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question on PIC16F876

 
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microccd



Joined: 08 Aug 2006
Posts: 10

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question on PIC16F876
PostPosted: Thu Aug 10, 2006 3:20 pm     Reply with quote
I am learning to program the microcontrollers, the following test code works fine on the 16F877 development kit. But it doesn't work on 16F876. Any help will be highly appreciated.

Code:

#include <16f876.h>
#device ICD=TRUE
#fuses HS,NOLVP,NOWDT,PUT
#use delay(clock=20000000)

#define YELLOW_LED PIN_B4
#define RED_LED PIN_B5
#define PUSH_BUTTON PIN_A4

#define cutoff 128 //2.5 volts
#define neutral_zone 100 //2.0 volts
main() {
   int reading;
   int i;
   setup_adc_ports(RA0_ANALOG);
   setup_adc(ADC_CLOCK_INTERNAL);
   set_adc_channel(0);

   output_high(PIN_B4);
   output_high(PIN_B5);

   while(true){
       reading = read_adc();
       if(reading>(cutoff-neutral_zone/2) && reading<(cutoff+neutral_zone/2))
         {
         output_high(PIN_B5);
         output_low(PIN_B4);
         i=1;
         }

       else
         {
         output_low(PIN_B5);
         output_high(PIN_B4);
         i=2;
         }
               
       if(i==2)
         {
         while(input(PUSH_BUTTON));
         delay_ms(50);
         while(!input(PUSH_BUTTON));
         }

  }
}

microccd



Joined: 08 Aug 2006
Posts: 10

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PostPosted: Fri Aug 11, 2006 3:24 pm     Reply with quote
help please.
jspencer



Joined: 22 Dec 2003
Posts: 57
Location: Boise, ID USA

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PostPosted: Fri Aug 11, 2006 4:18 pm     Reply with quote
It would be better if you posted this in the General CCS Discussion forum. Might try over there.
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