iio_trigger.c File Reference

Implementation of generic iio trigger. More...

#include <stdlib.h>
#include <string.h>
#include "no_os_error.h"
#include "no_os_alloc.h"
#include "iio.h"
#include "iio_trigger.h"

Include dependency graph for iio_trigger.c:

Functions
int	iio_hw_trig_init (struct iio_hw_trig **iio_trig, struct iio_hw_trig_init_param *init_param)
	Initialize hardware trigger.
int	iio_trig_enable (void *trig)
	Enable system interrupt which is linked to the given trigger.
int	iio_trig_disable (void *trig)
	Disable system interrupt which is linked to the given trigger.
void	iio_hw_trig_handler (void *trig)
	Trigger interrupt handler. This function will be called when a system interrupt is asserted for the configured trigger.
int	iio_hw_trig_remove (struct iio_hw_trig *trig)
	Free the resources allocated by iio_hw_trig_init().
int	iio_sw_trig_init (struct iio_sw_trig **iio_trig, struct iio_sw_trig_init_param *init_param)
	Initialize software trigger.
int	iio_sw_trig_handler (void *trig, char *buf, uint32_t len, const struct iio_ch_info *channel, intptr_t priv)
	Handles the write request for trigger_now attribute.
int	iio_sw_trig_remove (struct iio_sw_trig *trig)
	Free the resources allocated by iio_sw_trig_init().

Detailed Description

Implementation of generic iio trigger.

Author

RBolboac (ramon.nosp@m.a.bo.nosp@m.lboac.nosp@m.a@an.nosp@m.alog..nosp@m.com)

Copyright 2022(c) Analog Devices, Inc.

SPDX-License-Identifier: BSD-3-Clause

Function Documentation

iio_hw_trig_handler()

void iio_hw_trig_handler

(

void *

trig

)

Trigger interrupt handler. This function will be called when a system interrupt is asserted for the configured trigger.

Parameters

trig	- Trigger structure which is linked to this handler.

iio_hw_trig_init()

int iio_hw_trig_init	(	struct iio_hw_trig **	iio_trig,
		struct iio_hw_trig_init_param *	init_param )

Initialize hardware trigger.

Parameters

iio_trig	- The iio trigger structure.
init_param	- The structure that contains the trigger initial params.

Returns

ret - Result of the initialization procedure.

iio_hw_trig_remove()

int iio_hw_trig_remove

(

struct iio_hw_trig *

trig

)

Free the resources allocated by iio_hw_trig_init().

Parameters

trig	- The trigger structure.

Returns

ret - Result of the remove procedure.

iio_sw_trig_handler()

int iio_sw_trig_handler	(	void *	trig,
		char *	buf,
		uint32_t	len,
		const struct iio_ch_info *	channel,
		intptr_t	priv )

Handles the write request for trigger_now attribute.

Parameters

trig	- The iio trigger structure.
buf	- Command buffer to be filled with the data to be written.
len	- Length of the received command buffer in bytes.
channel	- Command channel info (is NULL).
priv	- Command attribute id.

Returns

ret - Result of the sw trigger handler procedure.

iio_sw_trig_init()

int iio_sw_trig_init	(	struct iio_sw_trig **	iio_trig,
		struct iio_sw_trig_init_param *	init_param )

Initialize software trigger.

Parameters

iio_trig	- The iio trigger structure.
init_param	- The structure that contains the sw trigger initial params.

Returns

ret - Result of the initialization procedure.

iio_sw_trig_remove()

int iio_sw_trig_remove

(

struct iio_sw_trig *

trig

)

Free the resources allocated by iio_sw_trig_init().

Parameters

trig	- The trigger structure.

Returns

ret - Result of the remove procedure.

iio_trig_disable()

int iio_trig_disable

(

void *

trig

)

Disable system interrupt which is linked to the given trigger.

Parameters

trig	- Trigger structure.

Returns

ret - Result of the disable procedure.

iio_trig_enable()

int iio_trig_enable

(

void *

trig

)

Enable system interrupt which is linked to the given trigger.

Parameters

trig	- Trigger structure.

Returns

ret - Result of the enable procedure.