TTN Smart Sensor (Sezo)

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function decodeUplink(input) { /** * @reference https://github.com/myDevicesIoT/cayenne-docs/blob/master/docs/LORA.md * * * Type IPSO LPP Hex Data Size Data Resolution per bit * Digital Input 3200 0 0 1 1 * Digital Output 3201 1 1 1 1 * Analog Input 3202 2 2 2 0.01 Signed * Analog Output 3203 3 3 2 0.01 Signed * Counter Input 5501 4 4 2 1 event Unsigned MSB * Illuminance Sensor 3301 101 65 2 1 Lux Unsigned MSB * Presence Sensor 3302 102 66 1 1 * Temperature Sensor 3303 103 67 2 0.1 °C Signed MSB * Humidity Sensor 3304 104 68 1 0.5 % Unsigned * Accelerometer 3313 113 71 6 0.001 G Signed MSB per axis * Barometer 3315 115 73 2 0.1 hPa Unsigned MSB * Gyrometer 3334 134 86 6 0.01 °/s Signed MSB per axis * GPS Location 3336 136 88 9 Latitude : 0.0001 ° Signed MSB * Longitude : 0.0001 ° Signed MSB * Altitude : 0.01 meter Signed MSB SEZO specific types * Loudness - 200 C8 2 0.01 Signed * Particle Matter PM1 - 201 C9 1 1 * Particle Matter PM2.5 - 202 CA 1 1 * Particle Matter PM4 - 203 CB 1 1 * Particle Matter PM10 - 204 CC 1 1 * Index air quality - 205 CD 2 1 */ var sensor_types = { 0 : {'size': 1, 'name': 'digital_input', 'readable_name': 'Digital Input', 'signed': false, 'divisor': 1,}, 1 : {'size': 1, 'name': 'digital_output', 'readable_name': 'Digital Output', 'signed': false, 'divisor': 1,}, 2 : {'size': 2, 'name': 'analog_input', 'readable_name': 'Analog Input', 'signed': true , 'divisor': 100,}, 3 : {'size': 2, 'name': 'analog_output', 'readable_name': 'Analog Output', 'signed': true , 'divisor': 100,}, 4 : {'size': 2, 'name': 'counter_input', 'readable_name': 'Counter Input', 'signed': false, 'divisor': 1,}, 101: {'size': 2, 'name': 'luminosity', 'readable_name': 'Illuminance Sensor', 'signed': false, 'divisor': 1,}, 102: {'size': 1, 'name': 'presence', 'readable_name': 'Presence Sensor', 'signed': false, 'divisor': 1,}, 103: {'size': 2, 'name': 'temperature', 'readable_name': 'Temperature Sensor', 'signed': true , 'divisor': 10,}, 104: {'size': 1, 'name': 'humidity', 'readable_name': 'Humidity Sensor', 'signed': false, 'divisor': 2,}, 113: {'size': 6, 'name': 'accelerometer', 'readable_name': 'Accelerometer', 'signed': true , 'divisor': [1000,1000,1000],}, 114: {'size': 6, 'name': 'magnetometer', 'readable_name': 'Magnetometer', 'signed': true , 'divisor': [1000,1000,1000],}, 115: {'size': 2, 'name': 'barometer', 'readable_name': 'Barometer', 'signed': false, 'divisor': 10,}, 134: {'size': 6, 'name': 'gyrometer', 'readable_name': 'Gyrometer', 'signed': true , 'divisor': 100,}, 136: {'size': 9, 'name': 'gps_location', 'readable_name': 'GPS Location', 'signed': false, 'divisor': [10000,10000,100],}, //SEZO specific types 200: {'size': 2, 'name': 'battery', 'readable_name': 'Battery', 'signed': false , 'divisor': 100,}, 201: {'size': 2, 'name': 'loudness', 'readable_name': 'Loudness', 'signed': true , 'divisor': 100,}, 202: {'size': 1, 'name': 'PM1', 'readable_name': 'PM1', 'signed': false, 'divisor': 1,}, 203: {'size': 1, 'name': 'PM2_5', 'readable_name': 'PM2_5', 'signed': false, 'divisor': 1,}, 204: {'size': 1, 'name': 'PM4', 'readable_name': 'PM4', 'signed': false, 'divisor': 1,}, 205: {'size': 1, 'name': 'PM10', 'readable_name': 'PM10', 'signed': false, 'divisor': 1,}, 206: {'size': 2, 'name': 'IAQ', 'readable_name': 'IAQ', 'signed': false, 'divisor': 1,}, 207: {'size': 2, 'name': 'UV', 'readable_name': 'UV Sensor', 'signed': false, 'divisor': 1,}, 208: {'size': 2, 'name': 