16F88 ADC Problems

[fanman]

Thanks Steve, but how does the ADC know which port to read in? For example, we could read in PortA.1 or PortB.1

cheers

Mark.

[mister_e]

It's all about it's associated Channel number.

PortB.0.= AN0 = Channel 0 = ADCIN 0, bVar
PortB.7 = AN6 = Channel 6 = ADCIN 6, bVar

PBP manual:

ADCIN

ADCIN Channel,Var

Read the on-chip analog to digital converter Channel and store the result in Var. While the ADC registers can be accessed directly, ADCIN makes the process a little easier

Manual Really said Channel... not pin name.

Further details, open the datasheet, and see how you manually implement it... you also select/assign a channel number to the PIC register, not a pin name.

hth