hai
i was using the audio codec aic3204 and i want to use the dma with ping pong for real time signal processing for doing this so i has verified the c5505 usbstick audio filter demo application and i got some idea about the code in this example it does not read the data from codec mike it simply reads data from source buffer and put in the destination buffer by using the i2s we hear the two tones filtered and unfiltered sine wave.
by doing this in the chip support library while enabling the left channel_0 and right channel_1 for rece3ive left and right buffers and start the dma . in the interrupt routine only one channel data is available and it reads only zero.