TTN Smart Sensor (Arwin-Technology)

Codec Preview

var lrs2m001_meter_events = ['heartbeat/button', 'bakcup power', 'ph_C_under_V', 'ph_C_over_V', 'ph_B_under_V', 'ph_B_over_V', 'ph_A_under_V', 'ph_A_over_V', 'backup_batt_low']; var lrs2m001_phase_events = ['over_current','heartbeat/button']; var decoded; function hex2dec(hex) { var dec = hex&0x3fffff; if (dec & 0x200000) dec = -(0x400000-dec); return dec; } function decodePhaseData(input, channel, phase) { var evt_amp = input.bytes[1]<<8|input.bytes[2]; var pow_pf = input.bytes[3]<<24|input.bytes[4]<<16|input.bytes[5]<<8|input.bytes[6]; var evt=""; for (let i=0; i<2; i++) { if ((0x01<>14)) if (evt==="") evt=lrs2m001_phase_events[i]; else evt=evt+","+lrs2m001_phase_events[i]; } if (input.bytes[0] === 0x0a) { return { data: { channel: channel, phase: phase, event: evt, current: (evt_amp&0x3fff)/10, active_pow: hex2dec(pow_pf>>10)/10, power_factor: (pow_pf&0x03ff)/1000, active_energy: (input.bytes[7]<<24|input.bytes[8]<<16|input.bytes[9]<<8|input.bytes[10])/10 } } } else { return { error: ['unknown packet type'] }; } } function decodeUplink(input) { switch (input.fPort) { case 10: // meter data var freq_evt = input.bytes[7]<<16|input.bytes[8]<<8|input.bytes[9]; var evt=""; for (let i=0; i<10; i++) { if ((0x01<>10, backup_batt: input.bytes[10], }, }; case 50: decoded = decodePhaseData(input, 1, 'A'); return decoded; case 51: decoded = decodePhaseData(input, 1, 'B'); return decoded; case 52: decoded = decodePhaseData(input, 1, 'C'); return decoded; case 53: decoded = decodePhaseData(input, 2, 'A'); return decoded; case 54: decoded = decodePhaseData(input, 2, 'B'); return decoded; case 55: decoded = decodePhaseData(input, 2, 'C'); return decoded; case 56: decoded = decodePhaseData(input, 3, 'A'); return decoded; case 57: decoded = decodePhaseData(input, 3, 'B'); return decoded; case 58: decoded = decodePhaseData(input, 3, 'C'); return decoded; case 59: decoded = decodePhaseData(input, 4, 'A'); return decoded; case 60: decoded = decodePhaseData(input, 4, 'B'); return decoded; case 61: decoded = decodePhaseData(input, 4, 'C'); return decoded; case 8: // version var ver = input.bytes[0]+"."+("00"+input.bytes[1]).slice(-2)+"."+("000"+(input.bytes[2]<<8|input.bytes[3])).slice(-3); return { data: { firmwareVersion: ver, } }; case 16: // device settings if (input.bytes[0] === 0x0a) { return { data: { dataUploadInterval: input.bytes[1]<<8|input.bytes[2], underVoltageLimit: input.bytes[3]<<8|input.bytes[4], overVoltageLimit: input.bytes[5]<<8|input.bytes[6], overCurrentLimit: input.bytes[7]<<8|input.bytes[8], } }; } else { return { error: ['unknown packet type'] }; } break; default: return { errors: ['unknown FPort'], }; } } function encodeDownlink(input) { var payload = []; if (input.data.cmd === 'getFirmwareVersion') { return { fPort: 20, bytes: [0] }; } else if (input.data.cmd === 'getDeviceSettings') { return { fPort: 21, bytes: [0] }; } else if (input.data.cmd === 'setDeviceSettings') { var ult = input.data.dataUploadInterval; var uvl = input.data.underVoltageLimit; var ovl = input.data.overVoltageLimit; var ocl = input.data.overCurrentLimit; var dack = 1; return { fPort: 22, bytes: payload.concat(ult>>8,ult&0xff,uvl>>8,uvl&0xff,ovl>>8,ovl&0xff,ocl>>8,ocl&0xff,dack) }; } }