[mirror_ubuntu-jammy-kernel.git] / tools / iio / iio_event_monitor.c

// SPDX-License-Identifier: GPL-2.0-only
/* Industrialio event test code.
 *
 * Copyright (c) 2011-2012 Lars-Peter Clausen <lars@metafoo.de>
 *
 * This program is primarily intended as an example application.
 * Reads the current buffer setup from sysfs and starts a short capture
 * from the specified device, pretty printing the result after appropriate
 * conversion.
 *
 * Usage:
 *	iio_event_monitor <device_name>
 */

#include <unistd.h>
#include <stdlib.h>
#include <stdbool.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <poll.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include "iio_utils.h"
#include <linux/iio/events.h>
#include <linux/iio/types.h>

static const char * const iio_chan_type_name_spec[] = {
	[IIO_VOLTAGE] = "voltage",
	[IIO_CURRENT] = "current",
	[IIO_POWER] = "power",
	[IIO_ACCEL] = "accel",
	[IIO_ANGL_VEL] = "anglvel",
	[IIO_MAGN] = "magn",
	[IIO_LIGHT] = "illuminance",
	[IIO_INTENSITY] = "intensity",
	[IIO_PROXIMITY] = "proximity",
	[IIO_TEMP] = "temp",
	[IIO_INCLI] = "incli",
	[IIO_ROT] = "rot",
	[IIO_ANGL] = "angl",
	[IIO_TIMESTAMP] = "timestamp",
	[IIO_CAPACITANCE] = "capacitance",
	[IIO_ALTVOLTAGE] = "altvoltage",
	[IIO_CCT] = "cct",
	[IIO_PRESSURE] = "pressure",
	[IIO_HUMIDITYRELATIVE] = "humidityrelative",
	[IIO_ACTIVITY] = "activity",
	[IIO_STEPS] = "steps",
	[IIO_ENERGY] = "energy",
	[IIO_DISTANCE] = "distance",
	[IIO_VELOCITY] = "velocity",
	[IIO_CONCENTRATION] = "concentration",
	[IIO_RESISTANCE] = "resistance",
	[IIO_PH] = "ph",
	[IIO_UVINDEX] = "uvindex",
	[IIO_GRAVITY] = "gravity",
	[IIO_POSITIONRELATIVE] = "positionrelative",
	[IIO_PHASE] = "phase",
	[IIO_MASSCONCENTRATION] = "massconcentration",
};

static const char * const iio_ev_type_text[] = {
	[IIO_EV_TYPE_THRESH] = "thresh",
	[IIO_EV_TYPE_MAG] = "mag",
	[IIO_EV_TYPE_ROC] = "roc",
	[IIO_EV_TYPE_THRESH_ADAPTIVE] = "thresh_adaptive",
	[IIO_EV_TYPE_MAG_ADAPTIVE] = "mag_adaptive",
	[IIO_EV_TYPE_CHANGE] = "change",
};

static const char * const iio_ev_dir_text[] = {
	[IIO_EV_DIR_EITHER] = "either",
	[IIO_EV_DIR_RISING] = "rising",
	[IIO_EV_DIR_FALLING] = "falling"
};

