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QuickLogic-Corp / quicklogic-fpga-toolchain

Open Source FPGA toolchain and documentation for QuickLogic devices and eFPGA IP
https://quicklogic-quicklogic-fpga-toolchain.readthedocs-hosted.com/en/latest/index.html
Apache License 2.0
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Can't access IO_29 with PCF #13

Closed timsaxe closed 4 years ago

timsaxe commented 4 years ago

In pcf file I said 'set arnold_rst_o 29' and got an error message that said pad29 was not available

acomodi commented 4 years ago

Hi @timsaxe, Can you please provide an example to reproduce the error?

I think that the syntax may be wrong, the pcf file should have the following form:

set_io <io_name> <IOPAD name>

Also looking at the pinmap_PU64.csv, it appears that the pad 29 is indeed absent, I'll check whether this is expected.

timsaxe commented 4 years ago

My error. I had been looking at the quickfeather user guide, and it refers to IO_## so I assumed the # in the PCF were these numbers, but they are not, they are QFN pin #

Raises the question: how might we avoid other users making the same mistake?

Thought #1: add a comment at the the top of the example pcf files reminding people what the #s refer to Thought #2: add an EOSS3 'package' that uses the IO_# notation which would avoid the need for a decoder ring to map between the names used by the different worlds.