configuring AD converter in a 12F615

[klantz12]

Can anyone help me with configuring the AD converter in 16F877A on the labX1 board? I am using MicroCode Studio-pbp and i have tried the following code from the help button and from another post i read.


ADCON1=132 ' 128 + 4 = %10000100 'Left just 3 analog inputs rest digital
TrisA = 255 'all inputs for the a to d
Define ADC_BITS 10 ' Set number of bits in result
Define ADC_CLOCK 3 ' Set clock source (rc = 3)
Define ADC_SAMPLEUS 50 ' Set sampling time in microseconds

AdcIn 1, W0
AdcIn 3, W1


The error says that ADCIN needs a variable.

My assignment is just to read the AD input from the three potentiometers at A0 A1 and A3.

Pretty lost. Thanks! also, i didnt know how to start a new thread so sorry for posting in ya'lls.

Kay

[mackrackit]

didnt know how to start a new thread so sorry for posting in ya'lls.

Big button near the top of forum pages, "+ Post New Thread".

[tekart]

AdcIn 1, W0
AdcIn 3, W1

The error says that ADCIN needs a variable.

Kay, I'm assuming that you have migrated to the PIC world from Basic Stamps and you may not have defined your variables - something you do not need to do in Stamps. So you need:

W0 var byte

to define W0 as a byte variable - these definitions usually go near the top of the page.

[Bruce]

For 10-bit A/D you'll want to define W0 & W1 as WORD sized vars...;o)