TTN Smart Sensor (Sting)

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function getEAQI(pm1, pm25, pm10) { var eaqi = "NaN"; if (pm25 >= 75 || pm10 >= 150) { eaqi = "Extremely poor" } else if (pm25 >= 50 && pm25 < 75 || pm10 >= 100 && pm10 < 150) { eaqi = "Very poor" } else if (pm25 >= 25 && pm25 < 50 || pm10 >= 50 && pm10 < 100) { eaqi = "Poor" } else if (pm25 >= 20 && pm25 < 25 || pm10 >= 40 && pm10 < 50) { eaqi = "Moderate" } else if (pm25 >= 10 && pm25 < 20 || pm10 >= 20 && pm10 < 40) { eaqi = "Fair" } else if (pm25 >= 0 && pm25 < 10 || pm10 >= 0 && pm10 < 20) { eaqi = "Good" } else { eaqi = "Unknown" }; return eaqi; } function decodeUplink(input) { var bytes = input.bytes; var data = {}; var warnings = []; // firmware version 1.0 // firmware version 1.5 if (input.fPort == 1 || input.fPort == 2) { var hum = bytes[0] << 8 | bytes[1]; hum = 0.1 * hum; hum = Number(hum.toFixed(1)); var tem = bytes[2] << 24 >> 16 | bytes[3]; tem = 0.1 * tem; tem = Number(tem.toFixed(1)); var rpm = bytes[4] << 8 | bytes[5]; rpm = 0.1 * rpm; rpm = Number(rpm.toFixed(0)); var fpm = bytes[6] << 8 | bytes[7]; fpm = 0.1 * fpm; fpm = Number(fpm.toFixed(0)); if (hum > 100.0) { warnings.push("Humidity out of range (" + hum + ")"); hum = 100.0; } if (hum < 0.0 || hum > 100.0) hum = null; if (tem < -50.0 || tem > 100.0) tem = null; if (rpm < 0 || rpm > 5000) rpm = null; if (fpm < 0 || fpm > 5000) fpm = null; data.Humidity = hum; data.Temperature = tem; data.FPM = fpm; data.RPM = rpm; data.EAQI = getEAQI(null, fpm, rpm); data.Version = "1.0"; } // firmware version 1.5 if (input.fPort == 2) { var pre = bytes[8] << 8 | bytes[9]; pre = Number(pre.toFixed(0)); var co = bytes[10] << 8 | bytes[11]; co = 1.0 * co; co = Number(co.toFixed(0)); var nh3 = bytes[12] << 8 | bytes[13]; nh3 = 1.0 * nh3; nh3 = Number(nh3.toFixed(0)); var no2 = bytes[14] << 8 | bytes[15]; no2 = 0.01 * no2; no2 = Number(no2.toFixed(2)); var noise = bytes[16] << 8 | bytes[17]; noise = 0.01 * noise; noise = Number(noise.toFixed(2)); if (pre < 0.0 || pre > 1000000.0) pre = null; if (co < 0.0 || co > 10000) co = null; if (nh3 < 0.0 || nh3 > 10000) nh3 = null; if (no2 < 0.0 || no2 > 10000) no2 = null; data.Pressure = pre; data.CO = co; data.NH3 = nh3; data.NO2 = no2; data.Noise = noise; data.Version = "1.5"; } // firmware version 2.0 if (input.fPort == 3) { var hum = bytes[0] << 8 | bytes[1]; hum = 0.1 * hum; hum = Number(hum.toFixed(1)); var tem = bytes[2] << 24 >> 16 | bytes[3]; tem = 0.1 * tem; tem = Number(tem.toFixed(1)); var pre = bytes[4] << 8 | bytes[5]; pre = Number(pre.toFixed(0)); var pm1 = bytes[6] << 8 | bytes[7]; pm1 = 0.1 * pm1; pm1 = Number(pm1.toFixed(0)); var pm25 = bytes[8] << 8 | bytes[9]; pm25 = 0.1 * pm25; pm25 = Number(pm25.toFixed(0)); var pm10 = bytes[10] << 8 | bytes[11]; pm10 = 0.1 * pm10; pm10 = Number(pm10.toFixed(0)); var noise = bytes[12] << 8 | bytes[13]; noise = 0.01 * noise; noise = Number(noise.toFixed(2)); if (hum > 100.0) hum = 100.0; if (hum < 0.0 || hum > 100.0) hum = null; if (tem < -50.0 || tem > 100.0) tem = null; if (pre < 0.0 || pre > 1000000.0) pre = null; if (pm1 < 0 || pm1 > 5000) pm1 = null; if (pm25 < 0 || pm25 > 5000) pm25 = null; if (pm10 < 0 || pm10 > 5000) pm10 = null; data.Humidity = hum; data.Temperature = tem; data.Pressure = pre; data.UPM = pm1; data.FPM = pm25; data.RPM = pm10; data.Noise = noise; data.EAQI = getEAQI(pm1, pm25, pm10); data.Version = "2.0"; } return { data: data, warnings: warnings }; }