spi_owner.h File Reference

Explicit polling SPI executor for the bounded owner adapter. More...

#include "nexus/components/bus_owner.h"
#include "nexus/io/spi.h"

Go to the source code of this file.

Data Structures
struct	nx_spi_owner_operation_t
	Caller-owned SPI transaction descriptor, borrowed until SETTLED. More...
struct	nx_spi_owner_executor_t
	Exact polling executor storage; no payload copy or queue. More...

Functions
nx_owner_executor_port_t	nx_spi_owner_executor_port (nx_spi_owner_executor_t *executor, const nx_spi_port_t *port)
	Bind an explicit synchronous SPI execution adapter.

Detailed Description

Explicit polling SPI executor for the bounded owner adapter.

Author

Nexus Team

Definition in file spi_owner.h.

Function Documentation

nx_spi_owner_executor_port()

nx_owner_executor_port_t nx_spi_owner_executor_port	(	nx_spi_owner_executor_t *	executor,
		const nx_spi_port_t *	port )

Bind an explicit synchronous SPI execution adapter.

Parameters

[out]	executor	Fresh storage with no outstanding operation
[in]	port	Controller exclusively serviced by this owner

Returns

Port for nx_bus_owner_init, or a zero port for invalid input

Note

start executes a real CPU-active polling transaction and releases all IO buffers before returning. Owner service later publishes its caller-owned request. Polling cannot be preempted by another task's cancel; once the polling call returns, its result is final despite later cancellation or publication delay. Do not claim IRQ/DMA mode or low-CPU asynchronous hardware execution. Endpoints must prove their controller identity before any wire effect; distinct chip selects on this controller remain valid. The controller and executor outlive owner shutdown and all observers.