forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
371 lines
8.8 KiB
371 lines
8.8 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* Industrialio event test code. |
|
* |
|
* Copyright (c) 2011-2012 Lars-Peter Clausen <[email protected]> |
|
* |
|
* 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", |
|
[IIO_MOD_O2] = "o2", |
|
}; |
|
|
|
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: |
|
case IIO_MOD_O2: |
|
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; |
|
}
|
|
|