From ea4e399b186b6239c9160f6a47f190fc8e8dc7ec Mon Sep 17 00:00:00 2001
From: UBWH <72185209+UBWH@users.noreply.github.com>
Date: Sat, 14 Jun 2025 17:10:46 +0800
Subject: [PATCH] Create DDS75L.be (#23545)

LoRaWAN Decoder File for Dragino DDS75-LB/LS

An Ultrasonic distance sensor

https://www.dragino.com/products/distance-level-sensor/item/271-dds75-lb-ls.html
---
 .../decoders/vendors/dragino/DDS75L.be        | 89 +++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100644 tasmota/berry/lorawan/decoders/vendors/dragino/DDS75L.be

diff --git a/tasmota/berry/lorawan/decoders/vendors/dragino/DDS75L.be b/tasmota/berry/lorawan/decoders/vendors/dragino/DDS75L.be
new file mode 100644
index 000000000..fc1acfc3e
--- /dev/null
+++ b/tasmota/berry/lorawan/decoders/vendors/dragino/DDS75L.be
@@ -0,0 +1,89 @@
+# LoRaWAN Decoder file for Dragino DDS75-LB/LS
+#
+# References
+#  User Manual:     https://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/DDS75-LB_LoRaWAN_Distance_Detection_Sensor_User_Manual/
+#  TTN Device Repository: https://github.com/TheThingsNetwork/lorawan-devices/blob/master/vendor/dragino/dds75-lb.js
+
+import string
+
+global.dds75lbNodes = {}
+
+class LwDecoDDS75LB
+  static def decodeUplink(Node, RSSI, FPort, Bytes)
+    var data = {"Device":"Dragino DDS75-LB/LS"}
+    data.insert("Node", Node)
+
+    var valid_values = false
+    var last_seen = 1451602800
+    var battery_last_seen = 1451602800
+    var battery = 1000
+    var rssi = RSSI
+    var distance = 0
+
+    if global.dds75lbNodes.find(Node)
+      last_seen = global.dds75lbNodes.item(Node)[1]
+      battery_last_seen = global.dds75lbNodes.item(Node)[2]
+      battery = global.dds75lbNodes.item(Node)[3]
+      rssi = global.dds75lbNodes.item(Node)[4]
+      distance = global.dds75lbNodes.item(Node)[5]
+    end
+
+    ## SENSOR DATA ##
+    if 2 == FPort && 8 == Bytes.size() &&  0 == ( Bytes[0] & 0x10 )
+      last_seen = tasmota.rtc('local')
+	  	  
+	  battery_last_seen = tasmota.rtc('local')
+      battery = ((Bytes[0] << 8) | Bytes[1]) / 1000.0
+      data.insert("BattV",battery)
+      
+	  distance=Bytes[2]<<8 | Bytes[3] 
+      data.insert("Distance",distance)
+  
+      valid_values = true
+
+    ## STATUS DATA ##
+    elif 5 == FPort && 7 == Bytes.size()
+      data.insert("Sensor_Model",Bytes[0])
+      data.insert("Firmware_Version", f'v{Bytes[1]:%u}.{Bytes[2]>>4:%u}.{Bytes[2]&0xF:%u}')
+      data.insert("Freq_Band",LwRegions[Bytes[3]-1])
+      data.insert("Sub_Band",Bytes[4])
+      battery_last_seen = tasmota.rtc('local')
+      battery = ((Bytes[5] << 8) | Bytes[6]) / 1000.0
+      valid_values = true
+    else
+    # Ignore other Fports
+    end #Fport
+
+    if valid_values
+      if global.dds75lbNodes.find(Node)
+        global.dds75lbNodes.remove(Node)
+      end
+      #                                 sensor[0]   [1]        [2]                [3]      [4]   [5]           
+      global.dds75lbNodes.insert(Node, [Node,       last_seen, battery_last_seen, battery, RSSI, distance])
+    end
+
+    return data
+  end #decodeUplink()
+
+  static def add_web_sensor()
+    var msg = ""
+    for sensor: global.dds75lbNodes
+      var name = string.format("DDS75-L-%i", sensor[0])
+      var name_tooltip = "Dragino DDS75-L"
+      var last_seen = sensor[1]
+      var battery_last_seen = sensor[2]
+      var battery = sensor[3]
+      var rssi = sensor[4]
+      msg += lwdecode.header(name, name_tooltip, battery, battery_last_seen, rssi, last_seen)
+
+      # Sensors
+      var distance = sensor[5]
+      msg += "<tr class='htr'><td colspan='4'>&#9478;"                   # |
+      msg += string.format(" &#11123;&#xFE0F; %.0fmm", distance)         # ⭳          
+      msg += "{e}"                                                       # = </td></tr>
+    end
+    return msg
+  end #add_web_sensor()
+end #class
+
+LwDeco = LwDecoDDS75LB