Ive got a project which makes use of the sparkfun wifi chip and requires 3 shift registers. I started out using pins 0,1,2 to control shift register one, 3,4,5 to control shift register two and 6,7,8 shift register three. I was under the impression that the wifly shield only used pins 9-13 but since writing my sketch pins 0,1 (tx and rx) have not responded as expected.
To overcome this can I use the analogue pins to control my shift register?
Is there a special way to declare these pins, or is it simply a case of using pins 14,15, and 16.