AM103 decoder

decoders/connector/milesight/am103/connector.jsonc

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+{
+  "$schema": "../../../../schema/connector.json",
+  "name": "Milesight AM103",
+  "images": {
+    "logo": "./assets/logo.png"
+  },
+  "versions": {
+    "v1.0.0": {
+      "src": "./v1.0.0/payload.js",
+      "manifest": "./v1.0.0/payload-config.jsonc"
+    }
+  }
+}

decoders/connector/milesight/am103/description.md

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+The AM103 is a sensor for indoor ambience monitoring over LoRaWAN® 

decoders/connector/milesight/am103/v1.0.0/payload-config.jsonc

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+{
+  "$schema": "../../../../../schema/connector_details.json",
+  "description": "../description.md",
+  "install_text": "AM103 is a compact indoor ambience monitoring sensor for measurement of temperature, humidity, light, CO2 concentration. Apart from screen display, sensor data is also transmitted using LoRaWAN® technology.\n\n** Features**\n\n* Integrated with multiple sensors like humidity, temperature, CO2, etc.\n* Visual display via E-ink screen \n* Standard AA batteries\n* One year work without replacing batteries\n* Equipped with NFC and type-C port for easy configuration\n* Compliant with standard LoRaWAN®gateways and network servers",
+  "install_end_text": "",
+  "device_annotation": "",
+  "device_parameters": [],
+  "networks": [
+    "../../../../network/lorawan-actility/v1.0.0/payload.js",
+    "../../../../network/lorawan-chirpstack/v1.0.0/payload.js",
+    "../../../../network/lorawan-citykinect/v1.0.0/payload.js",
+    "../../../../network/lorawan-everynet/v1.0.0/payload.js",
+    "../../../../network/lorawan-helium/v1.0.0/payload.js",
+    "../../../../network/lorawan-kerlink/v1.0.0/payload.js",
+    "../../../../network/lorawan-loriot/v1.0.0/payload.js",
+    "../../../../network/lorawan-machineq/v1.0.0/payload.js",
+    "../../../../network/lorawan-orbiwise/v1.0.0/payload.js",
+    "../../../../network/lorawan-senet/v1.0.0/payload.js",
+    "../../../../network/lorawan-senra/v1.0.0/payload.js",
+    "../../../../network/lorawan-swisscom/v1.0.0/payload.js",
+    "../../../../network/lorawan-tektelic/v1.0.0/payload.js",
+    "../../../../network/lorawan-ttittn-v3/v1.0.0/payload.js",
+    "../../../../network/lorawan-brdot/v1.0.0/payload.js"
+  ]
+}

decoders/connector/milesight/am103/v1.0.0/payload.js

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+/**
+ * Milesight AM103 Payload Decoder
+ *
+ */
+
+
+/* ******************************************
+ * bytes to number
+ ********************************************/
+function readUInt16LE(bytes) {
+  var value = (bytes[1] << 8) + bytes[0];
+  return value & 0xffff;
+}
+
+function readInt16LE(bytes) {
+  var ref = readUInt16LE(bytes);
+  return ref > 0x7fff ? ref - 0x10000 : ref;
+}
+
+function readUInt32LE(bytes) {
+  var value = (bytes[3] << 24) + (bytes[2] << 16) + (bytes[1] << 8) + bytes[0];
+  return (value & 0xffffffff) >>> 0;
+}
+
+// function readInt32LE(bytes) {
+//   var ref = readUInt32LE(bytes);
+//   return ref > 0x7fffffff ? ref - 0x100000000 : ref;
+// }
+
+
+function Decoder(bytes) {
+    var decoded = {};
+
+  for (var i = 0; i < bytes.length; ) {
+      var channel_id = bytes[i++];
+      var channel_type = bytes[i++];
+      // BATTERY
+      if (channel_id === 0x01 && channel_type === 0x75) {
+          decoded.battery = bytes[i];
+          i += 1;
+      }
+      // TEMPERATURE
+      else if (channel_id === 0x03 && channel_type === 0x67) {
+          // ℃
+          decoded.temperature = readInt16LE(bytes.slice(i, i + 2)) / 10;
+          i += 2;
+
+          // ℉
+          // decoded.temperature = readInt16LE(bytes.slice(i, i + 2)) / 10 * 1.8 + 32;
+          // i +=2;
+      }
+      // HUMIDITY
+      else if (channel_id === 0x04 && channel_type === 0x68) {
+          decoded.humidity = bytes[i] / 2;
+          i += 1;
+      }
+      // CO2
+      else if (channel_id === 0x07 && channel_type === 0x7d) {
+          decoded.co2 = readUInt16LE(bytes.slice(i, i + 2));
+          i += 2;
+      }
+      // HISTORY DATA
+      else if (channel_id === 0x20 && channel_type === 0xce) {
+          var data = {};
+          data.timestamp = readUInt32LE(bytes.slice(i, i + 4));
+          data.temperature = readInt16LE(bytes.slice(i + 4, i + 6)) / 10;
+          data.humidity = bytes[i + 6] / 2;
+          data.co2 = readUInt16LE(bytes.slice(i + 7, i + 9));
+          i += 9;
+
+          decoded.history = decoded.history || [];
+          decoded.history.push(data);
+      } else {
+          break;
+      }
+  }
+
+  return decoded;
+
+}
+
+// let payload = [{ variable: "payload", value: "0175640367180104686D077DC501" }];
+
+const data = payload.find((x) => x.variable === "payload_raw" || x.variable === "payload" || x.variable === "data");
+if (data) {
+  const buffer = Buffer.from(data.value, "hex");
+  const serie = new Date().getTime();
+  payload = payload.concat(Decoder(buffer)).map((x) => ({ ...x, serie }));
+}
+
+// console.log(payload);
+