static const char * const iio_modifier_names[] = {
	[IIO_MOD_X] = "x",
	[IIO_MOD_Y] = "y",
	[IIO_MOD_Z] = "z",
	[IIO_MOD_X_AND_Y] = "x&y",
	[IIO_MOD_X_AND_Z] = "x&z",
	[IIO_MOD_Y_AND_Z] = "y&z",
	[IIO_MOD_X_AND_Y_AND_Z] = "x&y&z",
	[IIO_MOD_X_OR_Y] = "x|y",
	[IIO_MOD_X_OR_Z] = "x|z",
	[IIO_MOD_Y_OR_Z] = "y|z",
	[IIO_MOD_X_OR_Y_OR_Z] = "x|y|z",
	[IIO_MOD_LIGHT_BOTH] = "both",
	[IIO_MOD_LIGHT_IR] = "ir",
	[IIO_MOD_ROOT_SUM_SQUARED_X_Y] = "sqrt(x^2+y^2)",
	[IIO_MOD_SUM_SQUARED_X_Y_Z] = "x^2+y^2+z^2",
	[IIO_MOD_LIGHT_CLEAR] = "clear",
	[IIO_MOD_LIGHT_RED] = "red",
	[IIO_MOD_LIGHT_GREEN] = "green",
	[IIO_MOD_LIGHT_BLUE] = "blue",
	[IIO_MOD_LIGHT_UV] = "uv",
	[IIO_MOD_LIGHT_DUV] = "duv",
	[IIO_MOD_QUATERNION] = "quaternion",
	[IIO_MOD_TEMP_AMBIENT] = "ambient",
	[IIO_MOD_TEMP_OBJECT] = "object",
	[IIO_MOD_NORTH_MAGN] = "from_north_magnetic",
	[IIO_MOD_NORTH_TRUE] = "from_north_true",
	[IIO_MOD_NORTH_MAGN_TILT_COMP] = "from_north_magnetic_tilt_comp",
	[IIO_MOD_NORTH_TRUE_TILT_COMP] = "from_north_true_tilt_comp",
	[IIO_MOD_RUNNING] = "running",
	[IIO_MOD_JOGGING] = "jogging",
	[IIO_MOD_WALKING] = "walking",
	[IIO_MOD_STILL] = "still",
	[IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z] = "sqrt(x^2+y^2+z^2)",
	[IIO_MOD_I] = "i",
	[IIO_MOD_Q] = "q",
	[IIO_MOD_CO2] = "co2",
	[IIO_MOD_ETHANOL] = "ethanol",
	[IIO_MOD_H2] = "h2",
	[IIO_MOD_VOC] = "voc",
	[IIO_MOD_PM1] = "pm1",
	[IIO_MOD_PM2P5] = "pm2p5",
	[IIO_MOD_PM4] = "pm4",
	[IIO_MOD_PM10] = "pm10",
};

static bool event_is_known(struct iio_event_data *event)
{
	enum iio_chan_type type = IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event->id);
	enum iio_modifier mod = IIO_EVENT_CODE_EXTRACT_MODIFIER(event->id);
	enum iio_event_type ev_type = IIO_EVENT_CODE_EXTRACT_TYPE(event->id);
	enum iio_event_direction dir = IIO_EVENT_CODE_EXTRACT_DIR(event->id);

	switch (type) {
	case IIO_VOLTAGE:
	case IIO_CURRENT:
	case IIO_POWER:
	case IIO_ACCEL:
	case IIO_ANGL_VEL:
	case IIO_MAGN:
	case IIO_LIGHT:
	case IIO_INTENSITY:
	case IIO_PROXIMITY:
	case IIO_TEMP:
	case IIO_INCLI:
	case IIO_ROT:
	case IIO_ANGL:
	case IIO_TIMESTAMP:
	case IIO_CAPACITANCE:
	case IIO_ALTVOLTAGE:
	case IIO_CCT:
	case IIO_PRESSURE:
	case IIO_HUMIDITYRELATIVE:
	case IIO_ACTIVITY:
	case IIO_STEPS:
	case IIO_ENERGY:
	case IIO_DISTANCE:
	case IIO_VELOCITY:
	case IIO_CONCENTRATION:
	case IIO_RESISTANCE:
	case IIO_PH:
	case IIO_UVINDEX:
	case IIO_GRAVITY:
	case IIO_POSITIONRELATIVE:
	case IIO_PHASE:
	case IIO_MASSCONCENTRATION:
		break;
	default:
		return false;
	}

