removed drive from uart rx/tx pins

so I was following through your tutorial, and came across a little bug in the Visual constraints editor. when I generate constraints for the UART pins from template, they get assigned 8mA drive by default:

IO_PORT "uart_tx" DRIVE=8 IO_TYPE=LVCMOS33 PULL_MODE=UP;

this causes problems in the bitstream generation phase, when executing

gowin_pack -d ${FAMILY} -o uart.fs uart_pnr.json

I get the error:

Traceback (most recent call last):
  File "~/Documents/local/oss-cad-suite/lib/python3.8/site-packages/Apycula-0.5.2.dev3+g16a91ef-py3.8.egg/apycula/gowin_pack.py", line 480, in place
KeyError: 'DRIVE'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "~/Documents/local/oss-cad-suite/libexec/gowin_pack", line 33, in <module>
    sys.exit(load_entry_point('Apycula==0.5.2.dev3+g16a91ef', 'console_scripts', 'gowin_pack')())
  File "~/Documents/local/oss-cad-suite/lib/python3.8/site-packages/Apycula-0.5.2.dev3+g16a91ef-py3.8.egg/apycula/gowin_pack.py", line 644, in main
  File "~/Documents/local/oss-cad-suite/lib/python3.8/site-packages/Apycula-0.5.2.dev3+g16a91ef-py3.8.egg/apycula/gowin_pack.py", line 483, in place
Exception: Incorrect attribute DRIVE=8 (iostd:"LVCMOS33", mode:IBUF)

the solution is to manually set the "Drive power" to "Unset" in the visual editor, so I think it would be best if it's "unset" by default when creating the uart constraint from template. I made the changes, but I'm not that familiar with typescript nor the codebase, so they could be wrong 😅

lushaylabs / lushay-code

removed drive from uart rx/tx pins #1