working

4 files changed, 178 insertions, 29 deletions

diff --git a/floppyMusic/floppy.c b/floppyMusic/floppy.c
index 440508b..9d6bd54 100644
--- a/floppyMusic/floppy.c
+++ b/floppyMusic/floppy.c
@@ -17,7 +17,7 @@ ISR(TIMER0_OVF_vect)
 
 	for(uint8_t i = 0; i < 8; i++)
 	{
-		if(floppy_nextrun[i] == timer_overflow_counter )
+		if(floppy_nextrun[i] == timer_overflow_counter && floppy_frequencies[i] > 0)
 		{
 			floppy_nextrun[i] += floppy_frequencies[i];
 			floppy_pulse(i);
@@ -87,7 +87,12 @@ void floppy_setup(char *_pulse_port, char *_pulse_ddr, char *_direction_port, ch
 	}
  }
 
- int floppy_calc_freq(uint32_t _f_hz)
+ uint8_t floppy_calc_freq(uint32_t _f_hz)
  {
-	
+	if(_f_hz < 31)
+		return 255;
+	if(_f_hz > 7813)
+		return 1;
+
+	return 7913 / _f_hz;
  }
\ No newline at end of file
diff --git a/floppyMusic/floppy.h b/floppyMusic/floppy.h
index f8b1c26..cc069c0 100644
--- a/floppyMusic/floppy.h
+++ b/floppyMusic/floppy.h
@@ -30,7 +30,7 @@ void floppy_set_frequency(uint8_t _floppy_id, uint8_t _freq);
 
 void floppy_pulse(uint8_t _floppy_id);
 
-int floppy_calc_freq(uint32_t _f_hz);
+uint8_t floppy_calc_freq(uint32_t _f_hz);
 
 
 #endif /* FLOPPY_H_ */
\ No newline at end of file
diff --git a/floppyMusic/main.c b/floppyMusic/main.c
index 09ca8d0..18e8dbf 100644
--- a/floppyMusic/main.c
+++ b/floppyMusic/main.c
@@ -5,6 +5,28 @@
  * Author : Jonas
  */ 
 
+ #define c 130
+ #define d 147
+ #define e 165
+ #define f 175
+ #define g 195
+ #define gS 208
+ #define a 220
+ #define aS 228
+ #define b 233
+ #define cH 261
+ #define cSH 277
+ #define dH 294
+ #define dSH 311
+ #define eH 330
+ #define fH 349
+ #define fSH 370
+ #define gH 390
+ #define gSH 415
+ #define aH 440
+
+ #define _GET_UBBR(BAUD) ( (F_CPU / 16 * BAUD) - 1)
+
  #ifndef F_CPU
  #define F_CPU 16000000UL //CPU Running at 16MHz
  #endif
@@ -12,25 +34,139 @@
 #include <avr/io.h>
 
 #include "floppy.h"
-//#include "uart.h"
 
+void imperial_march();
+
+void beep(int _f, unsigned int _t);
+
+void delay_ms(unsigned int ms );
+
+ 
 int main(void)
 {
-	//uart_init(9600);
-	//DDRC = 0xff;
 	floppy_setup(&PORTC, &DDRC, &PORTB, &DDRB);
-	floppy_set_frequency(0, 70);
 
+	floppy_set_frequency(0, 0);
+	floppy_set_frequency(1, 0);
 	DDRD = 0xff;
 
