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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; |
495 | ligi | 54 | DUBwise root; |
55 | |||
164 | ligi | 56 | /****************** Section: public Methods ************************************************/ |
495 | ligi | 57 | public MKCommunicator(DUBwise root_) |
164 | ligi | 58 | { |
495 | ligi | 59 | root=root_; |
210 | ligi | 60 | version=new MKVersion(); |
181 | ligi | 61 | debug_data=new MKDebugData(); |
303 | ligi | 62 | params=new MKParamsParser(); |
63 | // mk_url=url; // remember URL for connecting / reconnecting later |
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181 | ligi | 64 | |
303 | ligi | 65 | LCD= new MKLCD(this); |
66 | watchdog=new MKWatchDog(this); |
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164 | ligi | 67 | new Thread( this ).start(); // fire up main Thread |
68 | } |
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69 | |||
70 | |||
314 | ligi | 71 | public void do_proxy(String proxy_url) |
72 | { |
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73 | proxy=new MKProxy(proxy_url); |
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74 | } |
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303 | ligi | 75 | |
76 | // 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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77 | public void connect_to(String _url,String _name) |
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78 | { |
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79 | mk_url=_url; |
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80 | name=_name; |
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81 | force_disconnect=false; |
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82 | connected=false; |
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83 | } |
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84 | |||
164 | ligi | 85 | /****************** Section: private Methods ************************************************/ |
86 | private void connect() |
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87 | { |
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303 | ligi | 88 | |
164 | ligi | 89 | try{ |
90 | connection = (StreamConnection) Connector.open(mk_url, Connector.READ_WRITE); |
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91 | reader=connection.openInputStream(); |
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92 | writer=connection.openOutputStream(); |
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181 | ligi | 93 | |
94 | connection_start_time=System.currentTimeMillis(); |
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164 | ligi | 95 | connected=true; // if we get here everything seems to be OK |
181 | ligi | 96 | get_version(); |
221 | ligi | 97 | lcd_data_count=0; |
98 | debug_data_count=0; |
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99 | version_data_count=0; |
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100 | |||
303 | ligi | 101 | |
164 | ligi | 102 | } |
103 | catch (Exception ex) |
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104 | { |
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105 | // TODO difference fatal errors from those which will lead to reconnection |
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106 | msg="Problem connecting" + "\n" + ex; |
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107 | } |
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181 | ligi | 108 | |
109 | |||
110 | |||
164 | ligi | 111 | } |
112 | |||
113 | |||
114 | |||
115 | public int[] Decode64(int[] in_arr, int offset,int len) |
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116 | { |
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117 | int ptrIn=offset; |
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118 | int a,b,c,d,x,y,z; |
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119 | int ptr=0; |
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120 | |||
121 | int[] out_arr=new int[len]; |
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122 | |||
123 | while(len!=0) |
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124 | { |
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125 | a = in_arr[ptrIn++] - '='; |
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126 | b = in_arr[ptrIn++] - '='; |
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127 | c = in_arr[ptrIn++] - '='; |
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128 | d = in_arr[ptrIn++] - '='; |
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129 | //if(ptrIn > max - 2) break; // nicht mehr Daten verarbeiten, als empfangen wurden |
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130 | |||
131 | x = (a << 2) | (b >> 4); |
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132 | y = ((b & 0x0f) << 4) | (c >> 2); |
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133 | z = ((c & 0x03) << 6) | d; |
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134 | |||
135 | if((len--)!=0) out_arr[ptr++] = x; else break; |
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136 | if((len--)!=0) out_arr[ptr++] = y; else break; |
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137 | if((len--)!=0) out_arr[ptr++] = z; else break; |
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138 | } |
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139 | |||
140 | return out_arr; |
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141 | |||
142 | } |
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143 | |||
325 | ligi | 144 | // FC - Function Mappers |
164 | ligi | 145 | |
146 | // 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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147 | public void get_version() |
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148 | { |
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149 | send_command(0,'v',new int[0]); |
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150 | } |
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151 | |||
303 | ligi | 152 | // send a MotorTest request - params are the speed for each Motor |
231 | ligi | 153 | public void motor_test(int[] params) |
154 | { |
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155 | send_command(0,'t',params); |
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156 | } |
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157 | |||
