Simple single-color 8x8x8 LED Cube with AVRs
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  1. /*
  2. * main.c
  3. *
  4. * Copyright 2012 Thomas Buck <xythobuz@me.com>
  5. *
  6. * This file is part of LED-Cube.
  7. *
  8. * LED-Cube is free software: you can redistribute it and/or modify
  9. * it under the terms of the GNU General Public License as published by
  10. * the Free Software Foundation, either version 3 of the License, or
  11. * (at your option) any later version.
  12. *
  13. * LED-Cube is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16. * GNU General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU General Public License
  19. * along with LED-Cube. If not, see <http://www.gnu.org/licenses/>.
  20. */
  21. #ifndef F_CPU
  22. #define F_CPU 16000000L
  23. #endif
  24. #define OK 0x42
  25. #define ERROR 0x23
  26. #include <avr/io.h>
  27. #include <util/delay.h>
  28. #include <avr/interrupt.h>
  29. #include <avr/pgmspace.h>
  30. #include <stdint.h>
  31. #include <stdlib.h>
  32. #include <avr/wdt.h>
  33. #include "serial.h"
  34. #include "cube.h"
  35. #include "time.h"
  36. #include "audio.h"
  37. #include "mem.h"
  38. #include "memLayer.h"
  39. #include "twi.h"
  40. #include "strings.h"
  41. #include "visualizer.h"
  42. #include "animations.h"
  43. #include "transmit.h"
  44. // Length of an idle animation frame, 24 -> 1 second
  45. #define IDLELENGTH 48
  46. void init(void);
  47. uint8_t selfTest(void);
  48. void serialHandler(char c);
  49. uint8_t defaultImageCube[64] = { 0x81, 0x42, 0x24, 0x18, 0x18, 0x24, 0x42, 0x81,
  50. 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  51. 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  52. 0x81, 0x42, 0x24, 0x18, 0x18, 0x24, 0x42, 0x81,
  53. 0x81, 0x42, 0x24, 0x18, 0x18, 0x24, 0x42, 0x81,
  54. 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  55. 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  56. 0x81, 0x42, 0x24, 0x18, 0x18, 0x24, 0x42, 0x81 };
  57. #define NOERROR 0
  58. // Audio does not answer
  59. #define AUDIOERROR 1
  60. // Memory does not answer
  61. #define MEMORYERROR 2
  62. // Memory not writeable
  63. #define MEMORYWRITEERROR 4
  64. // x = errorcode, e = error definition, not NOERROR
  65. #define ISERROR(x, e) ((x) & (e))
  66. uint8_t shouldRestart = 0;
  67. uint8_t refreshAnimationCount = 0;
  68. uint8_t lastButtonState = 0;
  69. uint8_t maxButtonState = 1; // No audio, get's checked later
  70. uint8_t disableAudioData = 0;
  71. uint8_t disableMemory = 0;
  72. uint8_t disableAnim = 0;
  73. char buffer[11];
  74. /* Not so powerful Debouncing Example
  75. * No Interrupt needed
  76. * Author: Peter Dannegger
  77. */
  78. #define debounce(port, pin) ({ \
  79. static uint8_t flag = 0; /* new variable on every macro usage */ \
  80. uint8_t i = 0; \
  81. if (flag) { /* check for key release: */ \
  82. for(;;) { /* loop ... */ \
  83. if(!(port & 1 << pin)) { /* ... until key pressed or ... */ \
  84. i = 0; \
  85. break; \
  86. } \
  87. _delay_us(98); /* * 256 = 25ms */ \
  88. if(--i == 0) { /* ... until key >25ms released */ \
  89. flag = 0; /* clear press flag */ \
  90. i = 0; /* 0 = key release debounced */ \
  91. break; \
  92. } \
  93. } \
  94. } else { /* else check for key press: */ \
  95. for(;;) { /* loop ... */ \
  96. if ((port & 1<<pin)) { /* ... until key released or ... */ \
  97. i = 0; \
  98. break; \
  99. } \
  100. _delay_us( 98 ); /* * 256 = 25ms */ \
  101. if (--i == 0) { /* ... until key >25ms pressed */ \
  102. flag = 1; /* set press flag */ \
  103. i = 1; /* 1 = key press debounced */ \
  104. break; \
  105. } \
  106. } \
  107. } \
