* WIP pio assembler
* add comparison tests against the official assembler
* tokenizer passing tests
* add buildkite pipeline
* comparison tests
* assembler now outputting a few programs similar to official
* largely complete
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Co-authored-by: Matt Knight <mattnite@proton.me>
* support for a subset of the bootrom functions added: fast bit count/ manipulation functions (tested), fast bulk memory fill/ copy functions (tested), flash access functions (NOT tested), debugging support functions (not implemented), miscellaneous functions (not implemented).
* added support for erasing and programming flash from user code. between the first and last call in a programming sequence, the SSI is not in a state where it can handle XIP accesses, so the code that calls the intervening functions must be located in SRAM. this is why I added the time_critical section to rp2040.ld (maybe one should create a dedicated section in ram that is rwx and keep data rwNx).
* flash_program.zig example added
David Sugar
Matt Knight
Vesim
David Sugar
Vlad Panazan
Matt Knight
Felix Queißner