Remora - Rpi Software Stepping Using External Microcontroller via SPI

meister
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29 Apr 2023 16:18 - 29 Apr 2023 20:58 #270218 by meister

Replied by meister on topic Remora - Rpi Software Stepping Using External Microcontroller via SPI

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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3DPandME
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29 Apr 2023 22:14 #270245 by 3DPandME

Replied by 3DPandME on topic Remora - Rpi Software Stepping Using External Microcontroller via SPI

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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scotta
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29 Apr 2023 23:46 #270265 by scotta

Replied by scotta on topic Remora - Rpi Software Stepping Using External Microcontroller via SPI

Bari wrote:
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.

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meister
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30 Apr 2023 20:02 - 30 Apr 2023 20:03 #270333 by meister

Replied by meister on topic Remora - Rpi Software Stepping Using External Microcontroller via SPI

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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scotta
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30 Apr 2023 21:32 #270341 by scotta

Replied by scotta on topic Remora - Rpi Software Stepping Using External Microcontroller via SPI

Cool, which board are you using?

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meister
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01 May 2023 07:16 #270383 by meister

Replied by meister on topic Remora - Rpi Software Stepping Using External Microcontroller via SPI

Board: www.olimex.com/Products/FPGA/iCE40/iCE40...open-source-hardware
Toolchain: clifford.at/icestorm
Lang: Verilog

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meister
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01 May 2023 11:49 #270403 by meister

Replied by meister on topic Remora - Rpi Software Stepping Using External Microcontroller via SPI

www.youtube.com/shorts/m4zXuHERiFU

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meister
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04 May 2023 21:11 #270673 by meister

Replied by meister on topic Remora - Rpi Software Stepping Using External Microcontroller via SPI

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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cakeslob
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04 May 2023 23:04 #270686 by cakeslob

Replied by cakeslob on topic Remora - Rpi Software Stepping Using External Microcontroller via SPI

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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meister
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05 May 2023 07:27 #270705 by meister

Replied by meister on topic Remora - Rpi Software Stepping Using External Microcontroller via SPI

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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