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my circuit is not functioning...

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yjia

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i wrote a program to my project with the tittle fire tracking system with pc monitoring, but i found that the system is not functioning, LEDs are connected to port B, lm35 as inputs are connected to port D, port c as the output connecting with rs232 to transfer the date to computer..hyperterminal used to collecting the data from the system. here is the code:

Code: 
#define LEDA PORTB.F0
#define LEDB PORTB.F1
#define LEDC PORTB.F2
#define LEDD PORTB.F3
#define Buzzer PORTB.F4
#include "built_in.h"


float temp, tempA, tempB, tempC, tempD;
int n;

void adc_conversion(unsigned int sensor_num);


const unsigned char msg1[] = "PIC16F877A";
const unsigned char msg2[] = "TEMP UNIT(v2)";

unsigned char i=0;

unsigned int adc_data = 0x00;
unsigned char buffer[16];
int sensor_num;
unsigned int temp_res;

void wait() {
  delay_ms(1000);
}

void main()
{

        TRISA = 0xFF;
        TRISB = 0;
        TRISC = 0;
        TRISD = 0xFF;
        //PORTB  = 0x00;

       UART1_Init(9600); // Initalize USART (9600 baud rate, 1 stop bit, ...
//Delay_ms(100); // wait uart module to se
        ADCON0 = 0x81;
//Fosc/64 is Selected
//Channel-0 is Selected
//Analog-to-Digital Converter Module is Powered Up
        ADCON1 = 0xC0;
//A/D Result Format Select Bit Right Justified
//and AN0 Channel as Analog Channel


        while(1)
        {
                ADCON0 = 0x81;        //First Channel
                sensor_num = 1;
                adc_conversion(sensor_num);
                ADCON0 = 0x89;
                sensor_num = 2;
                adc_conversion(sensor_num);
                ADCON0 = 0x91;
                sensor_num = 3;
                adc_conversion(sensor_num);
                ADCON0 = 0x99;
                sensor_num = 4;
                adc_conversion(sensor_num);

        }
}




void adc_conversion(unsigned int sensor_num){

                sensor_num--;
                ADCON0 = (0x81)|(sensor_num<<3);
                delay_ms(1000);
                ADCON0.GO  = 1; //Start Conversion
                while(ADCON0.GO  == 1);  {
                adc_data = ADRESH & 0x00FF;
                adc_data = adc_data<<8;
                adc_data = adc_data | ADRESL;
                adc_data = (500)*adc_data/1023;
              //adc_data = temp;

                switch(sensor_num){
                case 0:
                adc_data=tempA;
                break;

                case 1:
                adc_data=tempB;
                break;

                case 2:
                adc_data=tempC;
                break;

                case 3:
                adc_data=tempD;
                break;
                }
              }

       if ((tempA >= 10) ) {
          while(1){
          LEDA = 1;
          delay_ms(1000);
          LEDA=0;
          }
          LEDB = 0;               //        *        and temperature B less than 35'C        *
          LEDC = 0;
          LEDD = 0;
          Buzzer = 1;
       }

       else if ((tempB >= 10) ) {
                                  //        *        LED B and Fan B activated only for *
                LEDA = 0;         //        *        temperature A less than 40'C and        *//lebih 22=26
                while(1){
                LEDB = 1;
                delay_ms(1000);
                LEDB=0;
                }

                LEDC = 0;
                LEDD = 0;
                Buzzer = 1;
       }

       else if ((tempC >= 10) ) {

                LEDA = 0;
                LEDB = 0;
                while(1){
          LEDC = 1;
          delay_ms(1000);
          LEDC=0;
          }
                LEDD = 0;
                Buzzer = 1;
       }

        else if ((tempD >= 10) ) {

                LEDA = 0;
                LEDB = 0;
                LEDC = 0;
                while(1){
          LEDD = 1;
          delay_ms(1000);
          LEDD=0;
          }
                Buzzer = 1;
       }

        else if ((tempA==tempB)&&(tempA >= 10)) {

                while(1){
          LEDA = 1;
          delay_ms(1000);
          LEDA=0;
          }
                while(1){
          LEDB = 1;
          delay_ms(1000);
          LEDB=0;
          }
                LEDC = 0;
                LEDD = 0;
                Buzzer = 1;
       }

       else if ((tempA==tempC)&&(tempA >= 10)) {

                while(1){
          LEDA = 1;
          delay_ms(1000);
          LEDA=0;
          }
                LEDB = 0;
                while(1){
          LEDC = 1;
          delay_ms(1000);
          LEDC=0;
          }
                LEDD = 0;
                Buzzer = 1;
       }

