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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1947 | runge | 1 | |
| 2 | Mbb_Clients = {}; |
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| 3 | |||
| 4 | Mbb_Susbscribers = []; |
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| 5 | |||
| 6 | function Mbb_SubscribeToDeviceStatus(callback) |
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| 7 | { |
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| 8 | Mbb_Susbscribers.push(callback); |
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| 9 | } |
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| 10 | |||
| 11 | function Mbb_Connected(client_id) |
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| 12 | { |
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| 13 | Log(client_id + " connected!"); |
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| 14 | |||
| 15 | Mbb_Clients[client_id] = {}; |
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| 16 | } |
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| 17 | |||
| 18 | function Mbb_Disconnected(client_id) |
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| 19 | { |
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| 20 | Log(client_id + " disconnected!"); |
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| 21 | |||
| 22 | for (var n = 0; n < Mbb_Susbscribers.length; n++) |
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| 23 | { |
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| 24 | Mbb_Susbscribers[n]("disconnected", Mbb_Clients[client_id]); |
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| 25 | } |
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| 26 | |||
| 27 | delete Mbb_Clients[client_id]; |
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| 28 | } |
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| 29 | |||
| 30 | function Mbb_ReceivedData(client_id, data) |
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| 31 | { |
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| 1949 | runge | 32 | Log(data); |
| 33 | |||
| 1947 | runge | 34 | var json_data = eval("(" + data + ")"); |
| 35 | |||
| 36 | //Log(JSON.stringify(json_data)); |
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| 37 | |||
| 38 | if (json_data.method == "MBB.GpsNmeaData") |
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| 39 | { |
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| 1952 | runge | 40 | if (Mbb_Clients[client_id]) |
| 1947 | runge | 41 | { |
| 1952 | runge | 42 | if (json_data.params.nmea.substr(0, 6) == "$GPGGA") |
| 1947 | runge | 43 | { |
| 1952 | runge | 44 | Mbb_Clients[client_id]["LastNmea"]["GGA"] = json_data.params.nmea; |
| 1947 | runge | 45 | } |
| 1952 | runge | 46 | else if (json_data.params.nmea.substr(0, 6) == "$GPRMC") |
| 47 | { |
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| 48 | Mbb_Clients[client_id]["LastNmea"]["RMC"] = json_data.params.nmea; |
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| 49 | |||
| 50 | Mbb_Clients[client_id]["Position"] = _Mbb_NmeaToPosition(client_id); |
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| 51 | |||
| 52 | for (var n = 0; n < Mbb_Susbscribers.length; n++) |
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| 53 | { |
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| 54 | Mbb_Susbscribers[n]("position", Mbb_Clients[client_id]); |
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| 55 | } |
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| 56 | |||
| 57 | Mbb_Clients[client_id]["LastNmea"]["GGA"] = ""; |
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| 58 | Mbb_Clients[client_id]["LastNmea"]["RMC"] = ""; |
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| 59 | Mbb_Clients[client_id]["Position"] = false; |
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| 60 | } |
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| 1947 | runge | 61 | } |
| 1952 | runge | 62 | else |
| 63 | { |
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| 64 | Log("Got data from unknown tracker!"); |
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| 65 | } |
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| 1947 | runge | 66 | } |
| 1952 | runge | 67 | else if (json_data.method == "MBB.OnConnected") |
| 1947 | runge | 68 | { |
| 1952 | runge | 69 | json_data = { "params" : { "Imei" : "004401700721448" } }; // Temporary hack since we get corrupted data from the device |
| 1947 | runge | 70 | |
| 71 | Log("Client " + client_id + " has IMEI " + json_data.params.Imei); |
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| 72 | |||
| 73 | Mbb_Clients[client_id]["Id"] = client_id; |
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| 74 | Mbb_Clients[client_id]["Info"] = json_data.params; |
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| 1949 | runge | 75 | Mbb_Clients[client_id]["Position"] = false; |
| 1947 | runge | 76 | Mbb_Clients[client_id]["LastNmea"] = {}; |
| 77 | Mbb_Clients[client_id]["LastNmea"]["GGA"] = ""; |
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| 78 | Mbb_Clients[client_id]["LastNmea"]["RMC"] = ""; |
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| 79 | |||
| 80 | for (var n = 0; n < Mbb_Susbscribers.length; n++) |
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| 81 | { |
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| 82 | Mbb_Susbscribers[n]("connected", Mbb_Clients[client_id]); |
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| 83 | } |
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| 84 | } |
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| 1952 | runge | 85 | else |
| 1947 | runge | 86 | { |
| 1952 | runge | 87 | Log("Got unknown data \"" + data + "\" from client " + client_id); |
| 88 | } |
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| 1947 | runge | 89 | } |
| 90 | |||
| 91 | function Mbb_SendData(client_id, json_data) |
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| 92 | { |
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| 93 | return MbbExport_SendData(client_id, JSON.Stringify(json_data)); |
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| 94 | } |
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| 1949 | runge | 95 | |
| 96 | function _Mbb_NmeaToPosition(client_id) |
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| 97 | { |
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| 98 | /* |
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| 99 | GGA Global Positioning System Fix Data |
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| 100 | * 123519 Fix taken at 12:35:19 UTC |
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| 101 | * 4807.038,N Latitude 48 deg 07.038' N |
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| 102 | * 01131.000,E Longitude 11 deg 31.000' E |
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| 103 | 1 Fix quality: 0 = invalid |
