Added opgave b1

2016-02-23 14:52:30 +01:00
parent a349cc58df
commit 066e031d25
12 changed files with 385 additions and 721 deletions
@@ -0,0 +1,118 @@
+/*
+ * lcd.c
+ *
+ * Created: 23-2-2016 14:06:31
+ *  Author: kenny
+ */ 
+  #define F_CPU 8000000UL //CPU op 8MHz
+
+ #include <avr/io.h>
+ #include <util/delay.h>
+ #include <stdlib.h>
+
+ #include "lcd.h"
+
+ //LOCAL
+ void display_char(unsigned char dat);
+ void lcd_command(unsigned char dat);
+
+ void init()
+ {
+ 	DDRC = 0b11111111;
+
+ 	_delay_ms(100);
+
+ 	// return home
+ 	lcd_command( 0x02 );
+ 	// mode: 4 bits interface data, 2 lines, 5x8 dots
+ 	_delay_ms(50);
+ 	lcd_command( 0x28 );
+ 	// display: on, cursor off, blinking off
+ 	_delay_ms(50);
+ 	lcd_command( 0x0C );
+ 	// entry mode: cursor to right, no shift
+ 	_delay_ms(50);
+ 	lcd_command( 0x06 );
+ 	// RAM address: 0, first position, line 1
+ 	_delay_ms(50);
+ 	lcd_command( 0x80 );
+
+ 	_delay_ms(100);
+ }
+
+void display_text( int line, char *text )
+{
+	// eerst de eerste 8 karakters = regel 1
+
+	if(line)
+	{
+		// eerste pos regel 1
+		lcd_command(0xC0);
+	}
+	else
+	{
+		// regel 0
+		lcd_command(0x80);
+	}
+
+	int count = 0;
+
+	while (text[count] != '\0') {
+		display_char( text[count] );
+		count++;
+
+		_delay_ms(1);
+	}
+}
+
+ void set_cursor(int position)
+ {
+	position = position | (1<<7);
+
+	lcd_command(position);
+ }
+
+ void shift_display(int left, int count)
+ {
+	 unsigned char data = left ? 0b00011100 : 0b00011000;
+
+	 for (int i=0; i<count; i++) {
+		 lcd_command(data);
+		 _delay_ms(1);
+	 }
+ }
+
+ void display_char( unsigned char dat )
+ {
+	 PORTC = dat & 0xF0; // hoge nibble
+	 PORTC = PORTC | 0x0C; // Enable on (EN = 1, RS=1),
+	 _delay_ms(1); // wait 1 ms
+	 PORTC = 0x04; // Enable off (EN = 0, RS = 1)
+
+	 _delay_ms(1); // wait 1 ms
+
+	 PORTC = (dat & 0x0F) << 4; // lage nibble
+	 PORTC = PORTC | 0x0C; // Enable on (RS=1),
+	 // start (EN=1)
+	 _delay_ms(1); // wait 1 ms
+	 PORTC = 0x00; // stop
+	 // (EN=0 RS=0)
+ }
+
+ void lcd_command ( unsigned char dat )
+ {
+	 PORTC = dat & 0xF0; // hoge nibble
+	 PORTC = PORTC | 0x08; // data (RS=0),
+	 // start (EN=1)
+	 _delay_ms(1); // wait 1 ms
+	 PORTC = 0x04; // stop (EN = 0)
+
+	 _delay_ms(1); // wait 1 ms
+
+	 PORTC = (dat & 0x0F) << 4; // lage nibble
+	 PORTC = PORTC | 0x08; // data (RS=0),
+	 // start (EN=1)
+	 _delay_ms(1); // wait 1 ms
+	 PORTC = 0x00; // stop
+	 // (EN=0 RS=0)
+ }