       else if ((tempA==tempD)&&(tempA >= 10)) {

                while(1){
          LEDA = 1;
          delay_ms(1000);
          LEDA=0;
          }
                LEDB = 0;
                LEDC = 0;
                while(1){
          LEDD = 1;
          delay_ms(1000);
          LEDD=0;
          }
                Buzzer = 1;
       }

       else if ((tempB==tempC)&&(tempB >= 10)) {

                LEDA = 0;
                while(1){
          LEDB = 1;
          delay_ms(1000);
          LEDB=0;
          }
                while(1){
          LEDC = 1;
          delay_ms(1000);
          LEDC=0;
          }
                LEDD = 0;
                Buzzer = 1;
       }

       else if ((tempB==tempD)&&(tempB >= 10)) {

                LEDA = 0;
                while(1){
          LEDB = 1;
          delay_ms(1000);
          LEDB=0;
          }
                LEDC = 0;
                while(1){
          LEDD = 1;
          delay_ms(1000);
          LEDD=0;
          }
                Buzzer = 1;
       }

       else if ((tempD==tempC)&&(tempD >= 10)) {

                LEDA = 0;
                LEDB = 0;
                while(1){
          LEDC = 1;
          delay_ms(1000);
          LEDC=0;
          }
                while(1){
          LEDD = 1;
          delay_ms(1000);
          LEDD=0;
          }
                Buzzer = 1;
       }

       else if ((tempA==tempB==tempC)&&(tempA >= 10)) {

                while(1){
          LEDA = 1;
          delay_ms(1000);
          LEDA=0;
          }
                while(1){
          LEDB = 1;
          delay_ms(1000);
          LEDB=0;
          }
                while(1){
          LEDC = 1;
          delay_ms(1000);
          LEDC=0;
          }
                LEDD = 0;
                Buzzer = 1;
       }

       else if ((tempB==tempC==tempD)&&(tempB >= 10)) {

                LEDA = 0;
                while(1){
          LEDB = 1;
          delay_ms(1000);
          LEDB=0;
          }
                while(1){
          LEDC = 1;
          delay_ms(1000);
          LEDC=0;
          }
                while(1){
          LEDD = 1;
          delay_ms(1000);
          LEDD=0;
          }
                Buzzer = 1;
       }

       else if ((tempC==tempD==tempA)&&(tempC >= 10)) {

                while(1){
          LEDA = 1;
          delay_ms(1000);
          LEDA=0;
          }
                LEDB = 0;
                while(1){
          LEDC = 1;
          delay_ms(1000);
          LEDC=0;
          }
                while(1){
          LEDD = 1;
          delay_ms(1000);
          LEDD=0;
          }
                Buzzer = 1;
       }
       else if ((tempD==tempA==tempB)&&(tempD >= 10)) {

                while(1){
          LEDA = 1;
          delay_ms(1000);
          LEDA=0;
          }
                while(1){
          LEDB = 1;
          delay_ms(1000);
          LEDB=0;
          }
                LEDC = 0;
                while(1){
          LEDD = 1;
          delay_ms(1000);
          LEDD=0;
          }
                Buzzer = 1;
       }
       else if ((tempA==tempB==tempC==tempD)&&(tempA >= 10)) {

                while(1){
          LEDA = 1;
          delay_ms(1000);
          LEDA=0;
          }
                while(1){
          LEDB = 1;
          delay_ms(1000);
          LEDB=0;
          }
                while(1){
          LEDC = 1;
          delay_ms(1000);
          LEDC=0;
          }
                while(1){
          LEDD = 1;
          delay_ms(1000);
          LEDD=0;
          }
                Buzzer = 1;
       }

       else {
           LEDA = 0;
           LEDB = 0;
           Buzzer = 0;
       }

do
{
temp_res = ADC_Read(0); // Get 10-bit results of AD conversion
UART1_write(Lo(temp_res)); // Send lower 8 bits to UART
Delay_ms(100);
UART1_write(Hi(temp_res)); // Send upper 8 bits to UART
PORTB = Lo(temp_res); // Send lower 8 bits to PORTB
PORTC = Hi(temp_res); // Send 2 most significant bits to RC7, RC6
}while(1);
}


Kindly help folks :p
regards,
 

Rx pin should be configured as input pin if you need to receive data from PC. There are so many while(1) loops inside the functions and the execution is getting stuck in the first while(1) it encounters after the while(1) in the main().

