From 72757b5ae7885861c8ee4cdc4b4e9cdf85fb43aa Mon Sep 17 00:00:00 2001
From: Wolfgang Hottgenroth <wolfgang.hottgenroth@icloud.com>
Date: Fri, 12 Jul 2024 11:16:37 +0200
Subject: [PATCH] add hottis threeway thermometer

---
 src/udi/config-test-ttn.json                  |  2 +-
 .../hottisThreeWayThermometer.go              | 74 +++++++++++++++++++
 src/udi/handlers/ttn/ttn.go                   |  3 +
 3 files changed, 78 insertions(+), 1 deletion(-)
 create mode 100644 src/udi/handlers/ttn/models/hottisThreeWayThermometer/hottisThreeWayThermometer.go

diff --git a/src/udi/config-test-ttn.json b/src/udi/config-test-ttn.json
index 78ff7a3..b8229a9 100644
--- a/src/udi/config-test-ttn.json
+++ b/src/udi/config-test-ttn.json
@@ -1,7 +1,7 @@
 {
   "mqtt": {
     "broker": "ssl://eu1.cloud.thethings.network:8883",
-    "username": "de-hottis-lora-test1@ttn",
+    "username": "de-hottis-saerbeck-monitoring@ttn",
     "tlsEnable": "true"
   },
   "topicMappings": [
diff --git a/src/udi/handlers/ttn/models/hottisThreeWayThermometer/hottisThreeWayThermometer.go b/src/udi/handlers/ttn/models/hottisThreeWayThermometer/hottisThreeWayThermometer.go
new file mode 100644
index 0000000..a1f7a14
--- /dev/null
+++ b/src/udi/handlers/ttn/models/hottisThreeWayThermometer/hottisThreeWayThermometer.go
@@ -0,0 +1,74 @@
+package hottisThreeWayThermometer
+
+import (
+  "log"
+  "fmt"
+  "bytes"
+  "encoding/base64"
+  "encoding/binary"
+  "udi/database"
+)
+
+type hottisThreeWayThermometerValues struct {
+  Status uint8
+//  Battery uint16
+  SensorAddress1 uint64
+  Value1 int32
+  SensorAddress2 uint64
+  Value2 int32
+  SensorAddress3 uint64
+  Value3 int32 
+}
+
+
+func Parse(fPort int, _ []byte, frmPayload string, variables *map[string]database.VariableType, attributes *map[string]interface{}, _ *database.Device) error {
+  if fPort != 2 {
+    return fmt.Errorf("Unexpected fPort %d", fPort)
+  }
+
+  b, err := base64.StdEncoding.DecodeString(frmPayload)
+  if err != nil {
+    return fmt.Errorf("Unable to base64-decode payload: %v", err)
+  }
+
+  var values hottisThreeWayThermometerValues
+  err = binary.Read(bytes.NewReader(b), binary.LittleEndian, &values)
+  if err != nil {
+    return fmt.Errorf("Unable to cast into struct: %v", err)
+  }
+
+  var value1 float32 = float32(values.Value1) / 128.0
+  var value2 float32 = float32(values.Value2) / 128.0
+  var value3 float32 = float32(values.Value3) / 128.0
+
+  //log.Printf("Status: %d, Battery: %d", values.Status, values.Battery);
+  log.Printf("Status: %d", values.Status);
+  log.Printf("Sensor1: Addr: %d, Value: %f", values.SensorAddress1, value1);
+  log.Printf("Sensor2: Addr: %d, Value: %f", values.SensorAddress2, value2);
+  log.Printf("Sensor3: Addr: %d, Value: %f", values.SensorAddress3, value3);
+
+  (*variables)["Temperature1"] = database.VariableType {
+    Label: "Temperature1",
+    Variable: "Temperature",
+    Unit: "°C",
+    Value: value1,
+  }
+  (*variables)["Temperature2"] = database.VariableType {
+    Label: "Temperature2",
+    Variable: "Temperature",
+    Unit: "°C",
+    Value: value2,
+  }
+  (*variables)["Temperature3"] = database.VariableType {
+    Label: "Temperature3",
+    Variable: "Temperature",
+    Unit: "°C",
+    Value: value3,
+  }
+
+  (*attributes)["Status"] = values.Status
+  (*attributes)["SensorAddress1"] = values.SensorAddress1
+  (*attributes)["SensorAddress2"] = values.SensorAddress2
+  (*attributes)["SensorAddress3"] = values.SensorAddress3
+  return nil
+}
diff --git a/src/udi/handlers/ttn/ttn.go b/src/udi/handlers/ttn/ttn.go
index eb0ea3a..5731fd7 100644
--- a/src/udi/handlers/ttn/ttn.go
+++ b/src/udi/handlers/ttn/ttn.go
@@ -14,6 +14,7 @@ import (
   "udi/handlers/ttn/models/draginoLsn50"
   "udi/handlers/ttn/models/rawPayloadPrinter"
   "udi/handlers/ttn/models/hottisScd30"
+  "udi/handlers/ttn/models/hottisThreeWayThermometer"
   "udi/database"
 )
 
@@ -152,6 +153,8 @@ func (self *TTNHandler) Handle(message handler.MessageT) {
     parser = rawPayloadPrinter.Parse
   case "hottis-scd30":
     parser = hottisScd30.Parse
+  case "hottis-threeway-thermometer":
+    parser = hottisThreeWayThermometer.Parse
   default:
     self.Lost(fmt.Sprintf("No parser found for %s", device.DeviceType.ModelIdentifier), nil, message)
     return