Maskinnära programmering 6B2266

* ****************** FUNCTIONS ****************************** */
char text1( char x) // this is the way to store a sentence
{ skip(x); /* internal function CC5x. */
#pragma return[] = "Hello wo" // 8 chars max!
}
char text2( char x) // this is the way to store a sentence
{ skip(x); /* internal function CC5x. */
#pragma return[] = "rld! " // 8 chars max!
}
void lcd_init( void ) // must be run once before using the display
{ delay(40); // give LCD time to settle
/* Function set */
RS = 0; // LCD in command-mode
// 0010.xxxx 4-bit mode
// 0010.xxxx 4-bit mode
lcd_putchar(0b0010.0010);
// 0010.xxxx 4-bit mode three times!
// The display is actual two lines after each other
// 1.0.xxxxxx two line.display off.xxxxxx
lcd_putchar(0b0010.1.0.00);
/* Display ON/OFF Control */
// 0000.xxxx
// 1.1.0.0.xxxx 1.display on.cursor off.blink off.xxxx
lcd_putchar(0b0000.1.1.0.0);
/* Display clear */
// 0000.xxxx
// 0001.xxxx
lcd_putchar(0b0000.0001);
/* Entry mode set */
// 0000.xxxx
// 01.1.0.xxxx 01.increment mode.shift off.xxxx
lcd_putchar(0b0000.01.1.0);
// initialization is done!
}
void lcd_putchar( char data )
{ // must set LCD-mode before calling this function!
// RS = 1 LCD in character-mode
// RS = 0 LCD in command-mode
// upper Nibble
D7 = data.7;
D6 = data.6;
D5 = data.5;
D4 = data.4;
EN = 0;
EN = 1;
delay(5);
// lower Nibble
D7 = data.3;
D6 = data.2;
D5 = data.1;
D4 = data.0;
EN = 0;
EN = 1;
delay(5);
}
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