iio: Add IIO_DELTA_ANGL channel type

The delta angle is defined as a piece-wise integration of angular velocity data. The delta angle represents the amount of angular displacement between two consecutive measurements and it is measured in radians. In order to track the total angular displacement during a desired period of time, simply sum-up the delta angle samples acquired during that time. IIO currently does not offer a suitable channel type for this type of measurements hence this patch adds it.

Ramona Bolboaca committed 3 years ago

Commit 744f4991 parent 8c337434 files · +26 −0Browse files

Unified · Split

4 files

Documentation/ABI/testing/sysfs-bus-iio +22 −0
drivers/iio/industrialio-core.c +1 −0
include/uapi/linux/iio/types.h +1 −0
tools/iio/iio_event_monitor.c +2 −0

Documentation/ABI/testing/sysfs-bus-iio+22−0

@@ -279,6 +279,20 @@ Description: · 278 unmodified lines
279	279	but should match other such assignments on device).
280	280	Units after application of scale and offset are m/s^2.
281	281
	282	+What: /sys/bus/iio/devices/iio:deviceX/in_deltaangl_x_raw
	283	+What: /sys/bus/iio/devices/iio:deviceX/in_deltaangl_y_raw
	284	+What: /sys/bus/iio/devices/iio:deviceX/in_deltaangl_z_raw
	285	+KernelVersion: 6.5
	286	+Contact: linux-iio@vger.kernel.org
	287	+Description:
	288	+ Angular displacement between two consecutive samples on x, y or
	289	+ z (may be arbitrarily assigned but should match other such
	290	+ assignments on device).
	291	+ In order to compute the total angular displacement during a
	292	+ desired period of time, the application should sum-up the delta
	293	+ angle samples acquired during that time.
	294	+ Units after application of scale and offset are radians.
	295	+
282	296	What: /sys/bus/iio/devices/iio:deviceX/in_angl_raw
283	297	What: /sys/bus/iio/devices/iio:deviceX/in_anglY_raw
284	298	KernelVersion: 4.17
@@ -461,6 +475,7 @@ What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale · 176 unmodified lines
461	475	What: /sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale
462	476	What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_scale
463	477	What: /sys/bus/iio/devices/iio:deviceX/in_countY_scale
	478	+What: /sys/bus/iio/devices/iio:deviceX/in_deltaangl_scale
464	479	What: /sys/bus/iio/devices/iio:deviceX/in_angl_scale
465	480	What: /sys/bus/iio/devices/iio:deviceX/in_intensity_x_scale
466	481	What: /sys/bus/iio/devices/iio:deviceX/in_intensity_y_scale
@@ -1332,6 +1347,9 @@ Description: · 865 unmodified lines
1332	1347	What: /sys/.../iio:deviceX/bufferY/in_accel_x_en
1333	1348	What: /sys/.../iio:deviceX/bufferY/in_accel_y_en
1334	1349	What: /sys/.../iio:deviceX/bufferY/in_accel_z_en
	1350	+What: /sys/.../iio:deviceX/bufferY/in_deltaangl_x_en
	1351	+What: /sys/.../iio:deviceX/bufferY/in_deltaangl_y_en
	1352	+What: /sys/.../iio:deviceX/bufferY/in_deltaangl_z_en
1335	1353	What: /sys/.../iio:deviceX/bufferY/in_anglvel_x_en
1336	1354	What: /sys/.../iio:deviceX/bufferY/in_anglvel_y_en
1337	1355	What: /sys/.../iio:deviceX/bufferY/in_anglvel_z_en
@@ -1362,6 +1380,7 @@ Description: · 24 unmodified lines
1362	1380	Scan element control for triggered data capture.
1363	1381
1364	1382	What: /sys/.../iio:deviceX/bufferY/in_accel_type
	1383	+What: /sys/.../iio:deviceX/bufferY/in_deltaangl_type
1365	1384	What: /sys/.../iio:deviceX/bufferY/in_anglvel_type
1366	1385	What: /sys/.../iio:deviceX/bufferY/in_magn_type
1367	1386	What: /sys/.../iio:deviceX/bufferY/in_incli_type
@@ -1416,6 +1435,9 @@ What: /sys/.../iio:deviceX/bufferY/in_voltage_q_index · 48 unmodified lines
1416	1435	What: /sys/.../iio:deviceX/bufferY/in_accel_x_index
1417	1436	What: /sys/.../iio:deviceX/bufferY/in_accel_y_index
1418	1437	What: /sys/.../iio:deviceX/bufferY/in_accel_z_index
	1438	+What: /sys/.../iio:deviceX/bufferY/in_deltaangl_x_index
	1439	+What: /sys/.../iio:deviceX/bufferY/in_deltaangl_y_index
	1440	+What: /sys/.../iio:deviceX/bufferY/in_deltaangl_z_index
1419	1441	What: /sys/.../iio:deviceX/bufferY/in_anglvel_x_index
1420	1442	What: /sys/.../iio:deviceX/bufferY/in_anglvel_y_index
1421	1443	What: /sys/.../iio:deviceX/bufferY/in_anglvel_z_index

drivers/iio/industrialio-core.c+1−0

@@ -90,6 +90,7 @@ static const char * const iio_chan_type_name_spec[] = { · 89 unmodified lines
90	90	[IIO_POSITIONRELATIVE] = "positionrelative",
91	91	[IIO_PHASE] = "phase",
92	92	[IIO_MASSCONCENTRATION] = "massconcentration",
	93	+ [IIO_DELTA_ANGL] = "deltaangl",
93	94	};
94	95
95	96	static const char * const iio_modifier_names[] = {

include/uapi/linux/iio/types.h+1−0

@@ -47,6 +47,7 @@ enum iio_chan_type { · 46 unmodified lines
47	47	IIO_POSITIONRELATIVE,
48	48	IIO_PHASE,
49	49	IIO_MASSCONCENTRATION,
	50	+ IIO_DELTA_ANGL,
50	51	};
51	52
52	53	enum iio_modifier {

tools/iio/iio_event_monitor.c+2−0

@@ -59,6 +59,7 @@ static const char * const iio_chan_type_name_spec[] = { · 58 unmodified lines
59	59	[IIO_POSITIONRELATIVE] = "positionrelative",
60	60	[IIO_PHASE] = "phase",
61	61	[IIO_MASSCONCENTRATION] = "massconcentration",
	62	+ [IIO_DELTA_ANGL] = "deltaangl",
62	63	};
63	64
64	65	static const char * const iio_ev_type_text[] = {
@@ -173,6 +174,7 @@ static bool event_is_known(struct iio_event_data *event) · 108 unmodified lines
173	174	case IIO_POSITIONRELATIVE:
174	175	case IIO_PHASE:
175	176	case IIO_MASSCONCENTRATION:
	177	+ case IIO_DELTA_ANGL:
176	178	break;
177	179	default:
178	180	return false;

iio: Add IIO_DELTA_ANGL channel type

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