Simple single-color 8x8x8 LED Cube with AVRs
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SerialHelper.java 9.0KB

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  1. /*
  2. * SerialHelper.java
  3. *
  4. * Copyright 2011 Thomas Buck <xythobuz@me.com>
  5. * Copyright 2011 Max Nuding <max.nuding@gmail.com>
  6. * Copyright 2011 Felix Bäder <baeder.felix@gmail.com>
  7. *
  8. * This file is part of LED-Cube.
  9. *
  10. * LED-Cube is free software: you can redistribute it and/or modify
  11. * it under the terms of the GNU General Public License as published by
  12. * the Free Software Foundation, either version 3 of the License, or
  13. * (at your option) any later version.
  14. *
  15. * LED-Cube is distributed in the hope that it will be useful,
  16. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18. * GNU General Public License for more details.
  19. *
  20. * You should have received a copy of the GNU General Public License
  21. * along with LED-Cube. If not, see <http://www.gnu.org/licenses/>.
  22. */
  23. /**
  24. * Implement commands of cube. You can only open one serial port.
  25. * If you want to communicate with another port, close this one first!
  26. * @author Thomas Buck
  27. * @author Max Nuding
  28. * @author Felix Bäder
  29. * @version 1.0
  30. */
  31. import java.util.Date;
  32. import java.util.ArrayList;
  33. import java.util.List;
  34. public class SerialHelper {
  35. private final short OK = 0x42;
  36. private final short ERROR = 0x23;
  37. // Timeout in milliseconds per byte
  38. private final int transmitTimeout = 1000;
  39. private final int recieveTimeout = 1000;
  40. private Frame frame;
  41. /**
  42. * Create new SerialHelper.
  43. * @param serialPort Name of serial port to use.
  44. * @param frame Frame to show error messages
  45. * @throws Exception Could not open serial port.
  46. */
  47. public SerialHelper(String serialPort, Frame frame) throws Exception {
  48. if (HelperUtility.openPort(serialPort) == false) {
  49. printErrorMessage("Could not open serial port \"" + serialPort + "\"");
  50. throw new Exception("Could not open serial port \"" + serialPort + "\"");
  51. }
  52. this.frame = frame;
  53. }
  54. /**
  55. * Poll to check if the cube is there...
  56. * @return TRUE if cube is connected.
  57. */
  58. public boolean probeForCube() {
  59. short[] data = new short[1];
  60. data[0] = OK;
  61. if (!writeData(data)) {
  62. printErrorMessage("Timeout sending probe for Cube");
  63. return false;
  64. }
  65. data = readData(1);
  66. if ((data == null) || (data[0] != OK)) {
  67. printErrorMessage("No response from cube!");
  68. if (data == null) {
  69. System.out.println("Probe was null!");
  70. } else {
  71. System.out.println("Probe was " + data[0]);
  72. }
  73. return false;
  74. }
  75. return true;
  76. }
  77. /**
  78. * Recieve all animations saved in cube.
  79. * @return A cubeWorker populated with the new data or null.
  80. */
  81. public cubeWorker getAnimationsFromCube() {
  82. Animation[] animations;
  83. int animationCount, frameCount;
  84. short[] data, tmp = new short[1];
  85. // Send download command
  86. tmp[0] = 'g';
  87. if (!writeData(tmp)) {
  88. printErrorMessage("Timout sending Command");
  89. return null;
  90. }
  91. data = readData(1);
  92. if ((data == null) || (data[0] != OK)) {
  93. printErrorMessage("Response Error");
  94. if (data == null) {
  95. System.out.println("Download was null!");
  96. } else {
  97. System.out.println("Download was " + data[0]);
  98. }
  99. return null;
  100. }
  101. // Get animation count
  102. data = readData(1);
  103. if (data == null) {
  104. printErrorMessage("Response Error.");
  105. System.out.println("Did not get animation count!");
  106. return null;
  107. } else {
  108. animationCount = data[0];
  109. }
  110. tmp[0] = OK;
  111. if (!writeData(tmp)) {
  112. printErrorMessage("Timout acknowledging animation count!");
  113. return null;
  114. }
  115. animations = new Animation[animationCount];
  116. // Get animations
  117. for (int a = 0; a < animationCount; a++) {
  118. Animation currentAnim = new Animation();
  119. // Get number of frames
  120. data = readData(1);
  121. if (data == null) {
  122. printErrorMessage("Response Error");
  123. System.out.println("Did not get frame count!");
  124. return null;
  125. } else {
  126. frameCount = data[0];
  127. }
  128. tmp[0] = OK;
  129. if (!writeData(tmp)) {
  130. printErrorMessage("Timout sending response Frame Count.");
  131. return null;
  132. }
  133. // Get frames
  134. for (int f = 0; f < frameCount; f++) {
  135. AFrame currentFrame = new AFrame();
  136. // Get frame duration
  137. data = readData(1);
  138. if (data == null) {
  139. printErrorMessage("Response Error");
  140. System.out.println("Did not get frame duration!");
  141. return null;
  142. } else {
  143. currentFrame.setTime(data[0]);
  144. }
  145. tmp[0] = OK;
  146. if (!writeData(tmp)) {
  147. printErrorMessage("Timout sending response Frame Duration");
  148. return null;
  149. }
  150. // Get frame data
  151. data = readData(64);
  152. if (data == null) {
  153. printErrorMessage("Response Error");
  154. System.out.println("Did not get frame data!");
  155. return null;
  156. } else {
  157. currentFrame.setData(data);
  158. }
  159. tmp[0] = OK;
  160. if (!writeData(tmp)) {
  161. printErrorMessage("Timout sending response Frame Data");
  162. return null;
  163. }
  164. // Add frame to animation
  165. currentAnim.setFrame(currentFrame, f);
  166. }
  167. // Add animation to animations list
  168. animations[a] = currentAnim;
  169. }
  170. return new cubeWorker(animations, frame);
  171. }
  172. /**
  173. * Send all animations in a cubeWorker to the Cube.
