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chirpstack_DO200.js
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chirpstack_DO200.js
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// Version 1.2, Date:20220817
// Decode an uplink message from a buffer
// payload - array of bytes
// metadata - key/value object
//Below payload is buffer from Chirpstack http integration to other app like thingsboard.User should use the real content to replace below OR remove below two lines.
let payload = [123, 10, 32, 32, 32, 32, 34, 100, 101, 100, 117, 112, 108, 105, 99, 97, 116, 105, 111, 110, 73, 100, 34, 58, 32, 34, 101, 48, 101, 102, 54, 98, 101, 97, 45, 100, 49, 51, 97, 45, 52, 97, 53, 101, 45, 56, 51, 57, 52, 45, 100, 54, 55, 57, 56, 49, 102, 52, 101, 100, 52, 101, 34, 44, 10, 32, 32, 32, 32, 34, 116, 105, 109, 101, 34, 58, 32, 34, 50, 48, 50, 50, 45, 49, 48, 45, 48, 51, 84, 48, 51, 58, 49, 55, 58, 49, 48, 46, 52, 50, 55, 52, 51, 48, 49, 50, 48, 43, 48, 48, 58, 48, 48, 34, 44, 10, 32, 32, 32, 32, 34, 100, 101, 118, 105, 99, 101, 73, 110, 102, 111, 34, 58, 32, 123, 10, 32, 32, 32, 32, 32, 32, 32, 32, 34, 116, 101, 110, 97, 110, 116, 73, 100, 34, 58, 32, 34, 49, 50, 100, 98, 57, 102, 100, 101, 45, 55, 48, 98, 48, 45, 52, 48, 101, 101, 45, 98, 54, 53, 52, 45, 101, 48, 97, 99, 49, 56, 48, 98, 102, 55, 99, 48, 34, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 34, 116, 101, 110, 97, 110, 116, 78, 97, 109, 101, 34, 58, 32, 34, 68, 105, 110, 103, 116, 101, 107, 34, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 34, 97, 112, 112, 108, 105, 99, 97, 116, 105, 111, 110, 73, 100, 34, 58, 32, 34, 49, 101, 98, 100, 99, 53, 98, 55, 45, 100, 52, 51, 100, 45, 52, 54, 101, 48, 45, 57, 97, 52, 101, 45, 98, 100, 53, 48, 97, 100, 50, 100, 56, 54, 100, 50, 34, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 34, 97, 112, 112, 108, 105, 99, 97, 116, 105, 111, 110, 78, 97, 109, 101, 34, 58, 32, 34, 68, 67, 54, 48, 48, 34, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 34, 100, 101, 118, 105, 99, 101, 80, 114, 111, 102, 105, 108, 101, 73, 100, 34, 58, 32, 34, 101, 100, 54, 54, 54, 56, 48, 57, 45, 56, 57, 101, 48, 45, 52, 48, 54, 99, 45, 56, 102, 51, 102, 45, 99, 98, 99, 99, 57, 101, 48, 51, 54, 102, 101, 50, 34, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 34, 100, 101, 118, 105, 99, 101, 80, 114, 111, 102, 105, 108, 101, 78, 97, 109, 101, 34, 58, 32, 34, 69, 85, 56, 54, 56, 34, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 34, 100, 101, 118, 105, 99, 101, 78, 97, 109, 101, 34, 58, 32, 34, 55, 67, 45, 70, 57, 45, 53, 55, 45, 50, 48, 45, 70, 67, 45, 48, 49, 45, 53, 70, 45, 69, 70, 34, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 34, 100, 101, 118, 69, 117, 105, 34, 58, 32, 34, 55, 99, 102, 57, 53, 55, 50, 48, 102, 99, 48, 49, 53, 102, 101, 102, 34, 10, 32, 32, 32, 32, 125, 44, 10, 32, 32, 32, 32, 34, 100, 101, 118, 65, 100, 100, 114, 34, 58, 32, 34, 48, 48, 100, 57, 56, 56, 98, 51, 34, 44, 10, 32, 32, 32, 32, 34, 97, 100, 114, 34, 58, 32, 116, 114, 117, 101, 44, 10, 32, 32, 32, 32, 34, 100, 114, 34, 58, 32, 53, 44, 10, 32, 32, 32, 32, 34, 102, 67, 110, 116, 34, 58, 32, 50, 44, 10, 32, 32, 32, 32, 34, 102, 80, 111, 114, 116, 34, 58, 32, 49, 48, 44, 10, 32, 32, 32, 32, 34, 99, 111, 110, 102, 105, 114, 109, 101, 100, 34, 58, 32, 116, 114, 117, 101, 44, 10, 32, 32, 32, 32, 34, 100, 97, 116, 97, 34, 58, 32, 34, 103, 65, 65, 86, 65, 82, 85, 65, 65, 65, 65, 65, 65, 87, 56, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 81, 67, 66, 34, 44, 10, 32, 32, 32, 32, 34, 114, 120, 73, 110, 102, 111, 34, 58, 32, 91, 123, 10, 32, 32, 32, 32, 