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Rev | Author | Line No. | Line |
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403 | ligi | 1 | /******************************************************************************************************************************** |
231 | ligi | 2 | * |
3 | * Abstaction Layer to Communicate via J2ME and Bluetooth with the FlightCtrl of the MikroKopter Project (www.mikrokopter.de ) |
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4 | * |
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5 | * Author: Marcus -LiGi- Bueschleb |
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6 | * |
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403 | ligi | 7 | * see README for further Infos |
8 | * |
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9 | * |
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10 | *******************************************************************************************************************************/ |
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164 | ligi | 11 | |
12 | import javax.microedition.io.*; |
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13 | import java.io.*; |
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14 | |||
15 | public class MKCommunicator |
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16 | implements Runnable |
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17 | { |
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18 | /***************** Section: public Attributes **********************************************/ |
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19 | public boolean connected=false; // flag for the connection state |
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20 | public boolean fatal=false; // flag which is set when an error is so fatal that reconnecting won't be tried - e.g. unknown version number. |
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21 | |||
22 | |||
23 | public String mk_url=""; // buffer the url which is given in the constuctor for reconnectin purposes |
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24 | |||
208 | ligi | 25 | public MKLCD LCD; |
210 | ligi | 26 | public MKVersion version; |
27 | public MKDebugData debug_data; |
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303 | ligi | 28 | public MKParamsParser params; |
221 | ligi | 29 | public MKWatchDog watchdog; |
314 | ligi | 30 | public MKProxy proxy=null; |
208 | ligi | 31 | |
181 | ligi | 32 | public long connection_start_time=-1; |
164 | ligi | 33 | |
34 | |||
35 | /****************** Section: private Attributes **********************************************/ |
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36 | private javax.microedition.io.StreamConnection connection; |
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37 | private java.io.InputStream reader; |
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38 | private java.io.OutputStream writer; |
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39 | |||
40 | |||
41 | // temp - to be removed |
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42 | String p_msg="--"; |
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43 | public String msg="BT_INIT"; |
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44 | |||
208 | ligi | 45 | public int debug_data_count=0; |
46 | public int version_data_count=0; |
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47 | public int other_data_count=0; |
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48 | public int lcd_data_count=0; |
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303 | ligi | 49 | public int params_data_count=0; |
164 | ligi | 50 | |
51 | |||
314 | ligi | 52 | |
303 | ligi | 53 | String name; |
54 | |||
164 | ligi | 55 | /****************** Section: public Methods ************************************************/ |
303 | ligi | 56 | public MKCommunicator() |
164 | ligi | 57 | { |
210 | ligi | 58 | version=new MKVersion(); |
181 | ligi | 59 | debug_data=new MKDebugData(); |
303 | ligi | 60 | params=new MKParamsParser(); |
61 | // mk_url=url; // remember URL for connecting / reconnecting later |
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181 | ligi | 62 | |
303 | ligi | 63 | LCD= new MKLCD(this); |
64 | watchdog=new MKWatchDog(this); |
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164 | ligi | 65 | new Thread( this ).start(); // fire up main Thread |
66 | } |
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67 | |||
68 | |||
314 | ligi | 69 | public void do_proxy(String proxy_url) |
70 | { |
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71 | proxy=new MKProxy(proxy_url); |
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72 | } |
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303 | ligi | 73 | |
74 | // URL string: "btspp://XXXXXXXXXXXX:1" - the X-Part is the MAC-Adress of the Bluetooth-Device connected to the Fligth-Control |
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75 | public void connect_to(String _url,String _name) |
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76 | { |
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77 | mk_url=_url; |
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78 | name=_name; |
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79 | force_disconnect=false; |
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80 | connected=false; |
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81 | } |
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82 | |||
164 | ligi | 83 | /****************** Section: private Methods ************************************************/ |
84 | private void connect() |
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85 | { |
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303 | ligi | 86 | |
164 | ligi | 87 | try{ |
88 | connection = (StreamConnection) Connector.open(mk_url, Connector.READ_WRITE); |
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89 | reader=connection.openInputStream(); |
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90 | writer=connection.openOutputStream(); |
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181 | ligi | 91 | |
92 | connection_start_time=System.currentTimeMillis(); |
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164 | ligi | 93 | connected=true; // if we get here everything seems to be OK |
181 | ligi | 94 | get_version(); |
221 | ligi | 95 | lcd_data_count=0; |
96 | debug_data_count=0; |
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97 | version_data_count=0; |
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98 | |||
303 | ligi | 99 | |
164 | ligi | 100 | } |
101 | catch (Exception ex) |
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102 | { |
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103 | // TODO difference fatal errors from those which will lead to reconnection |
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104 | msg="Problem connecting" + "\n" + ex; |
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105 | } |
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181 | ligi | 106 | |
107 | |||
108 | |||
164 | ligi | 109 | } |
110 | |||
111 | |||
112 | |||
113 | public int[] Decode64(int[] in_arr, int offset,int len) |
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114 | { |
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115 | int ptrIn=offset; |
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116 | int a,b,c,d,x,y,z; |
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117 | int ptr=0; |