	switch (mod) {
	case IIO_NO_MOD:
	case IIO_MOD_X:
	case IIO_MOD_Y:
	case IIO_MOD_Z:
	case IIO_MOD_X_AND_Y:
	case IIO_MOD_X_AND_Z:
	case IIO_MOD_Y_AND_Z:
	case IIO_MOD_X_AND_Y_AND_Z:
	case IIO_MOD_X_OR_Y:
	case IIO_MOD_X_OR_Z:
	case IIO_MOD_Y_OR_Z:
	case IIO_MOD_X_OR_Y_OR_Z:
	case IIO_MOD_LIGHT_BOTH:
	case IIO_MOD_LIGHT_IR:
	case IIO_MOD_ROOT_SUM_SQUARED_X_Y:
	case IIO_MOD_SUM_SQUARED_X_Y_Z:
	case IIO_MOD_LIGHT_CLEAR:
	case IIO_MOD_LIGHT_RED:
	case IIO_MOD_LIGHT_GREEN:
	case IIO_MOD_LIGHT_BLUE:
	case IIO_MOD_LIGHT_UV:
	case IIO_MOD_LIGHT_DUV:
	case IIO_MOD_QUATERNION:
	case IIO_MOD_TEMP_AMBIENT:
	case IIO_MOD_TEMP_OBJECT:
	case IIO_MOD_NORTH_MAGN:
	case IIO_MOD_NORTH_TRUE:
	case IIO_MOD_NORTH_MAGN_TILT_COMP:
	case IIO_MOD_NORTH_TRUE_TILT_COMP:
	case IIO_MOD_RUNNING:
	case IIO_MOD_JOGGING:
	case IIO_MOD_WALKING:
	case IIO_MOD_STILL:
	case IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z:
	case IIO_MOD_I:
	case IIO_MOD_Q:
	case IIO_MOD_CO2:
	case IIO_MOD_ETHANOL:
	case IIO_MOD_H2:
	case IIO_MOD_VOC:
	case IIO_MOD_PM1:
	case IIO_MOD_PM2P5:
	case IIO_MOD_PM4:
	case IIO_MOD_PM10:
		break;
	default:
		return false;
	}

	switch (ev_type) {
	case IIO_EV_TYPE_THRESH:
	case IIO_EV_TYPE_MAG:
	case IIO_EV_TYPE_ROC:
	case IIO_EV_TYPE_THRESH_ADAPTIVE:
	case IIO_EV_TYPE_MAG_ADAPTIVE:
	case IIO_EV_TYPE_CHANGE:
		break;
	default:
		return false;
	}

	switch (dir) {
	case IIO_EV_DIR_EITHER:
	case IIO_EV_DIR_RISING:
	case IIO_EV_DIR_FALLING:
	case IIO_EV_DIR_NONE:
		break;
	default:
		return false;
	}

	return true;
}

static void print_event(struct iio_event_data *event)
{
	enum iio_chan_type type = IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event->id);
	enum iio_modifier mod = IIO_EVENT_CODE_EXTRACT_MODIFIER(event->id);
	enum iio_event_type ev_type = IIO_EVENT_CODE_EXTRACT_TYPE(event->id);
	enum iio_event_direction dir = IIO_EVENT_CODE_EXTRACT_DIR(event->id);
	int chan = IIO_EVENT_CODE_EXTRACT_CHAN(event->id);
	int chan2 = IIO_EVENT_CODE_EXTRACT_CHAN2(event->id);
	bool diff = IIO_EVENT_CODE_EXTRACT_DIFF(event->id);

	if (!event_is_known(event)) {
		fprintf(stderr, "Unknown event: time: %lld, id: %llx\n",
			event->timestamp, event->id);

		return;
	}

	printf("Event: time: %lld, type: %s", event->timestamp,
	       iio_chan_type_name_spec[type]);

	if (mod != IIO_NO_MOD)
		printf("(%s)", iio_modifier_names[mod]);

	if (chan >= 0) {
		printf(", channel: %d", chan);
		if (diff && chan2 >= 0)
			printf("-%d", chan2);
	}

	printf(", evtype: %s", iio_ev_type_text[ev_type]);

	if (dir != IIO_EV_DIR_NONE)
		printf(", direction: %s", iio_ev_dir_text[dir]);

	printf("\n");
}

int main(int argc, char **argv)
{
	struct iio_event_data event;
	const char *device_name;
	char *chrdev_name;
	int ret;
	int dev_num;
	int fd, event_fd;

	if (argc <= 1) {
		fprintf(stderr, "Usage: %s <device_name>\n", argv[0]);
		return -1;
	}

