I would like to learn PIC, and i bought sk40c with a PIC18F4550.
from the cytron given sample tutorial, i had download the <PIC18F_USB Sample Source Code> and try to compile it to hex file by using MPLAB.
Here is the download code, i only exchange the the first line from #include<p18f4520.h> into #include<p18f4550.h> also cannot.
Anyone help me?
- CODE: SELECT_ALL_CODE
//==========================================================================
// Author : CYTRON TECHNOLOGIES SDN BHD
// Project : SK40C sample code for PIC18f4520
// Project description : Blink LED1 and LED2 like police car
//
//==========================================================================
// include
//==========================================================================
#include<p18f4550.h>
// configuration bit
//==========================================================================
#pragma config OSC = HS // HS oscillator
#pragma config FCMEN = OFF // Fail-Safe Clock Monitor disabled
#pragma config IESO = OFF // Oscillator Switchover mode disabled
#pragma config PWRT = OFF // PWRT disabled
#pragma config BOREN = OFF // Brown-out Reset disabled in hardware and software
#pragma config WDT = OFF // WDT disabled (control is placed on the SWDTEN bit)
#pragma config MCLRE = ON // MCLR pin enabled; RE3 input pin disabled
#pragma config PBADEN = OFF // PORTB<4:0> pins are configured as digital I/O on Reset
#pragma config CCP2MX = PORTC // CCP2 input/output is multiplexed with RC1
#pragma config LVP = OFF // Single-Supply ICSP disabled
#pragma config XINST = OFF // Extended Instruction Set
// define
//==========================================================================
#define LED1 LATBbits.LATB6
#define LED2 LATBbits.LATB7
#define SW1 PORTBbits.RB0
#define SW2 PORTBbits.RB1
#define XTAL_FREQ 20MHZ /* Crystal frequency in MHz */
#define MHZ *1000L /* number of kHz in a MHz */
#define KHZ *1 /* number of kHz in a kHz */
#if XTAL_FREQ >= 12MHZ
#define DelayUs(x) { unsigned char _dcnt; \
_dcnt = (x)*((XTAL_FREQ)/(12MHZ)); \
while(--_dcnt != 0) \
continue; }
#else
#define DelayUs(x) { unsigned char _dcnt; \
_dcnt = (x)/((12MHZ)/(XTAL_FREQ))|1; \
while(--_dcnt != 0) \
continue; }
#endif
// function prototype
//==========================================================================
void init(void);
void DelayMs(unsigned char);
// global variable
//==========================================================================
// main function
//==========================================================================
void main(void)
{
unsigned char i;
init(); // initialise PIC
LED1 = 0; // off LED1
LED2 = 0; // off LED2
while(1)
{
for(i=8; i>0 ; i--) // looping for 8 times (4 times blink)
{
LED1 ^= 1; // toggle LED1
DelayMs(110); // delay 110ms
}
DelayMs(800); // delay 800ms
for(i=8; i>0 ; i--) // looping for 8 times (4 times blink)
{
LED2 ^= 1; // toggle LED2
DelayMs(110); // delay 110ms
}
DelayMs(800); // delay 800ms
while( !SW1 || !SW2 ); // Stop blinking if either SW1 or SW2 is being pressed
}
}
// functions
//==========================================================================
void init(void) // initialise function
{
//tris
TRISBbits.TRISB0=1; //configure PORTB I/O direction
TRISBbits.TRISB1=1; //configure PORTB I/O direction
TRISBbits.TRISB6=0; //configure PORTB I/O direction
TRISBbits.TRISB7=0; //configure PORTB I/O direction
}
void DelayMs(unsigned char cnt) // delay function (mili second)
{
#if XTAL_FREQ <= 2MHZ
do {
DelayUs(996);
} while(--cnt);
#endif
#if XTAL_FREQ > 2MHZ
unsigned char i;
do {
i = 4;
do {
DelayUs(250);
} while(--i);
} while(--cnt);
#endif
}
The error after compile is as below:
