commit b33e1fe796c489065b652f887b9ffec08d3f1091
parent 8cacc107c96a8816c8d15ad491af583ec75825de
Author: Vineet K <git@vineetk.net>
Date: Mon, 22 Apr 2024 13:18:20 -0400
simplify mario song
Diffstat:
| M | notes.c | | | 195 | ++++++++++++++++++++++++++++++++++++++++--------------------------------------- |
1 file changed, 99 insertions(+), 96 deletions(-)
diff --git a/notes.c b/notes.c
@@ -25,6 +25,69 @@
unsigned short freqs[] = {
// PD3-7
+ 100,
+ 200,
+ 250,
+ 300,
+ 350,
+ // PB0-4
+ 400,
+ 450, // middle c
+ 500,
+ 600,
+ 700,
+ // PC0-4
+ 750,
+ 800,
+ 850,
+ 900,
+ 950,
+
+ // notes
+ [MARIO] = 131, // C3
+ 262, // C4
+ 110, // A2
+ 220, // A3
+ 117, // Bb2
+ 233, // Bb3
+
+ 87,
+ 175,
+ 73,
+ 147,
+ 78,
+ 156,
+
+ 156,
+ 147,
+ 139,
+ 131,
+ 156,
+ 147,
+ 104,
+ 98,
+ 139,
+
+ 156,
+ 185,
+ 175,
+ 165,
+ 233,
+ 220,
+ 208,
+ 156,
+ 123,
+ 123,
+ 110,
+ 104,
+
+ ['"'] = 16000,
+
+ [255] = 0 // used as a 'silent' note
+};
+
+unsigned short t_freqs[] = {
+ // PD3-7
FREQ(100),
FREQ(200),
FREQ(250),
@@ -86,8 +149,9 @@ unsigned short freqs[] = {
[255] = 0 // used as a 'silent' note
};
unsigned char note = 0;
-// 0 = buttons write note+cycles+\xff to UART
-// 1 = buttons don't do anything, speaker reads note+cycles+\xff from UART
+// 0 = normal/piano mode
+// 1 = recording mode
+// 2 = mario demo
unsigned char mode = '0';
ISR (PCINT0_vect)
@@ -126,9 +190,9 @@ ISR (PCINT2_vect)
void
usart_init(void)
{
- // 115200 bps, RX/TX enabled
+ // 9600 bps, TX enabled
UBRR0 = 103;
- UCSR0B = (1 << RXEN0) | (1 << TXEN0);
+ UCSR0B = 1 << TXEN0;
UCSR0C = (1 << UCSZ01) | (1 << UCSZ00);
}
@@ -158,7 +222,7 @@ playtone(void)
{
// Prepare Timer/Counter
TCNT1 = 1;
- OCR1A = freqs[note];
+ OCR1A = t_freqs[note];
TCCR1B |= 1 << CS11;
// Monitor OutPut Compare Flag
@@ -177,24 +241,10 @@ play_note(unsigned char _note, unsigned short _cycles)
usart_send(note);
- if (note != 255) {
- for (unsigned short i = 0; i < _cycles; i++)
- playtone();
- } else {
- // when note is 255, don't play anything for _cycles ms
- // Prepare Timer/Counter
- TCNT1 = 1;
- OCR1A = 16e3 * _cycles / T1_PRESCALAR;
- TCCR1B |= 1 << CS11;
-
- // Monitor OutPut Compare Flag
- while ((TIFR1 & (1 << OCF1A)) == 0);
-
- // Toggles port For Speaker
- PORTD ^= 1 << P_SPKR;
- TIFR1 |= 1 << OCF1A;
- TCCR1B &= ~(1 << CS11);
- }
+ for (unsigned short i = 0; i < _cycles; i++)
+ playtone();
+
+ _delay_ms(25);
}
int
@@ -224,6 +274,8 @@ main(void)
for (unsigned char n = 0;; n = (n + 1) % 2) {
if (PINC & _BV(5))
mode = '2';
+ else if (PINB & _BV(5))
+ mode = '3';
else
mode = '0';
@@ -243,79 +295,30 @@ main(void)
playtone();
cycles = (cycles + 1) % 0xffff;
- } else if (mode == '2') {
- play_note(MARIO + 0, 131 * 0.3);