	device_name = argv[1];

	dev_num = find_type_by_name(device_name, "iio:device");
	if (dev_num >= 0) {
		printf("Found IIO device with name %s with device number %d\n",
		       device_name, dev_num);
		ret = asprintf(&chrdev_name, "/dev/iio:device%d", dev_num);
		if (ret < 0)
			return -ENOMEM;
	} else {
		/*
		 * If we can't find an IIO device by name assume device_name is
		 * an IIO chrdev
		 */
		chrdev_name = strdup(device_name);
		if (!chrdev_name)
			return -ENOMEM;
	}

	fd = open(chrdev_name, 0);
	if (fd == -1) {
		ret = -errno;
		fprintf(stderr, "Failed to open %s\n", chrdev_name);
		goto error_free_chrdev_name;
	}

	ret = ioctl(fd, IIO_GET_EVENT_FD_IOCTL, &event_fd);
	if (ret == -1 || event_fd == -1) {
		ret = -errno;
		if (ret == -ENODEV)
			fprintf(stderr,
				"This device does not support events\n");
		else
			fprintf(stderr, "Failed to retrieve event fd\n");
		if (close(fd) == -1)
			perror("Failed to close character device file");

		goto error_free_chrdev_name;
	}

	if (close(fd) == -1)  {
		ret = -errno;
		goto error_free_chrdev_name;
	}

	while (true) {
		ret = read(event_fd, &event, sizeof(event));
		if (ret == -1) {
			if (errno == EAGAIN) {
				fprintf(stderr, "nothing available\n");
				continue;
			} else {
				ret = -errno;
				perror("Failed to read event from device");
				break;
			}
		}

		if (ret != sizeof(event)) {
			fprintf(stderr, "Reading event failed!\n");
			ret = -EIO;
			break;
		}

		print_event(&event);
	}

	if (close(event_fd) == -1)
		perror("Failed to close event file");

error_free_chrdev_name:
	free(chrdev_name);

