greatscottgadgets / greatscottgadgets/hackrf

Running `hackrf_cpldjtag` should warn that it is no longer required

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Dominant language
C
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Description

The documentation notes that running hackrf_cpldjtag to update the CPLD is no longer required since the 2021.03.1 release. However if someone does want to run a custom CPLD bitstream and runs hackrf_cpldjtag to flash it, there is no warning that the bitstream will be silently ignored. This came up in #1140.

We could perhaps remove the hackrf_cpldjtag utility entirely, but it may still be wanted for working with older or customised firmware versions. If it's going to remain though, then it should probably at least print a message to warn that the standard firmware will now override the bitstream written with it.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start at the hackrf_cpldjtag utility entry point and inspect how it reports successful flashing, then read the firmware/CPLD update documentation referenced in the issue. Done means invoking the utility prints a clear warning that standard firmware overrides the written bitstream while preserving support for older or customised firmware versions.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
embedded-iot
Issue type
Feature
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
48/100

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