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118 | |||
119 | int[] out_arr=new int[len]; |
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120 | |||
121 | while(len!=0) |
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122 | { |
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123 | a = in_arr[ptrIn++] - '='; |
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124 | b = in_arr[ptrIn++] - '='; |
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125 | c = in_arr[ptrIn++] - '='; |
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126 | d = in_arr[ptrIn++] - '='; |
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127 | //if(ptrIn > max - 2) break; // nicht mehr Daten verarbeiten, als empfangen wurden |
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128 | |||
129 | x = (a << 2) | (b >> 4); |
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130 | y = ((b & 0x0f) << 4) | (c >> 2); |
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131 | z = ((c & 0x03) << 6) | d; |
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132 | |||
133 | if((len--)!=0) out_arr[ptr++] = x; else break; |
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134 | if((len--)!=0) out_arr[ptr++] = y; else break; |
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135 | if((len--)!=0) out_arr[ptr++] = z; else break; |
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136 | } |
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137 | |||
138 | return out_arr; |
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139 | |||
140 | } |
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141 | |||
325 | ligi | 142 | // FC - Function Mappers |
164 | ligi | 143 | |
144 | // send a version Request to the FC - the reply to this request will be processed in process_data when it arrives |
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145 | public void get_version() |
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146 | { |
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147 | send_command(0,'v',new int[0]); |
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148 | } |
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149 | |||
303 | ligi | 150 | // send a MotorTest request - params are the speed for each Motor |
231 | ligi | 151 | public void motor_test(int[] params) |
152 | { |
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153 | send_command(0,'t',params); |
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154 | } |
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155 | |||
303 | ligi | 156 | // get params |
157 | public void get_params(int id) |
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158 | { |
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159 | int[] params=new int[1]; |
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160 | params[0]=id; |
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231 | ligi | 161 | |
325 | ligi | 162 | while(sending) |
163 | {try { Thread.sleep(50); } |
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164 | catch (Exception e) { } |
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165 | } |
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166 | |||
303 | ligi | 167 | send_command(0,'q',params); |
168 | } |
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169 | |||
325 | ligi | 170 | public void trigger_LCD(int key) |
171 | { |
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172 | if (sending) return; |
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303 | ligi | 173 | |
325 | ligi | 174 | |
175 | int[] params=new int[3]; |
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176 | params[0]=key; |
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177 | params[1]=0; |
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178 | params[2]=0; |
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179 | |||
180 | send_command(0,'h',params); |
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181 | |||
182 | } |
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303 | ligi | 183 | |
184 | |||
325 | ligi | 185 | public void write_params() |
186 | { |
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187 | while(sending) |
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188 | {try { Thread.sleep(50); } |
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189 | catch (Exception e) { } |
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190 | } |
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191 | |||
192 | send_command(0,(char)('l'+params.act_paramset),params.field[params.act_paramset]); |
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193 | } |
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194 | |||
195 | |||
196 | boolean sending=false; |
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197 | |||
164 | ligi | 198 | // send command to FC ( add crc and pack into pseudo Base64 |
199 | public void send_command(int modul,char cmd,int[] params) |
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200 | { |
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325 | ligi | 201 | sending=true; |
164 | ligi | 202 | char[] send_buff=new char[5 + (params.length/3 + (params.length%3==0?0:1) )*4]; // 5=1*start_char+1*addr+1*cmd+2*crc |
203 | send_buff[0]='#'; |
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204 | send_buff[1]=(char)modul; |
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205 | send_buff[2]=cmd; |
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206 | |||
208 | ligi | 207 | for(int param_pos=0;param_pos<(params.length/3 + (params.length%3==0?0:1)) ;param_pos++) |
208 | { |
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231 | ligi | 209 | int a = (param_pos*3<params.length)?params[param_pos*3]:0; |
210 | int b = ((param_pos*3+1)<params.length)?params[param_pos*3+1]:0; |
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211 | int c = ((param_pos*3+2)<params.length)?params[param_pos*3+2]:0; |
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208 | ligi | 212 | |
213 | send_buff[3+param_pos*4] = (char)((a >> 2)+'=' ); |
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214 | send_buff[3+param_pos*4+1] = (char)('=' + (((a & 0x03) << 4) | ((b & 0xf0) >> 4))); |
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215 | send_buff[3+param_pos*4+2] = (char)('=' + (((b & 0x0f) << 2) | ((c & 0xc0) >> 6))); |
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216 | send_buff[3+param_pos*4+3] = (char)('=' + ( c & 0x3f)); |
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217 | |||
218 | //send_buff[3+foo]='='; |
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219 | } |
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220 | |||
221 | /* for(int foo=0;foo<(params.length/3 + (params.length%3==0?0:1) )*4;foo++) |
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222 | { |
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223 | int a = (foo<params.length) params[foo]; |
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224 | int a = params[foo]; |
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225 | |||
226 | //send_buff[3+foo]='='; |
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227 | } |
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228 | */ |
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164 | ligi | 229 | try |
230 | { |
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231 | int tmp_crc=0; |
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232 | for ( int tmp_i=0; tmp_i<send_buff.length;tmp_i++) |
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233 | { |
