Remora on Octopus

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29 Oct 2022 12:13 #255370 by Totalis
Remora on Octopus was created by Totalis
Hi All,

I am looking to move away from the parallel port machines with limited IO and on to something more capable.  I found out about Remora and had a spare BTT Octopus board laying around so I thought I would give it a try.

I have managed to install the appropriate OS, download and compile the Remora component from Git, upload the firmware using the SD card and then checking with DFU mode, and wire up everything correctly.  

I have got a basic config.txt on the SD card, which is a very simple 3-axis config, and now I am trying run LinuxCNC itself.  No luck.  I am getting a "Bad SPI payload" error within LinuxCNC and a "Communication data error" within the UART terminal.

So what can I do next?  I have an oscilloscope (Not used it yet), I can upload any files as appropriate, any advice is greatly appreciated.

Thanks

Greg

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30 Oct 2022 09:03 #255427 by Aaroncnc
Replied by Aaroncnc on topic Remora on Octopus
Did you enable spi in the rpi image. It is off by default on some I believe.

Also connect the serial debug port from your board to the rpi and see what it says after a power cycle.

Keep your spi lines relatively short so they don't pick up too much noise

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30 Oct 2022 15:20 #255444 by cakeslob
Replied by cakeslob on topic Remora on Octopus
It is important you uploaded the correct firmware for the chip. There are 4 different octopus with 3 different chips.
remora-docs.readthedocs.io/en/latest/har...#firmware-and-config

Double check your firmware/chip version, and do the things aaron said, and let us know if that works

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02 Nov 2022 15:59 #255795 by sinneD
Replied by sinneD on topic Remora on Octopus
Did you make any headway on this?
I am looking to do the same.

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19 Feb 2024 18:06 #293775 by Totalis
Replied by Totalis on topic Remora on Octopus
I have finally found the time to get back to this project. I have got Remora working on the LinuxCNC/Raspi side of things. I can verify that the SPI communication is being initiated but nothing is coming back from the BTT Octopus Board.

I can reprogram the board using a STLink programmer but the board reports that it cannot execute and hangs in a Halt state. I will probably try another board to see if I can make this work. Any advice/things to try would be greatly appreciated

Greg

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19 Feb 2024 20:33 #293787 by cakeslob
Replied by cakeslob on topic Remora on Octopus
Double check your firmware/chip version, which version are you using?

remora-docs.readthedocs.io/en/latest/hardware/SPI/octopus.html
make sure connections are like it says in the manual. , spi connections should be short, under 100mm if possible


Stuff was upgraded since the last time you where here, the older version had bootloader issues, which have been fixed now if you are using the F446 version. if you no longer have the bootloader, i suggest re-loading the bootloader and reloading the newer firmware
-Double check your firmware/chip version

github.com/bigtreetech/BIGTREETECH-OCTOP...ootloader/bootloader

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