Mesa 7i96s PWM outputs

Hello,
I have a small entry-level lathe-mill with 3 steppers, 2 spindles, and 1 encoder (on lathe spindle). Both spindles are controlled by PWM signals and separate direction pin, while steppers use typical step + dir signals. Now I would like to control everything with Mesa 7i96s card, that seems to be just enough for this machine.

While steppers and encored are clear, I am not sure how to set up PWM outputs. Original firmware "7i96s_d" has 1 PWM module (according to mesaflash), but I can not find any info at which pins, most likely it is internally connected to analog output. There is also "7i96s_2pwmd" firmware, but I can find only one PWM signal in pin file (I red somewhere that it replaces stepegen 4). For me ideal option would be to replace 2 stepgens with PWMs (with direction), and keep all other I/Os as general purpose limit switches, buttons, etc.
Can it be done with current firmware (7i96s_d or 7i96s_2pwmd)? If yes, then where I can find info about pinouts?
If not, then the only option is to build custom firmware - am I right?

Thanks in advance,
Michael Widlok
 

You can see the pin configuration with this code :
sudo mesaflash --device 7i96s -- addr 10.10.10.10 --readhmid
Then upload the bit file with the two pwm outputs and read again. and you will find the new pins .
sudo mesaflash --device 7i96s --addr 10.10.10.10 --write name_of_the_bitfile
sudo mesaflash --device 7i96s --addr 10.10.10.10 --reload

If there is a problem I think I can help with the bit file

The 2pwmd config has 2 PWMGens but as you surmised, one is for the built in
analog output.

I can make a  3pwmd config if you like, but probably over the weekend.
 

Thank You for quick answers!
Bestworld, I've tried these commands and seems that as a novice in Mesa cards I missed a few details. First PWM never showed up, the second is on TB2-2,3, while TB2-3,4 are free, so I assume that these can be used as direction outputs.

PCW, If You can make the bitfile it's great - Thanks! However I have some experience with FPGAs or VHDL, and it would be nice if I could prepare the firmware myself. Is there any tutorial or video available? I've downloaded firmware and sources from Mesa, but their "readme" files are almost not existent. Also there is no info how to compile for example "_2pwmd" or any other bitfile from source.
Efinix provide good documentation for theirs software and T20 FPGAs, and I assume that this is the softwrare used to build Mesa firmwares (T20 development kit even has a video).

I think the best lesson is this: lesson

Since I understood the idea of compiling bit files . 

I am attaching the file you need . 3pwm and 3 step/dir

 

If you want to learn to compile files yourself, you can try. (it's not difficult) If you have a problem I can try to help.

Machine is controlled from my own DIY driver board that expects 2 separate PWMs for both spindles, even if only one is used at any given time. To overcome this I will need to add some logic or relays, so I thought that reprogramming Mesa would be a better option. Anyway my driver was designed specially for "allwincnc" forum.linuxcnc.org/18-computer/39037-linuxcnc-orange-pi but I failed trying to install this project on modern armbian.

Bestworld, Yours file seems to be for a different board. 7i96s is build over Efinix Trion T20F256 FPGA, Yours file is for Xilinx FPGA - I think it is for 7i96 without 'S'. Now I'm watching the video, unfortunately I can not speak German . I assume that Xilinx and Efinix software is similar, I will try follow the same process on Efinix.

 

oops my mistake. I looked at the descriptions... I didn't see that there is another processor.
I'll try to fix the file tonight.

I've just downloaded Efinix software and it successfully build the default bin file from Mesa sources, project "seveni96s.xml". The board programmed and booted OK, however this one does not have any encored modules according to mesaflash --readhimd. I assume that this, as well as number of PWMs needs to be configured in the source.

Bestworld, If You could provide me some info about firmware organization and setting modules/pinouts it would be great. I found a few examples (on this forum), but none is for 7i96s with Efinix FPGA. Thanks!!