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234 | tmp_crc+=(int)send_buff[tmp_i]; |
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235 | writer.write(send_buff[tmp_i]); |
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236 | } |
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237 | tmp_crc%=4096; |
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238 | writer.write( (char)(tmp_crc/64 + '=')); |
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239 | writer.write( (char)(tmp_crc%64 + '=')); |
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240 | writer.write('\r'); |
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241 | writer.flush(); |
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242 | } |
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243 | catch (Exception e) |
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244 | { // problem sending data to FC |
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245 | } |
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325 | ligi | 246 | |
247 | sending=false; |
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164 | ligi | 248 | } |
249 | |||
210 | ligi | 250 | |
164 | ligi | 251 | public void process_data(int[] data,int len) |
252 | { |
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253 | int[] decoded_data; |
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254 | |||
181 | ligi | 255 | |
164 | ligi | 256 | switch((char)data[2]) |
257 | { |
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258 | |||
259 | case 'D': // debug Data |
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208 | ligi | 260 | debug_data_count++; |
210 | ligi | 261 | debug_data.set_by_mk_data(Decode64(data,3,50),version); |
164 | ligi | 262 | break; |
263 | |||
264 | case 'V': // Version Info |
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208 | ligi | 265 | version_data_count++; |
210 | ligi | 266 | version.set_by_mk_data(Decode64(data,3,6)); |
208 | ligi | 267 | break; |
268 | |||
269 | case '0': |
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270 | case '1': |
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271 | case '2': |
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272 | case '3': |
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273 | LCD.handle_lcd_data(Decode64(data,3,20),data[2]-(int)'0'); |
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274 | lcd_data_count++; |
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164 | ligi | 275 | break; |
208 | ligi | 276 | |
303 | ligi | 277 | case 'L': |
278 | case 'M': |
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279 | case 'N': |
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280 | case 'O': |
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281 | case 'P': |
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314 | ligi | 282 | params.set_by_mk_data((int)(data[2]-'L'),Decode64(data,3,58),version); |
303 | ligi | 283 | params_data_count++; |
284 | break; |
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285 | |||
164 | ligi | 286 | default: |
208 | ligi | 287 | other_data_count++; |
164 | ligi | 288 | break; |
289 | |||
290 | } |
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291 | |||
292 | |||
208 | ligi | 293 | |
164 | ligi | 294 | |
295 | } |
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296 | |||
208 | ligi | 297 | String o_msg=""; |
181 | ligi | 298 | |
303 | ligi | 299 | public boolean force_disconnect=true; |
181 | ligi | 300 | |
221 | ligi | 301 | public void close_connections(boolean force) |
208 | ligi | 302 | { |
221 | ligi | 303 | force_disconnect=force; |
208 | ligi | 304 | try{ reader.close(); } |
305 | catch (Exception inner_ex) { } |
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181 | ligi | 306 | |
208 | ligi | 307 | try{ writer.close(); } |
308 | catch (Exception inner_ex) { } |
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309 | |||
310 | try{ connection.close(); } |
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311 | catch (Exception inner_ex) { } |
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312 | |||
313 | connected=false; |
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314 | } |
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315 | |||
164 | ligi | 316 | // Thread to recieve data from Connection |
317 | public void run() |
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318 | { |
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319 | int[] data_set=new int[150]; |
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320 | int input; |
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321 | int pos=0; |
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322 | msg+="!!run started!!"; |
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323 | while(true) |
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324 | { |
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325 | if (!connected) |
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181 | ligi | 326 | { |
208 | ligi | 327 | if (!force_disconnect) connect(); |
181 | ligi | 328 | } |
164 | ligi | 329 | else |
330 | try{ |
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181 | ligi | 331 | |
164 | ligi | 332 | pos=0; |
333 | input=0; |
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334 | // recieve data-set |
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335 | while ((input != 13)) // &&(input!=-1)) |
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336 | { |
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314 | ligi | 337 | |
164 | ligi | 338 | input = reader.read() ; |
314 | ligi | 339 | if (proxy!=null) |
340 | proxy.writer.write(input); |
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164 | ligi | 341 | if (input==-1) throw new Exception("test"); |
342 | data_set[pos]=input; |
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343 | pos++; |
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344 | |||
345 | } |
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314 | ligi | 346 | |
347 | if (proxy!=null) |
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348 | { |
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349 | proxy.writer.write('\r'); |
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350 | proxy.writer.write('\n'); |
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351 | proxy.writer.flush(); |
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352 | } |
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353 | |||
164 | ligi | 354 | process_data(data_set,pos); |
355 | |||
356 | } |
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357 | catch (Exception ex) |
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358 | { |
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359 | msg="Problem reading from MK"; |
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360 | // close the connection |
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221 | ligi | 361 | close_connections(false); |
208 | ligi | 362 | |
363 | |||
164 | ligi | 364 | } |
365 | |||
366 | // sleep a bit to get someting more done |
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367 | try { Thread.sleep(50); } |
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368 | catch (Exception e) { } |
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369 | |||
370 | } // while |
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371 | |||
372 | |||
373 | } // run() |
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374 | |||
375 | |||
376 | } |