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

meister wrote:

I can blink out but not read on my input pin and the strange thing is this:

7 bit IN FALSE test_PWM_GPIO.gpio.input1.in
7 bit OUT FALSE test_PWM_GPIO.gpio.input1.in-not

.in and .in-not is set to FALSE at the same time , hmmmmmm?

It looks like you soldered 2 pins together (pin 9 and 10) of the u28. Maybe this causing your issue and you fried some I/O pins of your FPGA

No, I measured the pin and it is exactly what it should be

.in-not should be the opposite of .in,
no matter what the pin thinks it has.

are the pins in the JSON assigned correctly?

Maybe you can file an issue on TOLP2's repo: github.com/Peter-van-Tol/LiteX-CNC/issues

I did several tests with a laboratory power supply.
I connected the power supply to the screw terminals, lowered the voltage and watched whether the plate responds to the pings.
The 75E V8 board worked at 3.3 V, at 3.2 V not.
However, the 75B V8 board worked at 2.7 V, at 2.6 not.
Working on the edge is not a good idea, but I think that FPGA inputs without risk and problem will withstand 3.5 V.
If the boards can be fed with such a voltage, the modification of the inputs would come down to unsoldering the PIN 1 (DIR) of the 245 circuit, bending it up and bridging it with PIN 10 (GND).
This is not as scary as the replacement of SSOT packages.
I don't say it will be working, but it seems possible.

Hello together! I am now making a second 3 axis cnc with Peters Firmware. When I connect the ft232h to upload the firmware there is no response.. (I think I fried it due emv) so I tried with a cheap eeprom programmer (ch431) to write directly to the eeprom of the Colorlight 7a75b and would should I say - It worked  So when somebody is struggeling with the upload of the firmware the eeprom programmer should be a good and cheap solution - Thanks again Peter for sharing and making your Project! If somebody need a bitfile anf the json, let me know - maybe we can upload a bitfile and a json as well on Peters Github repositoy? 

juergenmoser wrote:

I am now making a second 3 axis cnc with Peters Firmware.
 

Could you, please, share your HAL and INI config files ?

Yes, sure I can - but i‘m now at the beginning, so 3 Joints are already work and move, i‘m now setting up the home sensors and the spindle out nets. Tommorow i can upload the Files if you want..

juergenmoser wrote:

3 Joints are already work and move
 

This is what I need.

@ tuxcnc here are my ini and hal files - you need also the Json File on maybe your Desktop, otherwise it will not work or you change the location for the Json File in the hal... for the JSON and for the Bitfile I have to upload it to my Google Drive - I will add the link later...   


Google Drive with Bitfile and JSON:
drive.google.com/drive/folders/1y_3T1eHn...crYeb?usp=drive_link


I Also made a PCB Layout which hits perfectly on the 5A75B
You can Import the DXF as a Document (KiCAD, EAGLE, etc.) then you have the exact matching for positioning your headers.
Google Drive:
drive.google.com/file/d/1yBUNk07vlnOByhx.../view?usp=drive_link