	return ret;
}
Commit	Line	Data
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
7042122f LPC	2	/* Industrialio event test code.
	3	*
	4	* Copyright (c) 2011-2012 Lars-Peter Clausen <lars@metafoo.de>
	5	*
7042122f LPC	6	* This program is primarily intended as an example application.
	7	* Reads the current buffer setup from sysfs and starts a short capture
	8	* from the specified device, pretty printing the result after appropriate
	9	* conversion.
	10	*
	11	* Usage:
	12	* iio_event_monitor <device_name>
7042122f LPC	13	*/
7042122f LPC	14
7042122f	15	#include <unistd.h>
bdcb31d0	16	#include <stdlib.h>
7042122f LPC	17	#include <stdbool.h>
	18	#include <stdio.h>
	19	#include <errno.h>
	20	#include <string.h>
	21	#include <poll.h>
	22	#include <fcntl.h>
	23	#include <sys/ioctl.h>
	24	#include "iio_utils.h"
06458e27	25	#include <linux/iio/events.h>
95763859	26	#include <linux/iio/types.h>
7042122f LPC	27
	28	static const char * const iio_chan_type_name_spec[] = {
	29	[IIO_VOLTAGE] = "voltage",
	30	[IIO_CURRENT] = "current",
	31	[IIO_POWER] = "power",
	32	[IIO_ACCEL] = "accel",
	33	[IIO_ANGL_VEL] = "anglvel",
	34	[IIO_MAGN] = "magn",
	35	[IIO_LIGHT] = "illuminance",
	36	[IIO_INTENSITY] = "intensity",
	37	[IIO_PROXIMITY] = "proximity",
	38	[IIO_TEMP] = "temp",
	39	[IIO_INCLI] = "incli",
	40	[IIO_ROT] = "rot",
	41	[IIO_ANGL] = "angl",
	42	[IIO_TIMESTAMP] = "timestamp",
	43	[IIO_CAPACITANCE] = "capacitance",
a2160146	44	[IIO_ALTVOLTAGE] = "altvoltage",
0378250b PM	45	[IIO_CCT] = "cct",
	46	[IIO_PRESSURE] = "pressure",
	47	[IIO_HUMIDITYRELATIVE] = "humidityrelative",
282a5663 DB	48	[IIO_ACTIVITY] = "activity",
282a5663 DB	49	[IIO_STEPS] = "steps",
30e83267 PM	50	[IIO_ENERGY] = "energy",
	51	[IIO_DISTANCE] = "distance",
	52	[IIO_VELOCITY] = "velocity",
6ad515c6 PMS	53	[IIO_CONCENTRATION] = "concentration",
	54	[IIO_RESISTANCE] = "resistance",
	55	[IIO_PH] = "ph",
d409404c	56	[IIO_UVINDEX] = "uvindex",
571299d0	57	[IIO_GRAVITY] = "gravity",
3055a6cf	58	[IIO_POSITIONRELATIVE] = "positionrelative",
c73314e6	59	[IIO_PHASE] = "phase",
17abc9ec	60	[IIO_MASSCONCENTRATION] = "massconcentration",
7042122f LPC	61	};
	62
	63	static const char * const iio_ev_type_text[] = {
	64	[IIO_EV_TYPE_THRESH] = "thresh",
	65	[IIO_EV_TYPE_MAG] = "mag",
	66	[IIO_EV_TYPE_ROC] = "roc",
	67	[IIO_EV_TYPE_THRESH_ADAPTIVE] = "thresh_adaptive",
	68	[IIO_EV_TYPE_MAG_ADAPTIVE] = "mag_adaptive",
27be8423	69	[IIO_EV_TYPE_CHANGE] = "change",
7042122f LPC	70	};
	71
	72	static const char * const iio_ev_dir_text[] = {
	73	[IIO_EV_DIR_EITHER] = "either",
	74	[IIO_EV_DIR_RISING] = "rising",
	75	[IIO_EV_DIR_FALLING] = "falling"
	76	};
	77
	78	static const char * const iio_modifier_names[] = {
	79	[IIO_MOD_X] = "x",
	80	[IIO_MOD_Y] = "y",
	81	[IIO_MOD_Z] = "z",
0a6e2170 RD	82	[IIO_MOD_X_AND_Y] = "x&y",
	83	[IIO_MOD_X_AND_Z] = "x&z",
	84	[IIO_MOD_Y_AND_Z] = "y&z",
	85	[IIO_MOD_X_AND_Y_AND_Z] = "x&y&z",
	86	[IIO_MOD_X_OR_Y] = "x\|y",
