hi man ,
the project contain 2 pic16f690 one as TX and the other is RX
i have ADPCM code for encoder and decoder for PIC16f690 , and the simulation for it, the problem i face is that it always give me 00,,08,,09 in the output in the tx, it should be change as the input is voice, can you handle this project to see what is the problem ,
i can send you files if you want .
regards and thanks