Icmsg IPC library API

Icmsg IPC library API. More...

Data Structures
struct	icmsg_config_t
struct	icmsg_data_t

Enumerations
enum	icmsg_state { ICMSG_STATE_OFF , ICMSG_STATE_BUSY , ICMSG_STATE_READY }

Functions
int	icmsg_open (const struct icmsg_config_t *conf, struct icmsg_data_t *dev_data, const struct ipc_service_cb *cb, void *ctx)
	Open an icmsg instance.
int	icmsg_close (const struct icmsg_config_t *conf, struct icmsg_data_t *dev_data)
	Close an icmsg instance.
int	icmsg_send (const struct icmsg_config_t *conf, struct icmsg_data_t *dev_data, const void *msg, size_t len)
	Send a message to the remote icmsg instance.

Detailed Description

Icmsg IPC library API.

Enumeration Type Documentation

icmsg_state

enum icmsg_state

#include <zephyr/ipc/icmsg.h>

Enumerator
ICMSG_STATE_OFF
ICMSG_STATE_BUSY
ICMSG_STATE_READY

Function Documentation

icmsg_close()

int icmsg_close	(	const struct icmsg_config_t *	conf,
		struct icmsg_data_t *	dev_data
	)

#include <zephyr/ipc/icmsg.h>

Close an icmsg instance.

Closing an icmsg instance results in releasing all resources used by given instance including the shared memory regions and mbox devices.

Parameters

[in]	conf	Structure containing configuration parameters for the icmsg instance being closed. Its content must be the same as used for creating this instance with icmsg_open.
[in,out]	dev_data	Structure containing run-time data used by the icmsg instance.

Return values

0	on success.
other	errno codes from dependent modules.

icmsg_open()

int icmsg_open	(	const struct icmsg_config_t *	conf,
		struct icmsg_data_t *	dev_data,
		const struct ipc_service_cb *	cb,
		void *	ctx
	)

#include <zephyr/ipc/icmsg.h>

Open an icmsg instance.

Open an icmsg instance to be able to send and receive messages to a remote instance. This function is blocking until the handshake with the remote instance is completed. This function is intended to be called late in the initialization process, possibly from a thread which can be safely blocked while handshake with the remote instance is being pefromed.

Parameters

[in]	conf	Structure containing configuration parameters for the icmsg instance.
[in,out]	dev_data	Structure containing run-time data used by the icmsg instance.
[in]	cb	Structure containing callback functions to be called on events generated by this icmsg instance. The pointed memory must be preserved while the icmsg instance is active.
[in]	ctx	Pointer to context passed as an argument to callbacks.

Return values

0	on success.
-EALREADY	when the instance is already opened.
other	errno codes from dependent modules.

icmsg_send()

int icmsg_send	(	const struct icmsg_config_t *	conf,
		struct icmsg_data_t *	dev_data,
		const void *	msg,
		size_t	len
	)

#include <zephyr/ipc/icmsg.h>

Send a message to the remote icmsg instance.

Parameters

[in]	conf	Structure containing configuration parameters for the icmsg instance.
[in,out]	dev_data	Structure containing run-time data used by the icmsg instance.
[in]	msg	Pointer to a buffer containing data to send.
[in]	len	Size of data in the msg buffer.

Return values

Number	of sent bytes.
-EBUSY	when the instance has not finished handshake with the remote instance.
-ENODATA	when the requested data to send is empty.
-EBADMSG	when the requested data to send is too big.
-ENOBUFS	when there are no TX buffers available.
other	errno codes from dependent modules.