I have directly connecting adxl 335 pins to xbee pin 0,1 and 2. Xbee pins are configured to analog pins. Without any input to analog pins ADC output shows 3.3v at all pins, please suggest the problem
The XBee S2 only accepts from 0 - 1.2V max on the ADC pins.
Did you enable the pins via the radios firmware? That would be commands D0, D1 and D2.
thanks a lot, I have brought down the adxl output voltage to 0 to 1.2v and it is working fine.