SoftChipSelectGuard.h File Reference

RAII soft chip-select (assert on construct, deassert on destroy). More...

#include <utility>

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Classes
class	SoftChipSelectGuard< AssertFn, DeassertFn >
	RAII soft-CS: runs assert_fn on construction and deassert_fn on destruction (including early return / error paths). More...

Functions
template<typename AssertFn , typename DeassertFn >
SoftChipSelectGuard< AssertFn, DeassertFn >	MakeSoftChipSelectGuard (AssertFn assert_fn, DeassertFn deassert_fn) noexcept
	Deduce guard type from assert/deassert callables.

Detailed Description

RAII soft chip-select (assert on construct, deassert on destroy).

Use around a single SPI frame (or an intentional multi-byte burst that must stay under one CS assertion). Pair with a bus mutex held for the whole mode + FIFO + transfer window — this guard only owns the CS pin edges.

Note

Does not replace bus locking. Callers must already own the SPI bus mutex so peers cannot change CPOL/CPHA or steal the peripheral.

Function Documentation

MakeSoftChipSelectGuard()

template<typename AssertFn , typename DeassertFn >

SoftChipSelectGuard< AssertFn, DeassertFn > MakeSoftChipSelectGuard ( AssertFn  assert_fn, DeassertFn  deassert_fn  )

noexcept

Deduce guard type from assert/deassert callables.