	87	[IIO_MOD_X_OR_Z] = "x\|z",
	88	[IIO_MOD_Y_OR_Z] = "y\|z",
	89	[IIO_MOD_X_OR_Y_OR_Z] = "x\|y\|z",
7042122f LPC	90	[IIO_MOD_LIGHT_BOTH] = "both",
7042122f LPC	91	[IIO_MOD_LIGHT_IR] = "ir",
da4db940 PM	92	[IIO_MOD_ROOT_SUM_SQUARED_X_Y] = "sqrt(x^2+y^2)",
	93	[IIO_MOD_SUM_SQUARED_X_Y_Z] = "x^2+y^2+z^2",
	94	[IIO_MOD_LIGHT_CLEAR] = "clear",
	95	[IIO_MOD_LIGHT_RED] = "red",
	96	[IIO_MOD_LIGHT_GREEN] = "green",
	97	[IIO_MOD_LIGHT_BLUE] = "blue",
2c5ff1f9	98	[IIO_MOD_LIGHT_UV] = "uv",
c0e4e0fd	99	[IIO_MOD_LIGHT_DUV] = "duv",
0a6e2170 RD	100	[IIO_MOD_QUATERNION] = "quaternion",
	101	[IIO_MOD_TEMP_AMBIENT] = "ambient",
	102	[IIO_MOD_TEMP_OBJECT] = "object",
	103	[IIO_MOD_NORTH_MAGN] = "from_north_magnetic",
	104	[IIO_MOD_NORTH_TRUE] = "from_north_true",
	105	[IIO_MOD_NORTH_MAGN_TILT_COMP] = "from_north_magnetic_tilt_comp",
	106	[IIO_MOD_NORTH_TRUE_TILT_COMP] = "from_north_true_tilt_comp",
282a5663 DB	107	[IIO_MOD_RUNNING] = "running",
	108	[IIO_MOD_JOGGING] = "jogging",
	109	[IIO_MOD_WALKING] = "walking",
	110	[IIO_MOD_STILL] = "still",
30e83267	111	[IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z] = "sqrt(x^2+y^2+z^2)",
6ad515c6 PMS	112	[IIO_MOD_I] = "i",
	113	[IIO_MOD_Q] = "q",
	114	[IIO_MOD_CO2] = "co2",
b170f7d4 AB	115	[IIO_MOD_ETHANOL] = "ethanol",
b170f7d4 AB	116	[IIO_MOD_H2] = "h2",
6ad515c6	117	[IIO_MOD_VOC] = "voc",
17abc9ec TD	118	[IIO_MOD_PM1] = "pm1",
	119	[IIO_MOD_PM2P5] = "pm2p5",
	120	[IIO_MOD_PM4] = "pm4",
	121	[IIO_MOD_PM10] = "pm10",
7042122f LPC	122	};
	123
	124	static bool event_is_known(struct iio_event_data *event)
	125	{
	126	enum iio_chan_type type = IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event->id);
	127	enum iio_modifier mod = IIO_EVENT_CODE_EXTRACT_MODIFIER(event->id);
	128	enum iio_event_type ev_type = IIO_EVENT_CODE_EXTRACT_TYPE(event->id);
	129	enum iio_event_direction dir = IIO_EVENT_CODE_EXTRACT_DIR(event->id);
	130
	131	switch (type) {
	132	case IIO_VOLTAGE:
	133	case IIO_CURRENT:
	134	case IIO_POWER:
	135	case IIO_ACCEL:
	136	case IIO_ANGL_VEL:
	137	case IIO_MAGN:
	138	case IIO_LIGHT:
	139	case IIO_INTENSITY:
	140	case IIO_PROXIMITY:
	141	case IIO_TEMP:
	142	case IIO_INCLI:
	143	case IIO_ROT:
	144	case IIO_ANGL:
	145	case IIO_TIMESTAMP:
	146	case IIO_CAPACITANCE:
a2160146	147	case IIO_ALTVOLTAGE:
0378250b PM	148	case IIO_CCT:
	149	case IIO_PRESSURE:
	150	case IIO_HUMIDITYRELATIVE:
282a5663 DB	151	case IIO_ACTIVITY:
282a5663 DB	152	case IIO_STEPS:
30e83267 PM	153	case IIO_ENERGY:
	154	case IIO_DISTANCE:
	155	case IIO_VELOCITY:
6ad515c6 PMS	156	case IIO_CONCENTRATION:
	157	case IIO_RESISTANCE:
	158	case IIO_PH:
d409404c	159	case IIO_UVINDEX:
571299d0	160	case IIO_GRAVITY:
3055a6cf	161	case IIO_POSITIONRELATIVE:
c73314e6	162	case IIO_PHASE:
17abc9ec	163	case IIO_MASSCONCENTRATION:
7042122f LPC	164	break;
	165	default:
	166	return false;
	167	}
	168
	169	switch (mod) {
	170	case IIO_NO_MOD:
	171	case IIO_MOD_X:
