Simple audio in-out code for the ADSP-BF706 EZ-KIT

In my TI books for the TMS320C6713 By Rulph Casaing he mentions ping pong

and double buffering, but circular DMA is better because it works

preemptively while you write behind the bytes getting preempted. I show

this method in one of my samples...It might be the one where I show Fourier

Series summation on the BF706...That shows how to transfer signals on the

fly via your DMA method but I modified it to work with very large buffers,

so you can do a write behind directly into the circular buffer. I have done

an FPGA design for a defense contractor showing that 1024 point FFT can run

continuously via an efficient stereo pair FIFO buffer on input and outputs.

Definitelly can be done! Wanna make sure you don't overrun your FIFO so

tune it properly by choosing an acceptable size so that the font does not

catch up to the tail...The Blackfins also allow linked list buffers

probably for graphics buffers which is most likely what you are describing.

Or perhaps cascading filter buffers...

On Sun, Jul 15, 2018, 4:41 AM UweS <analog@analog-vm.hosted.jivesoftware.com>

In my TI books for the TMS320C6713 By Rulph Casaing he mentions ping pong

and double buffering, but circular DMA is better because it works

preemptively while you write behind the bytes getting preempted. I show

this method in one of my samples...It might be the one where I show Fourier

Series summation on the BF706...That shows how to transfer signals on the

fly via your DMA method but I modified it to work with very large buffers,

so you can do a write behind directly into the circular buffer. I have done

an FPGA design for a defense contractor showing that 1024 point FFT can run

continuously via an efficient stereo pair FIFO buffer on input and outputs.

Definitelly can be done! Wanna make sure you don't overrun your FIFO so

tune it properly by choosing an acceptable size so that the font does not

catch up to the tail...The Blackfins also allow linked list buffers

probably for graphics buffers which is most likely what you are describing.

Or perhaps cascading filter buffers...

On Sun, Jul 15, 2018, 4:41 AM UweS <analog@analog-vm.hosted.jivesoftware.com>