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iio: core: Introduce IIO_VELOCITY and IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z

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Some devices export the current speed value of the user.

One of this devices is Freescale's MMA9553L
(http://www.freescale.com/files/sensors/doc/ref_manual/MMA9553LSWRM.pdf)
that computes the speed of the user based on the number of steps and
stride length.

Introduce a new channel type VELOCITY and a modifier for the magniture or
norm of the velocity vector, IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z.

Signed-off-by: Irina Tirdea <[email protected]>
Signed-off-by: Jonathan Cameron <[email protected]>
This commit is contained in:
Irina Tirdea 2015-01-11 21:10:09 +02:00 • committed by Jonathan Cameron
commit 5a1a932981
3 changed files with 14 additions and 0 deletions
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2
drivers/iio/industrialio-core.c
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@ -74,6 +74,7 @@ static const char * const iio_chan_type_name_spec[] = {
[IIO_STEPS] = "steps",
[IIO_ENERGY] = "energy",
[IIO_DISTANCE] = "distance",
[IIO_VELOCITY] = "velocity",
};
static const char * const iio_modifier_names[] = {
@ -99,6 +100,7 @@ static const char * const iio_modifier_names[] = {
[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)",
};
/* relies on pairs of these shared then separate */