I am a bit of a newbie at this so my apologies if I am doing something exceptionally silly.

I am trying to transmit a single ADC channel (a potentiometer) of data between my two xbee modules. One is on an USB explorer the other just a regular board.

I have configured my xbees fine, can open the serial channel in Matlab and get a steady signal through. Using this code:

s = serial('COM3');

fopen(s);

A=fread(s, 100);

However, I tried to parse the A variable as follows and I get 1023 always for valueA despite known changes (measured with a multimeter) in the input voltage from 2V down to as low as 0.1 V. I tried switching to a different input channel and still have the same problem.

n=find(A==126); % find data chunk header

for i=1:length(n) % compensation for change in bit format btwn xbee and computer

eleventh_number=A(n(i)+11);

twelfth_number=A(n(i)+12);

valueA(i)= bitshift(eleventh_number,8) + twelfth_number;

end

%% Conversion into voltage, Very uncertain of this conversion

voltA=(1024.*valueA+600)./1200; % from NorthWesternU website

Any help would be greatly appreciated. I've searched for examples in Matlab to no avail. Thanks!