On 05/02/14 20:23, Sergei Shtylyov wrote:

Hello.

On 02/05/2014 10:01 PM, Matt Porter wrote:

[...]

quoted

This series adds support for PWM capture devices within IIO and
adds a TI ECAP IIO driver.

quoted

PWM capture devices are supported using a new IIO "pulse" channel type.

quoted

The IIO ECAP driver implements interrupt driven triggered buffer capture
only as raw sample reads are not applicable to this hardware.
Initially, the driver supports a single pulse width measurement with
configurable polarity. The ECAP hardware can support measurement of a
complete period and duty cycle but this is not yet implemented.

How about pulse counting? I have the hardware that can also
countpulses in addition to measuring the periods, so I'm interested
in this work (initially I supported it in driver/misc/ but it got
turned down for iio).

I'm afraid I'd forgotten this completely if you can dig out some links
to that discussion it would be great. Only one I can find right now
is a request that you post an ABI introducing this as a generic pulse
counter rather than a speed measurement.

Good point though - under my previous sketched outline, perhaps

in_waveform_cyclecount_input?  (I would imagine that it doesn't come
out needing scaling!)

WBR, Sergei

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