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"

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Functions
int	iio_hw_trig_init (struct iio_hw_trig **iio_trig, struct iio_hw_trig_init_param *init_param)
	Initialize hardware trigger. More...
int	iio_trig_enable (void *trig)
	Enable system interrupt which is linked to the given trigger. More...
int	iio_trig_disable (void *trig)
	Disable system interrupt which is linked to the given trigger. More...
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. More...
int	iio_hw_trig_remove (struct iio_hw_trig *trig)
	Free the resources allocated by iio_hw_trig_init(). More...
int	iio_sw_trig_init (struct iio_sw_trig **iio_trig, struct iio_sw_trig_init_param *init_param)
	Initialize software trigger. More...
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. More...
int	iio_sw_trig_remove (struct iio_sw_trig *trig)
	Free the resources allocated by iio_sw_trig_init(). More...

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.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Neither the name of Analog Devices, Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES, INC. “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANALOG DEVICES, INC. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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.

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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.

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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.

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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.

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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.