[lkml]   [2014]   [Feb]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH v3 0/6] IIO pulse capture support for TI ECAP
On 05/02/14 20:23, Sergei Shtylyov wrote:
> Hello.
> 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
> 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
> --
> To unsubscribe from this list: send the line "unsubscribe linux-iio" in
> the body of a message to
> More majordomo info at

 \ /
  Last update: 2014-02-15 13:21    [W:0.148 / U:20.304 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site