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Remora - Rpi Software Stepping Using External Microcontroller via SPI

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3 years 6 months ago #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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3 years 6 months ago #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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3 years 6 months ago #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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3 years 5 months ago #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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3 years 5 months ago #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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3 years 5 months ago #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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