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