Dragino parser

src/udi/handlers/ttn/models/draginoLmds200/draginoLmds200.go

@@ -0,0 +1,59 @@
+package draginoLmds200
+
+import (
+  "fmt"
+  "encoding/json"
+  "udi/database"
+)
+
+/*
+    "decoded_payload": {
+      "Bat": 3.082,
+      "DALARM_count": 0,
+      "Distance_alarm": 0,
+      "Interrupt_alarm": 0,
+      "dis1": 105,
+      "dis2": 201
+    },
+*/
+type message struct {
+  Bat float32 `json:"Bat"`
+  DALARM_count int `json:"DALARM_count"`
+  Distance_alarm int `json:"Distance_alarm"`
+  Interrupt_alarm int `json:"Interrupt_alarm"`
+  Dis1 int `json:"dis1"`
+  Dis2 int `json:"dis2"`
+}
+
+func Parse(fPort int, decodedPayload []byte, variables *map[string]database.VariableType) error {
+  if fPort != 2 {
+    return fmt.Errorf("Unexpected fPort %d", fPort)
+  }
+  var message message
+  err := json.Unmarshal(decodedPayload, &message)
+  if err != nil {
+    return fmt.Errorf("Unable to parse payload, fPort %d, error %s", fPort, err)
+  }
+  (*variables)["Battery"] = database.VariableType {
+    Label: "Battery",
+    Variable: "Voltage",
+    Unit: "V",
+    Value: message.Bat,
+  }
+  (*variables)["Distance1"] = database.VariableType {
+    Label: "Distance1",
+    Variable: "Level",
+    Unit: "mm",
+    Value: (message.Dis1 * 10),
+  }
+  (*variables)["Distance2"] = database.VariableType {
+    Label: "Distance2",
+    Variable: "Level",
+    Unit: "mm",
+    Value: (message.Dis2 * 10),
+  }
+  return nil
+}
+
+
+