A/D conversion for temperature sensor LM35

[maria]

I'm trying to do A/D conversion for the Temperature sensor LM35 and my code doesnt work, can any of you guys tell me what's wrong with my code.. Code:


the error that gives me is this:

Error 23 "C:testadtemp.c" Line 6(8,9): Can not change device type this far into the code
*** Error 48 "C:testadtemp.c" Line 6(9,12): Expecting a (
*** Error 43 "C:testadtemp.c" Line 6(13,14): Expecting a declaration
is in the line where i declared
#device ADC=8

#include <16F877.h>
#include <STDLIB.H>

#device ADC=8 //set for 8 bit A/D
#use delay(clock=4000000)

int Tempvalue=0;
int Temp;

//Define the A/D control register
#BYTE ADCON0=0X01

//Check Temperature Function
void check_Temp() {


set_adc_channel(0);
while(input(PIN_A0))
{
Tempvalue=read_adc();
}

if(Tempvalue>=0) //64 to test put 0
{ Temp=1;
output_high(PIN_B0);
}
else
{ Temp=0;
output_low(PIN_B0);
}

}








HELP !!!

[LomasS]

It looks like a conflict between the #device and something in STDLIB.H.
Place the #device ADC=8 between the other #includes:

#include <16F877.h>
#device ADC=8
#include <STDLIB.H>

That compiled OK for me.

Note that your code is incomplete as there is no main() function.

Steve.

[Mark]

Make sure that you only have 1 C file if using MPLAB. A common mistake is to use multiple source files in the project workspace. You cannot do this. You must include any C files in your main C file by using the #include

[languer]

Look here to understand why the location of the following command is important.