ColorCNC Colorlight 5A-75E/5A-75B as FPGA controller board

Well, the firmware compilation on my PC takes 5-10 minutes. PlaceNRouting is the most time consuming process. With 6 encoders, 6 stepgens, 12DI 12DO 3PWM the firmware doesn't meet timing requirements. But, in generally, rather close to them (38,4 instead of 40 Mhz and 114,5 instead of 125 Mhz).

romanetz wrote:

Well, the firmware compilation on my PC takes 5-10 minutes. PlaceNRouting is the most time consuming process. With 6 encoders, 6 stepgens, 12DI 12DO 3PWM the firmware doesn't meet timing requirements. But, in generally, rather close to them (38,4 instead of 40 Mhz and 114,5 instead of 125 Mhz).
 

That sounds a whole different story from what my PC is doing now. Just to check, you have modified one of the Json files to make your own config and build it with Litex-CNC? Could you share that config so I can test my build system? 

Here is my JSON, used for firmware compilation.

This is getting very strange:
I think my building system is splunked, because:

• the timings have failed worse then in your case;
• the build time is again exploding in my face (think it is related with the first case).

@romanetz: what is your toolchain you're using (i.e. version/branch of LitexCNC, Litex, Yosys, OSS-CAD-Suite). Dis you install the toolchain using the commands from LitexCNC or did you install it yourself? 

I'm not sure if I use the latest version.
Yosys 0.16+61 (git sha1 c785cb7fe, clang 10.0.0-4ubuntu1 -fPIC -Os)
nextpnr-ecp5 -- Next Generation Place and Route (Version nextpnr-0.3-14-g20cfafa1)
Project Trellis ecppack Version 1.0-496-g7454564

Info: Max frequency for clock                 '$glbnet$crg_clkout0': 43.53 MHz (PASS at 40.00 MHz)
Warning: Max frequency for clock '$glbnet$eth_clocks_rx$TRELLIS_IO_IN': 116.63 MHz (FAIL at 125.00 MHz)

 

Well. I've found some description of the network protocol that is implemented in original firmware.
hkubota.wordpress.com/2022/01/31/winter-...ght-5a-75b-protocol/
The goal of further investigation is to provide some kind of utility to convert colorlight card into litexcnc (so, in-system programming) without any soldering.