  108. i; /* return value of Macro */ \
  109. })
  110. int main(void) {
  111. /*
  112. Quick Summary of the jobs main has to do:
  113. - Initialize Cube
  114. - Regularly check the buttonstate
  115. - Check for incoming serial transmission and run serialHandler
  116. - Check if animations are stored
  117. --> If yes, display them
  118. --> If no, display our idle animations
  119. */
  120. uint8_t i;
  121. uint8_t imageIndex = 0, imageCount = 0;
  122. uint8_t idleIndex = 0, idleCount = 0;
  123. uint8_t *imageData = NULL, *audioData = NULL;
  124. uint8_t duration = 0;
  125. // Initialization:
  126. MCUCSR = 0; // Reset Watchdog
  127. wdt_disable();
  128. init(); // Initialize all subsystems, set port directions, enable interrupts
  129. wdt_enable(WDTO_1S); // Watchdog reset after 1 second
  130. i = selfTest(); // Run selftest, print errors
  131. // Disable subsystems if they are unavailable
  132. if (ISERROR(i, AUDIOERROR))
  133. disableAudioData = 1;
  134. if (ISERROR(i, MEMORYERROR) || ISERROR(i, MEMORYWRITEERROR))
  135. disableMemory = 1;
  136. serialWriteString(getString(0)); // Print Version
  137. if (disableMemory == 0)
  138. imageCount = getAnimationCount(); // Retrieve image count from memory
  139. idleCount = numOfAnimations();
  140. if (disableAudioData == 0)
  141. maxButtonState = numberOfVisualizations() + 1; // Number of toggle steps for button
  142. lastButtonState = 1;
  143. while(1) { // Our Mainloop
  144. if (!shouldRestart) { // A flag to trigger a watchdog reset
  145. wdt_reset();
  146. }
  147. if (refreshAnimationCount) {
  148. refreshAnimationCount = 0;
  149. if (disableMemory == 0)
  150. imageCount = getAnimationCount();
  151. }
  152. if (serialHasChar()) { // Run serialHandler
  153. serialHandler((char)(serialGet()));
  154. }
  155. if (debounce(PINB, PB0)) {
  156. if (lastButtonState > 0) {
  157. lastButtonState--;
  158. } else {
  159. lastButtonState = maxButtonState - 1;
  160. }
  161. }
  162. if (lastButtonState == 0) {
  163. // Display animations, stored or built-in
  164. if (disableAnim == 0) {
  165. if ((imageCount > 0) && (disableMemory == 0)) {
  166. // Memory frames
  167. if (isFinished() > duration) {
  168. // Last frame was displayed long enough
  169. imageIndex = (imageIndex < (imageCount - 1)) ? (imageIndex + 1) : 0;
  170. imageData = getFrame(imageIndex);
  171. if (imageData == NULL) {
  172. duration = 24;
  173. setImage(defaultImageCube);
  174. } else {
  175. duration = imageData[64];
  176. setImage(imageData);
  177. free(imageData);
  178. }
  179. }
  180. } else {
  181. // Built-In Anims
  182. if (isFinished() > duration) {
  183. idleIndex = (idleIndex < (idleCount - 1)) ? (idleIndex + 1) : 0;
  184. duration = executeAnimation(idleIndex);
  185. }
  186. }
  187. }
  188. } else {
  189. // An audiomode is selected
  190. if (disableAudioData == 0) {
  191. if (isFinished()) {
  192. audioData = getAudioData();
  193. if (audioData != NULL) {
  194. runVisualization(audioData, (lastButtonState - 1));
  195. } else {
  196. lastButtonState = 0;
  197. duration = 24;
  198. setImage(defaultImageCube); // Quasi Error Screen
  199. }
  200. }
  201. } else {
  202. lastButtonState = 0;
  203. }
  204. }
  205. // Print fps after one second
  206. /* if ((getSystemTime() >= 1000) && (fpsWasSent == 0)) {
  207. temp = getTriggerCount();
  208. serialWriteString(ltoa(temp, buffer, 10));
  209. serialWriteString(getString(27));
  210. serialWriteString(ltoa((temp / 8), buffer, 10));
  211. serialWriteString(getString(28));
  212. fpsWasSent = 1;
  213. } */
  214. }
  215. close(); // This is of course unneccessary. We never reach this point.
