Pmod HB5

[aceblen]

Hello, I am very new to FPGAs and have a basys 3 Artix 7 board. I am trying to figure out how to access the pmod pins within VHDL code. So I can generate a PWM signal and control a DC motor. Any help with this would be awesome.

[artvvb]

Hi @aceblen

Please check this guide: https://digilent.com/reference/programmable-logic/guides/getting-started-with-vivado.

Any top-level ports in your design can be wired to a Pmod port by constraining them to the associated FPGA pins. The section of the guide on adding an XDC file to your project will cover how to do this. The guide presents Verilog, but the process is the same for VHDL - add a template constraint file, take the name of a top-level port in your VHDL source, and replace the name of a Pmod pin in the get_ports call on the line that corresponds to the Pmod pin, and uncomment the line.

Thanks,

Arthur