need help for libraries

Hello Experts..
i am using MPLAB 8.89 with HI TECH compiler 9.80.

i listen from some people about LIBRARIES for PIC.that they make ease for them.

can anyone tell me that how to use these libraries and from where it can download..??
because i see that its avoid from written many lines in coding and you get good results with precision .

please help me in this way.

for which PIC do you want libraries???? is it for PIC18 series or PIC16 series???

Yi am using pic18f458...

Check this link...
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en010014

its C18 compiler.

i want to download libraries.
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2680&dDocName=en547784
check this link . i download from here a setup of 330mb .it contain usb ,graphic and etc library..

i installed but i dont know how to use.

well those libraries have sample projects which you can directly use or those codes you can copy in your working project and make use of them. There is a proper documentation provided with each project. like application notes etc. rest of the information you can get from source file what exactly they are doing.

this is the code for 1sec delay.now i want that in main function i just call delay not to type these lines ,and in future i make it useable in my other codes.

kindly help me.

//Timer0
//Prescaler 1:32; TMR0 Preload = 3035; Actual Interrupt Time : 1.000001 s

unsigned onesec = 0;

//Place/Copy this part in declaration section
void InitTimer0(){


T0CON	 = 0x84;

TMR0H	 = 0x0B;

TMR0L	 = 0xDB;

INTCONbits.GIE	 = 1;

INTCONbits.TMR0IE	 = 1;

}


//Timer0
//Prescaler 1:32; TMR0 Preload = 3035; Actual Interrupt Time : 1.000001 s


//Place/Copy this part in declaration section
void interrupt isr0(void){


if (INTCONbits.TMR0IF){

INTCONbits.TMR0IF = 0;

TMR0H	 = 0x0B;

TMR0L	 = 0xDB;
onesec++;


//Enter your code here

}

}



#define LED LATBbits.LATB0


void main(){

    TRISB = 0x00;
    PORTB = 0x00;
    InitTimer0();
    while(1){


       if(onesec == 1){

           onesec = 0;
           LED = ~LED;
       }
    }

}

Library means it should be usable and configurable, less hardware dependency on specific hardware peripheral etc. Interrupt should be avoided strictly as it adds hardware dependent code.

If you are writing a delay library then, basic functions should be:

1. initdelaylib(): a function to initialize library, where you can pass which timer to use, what is the clock frequency so that you can calculate your timer pre scalers etc.
2. msleep(): function for delay in ms
3. sleep(): function for delay in seconds

a sample prototype would be

unsigned char initdelaylib(unsigned char timerused, unsigned long oscclock);

Your main function will look like this:

void main () {
        initdelaylib(0, 8000000UL); /* Timer 0 used, osc clock is 8Mhz */
        while (1) {
                LED = ~LED;
                sleep(1);
        }
}

I hope you understood the basic concept of having a library. In simple words, it should be easily portable, usable and configurable.