Depending on the PIC and port pin, a "1" will be any voltage over 1.8 to 2 volts. 3.3 will look like a "1", not a "0". If the PIC is not seeing a "1", something else is wrong. Check the "Tris registers, and if you want to prove the trip point of the PIC yourself, hook a 10K potentiometer to B+ and ground.Next hook the wiper to the pin in question. Write a short program to turn on a LED when the pin goes positive(and off when a zero).Next, measure the voltage.If it's over 3 volts, I'll buy the coffee!