I am aware this thread is a bit old but I have a patch ready that fixes this
behaviour. Is anyone interested? 

Guillermo Rodriguez

El 19/12/2013 15:29, Jürgen Beisert escribió:
> Hi Pawel,
> 
> On Thursday 19 December 2013 12:23:36 Pawel Suchanecki wrote:
>> [...]
>> but also occasionally (1 per hundreds of while loops) it beeps longer
>> than normally, basically up to next loop.
>>
>> How can I get this working?  I need this for my project (the device is
>> going to be sent tomorrow to the client).
> 
> I think it's not defined what electrical level the PWM output pin has, when 
> the 
> software stops the PWM. At least such kind of failure we have seen on 
> different platforms like i.MX SoCs.
> 
> The only solution is to configure the pin to act as a GPIO with a well 
> defined 
> level when the PWM stops. And to reconfigure the pin to act as a PWM output, 
> if the PWM is enabled again.
> 
> Regards,
> Juergen
> 

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