- play_note(MARIO + 1, 262 * 0.3);
- play_note(MARIO + 2, 110 * 0.3);
- play_note(MARIO + 3, 220 * 0.3);
- play_note(MARIO + 4, 117 * 0.3);
- play_note(MARIO + 5, 233 * 0.3);
- _delay_ms(1800);
- play_note(MARIO + 0, 131 * 0.3);
- play_note(MARIO + 1, 262 * 0.3);
- play_note(MARIO + 2, 110 * 0.3);
- play_note(MARIO + 3, 220 * 0.3);
- play_note(MARIO + 4, 117 * 0.3);
- play_note(MARIO + 5, 233 * 0.3);
- _delay_ms(1800);
-
- play_note(MARIO + 6, 87 * 0.3);
- play_note(MARIO + 7, 175 * 0.3);
- play_note(MARIO + 8, 73 * 0.3);
- play_note(MARIO + 9, 147 * 0.3);
- play_note(MARIO + 10, 78 * 0.3);
- play_note(MARIO + 11, 156 * 0.3);
- _delay_ms(1800);
- play_note(MARIO + 6, 87 * 0.3);
- play_note(MARIO + 7, 175 * 0.3);
- play_note(MARIO + 8, 73 * 0.3);
- play_note(MARIO + 9, 147 * 0.3);
- play_note(MARIO + 10, 78 * 0.3);
- play_note(MARIO + 11, 156 * 0.3);
- _delay_ms(1800);
-
- play_note(MARIO + 12, 156 * 0.3);
- _delay_ms(25);
- play_note(MARIO + 13, 147 * 0.3);
- _delay_ms(25);
- play_note(MARIO + 14, 139 * 0.3);
- _delay_ms(25);
- play_note(MARIO + 15, 131 * 0.6);
- _delay_ms(25);
- play_note(MARIO + 16, 156 * 0.3);
- _delay_ms(25);
- play_note(MARIO + 17, 147 * 0.6);
- _delay_ms(25);
- play_note(MARIO + 18, 104 * 0.6);
- _delay_ms(25);
- play_note(MARIO + 19, 98 * 0.6);
- _delay_ms(25);
- play_note(MARIO + 20, 139 * 0.6);
-
- play_note(MARIO + 21, 156 * 0.3);
- _delay_ms(25);
- play_note(MARIO + 22, 185 * 0.3);
- _delay_ms(25);
- play_note(MARIO + 23, 175 * 0.3);
- _delay_ms(25);
- play_note(MARIO + 24, 165 * 0.3);
- _delay_ms(25);
- play_note(MARIO + 25, 233 * 0.3);
- _delay_ms(25);
- play_note(MARIO + 26, 220 * 0.3);
- _delay_ms(25);
- play_note(MARIO + 27, 208 * 0.6);
- _delay_ms(25);
- play_note(MARIO + 28, 156 * 0.6);
- _delay_ms(25);
- play_note(MARIO + 29, 123 * 0.6);
- _delay_ms(25);
- play_note(MARIO + 30, 123 * 0.6);
- _delay_ms(25);
- play_note(MARIO + 31, 110 * 0.6);
- _delay_ms(25);
- play_note(MARIO + 32, 104 * 0.6);
- _delay_ms(25);
+ } else if (mode == '1') {
+
+ } else if (mode == '3') {
+ for (unsigned char i = 0; i < 2; i++) {
+ for (unsigned char j = 0; j <= 5; j++)
+ play_note(MARIO + j, freqs[MARIO + j] * 0.3);
+ _delay_ms(1800);
+ }
+
+ for (unsigned char i = 0; i < 2; i++) {
+ for (unsigned char j = 6; j <= 11; j++)
+ play_note(MARIO + j, freqs[MARIO + j] * 0.3);
+ _delay_ms(1800);
+ }
+
+ for (unsigned char i = 12; i <= 14; i++)
+ play_note(MARIO + i, freqs[MARIO + i] * 0.3);
+ for (unsigned char i = 15; i <= 20; i++)
+ play_note(MARIO + i, freqs[MARIO + i] * 0.6);
+
+ for (unsigned char i = 21; i <= 26; i++)
+ play_note(MARIO + i, freqs[MARIO + i] * 0.3);
+ for (unsigned char i = 27; i <= 32; i++)
+ play_note(MARIO + i, freqs[MARIO + i] * 0.6);
}
}
}
