TTN Smart Sensor (Example)

Codec Preview

var directions = ['N', 'E', 'S', 'W']; var colors = ['red', 'green']; var degrees = { N: 0, E: 90, S: 180, W: 270, }; function decodeUplink(input) { switch (input.fPort) { case 1: return { // Decoded data data: { direction: directions[input.bytes[0]], speed: input.bytes[1], }, }; default: return { errors: ['unknown FPort'], }; } } function normalizeUplink(input) { return { // Normalized data data: { wind: { direction: degrees[input.data.direction], // letter to degrees speed: input.data.speed * 0.5144, // knots to m/s }, }, }; } 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'], }; } }