'EXT_temperature', 'readable_name': 'External Temperature Sensor', 'signed': true , 'divisor': 10,}, 209: {'size': 1, 'name': 'EXT_humidity', 'readable_name': 'External Humidity Sensor', 'signed': false, 'divisor': 2,}, 210: {'size': 2, 'name': 'EXT_barometer', 'readable_name': 'Barometer', 'signed': false, 'divisor': 10,}, 211: {'size': 1, 'name': 'IAQ_accuracy', 'readable_name': 'IAQ accuracy', 'signed': false, 'divisor': 1,} }; function arrayToDecimal(stream, is_signed, divisor) { var value = 0; for (var i = 0; i < stream.length; i++) { if (stream[i] > 0xFF) throw 'Byte value overflow!'; value = (value << 8) | stream[i]; } if (is_signed) { var edge = 1 << (stream.length) * 8; // 0x1000.. var max = (edge - 1) >> 1; // 0x0FFF.. >> 1 value = (value > max) ? value - edge : value; } value /= divisor; return value; } var bytes = input.bytes; var sensors = {}; var i = 0; while (i < bytes.length) { // console.log(i); // console.log(typeof bytes[i]) // console.log(bytes[i].toString()) var s_no = bytes[i++]; var s_type = bytes[i++]; if (typeof sensor_types[s_type] == 'undefined') throw 'Sensor type error!: ' + s_type; var s_size = sensor_types[s_type].size; var s_name = sensor_types[s_type].name; switch (s_type) { case 0 : // Digital Input case 1 : // Digital Output case 2 : // Analog Input case 3 : // Analog Output case 4 : // Counter input case 101: // Illuminance Sensor case 102: // Presence Sensor case 103: // Temperature Sensor case 104: // Humidity Sensor case 115: // Barometer case 134: // Gyrometer case 200: // Battery case 201: // Loudness case 202: // PM1 case 203: // PM2.5 case 204: // PM4 case 205: // PM10 case 206: // IAQ case 207: // UV radiation case 208: // External temperature case 209: // External Relative Humidity case 210: // External Pressure case 211: // External Pressure var s_value = arrayToDecimal(bytes.slice(i, i+s_size), is_signed = sensor_types[s_type].signed, divisor = sensor_types[s_type].divisor); break; case 113: // Accelerometer case 114: // Magnetometer var s_value = { 'x': arrayToDecimal(bytes.slice(i+0, i+2), is_signed=sensor_types[s_type].signed, divisor=sensor_types[s_type].divisor[0]), 'y': arrayToDecimal(bytes.slice(i+2, i+4), is_signed=sensor_types[s_type].signed, divisor=sensor_types[s_type].divisor[1]), 'z': arrayToDecimal(bytes.slice(i+4, i+6), is_signed=sensor_types[s_type].signed, divisor=sensor_types[s_type].divisor[2])}; break; case 136: // GPS Location var s_value = { 'latitude': arrayToDecimal(bytes.slice(i+0, i+3), is_signed=sensor_types[s_type].signed, divisor=sensor_types[s_type].divisor[0]), 'longitude': arrayToDecimal(bytes.slice(i+3, i+6), is_signed=sensor_types[s_type].signed, divisor=sensor_types[s_type].divisor[1]), 'altitude': arrayToDecimal(bytes.slice(i+6, i+9), is_signed=sensor_types[s_type].signed, divisor=sensor_types[s_type].divisor[2])}; break; } if (typeof(sensors[s_name]) === "undefined") { sensors[s_name] = {}; } sensors[s_name] = s_value; // sensors[s_no] = {'type': s_type, 'type_name': s_name, 'value': s_value }; i += s_size; } return {data: sensors}; } function encodeDownlink(input) { var i = colors.indexOf(input.data.led); if (i === -1) { return { errors: ['invalid LED color'], }; } return { // LoRaWAN FPort used for the downlink message fPort: 2, // Encoded bytes bytes: [i], }; } function decodeDownlink(input) { switch (input.fPort) { case 2: return { // Decoded downlink (must be symmetric with encodeDownlink) data: { led: colors[input.bytes[0]], }, }; default: return { errors: ['invalid FPort'], }; } }