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compiler problem

 
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rajasekar



Joined: 02 May 2008
Posts: 1

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compiler problem
PostPosted: Fri May 02, 2008 11:17 am     Reply with quote
Sad
I am using 16F684 with ICD in debugging mode. I am getting the following error.

My code is
int16 a,b;

void main()
{

setup_adc_ports(NO_ANALOGS|VSS_VDD);
setup_adc(ADC_OFF);
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DISABLED,0,1);
setup_comparator(NC_NC_NC_NC);
setup_vref(FALSE);
// setup_oscillator(False);
for(;;){
a=563;
b=500;
if(a < b)a=0;
else a =1;
// TODO: USER CODE!!
}

the if statement always considers "a & b " as characters and "a" becomes zero.......!!!!
Am I missing any compiler option... Please advice....


Thanks in advance
_________________
hi
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Fri May 02, 2008 11:31 am     Reply with quote
Quote:
the if statement always considers "a & b " as characters

There is no way that it considers them to be characters. The compiler
can't do that. It can't magically turn a variable name into a character.
The problem is caused by something else. It's probably caused by
some error that you are making in the operation of the compiler or the
CCS debugger.

I made the test program shown below, and ran it in the MPLAB simulator.
I put a breakpoint on the delay_cycles() line and displayed 'a' in a Watch
window. I then pressed the F9 to run to the breakpoint, and the watch
window showed the value of 'a' is 1. I pressed F9 several more times
to do it again, and the value is always 1. I tested this with compiler
version 4.071.
Code:

#include <16F684.H>
#fuses XT, NOWDT, NOPROTECT, BROWNOUT, PUT
#use delay(clock = 4000000)

int16 a,b;

void main()
{

setup_adc_ports(NO_ANALOGS|VSS_VDD);
setup_adc(ADC_OFF);
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DISABLED,0,1);
setup_comparator(NC_NC_NC_NC);
setup_vref(FALSE);
// setup_oscillator(False);
for(;;){
a=563;
b=500;
if(a < b)a=0;
else a =1;
delay_cycles(1);
}
 
}
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