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else if ((tempD >= 10) ) {
 
                LEDA = 0;
                LEDB = 0;
                LEDC = 0;
                while(1){
          LEDD = 1;
          delay_ms(1000);
          LEDD=0;
          }
                Buzzer = 1;
       }
 
        else if ((tempA==tempB)&&(tempA >= 10)) {
 
                while(1){
          LEDA = 1;
          delay_ms(1000);
          LEDA=0;
          }
                while(1){
          LEDB = 1;
          delay_ms(1000);
          LEDB=0;
          }
                LEDC = 0;
                LEDD = 0;
                Buzzer = 1;
       }
 
       else if ((tempA==tempC)&&(tempA >= 10)) {
 
                while(1){
          LEDA = 1;
          delay_ms(1000);
          LEDA=0;
          }
                LEDB = 0;
                while(1){
          LEDC = 1;
          delay_ms(1000);
          LEDC=0;
          }
                LEDD = 0;
                Buzzer = 1;
       }
 
       else if ((tempA==tempD)&&(tempA >= 10)) {
 
                while(1){
          LEDA = 1;
          delay_ms(1000);
          LEDA=0;
          }
                LEDB = 0;
                LEDC = 0;
                while(1){
          LEDD = 1;
          delay_ms(1000);
          LEDD=0;
          }
                Buzzer = 1;
       }
 
       else if ((tempB==tempC)&&(tempB >= 10)) {
 
                LEDA = 0;
                while(1){
          LEDB = 1;
          delay_ms(1000);
          LEDB=0;
          }
                while(1){
          LEDC = 1;
          delay_ms(1000);
          LEDC=0;
          }
                LEDD = 0;
                Buzzer = 1;
       }
 
       else if ((tempB==tempD)&&(tempB >= 10)) {
 
                LEDA = 0;
                while(1){
          LEDB = 1;
          delay_ms(1000);
          LEDB=0;
          }
                LEDC = 0;
                while(1){
          LEDD = 1;
          delay_ms(1000);
          LEDD=0;
          }
                Buzzer = 1;
       }
 
       else if ((tempD==tempC)&&(tempD >= 10)) {
 
                LEDA = 0;
                LEDB = 0;
                while(1){
          LEDC = 1;
          delay_ms(1000);
          LEDC=0;
          }
                while(1){
          LEDD = 1;
          delay_ms(1000);
          LEDD=0;
          }
                Buzzer = 1;
       }
 
       else if ((tempA==tempB==tempC)&&(tempA >= 10)) {
 
                while(1){
          LEDA = 1;
          delay_ms(1000);
          LEDA=0;
          }
                while(1){
          LEDB = 1;
          delay_ms(1000);
          LEDB=0;
          }
                while(1){
          LEDC = 1;
          delay_ms(1000);
          LEDC=0;
          }
                LEDD = 0;
                Buzzer = 1;
       }
 
       else if ((tempB==tempC==tempD)&&(tempB >= 10)) {
 
                LEDA = 0;
                while(1){
          LEDB = 1;
          delay_ms(1000);
          LEDB=0;
          }
                while(1){
          LEDC = 1;
          delay_ms(1000);
          LEDC=0;
          }
                while(1){
          LEDD = 1;
          delay_ms(1000);
          LEDD=0;
          }
                Buzzer = 1;
       }
 
       else if ((tempC==tempD==tempA)&&(tempC >= 10)) {
 
                while(1){
          LEDA = 1;
          delay_ms(1000);
          LEDA=0;
          }
                LEDB = 0;
                while(1){
          LEDC = 1;
          delay_ms(1000);
          LEDC=0;
          }
                while(1){
          LEDD = 1;
          delay_ms(1000);
          LEDD=0;
          }
                Buzzer = 1;
       }
       else if ((tempD==tempA==tempB)&&(tempD >= 10)) {
 
                while(1){
          LEDA = 1;
          delay_ms(1000);
          LEDA=0;
          }
                while(1){
          LEDB = 1;
          delay_ms(1000);
          LEDB=0;
          }
                LEDC = 0;
                while(1){
          LEDD = 1;
          delay_ms(1000);
          LEDD=0;
          }
                Buzzer = 1;
       }
       else if ((tempA==tempB==tempC==tempD)&&(tempA >= 10)) {
 
                while(1){
          LEDA = 1;
          delay_ms(1000);
          LEDA=0;
          }
                while(1){
          LEDB = 1;
          delay_ms(1000);
          LEDB=0;
          }
                while(1){
          LEDC = 1;
          delay_ms(1000);
          LEDC=0;
          }
                while(1){
          LEDD = 1;
          delay_ms(1000);
          LEDD=0;
          }
                Buzzer = 1;
       }
 
Last edited:

alright the while loop is to blink those LEDs..any others method instead of using while loop to blink the LED?
 

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