Breakup GPIOBUS

[akuker]

This is intended to separate the systimer class from gpiobus and to move the different board types to their own header files. There shouldn't be any functional changes.

I removed the -Wextra from the Makefile since it looks like we lost that change. Let me know if you think it needs to stay in there.

[akuker]

Note: there are other changes/improvements needed. This is just the initial PR to break things up. More changes will be coming

[uweseimet]

@akuker Not sure what you mean with -Wextra. Currently it is part of the build process (this is why I found the compile-time issue on buster today), and it should stay in the Makefile, because our code compiles fine with it.

[uweseimet]

Approved, from my side. Please check my comment on -Wextra, please.

[akuker]

Approved, from my side. Please check my comment on -Wextra, please.

I added this back in. Thanks @uweseimet !

[akuker]

0cb6948 and 42178fb are identical now.

@uweseimet - would you mind taking a look at this again and make sure I didn't mess something up? I accidentally checked in a bunch of banana pi changes before I merged this PR :(

https://github.com/akuker/RASCSI/compare/0cb6948..42178fb

[sonarcloud]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
107 Code Smells

0.0% Coverage
2.1% Duplication

[uweseimet]

@akuker I could not find anything obviously wrong. I don't think that anything bad can happen anyway, because essentially that is a code move and not a change, and I bet that if something was wrong, rascsi would not work at al anymorel, i.e. there is hardly any potential of missing anything hidden.

[akuker]

Thanks @uweseimet