrt remora try adding this

I have the nucleo 446 running at a higher base thread in the firmware, so the linuxcnc side component needs to match.


I dont have an RPI3, Ive been using RPI4. I can recommend you try this image if it still doesnt work
github.com/Expatria-Technologies/remora-flexi-hal/releases

Viren, I would like to use a trimmed down version of your lathe configuration as one of the provided sample config. I hope this is ok.

Also, can you post a file with threading?
I am working on my tiny remora lathe, but I dont know how to set it up or how to use a cnc lathe. I was hoping I can copy most of your config file and also use it as a sample hal file for the remora project.
I hope this is alright with you.