Re: problem with internal trigger

On Thursday 14 April 2005 07:38 am, walter corbetta wrote:
> hello,
> I am writing a kernel space module for asyncronous input output with
> NI6713 and NI6071e boards.
> I use internal trigger for output board (NI6713) and external trigger
> for input board (NI6071e).
> After module loading I receive following error messages:
>
> ni_mio_common: DMA underrun
> ins_ret -32
> comedi2: ni_pcimio: timed out waiting for dma load
> async->inttrig = -32
>
> appears that _bit13 is not set.
>

You need to feed the beginning of the ao waveform to comedi before sending 
the internal trigger.  See the ao_waveform.c demo.

-- 
Frank