GLOBALSAT - St 100

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function toTagoFormat(object_item, serie, prefix = '') { const result = []; for (const key in object_item) { if (typeof object_item[key] == 'object') { result.push({ variable: object_item[key].variable || `${prefix}${key}`, value: object_item[key].value, serie: object_item[key].serie || serie, metadata: object_item[key].metadata, location: object_item[key].location, unit: object_item[key].unit, }); } else { result.push({ variable: `${prefix}${key}`, value: object_item[key], serie, }); } } return result; } function hex2bin4Byte(hex) { return (parseInt(hex, 16).toString(2)).padStart(32, '0'); } function twoComplement(hexString) { let tempBIN = hex2bin4Byte(hexString); if (tempBIN[0] === '0') { return (parseInt(tempBIN, 2)) * 0.000001; } tempBIN = tempBIN.replace(/1/g, 2); tempBIN = tempBIN.replace(/0/g, 1); tempBIN = tempBIN.replace(/2/g, 0); const result = ~parseInt(tempBIN, 2) * 0.000001; return result; } const data = payload.find(x => x.variable === 'data'); if (data) { const time = data.time || new Date().toISOString(); const serie = data.serie || new Date().getTime(); const buffer = Buffer.from(data.value, 'hex'); // 00 82 5b 017d6b19 073dc188 const status = Number(buffer[1] / 64).toFixed(0); const report_type = Number(buffer[1] % 64).toFixed(0); const battery_capacity = Number(buffer[2]).toFixed(1); const lat = twoComplement(data.value.slice(6, 14)); const lng = twoComplement(data.value.slice(14, data.value.length)); const tagodata = { status: { value: Number(status), time, serie }, report_type: { value: Number(report_type), time, serie }, battery_capacity: { value: Number(battery_capacity), time, serie, unit: '%' }, location: { value: `${lat}, ${lng}`, time, serie, location: { lat, lng } }, }; payload = payload.concat(toTagoFormat(tagodata)); }