475 | ligi | 158 | public void send_keys(int[] params) |
159 | { |
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160 | send_command(0,'k',params); |
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161 | } |
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162 | |||
303 | ligi | 163 | // get params |
164 | public void get_params(int id) |
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165 | { |
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166 | int[] params=new int[1]; |
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167 | params[0]=id; |
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231 | ligi | 168 | |
325 | ligi | 169 | while(sending) |
170 | {try { Thread.sleep(50); } |
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171 | catch (Exception e) { } |
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172 | } |
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173 | |||
303 | ligi | 174 | send_command(0,'q',params); |
175 | } |
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176 | |||
325 | ligi | 177 | public void trigger_LCD(int key) |
178 | { |
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179 | if (sending) return; |
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303 | ligi | 180 | |
325 | ligi | 181 | |
182 | int[] params=new int[3]; |
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183 | params[0]=key; |
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184 | params[1]=0; |
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185 | params[2]=0; |
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186 | |||
187 | send_command(0,'h',params); |
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188 | |||
189 | } |
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303 | ligi | 190 | |
191 | |||
325 | ligi | 192 | public void write_params() |
193 | { |
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194 | while(sending) |
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195 | {try { Thread.sleep(50); } |
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196 | catch (Exception e) { } |
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197 | } |
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198 | |||
199 | send_command(0,(char)('l'+params.act_paramset),params.field[params.act_paramset]); |
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200 | } |
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201 | |||
202 | |||
203 | boolean sending=false; |
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204 | |||
164 | ligi | 205 | // send command to FC ( add crc and pack into pseudo Base64 |
206 | public void send_command(int modul,char cmd,int[] params) |
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207 | { |
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325 | ligi | 208 | sending=true; |
164 | ligi | 209 | 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 |
210 | send_buff[0]='#'; |
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211 | send_buff[1]=(char)modul; |
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212 | send_buff[2]=cmd; |
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213 | |||
208 | ligi | 214 | for(int param_pos=0;param_pos<(params.length/3 + (params.length%3==0?0:1)) ;param_pos++) |
215 | { |
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231 | ligi | 216 | int a = (param_pos*3<params.length)?params[param_pos*3]:0; |
217 | int b = ((param_pos*3+1)<params.length)?params[param_pos*3+1]:0; |
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218 | int c = ((param_pos*3+2)<params.length)?params[param_pos*3+2]:0; |
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208 | ligi | 219 | |
220 | send_buff[3+param_pos*4] = (char)((a >> 2)+'=' ); |
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221 | send_buff[3+param_pos*4+1] = (char)('=' + (((a & 0x03) << 4) | ((b & 0xf0) >> 4))); |
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222 | send_buff[3+param_pos*4+2] = (char)('=' + (((b & 0x0f) << 2) | ((c & 0xc0) >> 6))); |
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223 | send_buff[3+param_pos*4+3] = (char)('=' + ( c & 0x3f)); |
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224 | |||
225 | //send_buff[3+foo]='='; |
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226 | } |
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227 | |||
228 | /* for(int foo=0;foo<(params.length/3 + (params.length%3==0?0:1) )*4;foo++) |
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229 | { |
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230 | int a = (foo<params.length) params[foo]; |
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231 | int a = params[foo]; |
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232 | |||
233 | //send_buff[3+foo]='='; |
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234 | } |
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235 | */ |
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164 | ligi | 236 | try |
237 | { |
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238 | int tmp_crc=0; |
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239 | for ( int tmp_i=0; tmp_i<send_buff.length;tmp_i++) |
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240 | { |
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241 | tmp_crc+=(int)send_buff[tmp_i]; |
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242 | writer.write(send_buff[tmp_i]); |
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243 | } |
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244 | tmp_crc%=4096; |
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245 | writer.write( (char)(tmp_crc/64 + '=')); |
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246 | writer.write( (char)(tmp_crc%64 + '=')); |
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247 | writer.write('\r'); |
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248 | writer.flush(); |
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249 | } |
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250 | catch (Exception e) |
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251 | { // problem sending data to FC |
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252 | } |
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325 | ligi | 253 | |
254 | sending=false; |
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164 | ligi | 255 | } |
256 | |||
210 | ligi | 257 | |
