Is this still a known missing feature? As this post is from 2013.. I need 
to use flow sensor as well..

On Monday, September 9, 2013 at 10:31:46 AM UTC+7, Ytai wrote:
>
> This is known missing feature. You can work around this by hacking 
> DigitalInputImpl to count the pulses: its setValue() method will get called 
> on every edge.
>
>
> On Fri, Sep 6, 2013 at 11:21 AM, jorge sb <[email protected] 
> <javascript:>> wrote:
>
>> Hi. I want to connect a hall sensor flow meter to ioio.
>> Perhaps, I could use "PulseInput" but after reading ioio-wiki, I see that 
>> I can't do it with it.
>> Really, I need a simple pulse counter but without loosing any pulse.
>> With flow meter I will like to get:
>> - Total liquid flow (accumulated countered pulses)
>> - Instant flow (reading difference between two counts in a measured time).
>>
>> With this sensor I could get a pulse every 50 msec or less at max rate.
>> I think I could loose pulses doing periodic read of digital input.
>>
>> Some suggestion.
>> Thanks.
>>  
>>
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>

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