32, 32, 32, 32, 34, 103, 97, 116, 101, 119, 97, 121, 73, 100, 34, 58, 32, 34, 48, 48, 48, 48, 49, 99, 52, 57, 55, 98, 99, 98, 49, 56, 101, 56, 34, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 34, 117, 112, 108, 105, 110, 107, 73, 100, 34, 58, 32, 52, 56, 51, 49, 53, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 34, 114, 115, 115, 105, 34, 58, 32, 45, 55, 52, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 34, 115, 110, 114, 34, 58, 32, 57, 46, 56, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 34, 99, 104, 97, 110, 110, 101, 108, 34, 58, 32, 53, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 34, 114, 102, 67, 104, 97, 105, 110, 34, 58, 32, 49, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 34, 108, 111, 99, 97, 116, 105, 111, 110, 34, 58, 32, 123, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 34, 108, 97, 116, 105, 116, 117, 100, 101, 34, 58, 32, 52, 48, 46, 48, 51, 56, 48, 49, 49, 49, 48, 55, 51, 55, 53, 49, 50, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 34, 108, 111, 110, 103, 105, 116, 117, 100, 101, 34, 58, 32, 49, 49, 54, 46, 53, 48, 55, 57, 51, 50, 52, 54, 53, 56, 55, 48, 49, 49, 10, 32, 32, 32, 32, 32, 32, 32, 32, 125, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 34, 99, 111, 110, 116, 101, 120, 116, 34, 58, 32, 34, 88, 108, 104, 51, 84, 65, 61, 61, 34, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 34, 109, 101, 116, 97, 100, 97, 116, 97, 34, 58, 32, 123, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 34, 114, 101, 103, 105, 111, 110, 95, 110, 97, 109, 101, 34, 58, 32, 34, 101, 117, 56, 54, 56, 34, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 34, 114, 101, 103, 105, 111, 110, 95, 99, 111, 109, 109, 111, 110, 95, 110, 97, 109, 101, 34, 58, 32, 34, 69, 85, 56, 54, 56, 34, 10, 32, 32, 32, 32, 32, 32, 32, 32, 125, 10, 32, 32, 32, 32, 125, 93, 44, 10, 32, 32, 32, 32, 34, 116, 120, 73, 110, 102, 111, 34, 58, 32, 123, 10, 32, 32, 32, 32, 32, 32, 32, 32, 34, 102, 114, 101, 113, 117, 101, 110, 99, 121, 34, 58, 32, 56, 54, 56, 49, 48, 48, 48, 48, 48, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 34, 109, 111, 100, 117, 108, 97, 116, 105, 111, 110, 34, 58, 32, 123, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 34, 108, 111, 114, 97, 34, 58, 32, 123, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 34, 98, 97, 110, 100, 119, 105, 100, 116, 104, 34, 58, 32, 49, 50, 53, 48, 48, 48, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 34, 115, 112, 114, 101, 97, 100, 105, 110, 103, 70, 97, 99, 116, 111, 114, 34, 58, 32, 55, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 34, 99, 111, 100, 101, 82, 97, 116, 101, 34, 58, 32, 34, 67, 82, 95, 52, 95, 53, 34, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 125, 10, 32, 32, 32, 32, 32, 32, 32, 32, 125, 10, 32, 32, 32, 32, 125, 10, 125];
let metadata = { "Integration Name": "Dingtek Chirpstack Integration" };
// Decode an uplink message from a buffer
// payload - array of bytes
// metadata - key/value object
//return payload;
// Decode an uplink message from a buffer
// payload - array of bytes
// metadata - key/value object
//return payload;
/** Decoder **/
// decode payload to string
//var payloadStr = decodeToString(payload);
var payloadJson = decodeToJson(payload);
//return payloadJson;
var in_data = payloadJson;
// decode payload to JSON
var device_info = payloadJson.deviceInfo;
//var data = device_info;
//var deviceName = device_info.deviceName.replace(/-/g, "");
var deviceLabel = device_info.deviceName.replace(/-/g, "")
.toUpperCase();
var deviceName = device_info.devEui.toUpperCase();
