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Codec/Dragino-RS485-BL-7in1-Soil-Sensor.txt

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+// Dragino RS485-BL with 7-in-1 Soil sensor
+// https://epcb.vn/products/cam-bien-dat-7-trong-1-es-soil-7-in-1-rs485-modbus-rtu
+// Decode uplink function.
+//
+// Input is an object with the following fields:
+// - bytes = Byte array containing the uplink payload, e.g. [255, 230, 255, 0]
+// - fPort = Uplink fPort.
+// - variables = Object containing the configured device variables.
+//
+// Output must be an object with the following fields:
+// - data = Object representing the decoded payload.
+function decodeUplink(input) {
+  var bytes = input.bytes;
+
+  // Only accept fPort=2. Ignore fPort=4
+  if(input.fPort != 2) {
+    return {"data": {}};
+  }
+  
+  var BatV = (bytes[0] << 8 | bytes[1]) / 1000 + 0.277;
+  var PayVER = bytes[2];
+  // If AT+DATAUP=1, PayloadCount=1 byte, payload#=1 byte
+  var Soil_pH = +((bytes[3] << 8 | bytes[4]) / 100).toFixed(2);
+  var Soil_Humid = +((bytes[5] << 8 | bytes[6]) / 10).toFixed(2); // % 
+  var Soil_Temp = +((bytes[7] << 8 | bytes[8]) / 10).toFixed(2); // *C
+  var Soil_EC = bytes[9] << 8 | bytes[10]; // uS/cm
+  
+  var Soil_N = bytes[11] << 8 | bytes[12]; // mg/kg
+  var Soil_P = bytes[13] << 8 | bytes[14]; // mg/kg
+  var Soil_K = bytes[15] << 8 | bytes[16]; // mg/kg
+   
+  
+  return {"data": {"BatV":BatV, "PayVER":PayVER, "Soil_pH":Soil_pH, "Soil_Humid":Soil_Humid,
+                  "Soil_Temp":Soil_Temp, "Soil_EC":Soil_EC, "Soil_N":Soil_N, "Soil_P":Soil_P,
+                  "Soil_K":Soil_K}};
+}
+
+// Encode downlink function.
+//
+// Input is an object with the following fields:
+// - data = Object representing the payload that must be encoded.
+// - variables = Object containing the configured device variables.
+//
+// Output must be an object with the following fields:
+// - bytes = Byte array containing the downlink payload.
+function encodeDownlink(input) {
+  return {bytes: []};
+}