	172	case IIO_MOD_Y:
	173	case IIO_MOD_Z:
0a6e2170 RD	174	case IIO_MOD_X_AND_Y:
	175	case IIO_MOD_X_AND_Z:
	176	case IIO_MOD_Y_AND_Z:
	177	case IIO_MOD_X_AND_Y_AND_Z:
	178	case IIO_MOD_X_OR_Y:
	179	case IIO_MOD_X_OR_Z:
	180	case IIO_MOD_Y_OR_Z:
	181	case IIO_MOD_X_OR_Y_OR_Z:
7042122f LPC	182	case IIO_MOD_LIGHT_BOTH:
7042122f LPC	183	case IIO_MOD_LIGHT_IR:
da4db940 PM	184	case IIO_MOD_ROOT_SUM_SQUARED_X_Y:
	185	case IIO_MOD_SUM_SQUARED_X_Y_Z:
	186	case IIO_MOD_LIGHT_CLEAR:
	187	case IIO_MOD_LIGHT_RED:
	188	case IIO_MOD_LIGHT_GREEN:
	189	case IIO_MOD_LIGHT_BLUE:
2c5ff1f9	190	case IIO_MOD_LIGHT_UV:
c0e4e0fd	191	case IIO_MOD_LIGHT_DUV:
0a6e2170 RD	192	case IIO_MOD_QUATERNION:
	193	case IIO_MOD_TEMP_AMBIENT:
	194	case IIO_MOD_TEMP_OBJECT:
	195	case IIO_MOD_NORTH_MAGN:
	196	case IIO_MOD_NORTH_TRUE:
	197	case IIO_MOD_NORTH_MAGN_TILT_COMP:
	198	case IIO_MOD_NORTH_TRUE_TILT_COMP:
282a5663 DB	199	case IIO_MOD_RUNNING:
	200	case IIO_MOD_JOGGING:
	201	case IIO_MOD_WALKING:
	202	case IIO_MOD_STILL:
30e83267	203	case IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z:
6ad515c6 PMS	204	case IIO_MOD_I:
	205	case IIO_MOD_Q:
	206	case IIO_MOD_CO2:
b170f7d4 AB	207	case IIO_MOD_ETHANOL:
b170f7d4 AB	208	case IIO_MOD_H2:
6ad515c6	209	case IIO_MOD_VOC:
17abc9ec TD	210	case IIO_MOD_PM1:
	211	case IIO_MOD_PM2P5:
	212	case IIO_MOD_PM4:
	213	case IIO_MOD_PM10:
7042122f LPC	214	break;
	215	default:
	216	return false;
	217	}
	218
	219	switch (ev_type) {
	220	case IIO_EV_TYPE_THRESH:
	221	case IIO_EV_TYPE_MAG:
	222	case IIO_EV_TYPE_ROC:
	223	case IIO_EV_TYPE_THRESH_ADAPTIVE:
	224	case IIO_EV_TYPE_MAG_ADAPTIVE:
27be8423	225	case IIO_EV_TYPE_CHANGE:
7042122f LPC	226	break;
	227	default:
	228	return false;
	229	}
	230
	231	switch (dir) {
	232	case IIO_EV_DIR_EITHER:
	233	case IIO_EV_DIR_RISING:
	234	case IIO_EV_DIR_FALLING:
282a5663	235	case IIO_EV_DIR_NONE:
7042122f LPC	236	break;
	237	default:
	238	return false;
	239	}
	240
	241	return true;
	242	}
	243
	244	static void print_event(struct iio_event_data *event)
	245	{
	246	enum iio_chan_type type = IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event->id);
	247	enum iio_modifier mod = IIO_EVENT_CODE_EXTRACT_MODIFIER(event->id);
	248	enum iio_event_type ev_type = IIO_EVENT_CODE_EXTRACT_TYPE(event->id);
	249	enum iio_event_direction dir = IIO_EVENT_CODE_EXTRACT_DIR(event->id);
	250	int chan = IIO_EVENT_CODE_EXTRACT_CHAN(event->id);
	251	int chan2 = IIO_EVENT_CODE_EXTRACT_CHAN2(event->id);
	252	bool diff = IIO_EVENT_CODE_EXTRACT_DIFF(event->id);
	253
	254	if (!event_is_known(event)) {
d9abc615 CO	255	fprintf(stderr, "Unknown event: time: %lld, id: %llx\n",
d9abc615 CO	256	event->timestamp, event->id);
7663a4aa	257
7042122f LPC	258	return;
	259	}
	260
916e89e4 HK	261	printf("Event: time: %lld, type: %s", event->timestamp,
916e89e4 HK	262	iio_chan_type_name_spec[type]);
7042122f	263
916e89e4 HK	264	if (mod != IIO_NO_MOD)
916e89e4 HK	265	printf("(%s)", iio_modifier_names[mod]);
