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3dfea4e449
remove inconsistent i2c_{read,write}_uint, improve buffer variant instead
ade7953sensor explicitly counting variable length ints
brzo currently is in a persistent todo-list
- there is no runtime configuration of i2c pins
- api does not support cached writes, only repeated start
- api is quite different from the 'Wire' implementation
(albeit, whole implementation is much smaller)
- code would really benefit from cxx rewrite, as any
upside from asm use is generally offset by readability
plus, re-using memory locations already introduces
'unobvious' asm code, which is not visible w/o disasm
- code focuses on gcc4.x compatibility and breaks w/ gcc9.x+
register allocation *could* be fixed by using u16 temporaries
this seems to work ok'ish, but it is unclear whether there
is any need for the full u32 value space