summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorVineet K <git@vineetk.net>2024-04-21 20:46:46 -0400
committerShokara Kou <kou@13f0.net>2024-04-21 20:46:56 -0400
commitece65dcc2a11b6f22eed9ce583075f82ca177064 (patch)
tree5d3869565dd61996911e3fa9f6992bbda4561250
parent6a28f45c514cdacf47d466f14b0bc69abccd064f (diff)
play NES SMB Underground theme for testing
Diffstat
-rw-r--r--notes.c213
1 files changed, 179 insertions, 34 deletions
diff --git a/notes.c b/notes.c
index 7902efe..44b24c0 100644
--- a/notes.c
+++ b/notes.c
@@ -8,6 +8,9 @@
8#include <avr/io.h> 8#include <avr/io.h>
9#include <avr/interrupt.h> 9#include <avr/interrupt.h>
10 10
11#define F_CPU 16e6
12#include <util/delay.h>
13
11#define T1_PRESCALAR 8 14#define T1_PRESCALAR 8
12#define FREQ(f) (16e6 / f / T1_PRESCALAR / 2) 15#define FREQ(f) (16e6 / f / T1_PRESCALAR / 2)
13 16
@@ -18,8 +21,11 @@
18#define P_TX 1 21#define P_TX 1
19#define P_SPKR 2 22#define P_SPKR 2
20 23
24#define MARIO 50
25
21unsigned short freqs[] = { 26unsigned short freqs[] = {
22 // PD3-7 27 // PD3-7
28#if 0
23 FREQ(100), 29 FREQ(100),
24 FREQ(200), 30 FREQ(200),
25 FREQ(250), 31 FREQ(250),
@@ -27,18 +33,74 @@ unsigned short freqs[] = {
27 FREQ(350), 33 FREQ(350),
28 // PB0-4 34 // PB0-4
29 FREQ(400), 35 FREQ(400),
36#else
37 FREQ(131), // middle c
38 FREQ(262),
39 FREQ(110),
40 FREQ(220),
41 FREQ(117),
42 FREQ(233),
43#endif
30 FREQ(500), 44 FREQ(500),
31 FREQ(600), 45 FREQ(6000),
32 FREQ(700), 46 FREQ(5000),
33 FREQ(750), 47 FREQ(5500),
34 // PC0-4 48 // PC0-4
35 FREQ(1000), 49 FREQ(4000),
36 FREQ(1250), 50 FREQ(7250),
37 FREQ(1500), 51 FREQ(6500),
38 FREQ(1750), 52 FREQ(5750),
39 FREQ(2000), 53 FREQ(5000),
54 FREQ(5000),
55 FREQ(6000),
56 FREQ(7000),
57 FREQ(8000),
58 FREQ(8000),
59 FREQ(8000),
60 FREQ(8000),
61 FREQ(8000),
62
63 // notes
64 [MARIO] = FREQ(131), // C3
65 FREQ(262), // C4
66 FREQ(110), // A2
67 FREQ(220), // A3
68 FREQ(117), // Bb2
69 FREQ(233), // Bb3
70
71 FREQ(87),
72 FREQ(175),
73 FREQ(73),
74 FREQ(147),
75 FREQ(78),
76 FREQ(156),
77
78 FREQ(156),
79 FREQ(147),
80 FREQ(139),
81 FREQ(131),
82 FREQ(156),
83 FREQ(147),
84 FREQ(104),
85 FREQ(98),
86 FREQ(139),
87
88 FREQ(156),
89 FREQ(185),
90 FREQ(175),
91 FREQ(165),
92 FREQ(233),
93 FREQ(220),
94 FREQ(208),
95 FREQ(156),
96 FREQ(123),
97 FREQ(123),
98 FREQ(110),
99 FREQ(104),
40 100
41 [32] = 0 // used as a 'silent' note 101 ['"'] = FREQ(16000),
102
103 [255] = 0 // used as a 'silent' note
42}; 104};
43unsigned char note = 0; 105unsigned char note = 0;
44// 0 = buttons write note+cycles+\xff to UART 106// 0 = buttons write note+cycles+\xff to UART
@@ -108,6 +170,36 @@ usart_read(void)
