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SPI or McBSP for Waveform Generator( TI dsp F2812)

Started by vickykulkarni January 10, 2006
Hi 

I am using the TI DSP eZdspf2812 DSP as a waveform generator. It is
interfaced with a microcontroller. Basically the DSP acts as an encoder,
ie it accepts a finite number of bits (1s & 0s) from the microcontroller
and generates a waveform corresponding to the bits. Is the GPIO good for
this interface between the DSP & microcontroller? 

Also the waveform goes to a D/A converter. Is it better to use the McBSP
or the SPI for outputting the waveform? 

Thanks. 

Vikram 


"vickykulkarni" <vickykulkarni@hotmail.com> wrote in message 
news:UoydnTYEJ7pWq1nenZ2dnUVZ_sadnZ2d@giganews.com...
> Hi > > I am using the TI DSP eZdspf2812 DSP as a waveform generator. It is > interfaced with a microcontroller. Basically the DSP acts as an encoder, > ie it accepts a finite number of bits (1s & 0s) from the microcontroller > and generates a waveform corresponding to the bits. Is the GPIO good for > this interface between the DSP & microcontroller?
Why not to use one of the PWM outputs?
> Also the waveform goes to a D/A converter. Is it better to use the McBSP > or the SPI for outputting the waveform?
It all depends on the interface you have for your DAC chip. Either one could work.