diff options
Diffstat (limited to 'floppyMusic')
| -rw-r--r-- | floppyMusic/floppy.c | 11 | ||||
| -rw-r--r-- | floppyMusic/floppy.h | 2 | ||||
| -rw-r--r-- | floppyMusic/main.c | 158 | ||||
| -rw-r--r-- | floppyMusic/uart.c | 36 |
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 |