Added display stuff

MIC-Week3/main.c

@@ -5,8 +5,28 @@
  * Author : kenny
  */ 
 
+#define F_CPU 8000000UL //CPU op 8MHz
 #include <avr/io.h>
+#include <util/delay.h>
+#include <stdlib.h>
 
+typedef struct {
+	unsigned char data[10];
+} PATTERN_STRUCT;
+
+//PIN 0 == SEG A
+//PIN 1 == SEG B
+//PIN 2 == SEG C
+//PIN 3 == SEG D
+//PIN 4 == SEG E
+//PIN 5 == SEG F
+//PIN 6 == SEG G
+//PIN 7 == SEG DP
+
+//Array van patronen die elkaar opvolgen.
+PATTERN_STRUCT pattern[] = {
+	{"Kenneth"}, {"Janco"}, {"Arthur"}, {"Martijn"}, {"Mauro"}, {"Rene"}, {"Remco"}, {"Jannick"}   
+};
 
 int main(void)
 {
@@ -17,9 +37,94 @@ int main(void)
 
 void opgave1()
 {
-	while(1)
-	{
+	lcd_init();
+
+	srand(98126519);
+
+	int r = 8;
+
+	while(1){
 		
+		r = rand() % 8;
+
+		lcd_writeLine(0, pattern[r].data);
+		_delay_ms(1000);
+
+		//clear
+		lcd_command(0x01);
+		_delay_ms(100);
 	}
 }
 
+void lcd_init()
+{
+	DDRC = 0b11111111;
+
+	_delay_ms(100);
+
+	// return home
+	lcd_command( 0x02 );
+	// mode: 4 bits interface data, 2 lines, 5x8 dots
+	lcd_command( 0x28 );
+	// display: on, cursor off, blinking off
+	lcd_command( 0x0C );
+	// entry mode: cursor to right, no shift
+	lcd_command( 0x06 );
+	// RAM address: 0, first position, line 1
+	lcd_command( 0x80 );
+}
+
+void lcd_writeChar( 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)
+
+	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)
+
+	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)
+}
+
+void lcd_writeLine ( 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') {
+		lcd_writeChar( text[count] );
+		count++;
+		_delay_ms(1);
+	}
+}