started adding dragino devices

vendors/dragino/codecs/ldds75.js

@@ -0,0 +1,31 @@
+function decodeUplink(input) {
+  let decoded = {};
+  let len = input.bytes.length;
+  let value = (input.bytes[0]<<8 | input.bytes[1]) & 0x3FFF;
+
+  switch (input.fPort) {
+    case 2:
+      decoded.Bat=value/1000;
+      value=input.bytes[2]<<8 | input.bytes[3];
+      decoded.Distance=(value); //+" mm"; distance in mm
+
+      if(value === 0)
+        decoded.Distance = "No Sensor";
+      else if (value === 20)
+        decoded.Distance = "Invalid Reading";
+        decoded.Interrupt_flag = input.bytes[4]; 
+
+      value = input.bytes[5]<<8 | input.bytes[6];
+      if (input.bytes[5] & 0x80)
+        {value |= 0xFFFF0000;}
+        decoded.TempC_DS18B20=(value/10).toFixed(2); //DS18B20,temperature  
+        decoded.Sensor_flag = input.bytes[7];
+
+  return {data: decoded};
+
+  default:
+    return {
+      errors: ["unknown FPort"]
+    }
+  }
+}

vendors/dragino/codecs/lds02.js

@@ -0,0 +1,66 @@
+function decodeUplink(input) {
+  return { 
+    data: Decode(input.fPort, input.bytes, input.variables)
+  };   
+}
+
+function Decode(fPort, bytes, variables) {
+  // Decode an uplink message from a buffer
+  // (array) of bytes to an object of fields.
+  var value=(bytes[0]<<8 | bytes[1])&0x3FFF;
+  var bat=value/1000;//Battery,units:V
+
+  var door_open_status=bytes[0]&0x80?1:0;//1:open,0:close
+  var water_leak_status=bytes[0]&0x40?1:0;
+
+  var mod=bytes[2];
+  var alarm=bytes[9]&0x01;
+
+  if(mod==1){
+    var open_times=bytes[3]<<16 | bytes[4]<<8 | bytes[5];
+    var open_duration=bytes[6]<<16 | bytes[7]<<8 | bytes[8];//units:min
+    if(bytes.length==10 &&  0x07>bytes[0]< 0x0f)
+    return {
+      Node_type:"LDS02",
+	  BAT_V:bat,
+      MOD:mod,
+      DOOR_OPEN_STATUS:door_open_status,
+      DOOR_OPEN_TIMES:open_times,
+      LAST_DOOR_OPEN_DURATION:open_duration,
+      ALARM:alarm
+    };
+  }
+  else if(mod==2)
+  {
+  var leak_times=bytes[3]<<16 | bytes[4]<<8 | bytes[5];
+  var leak_duration=bytes[6]<<16 | bytes[7]<<8 | bytes[8];//units:min
+  if(bytes.length==10 &&  0x07>bytes[0]< 0x0f)
+  return {
+      Node_type:"LWL02",
+      BAT_V:bat,
+      MOD:mod,
+      WATER_LEAK_STATUS:water_leak_status,
+      WATER_LEAK_TIMES:leak_times,
+      LAST_WATER_LEAK_DURATION:leak_duration
+  };
+  }
+  else if(mod==3)
+  if(bytes.length==10 &&  0x07>bytes[0]< 0x0f)
+  {
+  return {
+      Node_type:"LWL02",
+	  BAT_V:bat,
+      MOD:mod,
+      DOOR_OPEN_STATUS:door_open_status,
+      WATER_LEAK_STATUS:water_leak_status,
+      ALARM:alarm
+  };
+  }
+  else{
+  return {
+      Node_type:"LWL02",
+	  BAT_V:bat,
+      MOD:mod,
+  };
+  }
+}