-	PORTD = 0xff; //DEBUG
-
-	//uart_send_string("Floppy Music\n");
     while (1) 
     {
-		//floppy_set_frequency(0, uart_recieve());
-		//uart_send_string("Floppy Music\n");
-		//_delay_ms(500);
-		//PORTD ^= 0xff;
+		play_imperial_march();
+		_delay_ms(2000);
     }
+}
+
+void delay_ms(unsigned int ms )
+{
+	unsigned int i;
+	for (i = 0; i<= ms; i++)
+		_delay_ms(1);
+}
+
+void play_imperial_march()
+{
+	 beep(a, 500);
+	 beep(a, 500);
+	 beep(a, 500);
+	 beep(f, 350);
+	 beep(cH, 150);
+	 beep(a, 500);
+	 beep(f, 350);
+	 beep(cH, 150);
+	 beep(a, 650);
+	 
+	 delay_ms(150);
+	 //end of first bit
+	 
+	 beep(eH, 500);
+	 beep(eH, 500);
+	 beep(eH, 500);
+	 beep(fH, 350);
+	 beep(cH, 150);
+	 beep(gS, 500);
+	 beep(f, 350);
+	 beep(cH, 150);
+	 beep(a, 650);
+	 
+	 delay_ms(150);
+	 //end of second bit...
+	 
+	 beep(aH, 500);
+	 beep(a, 300);
+	 beep(a, 150);
+	 beep(aH, 400);
+	 beep(gSH, 200);
+	 beep(gH, 200);
+	 beep(fSH, 125);
+	 beep(fH, 125);
+	 beep(fSH, 250);
+	 
+	 delay_ms(250);
+	 
+	 beep(aS, 250);
+	 beep(dSH, 400);
+	 beep(dH, 200);
+	 beep(cSH, 200);
+	 beep(cH, 125);
+	 beep(b, 125);
+	 beep(cH, 250);
+	 
+	 delay_ms(250);
+	 
+	 beep(f, 125);
+	 beep(gS, 500);
+	 beep(f, 375);
+	 beep(a, 125);
+	 beep(cH, 500);
+	 beep(a, 375);
+	 beep(cH, 125);
+	 beep(eH, 650);
+	 
+	 //end of third bit... (Though it doesn't play well)
+	 //let's repeat it
+	 
+	 beep(aH, 500);
+	 beep(a, 300);
+	 beep(a, 150);
+	 beep(aH, 400);
+	 beep(gSH, 200);
+	 beep(gH, 200);
+	 beep(fSH, 125);
+	 beep(fH, 125);
+	 beep(fSH, 250);
+	 
+	 delay_ms(250);
+	 
+	 beep(aS, 250);
+	 beep(dSH, 400);
+	 beep(dH, 200);
+	 beep(cSH, 200);
+	 beep(cH, 125);
+	 beep(b, 125);
+	 beep(cH, 250);
+	 
+	 delay_ms(250);
+	 
+	 beep(f, 250);
+	 beep(gS, 500);
+	 beep(f, 375);
+	 beep(cH, 125);
+	 beep(a, 500);
+	 beep(f, 375);
+	 beep(cH, 125);
+	 beep(a, 650);
+	 //end of the song
+}
+
+void beep(int _f, unsigned int _t)
+{
+	PORTD = ~ floppy_calc_freq(_f / 3);
+	floppy_set_frequency(0, floppy_calc_freq(_f / 3));
+	floppy_set_frequency(1, floppy_calc_freq(_f / 3));
+	delay_ms(_t);
+	PORTD = 0xff;
+	floppy_set_frequency(0, 0);
+	floppy_set_frequency(1, 0);
+	_delay_ms(10);
 }
\ No newline at end of file
diff --git a/floppyMusic/uart.c b/floppyMusic/uart.c
index d4d5ccf..aed8acd 100644
--- a/floppyMusic/uart.c
+++ b/floppyMusic/uart.c
@@ -9,32 +9,40 @@
 
  void uart_init(uint32_t _baud)
  {
-	unsigned int ubrr = _GET_UBBR(_baud);
+	 unsigned int ubrr = _GET_UBBR(_baud);
 
-	UBRRH = (ubrr<<8);
-	UBRRL = ubrr;
+	 UBRRH = (ubrr<<8);
+	 UBRRL = ubrr;
+
+	 /* Enable receiver and transmitter */
+	 UCSRB = (1<<RXEN)|(1<<TXEN);
+
+	 /* Set frame format: 8data, 2stop bit */
+	 UCSRC = (1<<URSEL)|(1<<USBS)|(3<<UCSZ0);
  }
 
  void uart_send(char _data)
  {
-	while(!(UCSRA & (1<<UDRE)));
-	UDR = _data;
+	 while(!(UCSRA & (1<<UDRE)));
+	 UDR = _data;
  }
 
  void uart_send_string(char *_data)
  {
-	char *data = _data;
+	 char *data = _data;
 
-	while(*data != '\0')
-	{
-		uart_send(*data);
-		data++;
-	}
+	 while(*data != '\0')
+	 {
+		 uart_send(*data);
+		 data++;
+	 }
  }
 
  char uart_recieve()
  {
-	while(!(UCSRA & (1<<RXC)));
+	 while(!(UCSRA & (1<<RXC)));
+
+	 return UDR;
+ }
+
 
-	return UDR;
- }
\ No newline at end of file