[PATCH v3 0/6] IIO pulse capture support for TI ECAP

Sergei Shtylyov sergei.shtylyov at cogentembedded.com
Wed Feb 5 15:23:25 EST 2014


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


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

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

> 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 count pulses 
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).

WBR, Sergei

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