MOKOSMART - Lw004 Pb

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/* * LW004-PB */ function signed_convert(val, bitwidth) { const isnegative = val & (1 << (bitwidth - 1)); const boundary = (1 << bitwidth); const minval = -boundary; const mask = boundary - 1; return isnegative ? minval + (val & mask) : val; } function Decoder(bytes,beacon_decoder_aux) { // Decode an uplink message from a buffer // (array) of bytes to an object of fields. const battery_level = bytes[0]; const alarm_status = bytes[1]; let lat = bytes[5]<<24 | bytes [4]<<16 | bytes[3]<<8 | bytes[2]; lat = signed_convert(lat,32); lat = lat*90/8388607; let lng = bytes[9]<<24 | bytes [8]<<16 | bytes[7]<<8 | bytes[6]; lng = signed_convert(lng,32); lng = lng*180/8388607; // bytes.lenght === 25 only one beacon send, no need to split and put metadata if(bytes.length === 25){ const first_mac_beacon_addr = bytes[10]<<40 | bytes[11]<<32 | bytes[12]<<24 | bytes[13]<<16 | bytes[14]<<8 | bytes[15]; const first_mac_beacon_rssi = (bytes[16]) - 256; const X_axis_acceleration = (bytes[17]<<8 | bytes[18])*2/32768; const y_axis_acceleration = (bytes[19]<<8 | bytes[20])*2/32768; const z_axis_acceleration = (bytes[21]<<8 | bytes[22])*2/32768; const angular = bytes[23]<<8 | bytes[24]; return [ {variable:"battery_level",value:battery_level,unit:"%"}, {variable:"alarm_status",value:alarm_status}, {variable: "gps_location", location: {lat,lng}, value: `${lat},${lng}`}, {variable:first_mac_beacon_addr,value:first_mac_beacon_rssi}, {variable:"X_axis_acceleration",value:X_axis_acceleration,unit:"g"}, {variable:"y_axis_acceleration",value:y_axis_acceleration,unit:"g"}, {variable:"z_axis_acceleration",value:z_axis_acceleration,unit:"g"}, {variable:"angular",value:angular, unit:"degree"}, ] } // bytes.lenght === 32 two beacon send, need to split and put metadata if(bytes.length === 32){ const first_mac_beacon_addr = bytes[10]<<40 | bytes[11]<<32 | bytes[12]<<24 | bytes[13]<<16 | bytes[14]<<8 | bytes[15]; const first_mac_beacon_rssi = (bytes[16]) - 256; const second_mac_beacon_addr = bytes[17]<<40 | bytes[18]<<32 | bytes[19]<<24 | bytes[20]<<16 | bytes[21]<<8 | bytes[22]; const second_mac_beacon_rssi = (bytes[23]) - 256; const X_axis_acceleration = (bytes[24]<<8 | bytes[25])*2/32768; const y_axis_acceleration = (bytes[26]<<8 | bytes[27])*2/32768; const z_axis_acceleration = (bytes[28]<<8 | bytes[29])*2/32768; const angular = bytes[30]<<8 | bytes[31]; if(beacon_decoder_aux === "simple"){ let string_value = ""; string_value= string_value.concat(first_mac_beacon_addr,":" ,first_mac_beacon_rssi,";",second_mac_beacon_addr,":",second_mac_beacon_rssi); return [ {variable:"battery_level",value:battery_level,unit:"%"}, {variable:"alarm_status",value:alarm_status}, {variable: "gps_location", location: {lat,lng}, value: `${lat},${lng}`}, { variable: "beacons", value: string_value, metadata: { [first_mac_beacon_addr]: first_mac_beacon_rssi, [second_mac_beacon_addr]: second_mac_beacon_rssi, } }, {variable:"X_axis_acceleration",value:X_axis_acceleration,unit:"g"}, {variable:"y_axis_acceleration",value:y_axis_acceleration,unit:"g"}, {variable:"z_axis_acceleration",value:z_axis_acceleration,unit:"g"}, {variable:"angular",value:angular, unit:"degree"}, ] } if(beacon_decoder_aux === "splitted"){ return [ {variable:"battery_level",value:battery_level,unit:"%"}, {variable:"alarm_status",value:alarm_status}, {variable: "gps_location", location: {lat,lng}, value: `${lat},${lng}`}, {variable:first_mac_beacon_addr,value:first_mac_beacon_rssi}, {variable:second_mac_beacon_addr,value:second_mac_beacon_rssi}, {variable:"X_axis_acceleration",value:X_axis_acceleration,unit:"g"}, {variable:"y_axis_acceleration",value:y_axis_acceleration,unit:"g"}, {variable:"z_axis_acceleration",value:z_axis_acceleration,unit:"g"}, {variable:"angular",value:angular, unit:"degree"}, ] } } // bytes.lenght === 39 three beacon send, need to split and put metadata if(bytes.length === 39){ const first_mac_beacon_addr = bytes[10]<<40 | bytes[11]<<32 | bytes[12]<<24 | bytes[13]<<16 | bytes[14]<<8 | bytes[15]; const first_mac_beacon_rssi = (bytes[16]) - 256; const second_mac_beacon_addr = bytes[17]<<40 | bytes[18]<<32 | bytes[19]<<24 | bytes[20]<<16 | bytes[21]<<8 | bytes[22]; const second_mac_beacon_rssi = (bytes[23]) - 256; const third_mac_beacon_addr = bytes[24]<<40 | bytes[25]<<32 | bytes[26]<<24 | bytes[27]<<16 | bytes[28]<<8 | bytes[29]; const third_mac_beacon_rssi = (bytes[30]) - 256; const X_axis_acceleration = (bytes[31]<<8 | bytes[32])*2/32768; const y_axis_acceleration = (bytes[33]<<8 | bytes[34])*2/32768; const z_axis_acceleration = (bytes[35]<<8 | bytes[36])*2/32768; const angular = bytes[37]<<8 | bytes[38]; if(beacon_decoder_aux === "simple"){ let string_value = ""; string_value= string_value.concat(first_mac_beacon_addr,":" ,first_mac_beacon_rssi,";",second_mac_beacon_addr,":",second_mac_beacon_rssi,";",third_mac_beacon_addr,":",third_mac_beacon_rssi); return [ {variable:"battery_level",value:battery_level,unit:"%"}, {variable:"alarm_status",value:alarm_status}, {variable: "gps_location", location: {lat,lng}, value:`${lat},${lng}`}, { variable: "beacons", value: string_value, metadata: { [first_mac_beacon_addr]: first_mac_beacon_rssi, [second_mac_beacon_addr]: second_mac_beacon_rssi, [third_mac_beacon_addr]: third_mac_beacon_rssi, } }, {variable:"X_axis_acceleration",value:X_axis_acceleration,unit:"g"}, {variable:"y_axis_acceleration",value:y_axis_acceleration,unit:"g"}, {variable:"z_axis_acceleration",value:z_axis_acceleration,unit:"g"}, {variable:"angular",value:angular, unit:"degree"}, ] } if(beacon_decoder_aux === "splitted"){ return [ {variable:"battery_level",value:battery_level,unit:"%"}, {variable:"alarm_status",value:alarm_status}, {variable: "gps_location", location: {lat,lng}, value: `${lat},${lng}`}, {variable:first_mac_beacon_addr,value:first_mac_beacon_rssi}, {variable:second_mac_beacon_addr,value:second_mac_beacon_rssi}, {variable:third_mac_beacon_addr,value:third_mac_beacon_rssi}, {variable:"X_axis_acceleration",value:X_axis_acceleration,unit:"g"}, {variable:"y_axis_acceleration",value:y_axis_acceleration,unit:"g"}, {variable:"z_axis_acceleration",value:z_axis_acceleration,unit:"g"}, {variable:"angular",value:angular, unit:"degree"}, ] } } // bytes.lenght === 46 four beacon send, need to split and put metadata if(bytes.length === 46){ const first_mac_beacon_addr = bytes[10]<<40 | bytes[11]<<32 | bytes[12]<<24 | bytes[13]<<16 | bytes[14]<<8 | bytes[15]; const first_mac_beacon_rssi = (bytes[16]) - 256; const second_mac_beacon_addr = bytes[17]<<40 | bytes[18]<<32 | bytes[19]<<24 | bytes[20]<<16 | bytes[21]<<8 | bytes[22]; const second_mac_beacon_rssi = (bytes[23]) - 256; const third_mac_beacon_addr = bytes[24]<<40 | bytes[25]<<32 | bytes[26]<<24 | bytes[27]<<16 | bytes[28]<<8 | bytes[29]; const third_mac_beacon_rssi = (bytes[30]) - 256; const fourth_mac_beacon_addr = bytes[31]<<40 | bytes[32]<<32 | bytes[33]<<24 | bytes[34]<<16 | bytes[35]<<8 | bytes[36]; const fourth_mac_beacon_rssi = (bytes[37]) - 256; const X_axis_acceleration = (bytes[38]<<8 | bytes[39])*2/32768; const y_axis_acceleration = (bytes[40]<<8 | bytes[41])*2/32768; const z_axis_acceleration = (bytes[42]<<8 | bytes[43])*2/32768; const angular = bytes[44]<<8 | bytes[45]; if(beacon_decoder_aux === "simple"){ let string_value = ""; string_value= string_value.concat(first_mac_beacon_addr,":" ,first_mac_beacon_rssi,";",second_mac_beacon_addr,":",second_mac_beacon_rssi,";",third_mac_beacon_addr,":",third_mac_beacon_rssi,";",fourth_mac_beacon_addr,":",fourth_mac_beacon_rssi); return [ {variable:"battery_level",value:battery_level,unit:"%"}, {variable:"alarm_status",value:alarm_status}, {variable: "gps_location", location: {lat,lng}, value: `${lat},${lng}`}, { variable: "beacons", value: string_value, metadata: { [first_mac_beacon_addr]: first_mac_beacon_rssi, [second_mac_beacon_addr]: second_mac_beacon_rssi, [third_mac_beacon_addr]: third_mac_beacon_rssi, [fourth_mac_beacon_addr]: fourth_mac_beacon_rssi, } }, {variable:"X_axis_acceleration",value:X_axis_acceleration,unit:"g"}, {variable:"y_axis_acceleration",value:y_axis_acceleration,unit:"g"}, {variable:"z_axis_acceleration",value:z_axis_acceleration,unit:"g"}, {variable:"angular",value:angular, unit:"degree"}, ] } if(beacon_decoder_aux === "splitted"){ return [ {variable:"battery_level",value:battery_level,unit:"%"}, {variable:"alarm_status",value:alarm_status}, {variable: "gps_location", location: {lat,lng}, value: `${lat},${lng}`}, {variable:first_mac_beacon_addr,value:first_mac_beacon_rssi}, {variable:second_mac_beacon_addr,value:second_mac_beacon_rssi}, {variable:third_mac_beacon_addr,value:third_mac_beacon_rssi}, {variable:fourth_mac_beacon_addr,value:fourth_mac_beacon_rssi}, {variable:"X_axis_acceleration",value:X_axis_acceleration,unit:"g"}, {variable:"y_axis_acceleration",value:y_axis_acceleration,unit:"g"}, {variable:"z_axis_acceleration",value:z_axis_acceleration,unit:"g"}, {variable:"angular",value:angular, unit:"degree"}, ] } } } const payload_raw = payload.find((x) => x.variable === "payload_raw" || x.variable === "payload" || x.variable === "data"); let beacon_decoder = device.params.find((x) => x.key === "beacon_decoder"); if (beacon_decoder.value === "simple") { beacon_decoder = "simple"; } else if(beacon_decoder === "splitted"){ beacon_decoder = "splitted"; } if (payload_raw) { try { // Convert the data from Hex to Javascript Buffer. const buffer = Buffer.from(payload_raw.value, "hex"); const serie = new Date().getTime(); const payload_aux = Decoder(buffer,beacon_decoder); payload = payload.concat(payload_aux.map((x) => ({ ...x, serie }))); } catch (e) { // Print the error to the Live Inspector. console.error(e); // Return the variable parse_error for debugging. payload = [{ variable: "parse_error", value: e.message }]; } }