I have to create a Decoder(uplink)/Encoder(downlink) for a RakWireless RAK10701-P Field Tester. I did a customization in the original Rakwireless script: RAK10701-P Field Tester Pro for LoRaWAN Quick Start Guide | RAKwireless Documentation Center
I already tested a lot of options but I can´t see the JS decoder running in the Live Inspector and without error messages.
Could you help me? My version script is here:
function distance(lat1, lon1, lat2, lon2) {
if ((lat1 == lat2) && (lon1 == lon2)) {
return 0;
}
else {
var radlat1 = Math.PI * lat1 / 180;
var radlat2 = Math.PI * lat2 / 180;
var theta = lon1 - lon2;
var radtheta = Math.PI * theta / 180;
var dist = Math.sin(radlat1) * Math.sin(radlat2) + Math.cos(radlat1) * Math.cos(radlat2) * Math.cos(radtheta);
if (dist > 1) {
dist = 1;
}
dist = Math.acos(dist);
dist = dist * 180 / Math.PI;
dist = dist * 60 * 1.1515;
dist = dist * 1.609344;
context.log = ("distancia = " + dist);
return dist;
}
}
function Decoder(payload, fPort) {
try {
console.log = ("começou o try")
var decoded = {};
// avoid sending Downlink ACK to integration (Cargo)
if ((fPort === 1) || (fPort === 2)) {
var lonSign = (payload[0] >> 7) & 0x01 ? -1 : 1;
var latSign = (payload[0] >> 6) & 0x01 ? -1 : 1;
var encLat = ((payload[0] & 0x3f) << 17) + (payload[1] << 9) + (payload[2] << 1) + (payload[3] >> 7);
var encLon = ((payload[3] & 0x7f) << 16) + (payload[4] << 8) + payload[5];
var maxHdop = 2;
var minSats = 5;
if ((hdop < maxHdop) && (sats >= minSats)) {
// Send only acceptable quality of position to mappers
} else {
decoded.error = "Need more GPS precision (hdop must be <" + maxHdop +
" & sats must be >= " + minSats + ") current hdop: " + hdop + " & sats:" + sats;
}
// latitude
const latitude = {
variable: 'latitude',
value: latSign * (encLat * 108 + 53) / 10000000,
unit: '°'
};
decoded.latitude = latitude;
// longitude
const longitude = {
variable: 'longitude',
value: lonSign * (encLon * 215 + 107) / 10000000,
unit: '°'
};
decoded.longitude = longitude;
// altitude
const altitude = {
variable: 'altitude',
value: ((payload[6] << 8) + payload[7]) - 1000,
unit: 'm'
};
decoded.altitude = altitude;
// HDOP: Diluição da Precisão Horizontal
// VDOP: Diluição da Precisão Vertical
// PDOP: Diluição da Precisão de Posição (3D). Geralmente VDOP e HDOP foram substituidas pelo PDOP que já dá a precisão das duas anteriores na mesma variável.
// TDOP: Diluição da Precisão Temporal
// GDOP: Diluição da Precisão Geométrica. Basicamente a combinação de todos acima. GDOP=RaizQuadrada(PDOP^2 + TDOP^2)
const hdop = {
variable: 'hdop',
value: payload[8] / 10,
unit: ''
};
decoded.hdop = hdop;
// accuracy
const accuracy = {
variable: 'accuracy',
value: (hdop * 5 + 5) / 10,
unit: '%'
};
decoded.accuracy = accuracy;
// Satellites
const sats = {
variable: 'sats',
value: payload[9],
unit: ''
};
decoded.sats = sats;
// Location = Latitude and Longitude
const location = {
variable: 'location',
value: "(" + decoded.latitude + "," + decoded.longitude + ")",
unit: ''
};
decoded.location = location
context.log = ("location = " + decoded.location);
// decoded.raw = rawPayload.uplink_message.rx_metadata[0].location;
// Gateways Quantity
const num_gw = {
variable: 'nw_gw',
value: normalizedPayload.gateways.length,
unit: ''
};
decoded.num_gw = num_gw;
// Received Signal Strength Idication - RSSI
var server_type = 0;
// Check if payload comes from TTN
if (typeof (rawPayload.uplink_message) != "undefined") {
console.log("Found TTN format");
server_type = 1;
}
else {
console.log("Unknown raw format");
}
var gw_lat = {};
var gw_long = {};
decoded.num_gw = 0;
for (idx_tst = 0; idx_tst < 10; idx_tst++)
{
if (typeof (normalizedPayload.gateways[idx_tst]) != "undefined")
{
console.log("Found gateway with IDX " + idx_tst);