108 return UDR0; 170 return UDR0;
109} 171}
110 172
173void
174playtone(void)
175{
176 // Prepare Timer/Counter
177 TCNT1 = 1;
178 OCR1A = freqs[note];
179 TCCR1B |= 1 << CS11;
180
181 // Monitor OutPut Compare Flag
182 while ((TIFR1 & (1 << OCF1A)) == 0);
183
184 // Toggles port For Speaker
185 PORTD ^= 1 << P_SPKR;
186 TIFR1 |= 1 << OCF1A;
187 TCCR1B &= ~(1 << CS11);
188}
189
190void
191play_note(unsigned char _note, unsigned short _cycles)
192{
193 note = _note;
194
195 if (note != 255) {
196 for (unsigned short i = 0; i < _cycles; i++)
197 playtone();
198 } else {
199 _delay_ms(_cycles);
200 }
201}
202
111int 203int
112main(void) 204main(void)
113{ 205{
@@ -139,7 +231,7 @@ main(void)
139 usart_send(mode); 231 usart_send(mode);
140 } 232 }
141 // check if any buttons are pressed, otherwise don't play a note 233 // check if any buttons are pressed, otherwise don't play a note
142 if (mode != '1' && ((PINB & PCMSK0) | (PINC & PCMSK1) | (PIND & PCMSK2)) == 0) { 234 if (mode == '0' && ((PINB & PCMSK0) | (PINC & PCMSK1) | (PIND & PCMSK2)) == 0) {
143 // if a button was released, then send note and cycles played 235 // if a button was released, then send note and cycles played
144 if (cycles > 0) { 236 if (cycles > 0) {
145 usart_send(tmp); 237 usart_send(tmp);
@@ -152,23 +244,14 @@ main(void)
152 } 244 }
153 245
154 if (mode == '0') { 246 if (mode == '0') {
155 // Prepare Timer/Counter
156 TCNT1 = 1;
157 tmp = note; 247 tmp = note;
158 OCR1A = freqs[note];
159 TCCR1B |= 1 << CS11;
160 248
161 // Monitor OutPut Compare Flag 249 playtone();
162 while ((TIFR1 & (1 << OCF1A)) == 0);
163 250
164 // Toggles port For Speaker
165 PORTD ^= 1 << P_SPKR;
166 TIFR1 |= 1 << OCF1A;
167 TCCR1B &= ~(1 << CS11);
168 cycles = (cycles + 1) % 0xffff; 251 cycles = (cycles + 1) % 0xffff;
169 } else if (mode == '1') { 252 } else if (mode == '1') {
170 note = usart_read(); 253 note = usart_read();
171 if (note >= '0') note -= '0'; 254 if (note >= 'Z') note -= '0';
172 tmp = usart_read(); 255 tmp = usart_read();
173 cycles = tmp << 8; 256 cycles = tmp << 8;
174 tmp = usart_read(); 257 tmp = usart_read();
@@ -176,26 +259,88 @@ main(void)
176 tmp = usart_read(); 259 tmp = usart_read();
177 260
178 // reset to default mode when an invalid note is read 261 // reset to default mode when an invalid note is read
179 if (tmp != 'z' || note > '@') { 262 if (tmp != 'z' || note >= '|') {
180 mode = '0'; 263 mode = '0';
181 continue; 264 continue;
182 } 265 }
183 266
184 for (unsigned short i = 0; i < cycles; i++) { 267 for (unsigned short i = 0; i < cycles; i++)
185 usart_send(HIGH(cycles)); 268 playtone();
186 usart_send(LOW(cycles)); 269 } else if (mode == '2') {