164 | ligi | 258 | public void process_data(int[] data,int len) |
259 | { |
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260 | int[] decoded_data; |
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261 | |||
181 | ligi | 262 | |
164 | ligi | 263 | switch((char)data[2]) |
264 | { |
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265 | |||
266 | case 'D': // debug Data |
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208 | ligi | 267 | debug_data_count++; |
475 | ligi | 268 | debug_data.set_by_mk_data(Decode64(data,3,len-3),version); |
164 | ligi | 269 | break; |
270 | |||
271 | case 'V': // Version Info |
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208 | ligi | 272 | version_data_count++; |
210 | ligi | 273 | version.set_by_mk_data(Decode64(data,3,6)); |
208 | ligi | 274 | break; |
275 | |||
276 | case '0': |
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277 | case '1': |
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278 | case '2': |
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279 | case '3': |
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280 | LCD.handle_lcd_data(Decode64(data,3,20),data[2]-(int)'0'); |
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281 | lcd_data_count++; |
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164 | ligi | 282 | break; |
208 | ligi | 283 | |
303 | ligi | 284 | case 'L': |
285 | case 'M': |
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286 | case 'N': |
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287 | case 'O': |
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288 | case 'P': |
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475 | ligi | 289 | params.set_by_mk_data((int)(data[2]-'L'),Decode64(data,3,len-3),version); |
303 | ligi | 290 | params_data_count++; |
291 | break; |
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292 | |||
164 | ligi | 293 | default: |
208 | ligi | 294 | other_data_count++; |
164 | ligi | 295 | break; |
296 | |||
297 | } |
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298 | |||
299 | |||
208 | ligi | 300 | |
164 | ligi | 301 | |
302 | } |
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303 | |||
208 | ligi | 304 | String o_msg=""; |
181 | ligi | 305 | |
303 | ligi | 306 | public boolean force_disconnect=true; |
181 | ligi | 307 | |
221 | ligi | 308 | public void close_connections(boolean force) |
208 | ligi | 309 | { |
495 | ligi | 310 | if (!force) root.vibrate(500); |
221 | ligi | 311 | force_disconnect=force; |
208 | ligi | 312 | try{ reader.close(); } |
313 | catch (Exception inner_ex) { } |
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181 | ligi | 314 | |
208 | ligi | 315 | try{ writer.close(); } |
316 | catch (Exception inner_ex) { } |
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317 | |||
318 | try{ connection.close(); } |
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319 | catch (Exception inner_ex) { } |
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320 | |||
321 | connected=false; |
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322 | } |
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323 | |||
164 | ligi | 324 | // Thread to recieve data from Connection |
325 | public void run() |
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326 | { |
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327 | int[] data_set=new int[150]; |
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328 | int input; |
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329 | int pos=0; |
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330 | msg+="!!run started!!"; |
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331 | while(true) |
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332 | { |
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333 | if (!connected) |
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181 | ligi | 334 | { |
208 | ligi | 335 | if (!force_disconnect) connect(); |
181 | ligi | 336 | } |
164 | ligi | 337 | else |
338 | try{ |
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181 | ligi | 339 | |
164 | ligi | 340 | pos=0; |
341 | input=0; |
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342 | // recieve data-set |
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343 | while ((input != 13)) // &&(input!=-1)) |
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344 | { |
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314 | ligi | 345 | |
164 | ligi | 346 | input = reader.read() ; |
314 | ligi | 347 | if (proxy!=null) |
348 | proxy.writer.write(input); |
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164 | ligi | 349 | if (input==-1) throw new Exception("test"); |
350 | data_set[pos]=input; |
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351 | pos++; |
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352 | |||
353 | } |
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314 | ligi | 354 | |
355 | if (proxy!=null) |
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356 | { |
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357 | proxy.writer.write('\r'); |
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358 | proxy.writer.write('\n'); |
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359 | proxy.writer.flush(); |
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360 | } |
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361 | |||
164 | ligi | 362 | process_data(data_set,pos); |
363 | |||
364 | } |
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365 | catch (Exception ex) |
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366 | { |
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367 | msg="Problem reading from MK"; |
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368 | // close the connection |
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221 | ligi | 369 | close_connections(false); |
208 | ligi | 370 | |
371 | |||
164 | ligi | 372 | } |
373 | |||
374 | // sleep a bit to get someting more done |
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375 | try { Thread.sleep(50); } |
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376 | catch (Exception e) { } |
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377 | |||
378 | } // while |
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379 | |||
380 | |||
381 | } // run() |
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382 | |||
383 | |||
384 | } |