  216. return 0;
  217. }
  218. void init(void) {
  219. DDRA = 0xFF; // Latch Data Bus as Output
  220. DDRD = 0xFC; DDRB = 24; // Mosfets as Output
  221. DDRC = 0xFC; DDRB |= 6; // Latch Enable as Output
  222. DDRB &= ~(1 << PB0); // Pushbutton as Input
  223. initCube();
  224. serialInit(25, 8, NONE, 1);
  225. i2c_init();
  226. initSystemTimer();
  227. sei(); // Enable Interrupts
  228. setImage(defaultImageCube); // Display something
  229. }
  230. uint8_t selfTest(void) {
  231. uint8_t result = NOERROR;
  232. uint8_t *data = getAudioData();
  233. if (data == NULL) {
  234. result |= AUDIOERROR;
  235. } else {
  236. }
  237. data = memGetBytes(0, 1);
  238. if (data == NULL) {
  239. result |= MEMORYERROR;
  240. } else {
  241. free(data);
  242. }
  243. setGeneralPurposeByte(0, 0x23);
  244. if (getGeneralPurposeByte(0) != 0x23) {
  245. result |= MEMORYWRITEERROR;
  246. }
  247. if (result) { // Error in Selftest
  248. serialWriteString(getString(1));
  249. serialWriteString(itoa(result, buffer, 2));
  250. serialWrite('\n');
  251. if (ISERROR(result, AUDIOERROR)) {
  252. serialWriteString(getString(3));
  253. }
  254. if (ISERROR(result, MEMORYERROR)) {
  255. serialWriteString(getString(4));
  256. }
  257. if (ISERROR(result, MEMORYWRITEERROR)) {
  258. serialWriteString(getString(5));
  259. }
  260. }
  261. return result;
  262. }
  263. void randomAnimation(void) {
  264. uint8_t *b = (uint8_t *)malloc(64);
  265. uint8_t x, y, z;
  266. if (b == NULL) {
  267. serialWriteString(getString(24));
  268. return;
  269. }
  270. for (x = 0; x < 64; x++) {
  271. b[x] = 0;
  272. }
  273. while(1) {
  274. wdt_reset();
  275. setImage(b);
  276. while(isFinished() == 0);
  277. x = rand() / 4096;
  278. y = rand() / 4096;
  279. z = rand() / 4096;
  280. b[x + (8 * y)] ^= (1 << z);
  281. if (serialHasChar()) {
  282. serialWriteString(getString(25));
  283. free(b);
  284. serialGet();
  285. return;
  286. }
  287. }
  288. free(b);
  289. }
  290. void serialHandler(char c) {
  291. // Used letters:
  292. // a, b, c, d, e, f, g, h, i, m, n, p, q, r, s, t, u, v, x, y, 0, 1, 2, 3, #
  293. uint8_t i, y, z;
  294. uint8_t *tmp;
  295. switch(c) {
  296. case OK:
  297. serialWrite(OK);
  298. break;
  299. case 'h': case 'H': case '?':
  300. serialWriteString(getString(6));
  301. serialWriteString(getString(7));
  302. serialWriteString(getString(8));
  303. serialWriteString(getString(9));
  304. serialWriteString(getString(10));
  305. serialWriteString(getString(26));
  306. serialWriteString(getString(34));
  307. serialWriteString(getString(17));
  308. serialWriteString(getString(11));
  309. serialWriteString(getString(12));
  310. serialWriteString(getString(13));
  311. break;
  312. case 'd': case 'D':
  313. setAnimationCount(0);
  314. serialWrite(OK);
  315. refreshAnimationCount = 1;
  316. break;
  317. case 'f': case 'F':
  318. serialWriteString(getString(32));
  319. clearMem();
  320. serialWriteString(getString(33));
  321. refreshAnimationCount = 1;
  322. break;
  323. case 'g': case 'G':
  324. transmitAnimations();
  325. break;
  326. case 's': case 'S':
  327. recieveAnimations();
  328. refreshAnimationCount = 1;
  329. break;
  330. case 'v': case 'V':
  331. serialWriteString(getString(0));
  332. break;
  333. case 'm': case 'M':
