Anonymous
Anonymous asked in Science & MathematicsEngineering · 1 decade ago

pls explain this program..pls..?

can anyone pls explain this program to me?its an emergency n this is very important for my final yr engnr project.I need the explaination by thursday.so pls help..

#include <pic.h>

#include <stdio.h>

#include <delay10.c>

static void interrupt IntRoutine();

void Send();

short int Flg=0;

int Cnt = 0,Oflow=0,Mytime=0,Adval,Hbc,H...

char St1[4],St2[4],St4[3];

void main()

{

TRISB = 0x00;

PORTB = 0x00;

TRISD = 0x00;

PORTD = 0x00;

TRISE = 0x00;

TRISC = 0xbf;

ADCON0 = 0x81;

ADCON1 = 0x82;

SPBRG = 64;

TXEN = 1;

SYNC = 0;

BRGH = 1;

SPEN = 1;

CREN = 1;

DelayMs(200);

DelayMs(200);

DelayMs(200);

DelayMs(200);

DelayMs(200);

LCD_SendCmd(0x01);

LCD_SendCmd(0x80);

LCD_puts("Ebc:");

LCD_SendCmd(0x88);

LCD_puts("Tim:");

LCD_SendCmd(0xc3);

LCD_puts("Ebr: Bpm");

T1CON = 0x00; // Enable Timer1

PEIE = 1;

GIE = 1;

TMR1IF = 0;

TMR1IE = 1;

TMR1L = 0xaf;

TMR1H = 0x3c;

TMR1ON = 1;

for(;;)

{

if(Oflow)

{

Oflow = 0;

Mytime++;

}

ADCON0 = 0x81;

DelayUs(50);

ADGO = 1;

while(ADGO) continue;

Adval = (ADRESH * 256) + ADRESL;

if(Adval < 100 && Flg == 0)

{

Hbc++;

Flg = 1;

}

if(Adval > 100 && Flg == 1)

{

Flg = 0;

}

if(Mytime > 3 && Mytime < 60) RD0 = 0;

if(Mytime >= 60)

{

Mytime = 0;

Ebr = Ebc;

if(Ebc > 15)

{

RD0 = 1;

}

Ebc = 0;

}

sprintf(St1,"%3d",Ebc);

LCD_SendCmd(0x84);

LCD_puts(St1);

sprintf(St2,"%3d",Ebr);

LCD_SendCmd(0xc8);

LCD_puts(St2);

sprintf(St4,"%02d",Mytime);

LCD_SendCmd(0x8c);

LCD_puts(St4);

Send();

DelayMs(2);

}

}

static void interrupt IntRoutine()

{

if(TMR1IF)

{

TMR1IF = 0;

Cnt++;

if(Cnt >= 50)

{

Cnt = 0;

Oflow = 1;

}

TMR1ON = 0;

TMR1L = 0xaf;

TMR1H = 0x3c;

TMR1ON = 1;

}

3 Answers

Relevance
  • justme
    Lv 7
    1 decade ago
    Favorite Answer
  • MarkG
    Lv 7
    1 decade ago

    Looks like you have some C for a microcontroller. Specifically a Microchip brand PIC. I can't tell if its an 8 or 16 bit chip nor if the LCD is serial based or controller based. But I suspect that it is a serial LCD.

    Main is configuring the Analog to Digital Converters and the I/O Ports

    You should be able to look up the data sheet on microchip for the specific chip and be able to work out the code. You will also need to know what is connected to the various pins of the microcontroller to fully understand whatthe code is doing..

  • radich
    Lv 4
    3 years ago

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