Maskinnära programmering 6B2266
Maskinnära programmering 6B2266
Maskinnära programmering 6B2266
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Testprogram lcd16x1 "Hello world! "<br />
/* lcd16x1.c LCD-display 4 bit data (nibble) conn. to PIC 16F628 */<br />
/* GTC-1601-TR6N0C 1 (2) line 2x8 example: "Hello wo" + "rld! "*/<br />
/* ELFA 75-511-53 c:a 110:- */<br />
/* Internal ic: KS0066U used pins: D4-D7, RS, EN, RD/!WR=0 */<br />
/*<br />
________ ________<br />
| \/ | RD/!WR = 0<br />
D6--|RA2 16F628 RA1|--D5 (only write, wait while busy)<br />
D7--|RA3<br />
RA0|--D4<br />
|RA4 RA7/OSC1|<br />
|RA5/MCLR RA6/OSC2|<br />
+5V--|Vss<br />
Vdd|--GND<br />
|RB0/INT (RB7)/PGD|<br />
|RB1/Rx (RB6)/PGC|<br />
|RB2/Tx<br />
RB5|--RS<br />
EN--|RB3/CCP (RB4)/PGM|<br />
|__________________|<br />
*/<br />
#include "16F628.h"<br />
#pragma config |= 0x3ff0<br />
// use internal 4MHz oscillator<br />
/* I/O-pin definitions */<br />
/* change if you need a pin for a different purpose */<br />
#pragma bit RS @ PORTB.5<br />
#pragma bit EN @ PORTB.3<br />
#pragma bit D7 @ PORTA.3<br />
#pragma bit D6 @ PORTA.2<br />
#pragma bit D5 @ PORTA.1<br />
#pragma bit D4 @ PORTA.0<br />
#include "delays.c"<br />
void delay( char ); // ms delay function from file delays.c<br />
void lcd_init( void );<br />
void lcd_putchar( char );<br />
char text1( char );<br />
char text2( char );<br />
void main( void)<br />
{<br />
CM0=1; CM1=1; CM2=1; // no comparators on PORTA pins<br />
/* I/O-pin direction in/out definitions, change if needed */<br />
TRISB = 0b011.0.1.0.111; // output to RS and EN<br />
TRISA = 0b1111.0000; // output to D4-D7<br />
char i;<br />
lcd_init();<br />
RS = 1; // LCD in character-mode<br />
// display the 8 char text1() sentence<br />
for(i=0; i
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