7042122f	266
916e89e4 HK	267	if (chan >= 0) {
	268	printf(", channel: %d", chan);
	269	if (diff && chan2 >= 0)
	270	printf("-%d", chan2);
	271	}
7042122f	272
916e89e4	273	printf(", evtype: %s", iio_ev_type_text[ev_type]);
282a5663 DB	274
	275	if (dir != IIO_EV_DIR_NONE)
	276	printf(", direction: %s", iio_ev_dir_text[dir]);
7663a4aa	277
282a5663	278	printf("\n");
7042122f LPC	279	}
	280
	281	int main(int argc, char **argv)
	282	{
	283	struct iio_event_data event;
	284	const char *device_name;
	285	char *chrdev_name;
	286	int ret;
	287	int dev_num;
	288	int fd, event_fd;
	289
	290	if (argc <= 1) {
d9abc615	291	fprintf(stderr, "Usage: %s <device_name>\n", argv[0]);
7042122f LPC	292	return -1;
	293	}
	294
	295	device_name = argv[1];
	296
	297	dev_num = find_type_by_name(device_name, "iio:device");
	298	if (dev_num >= 0) {
	299	printf("Found IIO device with name %s with device number %d\n",
7663a4aa	300	device_name, dev_num);
7042122f	301	ret = asprintf(&chrdev_name, "/dev/iio:device%d", dev_num);
37d38e2b	302	if (ret < 0)
0e799878	303	return -ENOMEM;
7042122f	304	} else {
7663a4aa HK	305	/*
	306	* If we can't find an IIO device by name assume device_name is
	307	* an IIO chrdev
	308	*/
7042122f	309	chrdev_name = strdup(device_name);
e9e45b43 HK	310	if (!chrdev_name)
e9e45b43 HK	311	return -ENOMEM;
7042122f LPC	312	}
	313
	314	fd = open(chrdev_name, 0);
	315	if (fd == -1) {
7042122f	316	ret = -errno;
d9abc615	317	fprintf(stderr, "Failed to open %s\n", chrdev_name);
7042122f LPC	318	goto error_free_chrdev_name;
	319	}
	320
	321	ret = ioctl(fd, IIO_GET_EVENT_FD_IOCTL, &event_fd);
7042122f	322	if (ret == -1 \|\| event_fd == -1) {
7042122f	323	ret = -errno;
672f93b6 LW	324	if (ret == -ENODEV)
	325	fprintf(stderr,
	326	"This device does not support events\n");
	327	else
	328	fprintf(stderr, "Failed to retrieve event fd\n");
5fdb8c61 HK	329	if (close(fd) == -1)
	330	perror("Failed to close character device file");
	331
7042122f LPC	332	goto error_free_chrdev_name;
	333	}
	334
963f54ce HK	335	if (close(fd) == -1) {
	336	ret = -errno;
	337	goto error_free_chrdev_name;
	338	}
5fdb8c61	339
7042122f LPC	340	while (true) {
	341	ret = read(event_fd, &event, sizeof(event));
	342	if (ret == -1) {
	343	if (errno == EAGAIN) {
d9abc615	344	fprintf(stderr, "nothing available\n");
7042122f LPC	345	continue;
7042122f LPC	346	} else {
7042122f	347	ret = -errno;
2b6a6e67	348	perror("Failed to read event from device");
7042122f LPC	349	break;
	350	}
	351	}
	352
09a33f05	353	if (ret != sizeof(event)) {
d9abc615	354	fprintf(stderr, "Reading event failed!\n");
09a33f05 HK	355	ret = -EIO;
	356	break;
	357	}
	358
7042122f LPC	359	print_event(&event);
	360	}
	361
963f54ce HK	362	if (close(event_fd) == -1)
	363	perror("Failed to close event file");
	364
7042122f LPC	365	error_free_chrdev_name:
7042122f LPC	366	free(chrdev_name);
0e799878	367
7042122f LPC	368	return ret;
7042122f LPC	369	}