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chili-chips-ba / openCologne

Spicing up the first and only EU FPGA chip with a flashy new board, loaded with a suite of engaging demos and examples. https://www.chili-chips.xyz/open-cologne
https://nlnet.nl/project/openCologne
BSD 3-Clause "New" or "Revised" License
46 stars 2 forks source link

1.Blinky 'make_impl' command gives 'FATAL ERROR: Input CLK_REF of net 86 must have dedicated CLK pin connection' #1

Closed TarikHamedovic closed 6 months ago

TarikHamedovic commented 6 months ago

When running make impl command in terminal in 1.Blinky/3.build folder there is a an error that can be seen in the impl.log file: _'FATAL ERROR: Input CLK_REF of net 86 must have dedicated CLK pin connection'_

CLK_REF is only used in the blink.v with the PLL module, so that may be a clue. Also there may be an error in the makefile.

TarikHamedovic commented 6 months ago

The problem was the .ccf Constraint file had a typo. All is okay now.