var deviceType = device_info.applicationName;
var customerName = device_info.tenantName;
var deviceWireless = "LoRaWAN";
//validate length
if (payloadJson.data == null) return NaN;
switch (deviceType) {
case "DO200":
result = Parse_Code_DO200(payloadJson, metadata);
break;
default:
result = Parse_Code_Other(payloadJson, metadata);
break;
}
return result;
//For parking sensor DO200
function Parse_Code_DO200(payload_in, metadata_in) {
// decode payload to JSON
var device_info = payload_in.deviceInfo;
//var deviceType = "default";
var incomingHexData = base64ToHex(payload_in.data);
if (
incomingHexData.length != 42 ||
incomingHexData.substring(0, 6) != "800002" ||
incomingHexData.substring(
incomingHexData.length - 2,
incomingHexData.length
) != "81"
) {
return 0;
}
if (
incomingHexData.length == 42 &&
incomingHexData.substring(8, 10) == "15"
) {
//return in_data.txInfo;
var mag_x = parseInt(incomingHexData.substring(22,
26), 16);
var mag_y = parseInt(incomingHexData.substring(26,
30), 16);
var mag_z = parseInt(incomingHexData.substring(30,
34), 16);
var result = {
deviceName: deviceName,
deviceType: deviceType,
deviceLabel: deviceLabel,
customerName: customerName,
attributes: {
devAddr: payload_in.devAddr,
devEui: payload_in.deviceInfo.devEui,
rssi: payload_in.rxInfo[0].rssi,
snr: payload_in.rxInfo[0].snr,
gatewayId: payload_in.rxInfo[0]
.gatewayId.toUpperCase(),
gatewayLong: payload_in.rxInfo[0]
.location.longitude,
gatewayLat: payload_in.rxInfo[0]
.location.latitude,
band: payload_in.rxInfo[0].metadata
.region_name.toUpperCase(),
wireless: "LoRaWAN",
},
telemetry: {
level: parseInt(incomingHexData
.substring(10, 14), 16),
volt: parseInt(incomingHexData
.substring(18, 22), 16),
alarmPark: parseInt(incomingHexData
.substring(14, 15), 16) == 1 ?
true : false,
alarmLevel: parseInt(incomingHexData
.substring(15, 16), 16) == 1 ?
true : false,
alarmMagnet: parseInt(incomingHexData
.substring(16, 17), 16) == 1 ?
true : false,
alarmBattery: parseInt(incomingHexData
.substring(17, 18), 16) == 1 ?
true : false,
xMagnet: mag_x > 32767 ? mag_x - 65536 :
mag_x,
yMagnet: mag_y > 32767 ? mag_y - 65536 :
mag_y,
zMagnet: mag_z > 32767 ? mag_z - 65536 :
mag_z,
Frame_Counter: parseInt(incomingHexData
.substring(34, 38), 16),
},
};
//console.log(result);
return result;
} else return NaN;
}
//For other products
function Parse_Code_Other(payload_in, metadata_in) {
return null;
}
/** protocol decode function**/
/**string to IEEE754 float**/
function str2IEEE754(in_data) {
if (in_data.length != 8) return NaN;
var buffer = new ArrayBuffer(4);
var bytes = new Uint8Array(buffer);
bytes[0] = parseInt(in_data.substring(6, 8), 16);
bytes[1] = parseInt(in_data.substring(4, 6), 16);
bytes[2] = parseInt(in_data.substring(2, 4), 16);
bytes[3] = parseInt(in_data.substring(0, 2), 16);
var view = new DataView(buffer);
var out_data = view.getFloat32(0, false);
return out_data;
}
/** Helper functions **/
function decodeToString(payload) {
return String.fromCharCode.apply(String, payload);
}
function decodeToJson(payload) {
// covert payload to string.
var str = decodeToString(payload);
// parse string to JSON
var data = JSON.parse(str);
return data;
}
function base64ToHex(str) {
var raw = atob(str);
var res = "";
for (var i = 0; i < raw.length; i++) {
var hex = raw.charCodeAt(i).toString(16);
res += hex.length === 2 ? hex : "0" + hex;
}
return res.toUpperCase();
}
/* Converts hex string to byte array*/
function hexStringToByteArray(str) {
if (!str) {
return new Uint8Array();
}
var a = [];
for (var i = 0, len = str.length; i < len; i += 2) {
a.push(parseInt(str.substr(i, 2), 16));
}
return new Uint8Array(a);
}