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| 104 | 1 = GPS fix (SPS) |
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| 105 | 2 = DGPS fix |
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| 106 | 3 = PPS fix |
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| 107 | 4 = Real Time Kinematic |
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| 108 | 5 = Float RTK |
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| 109 | 6 = estimated (dead reckoning) (2.3 feature) |
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| 110 | 7 = Manual input mode |
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| 111 | 8 = Simulation mode |
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| 112 | * 08 Number of satellites being tracked |
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| 113 | * 0.9 Horizontal dilution of position |
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| 114 | * 545.4,M Altitude, Meters, above mean sea level |
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| 115 | * 46.9,M Height of geoid (mean sea level) above WGS84 |
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| 116 | ellipsoid |
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| 117 | (empty field) time in seconds since last DGPS update |
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| 118 | (empty field) DGPS station ID number |
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| 119 | *47 the checksum data, always begins with * |
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| 120 | |||
| 121 | |||
| 122 | $GPRMC,123519,A,4807.038,N,01131.000,E,022.4,084.4,230394,003.1,W*6A |
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| 123 | |||
| 124 | RMC Recommended Minimum sentence C |
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| 125 | * 123519 Fix taken at 12:35:19 UTC |
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| 126 | * A Status A=active or V=Void. |
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| 127 | * 4807.038,N Latitude 48 deg 07.038' N |
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| 128 | * 01131.000,E Longitude 11 deg 31.000' E |
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| 129 | * 022.4 Speed over the ground in knots |
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| 130 | * 084.4 Track angle in degrees True |
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| 131 | * 230394 Date - 23rd of March 1994 |
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| 132 | * 003.1,W Magnetic Variation |
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| 133 | *6A The checksum data, always begins with * |
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| 134 | */ |
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| 135 | |||
| 136 | |||
| 137 | var nmea_rmc_parts = Mbb_Clients[client_id]["LastNmea"]["RMC"].split(","); |
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| 138 | |||
| 139 | if (nmea_rmc_parts[2] == "A") |
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| 140 | { |
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| 141 | var nmea_gga_parts = Mbb_Clients[client_id]["LastNmea"]["GGA"].split(","); |
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| 142 | var position = {}; |
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| 143 | |||
| 144 | position["Datetime"] = "20" + nmea_rmc_parts[9].substr(4, 2) + "-" + nmea_rmc_parts[9].substr(2, 2) + "-" + nmea_rmc_parts[9].substr(0, 2); |
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| 145 | position["Datetime"] += " " + nmea_rmc_parts[1].substr(0, 2) + ":" + nmea_rmc_parts[1].substr(2, 2) + ":" + nmea_rmc_parts[1].substr(4, 2) + " UTC"; |
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| 146 | |||
| 147 | |||
| 1950 | runge | 148 | /* Calculate decimal latitude */ |
| 149 | var degrees = parseFloat(nmea_rmc_parts[3].substr(0, 2)); |
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| 150 | var decimal = parseFloat(nmea_rmc_parts[3].substr(2)); |
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| 1949 | runge | 151 | |
| 1950 | runge | 152 | position["Latitude"] = degrees + (decimal / 60.0); |
| 1949 | runge | 153 | |
| 1950 | runge | 154 | if (nmea_rmc_parts[4] == "S") |
| 155 | { |
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| 156 | position["Latitude"] = -position["Latitude"]; |
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| 157 | } |
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| 158 | |||
| 159 | /* Calculate decimal longitude */ |
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| 160 | var degrees = parseFloat(nmea_rmc_parts[5].substr(0, 3)); |
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| 161 | var decimal = parseFloat(nmea_rmc_parts[5].substr(3)); |
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| 1949 | runge | 162 | |
| 1950 | runge | 163 | position["Longitude"] = degrees + (decimal / 60.0); |
| 164 | |||
| 165 | if (nmea_rmc_parts[6] == "W") |
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| 166 | { |
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| 167 | position["Longitude"] = -position["Longitude"]; |
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| 168 | } |
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| 169 | |||
| 170 | position["Hdop"] = nmea_gga_parts[8]; |
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| 171 | |||
| 172 | position["Satellites"] = nmea_gga_parts[7]; |
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| 173 | |||
| 174 | position["Altitude"] = nmea_gga_parts[9]; // Meters |
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| 175 | position["HeightOfGeoid"] = nmea_gga_parts[11] // Meters |
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| 176 | |||
| 177 | position["Speed"] = nmea_rmc_parts[7]; // Knots |
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| 178 | position["Angle"] = nmea_rmc_parts[8]; |
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| 179 | |||
| 1949 | runge | 180 | if (nmea_rmc_parts[10] != "") |
| 181 | { |
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| 1950 | runge | 182 | position["MagneticDeclination"] = parseFloat(nmea_rmc_parts[10]); |
| 183 | |||
| 184 | if (nmea_rmc_parts[11].substr(0, 1) == "W") |
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| 185 | { |
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| 186 | position["MagneticDeclination"] = -position["MagneticDeclination"]; |
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| 187 | } |
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| 1949 | runge | 188 | } |
| 189 | |||
| 190 | return position; |
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| 191 | } |
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| 192 | |||
| 193 | return false; |
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| 194 | } |