Any probelm here....

[Jack// ani]

Hi all,

I've written this simple program, please see if this is correct.....

#include <16F877A.h>
#fuses XT,NOWDT,NOPROTECT,NOLVP
#use delay(clock=4000000)
#use rs232(baud=9600,xmit=PIN_C6,rcv=PIN_C7)
void main()
{
int16 value;
setup_port_a(ALL_ANALOG);
setup_adc(ADC_CLOCK_INTERNAL);
set_adc_channel(0);

while(1)
{
value=read_adc();
printf("Value is : %x ",value);
delay_ms(500);
}
}

Please tell me how to convert the integer value into floating decimal value?

Thanks

[Ttelmah]

First thing, 'value', is a long integer. The printf commad to print a 'long' in hexadecimal, is %Lx, not %x.
Add the line:
#device ADC=10

as the second line in the program (otherwise the ADC will only return an 8bit value), and there is no point in using a 'long' variable...

Then to get a 'float', something like this:-

[Jack// ani]

Thanks for your helpful reply. Where should I add #device ADC=10, in the source file or header file? When I added this in the first line of the code it shows error "A #device required before this line", and when I replaced it with #device PIC16F877A ADC=10, the error is gone. Also when I place this line on the header file instead on source there is no error! Which one is correct way?

Thanks again

[PCM programmer]

If you're using the CCS compiler, you should reading or at least
browsing all the posts in this forum every day. Many of the questions
that you have will asked by others every 2-3 days. For example,
your question about where to place the #device adc=10 statement
was just recently answered in this thread.
http://www.ccsinfo.com/forum/viewtopic.php?t=22646