  334. if (lastButtonState > 0) {
  335. lastButtonState--;
  336. } else {
  337. lastButtonState = maxButtonState - 1;
  338. }
  339. if (lastButtonState) {
  340. writeNumber(lastButtonState, 10);
  341. serialWrite(' ');
  342. serialWriteString(getString(41));
  343. } else {
  344. serialWriteString(getString(40));
  345. }
  346. break;
  347. case 'q': case 'Q':
  348. shouldRestart = 1;
  349. serialWriteString(getString(30));
  350. break;
  351. case 'r': case 'R':
  352. randomAnimation();
  353. break;
  354. case 't': case 'T':
  355. printTime();
  356. break;
  357. case 'a': case 'A':
  358. sendAudioData();
  359. break;
  360. case 'c': case 'C':
  361. serialWriteString(itoa(getAnimationCount(), buffer, 10));
  362. serialWriteString(" (");
  363. serialWriteString(itoa(refreshAnimationCount, buffer, 10));
  364. serialWriteString(")");
  365. serialWriteString(getString(15));
  366. break;
  367. case 'u': case 'U':
  368. serialWriteString(getString(31));
  369. tmp = getFrame(readNumber(10));
  370. dumpFrame(tmp);
  371. free(tmp);
  372. break;
  373. case 'o': case 'O':
  374. serialWriteString(getString(36)); // Start:
  375. i = readNumber(10);
  376. serialWriteString(getString(39)); // Ende:
  377. y = readNumber(10);
  378. serialWriteString(getString(35)); // Duration:
  379. z = readNumber(10);
  380. for (c = i; c <= y; c++) {
  381. setDuration(c, z);
  382. }
  383. serialWriteString(getString(33)); // Done
  384. break;
  385. case 'x': case 'X':
  386. // Get byte, store as animation count
  387. serialWriteString(getString(16)); // "New animation count: "
  388. setAnimationCount(readNumber(10));
  389. refreshAnimationCount = 1;
  390. break;
  391. case 'p': case 'P':
  392. simpleAnimationInput();
  393. break;
  394. case 'y': case 'Y':
  395. serialWriteString(getString(18)); // "Frame to change: "
  396. i = readNumber(10);
  397. tmp = readAFrame();
  398. setFrame(i, tmp);
  399. free(tmp);
  400. break;
  401. case 'e': case 'E':
  402. selfTest();
  403. break;
  404. case 'n': case 'N':
  405. // snake();
  406. break;
  407. case '0':
  408. fillBuffer(0);
  409. disableAnim = 1;
  410. break;
  411. case '1':
  412. fillBuffer(0xFF);
  413. disableAnim = 1;
  414. break;
  415. case '3':
  416. setImage(defaultImageCube);
  417. disableAnim = 1;
  418. break;
  419. case '2':
  420. fillBuffer(0);
  421. while(1) {
  422. for (i = 0; i < 8; i++) {
  423. for (y = 0; y < 8; y++) {
  424. defaultImageCube[y + (i * 8)] = 0;
  425. for (z = 0; z < 8; z++) {
  426. defaultImageCube[y + (i * 8)] |= (1 << z);
  427. setImage(defaultImageCube);
  428. while (isFinished() == 0) {
  429. wdt_reset();
  430. if (serialHasChar()) {
  431. goto killMeForIt; // Yes I know...
  432. // But I need to break out of 2 while Loops...
  433. }
  434. }
  435. }
  436. // defaultImageCube[y + (i * 8)] = 0;
  437. }
  438. }
  439. }
  440. break;
  441. killMeForIt:
  442. serialGet(); // Killed because we got a serial char. Remove it from buffer.
  443. serialWriteString(getString(25));
  444. break;
  445. case 'I': case 'i':
  446. serialWriteString(ltoa(getTriggerCount(), buffer, 10));
  447. serialWrite('\n');
  448. break;
  449. default:
  450. serialWrite(ERROR);
  451. break;
  452. }
  453. // c was used as temp var and does not contain the char anymore...!
  454. }