decoded.num_gw += 1;
}
}
decoded.minRSSI = 0;
decoded.maxRSSI = 0;
decoded.minSNR = 0;
decoded.maxSNR = 0;
for (idx = 0; idx < decoded.num_gw; idx++) {
var new_rssi = (!!normalizedPayload.gateways && !!normalizedPayload.gateways[idx] && normalizedPayload.gateways[idx].rssi) || 0;
var new_snr = (!!normalizedPayload.gateways && !!normalizedPayload.gateways[idx] && normalizedPayload.gateways[idx].snr) || 0;
if ((new_rssi < decoded.minRSSI) || (decoded.minRSSI == 0)) {
decoded.minRSSI = new_rssi;
}
if ((new_rssi > decoded.maxRSSI) || (decoded.maxRSSI == 0)) {
decoded.maxRSSI = new_rssi;
}
if ((new_snr < decoded.minSNR) || (decoded.minSNR == 0)) {
decoded.minSNR = new_snr;
}
if ((new_snr > decoded.maxSNR) || (decoded.maxSNR == 0)) {
decoded.maxSNR = new_snr;
}
// var gw_lat = 0.0;
// var gw_long = 0.0;
switch (server_type) {
//TTN
case 1:
gw_lat[idx] = rawPayload.uplink_message.rx_metadata[idx].location.latitude;
gw_long[idx] = rawPayload.uplink_message.rx_metadata[idx].location.longitude;
break;
default:
console.log("Unknown LNS");
break;
}
console.log("IDX " + idx + " lat " + gw_lat[idx] + " long " + gw_long[idx]);
// decoded.gw_lat[idx] = gw_lat;
// decoded.gw_long[idx] = gw_long;
// Calculate distance
decoded.minDistance = 0;
decoded.maxDistance = 0;
var new_distance = distance(gw_lat[idx], gw_long[idx], decoded.latitude, decoded.longitude);
if ((new_distance < decoded.minDistance) || (decoded.minDistance == 0)) {
decoded.minDistance = new_distance * 1000;
}
if ((new_distance > decoded.maxDistance) || (decoded.maxDistance == 0)) {
decoded.maxDistance = new_distance * 1000;
}
}
switch (decoded.num_gw) {
case 20:
decoded.hotspot_10 = "(" + gw_lat[19] + "," + gw_long[19] + ")";
case 19:
decoded.hotspot_09 = "(" + gw_lat[18] + "," + gw_long[18] + ")";
case 18:
decoded.hotspot_08 = "(" + gw_lat[17] + "," + gw_long[17] + ")";
case 17:
decoded.hotspot_07 = "(" + gw_lat[16] + "," + gw_long[16] + ")";
case 16:
decoded.hotspot_06 = "(" + gw_lat[15] + "," + gw_long[15] + ")";
case 15:
decoded.hotspot_05 = "(" + gw_lat[14] + "," + gw_long[14] + ")";
case 14:
decoded.hotspot_04 = "(" + gw_lat[13] + "," + gw_long[13] + ")";
case 13:
decoded.hotspot_03 = "(" + gw_lat[12] + "," + gw_long[12] + ")";
case 12:
decoded.hotspot_02 = "(" + gw_lat[11] + "," + gw_long[11] + ")";
case 11:
decoded.hotspot_01 = "(" + gw_lat[10] + "," + gw_long[10] + ")";
case 10:
decoded.hotspot_10 = "(" + gw_lat[9] + "," + gw_long[9] + ")";
case 9:
decoded.hotspot_09 = "(" + gw_lat[8] + "," + gw_long[8] + ")";
case 8:
decoded.hotspot_08 = "(" + gw_lat[7] + "," + gw_long[7] + ")";
case 7:
decoded.hotspot_07 = "(" + gw_lat[6] + "," + gw_long[6] + ")";
case 6:
decoded.hotspot_06 = "(" + gw_lat[5] + "," + gw_long[5] + ")";
case 5:
decoded.hotspot_05 = "(" + gw_lat[4] + "," + gw_long[4] + ")";
case 4:
decoded.hotspot_04 = "(" + gw_lat[3] + "," + gw_long[3] + ")";
case 3:
decoded.hotspot_03 = "(" + gw_lat[2] + "," + gw_long[2] + ")";
case 2:
decoded.hotspot_02 = "(" + gw_lat[1] + "," + gw_long[1] + ")";
case 1:
decoded.hotspot_01 = "(" + gw_lat[0] + "," + gw_long[0] + ")";
default:
break;
}
decoded.maxMod = parseInt((decoded.maxDistance / 250), 10);
decoded.minMod = parseInt((decoded.minDistance / 250), 10);
decoded.maxDistance = parseInt((decoded.maxMod * 250), 10);
decoded.minDistance = parseInt((decoded.minMod * 250), 10);
if (decoded.maxDistance <= 1) {
decoded.maxDistance = parseInt(250, 10);
}
if (decoded.minDistance <= 1) {
decoded.minDistance = parseInt(250, 10);
}
console.log = ("termino normal = " + decoded);
return decoded;
}
console.log = ("terminou o try");
} catch (error) {
console.log = ("termino com erro");
console.error("codigo de erro = " + error);
} finally {
console.log ("terminou sem erros")
}
return null;
}