187 usart_send(0); 270 play_note(MARIO + 0, 131 * 0.3);
271 play_note(MARIO + 1, 262 * 0.3);
272 play_note(MARIO + 2, 110 * 0.3);
273 play_note(MARIO + 3, 220 * 0.3);
274 play_note(MARIO + 4, 117 * 0.3);
275 play_note(MARIO + 5, 233 * 0.3);
276 play_note(255, 1800);
277 play_note(MARIO + 0, 131 * 0.3);
278 play_note(MARIO + 1, 262 * 0.3);
279 play_note(MARIO + 2, 110 * 0.3);
280 play_note(MARIO + 3, 220 * 0.3);
281 play_note(MARIO + 4, 117 * 0.3);
282 play_note(MARIO + 5, 233 * 0.3);
283 play_note(255, 1800);
188 284
189 TCNT1 = 1; 285 play_note(MARIO + 6, 87 * 0.3);
190 OCR1A = freqs[note]; 286 play_note(MARIO + 7, 175 * 0.3);
191 TCCR1B |= 1 << CS11; 287 play_note(MARIO + 8, 73 * 0.3);
288 play_note(MARIO + 9, 147 * 0.3);
289 play_note(MARIO + 10, 78 * 0.3);
290 play_note(MARIO + 11, 156 * 0.3);
291 play_note(255, 1800);
292 play_note(MARIO + 6, 87 * 0.3);
293 play_note(MARIO + 7, 175 * 0.3);
294 play_note(MARIO + 8, 73 * 0.3);
295 play_note(MARIO + 9, 147 * 0.3);
296 play_note(MARIO + 10, 78 * 0.3);
297 play_note(MARIO + 11, 156 * 0.3);
298 play_note(255, 1800);
192 299
193 while ((TIFR1 & (1 << OCF1A)) == 0); 300 play_note(MARIO + 12, 156 * 0.3);
301 play_note(255, 25);
302 play_note(MARIO + 13, 147 * 0.3);
303 play_note(255, 25);
304 play_note(MARIO + 14, 139 * 0.3);
305 play_note(255, 25);
306 play_note(MARIO + 15, 131 * 0.6);
307 play_note(255, 25);
308 play_note(MARIO + 16, 156 * 0.3);
309 play_note(255, 25);
310 play_note(MARIO + 17, 147 * 0.6);
311 play_note(255, 25);
312 play_note(MARIO + 18, 104 * 0.6);
313 play_note(255, 25);
314 play_note(MARIO + 19, 98 * 0.6);
315 play_note(255, 25);
316 play_note(MARIO + 20, 139 * 0.6);
194 317
195 PORTD ^= 1 << P_SPKR; 318 play_note(MARIO + 21, 156 * 0.3);
196 TIFR1 |= 1 << OCF1A; 319 play_note(255, 25);
197 TCCR1B &= ~(1 << CS11); 320 play_note(MARIO + 22, 185 * 0.3);
198 } 321 play_note(255, 25);
322 play_note(MARIO + 23, 175 * 0.3);
323 play_note(255, 25);
324 play_note(MARIO + 24, 165 * 0.3);
325 play_note(255, 25);
326 play_note(MARIO + 25, 233 * 0.3);
327 play_note(255, 25);
328 play_note(MARIO + 26, 220 * 0.3);
329 play_note(255, 25);
330 play_note(MARIO + 27, 208 * 0.6);
331 play_note(255, 25);
332 play_note(MARIO + 28, 156 * 0.6);
333 play_note(255, 25);
334 play_note(MARIO + 29, 123 * 0.6);
335 play_note(255, 25);
336 play_note(MARIO + 30, 123 * 0.6);
337 play_note(255, 25);
338 play_note(MARIO + 31, 110 * 0.6);
339 play_note(255, 25);
340 play_note(MARIO + 32, 104 * 0.6);
341 play_note(255, 25);
342
343 play_note(255, 3600);
199 } 344 }
200 } 345 }
201} 346}
generated by cgit v1.2.3 (git 2.25.1) at 2026-09-03 04:54:38 +0000