Remora - Rpi Software Stepping Using External Microcontroller via SPI

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29 Apr 2023 16:18 - 29 Apr 2023 20:58 #270218 by meister
I like the Remora-Project.
At the moment, i try to port the SPI-Version to an ICE40-FPGA with Opensource-Toolchain.
Only Just for Fun and to refresh my FPGA-Skill's.


EDIT: can not get it to run :(
Last edit: 29 Apr 2023 20:58 by meister.
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29 Apr 2023 22:14 #270245 by 3DPandME
Just dropping in to say hi to Cakeslob and let him know I'm looking forward to seeing progress on the linuxCNC front with regular 3d printer control boards!

In particular I am hoping to use the Spider King board!
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29 Apr 2023 23:46 #270265 by scotta

This is shipping now for ~$18, Rpi2040 with Ethernet: docs.wiznet.io/Product/iEthernet/W6100/w6100-evb-pico

linuxgizmos.com/wiznet-board-features-ra...net-controller-chip/

Bari, I could not help myself. A W5500 version on the way. A RP2040 Remora port will help keep me busy during the weekends whilst travelling for work for 3 weeks.
The following user(s) said Thank You: tommylight

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30 Apr 2023 20:02 - 30 Apr 2023 20:03 #270333 by meister
My ICE40 "Port" works :)
Not good, getting join errors if i move too fast, but i can move my stepper <3
Last edit: 30 Apr 2023 20:03 by meister.

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30 Apr 2023 21:32 #270341 by scotta
Cool, which board are you using?

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01 May 2023 07:16 #270383 by meister
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04 May 2023 21:11 #270673 by meister
PWM and closed loop now also works on my ICE40,

but i'm afraid i'm running out of logic cells,
I also don't use an IP-Core like Mesa but pure logic in Verilog.

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04 May 2023 23:04 #270686 by cakeslob
lookin good. I am wondering the advantage of using remora over hostmot2. I can assume it smaller in size? hm2 would already be a little too big for the ice40 right? 

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05 May 2023 07:27 #270705 by meister
the ice40 i had lying around at home and i felt like playing with it :)
otherwise there is no reason for it, neither cheaper nor better.
ok, i can do everything in logic without an IP core but is that an advantage ?

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