  174. * @param worker cubeWorker that containts data.
  175. * @return 0 on success. -1 on error.
  176. */
  177. public int sendAnimationsToCube(cubeWorker worker) {
  178. short[] data, tmp = new short[1];
  179. // Send upload command
  180. tmp[0] = 's';
  181. if (!writeData(tmp)) {
  182. printErrorMessage("Timout sending Command");
  183. return -1;
  184. }
  185. data = readData(1);
  186. if ((data == null) || (data[0] != OK)) {
  187. printErrorMessage("Response Error Command");
  188. if (data == null) {
  189. System.out.println("Response Command was null!");
  190. } else {
  191. System.out.println("Response Command was " + data[0]);
  192. }
  193. return -1;
  194. }
  195. // Send animation count
  196. tmp[0] = (short)worker.size();
  197. if (!writeData(tmp)) {
  198. printErrorMessage("Timeout sending numOfAnimations");
  199. return -1;
  200. }
  201. data = readData(1);
  202. if ((data == null) || (data[0] != OK)) {
  203. printErrorMessage("Response Error");
  204. if (data == null) {
  205. System.out.println("Response Count was null!");
  206. } else {
  207. System.out.println("Response Count was " + data[0]);
  208. }
  209. return -1;
  210. }
  211. // Send animations
  212. for (int a = 0; a < worker.size(); a++) {
  213. // Send frame count
  214. tmp[0] = (short)worker.getAnimation(a).size();
  215. if (!writeData(tmp)) {
  216. printErrorMessage("Timeout sending numOfFrames");
  217. return -1;
  218. }
  219. data = readData(1);
  220. if ((data == null) || (data[0] != OK)) {
  221. printErrorMessage("Response Error");
  222. if (data == null) {
  223. System.out.println("Frame Count was null!");
  224. } else {
  225. System.out.println("Frame Count was " + data[0]);
  226. }
  227. return -1;
  228. }
  229. // Send frames
  230. for (int f = 0; f < worker.getAnimation(a).size(); f++) {
  231. // Frame duration
  232. tmp[0] = worker.getAnimation(a).getFrame(f).getTime();
  233. if (!writeData(tmp)) {
  234. printErrorMessage("Timeout sending Frame duration");
  235. return -1;
  236. }
  237. data = readData(1);
  238. if ((data == null) || (data[0] != OK)) {
  239. printErrorMessage("Response Error");
  240. if (data == null) {
  241. System.out.println("Duration was null!");
  242. } else {
  243. System.out.println("Duration was " + data[0]);
  244. }
  245. return -1;
  246. }
  247. // Frame data
  248. if (!writeData(worker.getAnimation(a).getFrame(f).getData())) {
  249. printErrorMessage("Timeout sending Frame");
  250. return -1;
  251. }
  252. data = readData(1);
  253. if ((data == null) || (data[0] != OK)) {
  254. printErrorMessage("Response Error");
  255. if (data == null) {
  256. System.out.println("Datawas null!");
  257. } else {
  258. System.out.println("Data was " + data[0]);
  259. }
  260. return -1;
  261. }
  262. }
  263. }
  264. // Send finish
  265. tmp = new short[4];
  266. tmp[0] = OK;
  267. tmp[1] = OK;
  268. tmp[2] = OK;
  269. tmp[3] = OK;
  270. if (!writeData(tmp)) {
  271. printErrorMessage("Timeout sending Finish");
  272. return -1;
  273. }
  274. data = readData(1);
  275. if ((data == null) || (data[0] != OK)) {
  276. printErrorMessage("Response Error");
  277. if (data == null) {
  278. System.out.println("Finish was null!");
  279. } else {
  280. System.out.println("Finish was " + data[0]);
  281. }
  282. return -1;
  283. }
  284. return 0;
  285. }
  286. /**
  287. * Close the serial port again.
  288. */
  289. public void closeSerialPort() {
  290. HelperUtility.closePort();
  291. }
  292. private void printErrorMessage(String s) {
  293. System.out.println("SerialHelper: " + s);
  294. frame.errorMessage("Serial Error", s);
  295. }
  296. private boolean writeData(short[] data) {
  297. // write data. return true if success
  298. long startdate = (new Date()).getTime();
  299. SerialWriteThread t = new SerialWriteThread(data);
  300. t.start();
  301. while (!t.dataWasSent()) {
  302. if ((new Date()).getTime() >= (startdate + (data.length * transmitTimeout))) {
  303. return false;
  304. }
  305. }
  306. return true;
  307. }
  308. private short[] readData(int length) {
  309. // return data read or null if timeout
  310. long startdate = (new Date()).getTime();
  311. short[] result;
  312. SerialReadThread t = new SerialReadThread(length);
  313. t.start();
  314. while (!t.dataIsReady()) {
  315. if ((new Date()).getTime() >= (startdate + (length * recieveTimeout))) {
  316. return null;
  317. }
  318. }
  319. result = t.getSerialData();
  320. if (result == null) {
  321. System.out.println("Data read was null!");
  322. } else if (result.length == 0) {
  323. System.out.println("No data read!");
  324. }
  325. return result;
  326. }
  327. }