Hide assigned temp probes from scan results

firmware/esp32/overland-controller/sensors.cpp

@@ -52,6 +52,26 @@ bool addressMatches(DeviceAddress address, const String& expected) {
     return actual == normalizedExpected;
 }
 
+bool isTempAddressAssigned(const String& address) {
+    if (address.length() == 0) {
+        return false;
+    }
+
+    String normalizedAddress = address;
+    normalizedAddress.toUpperCase();
+
+    for (int i = 0; i < MAX_TEMP_SENSORS; i++) {
+        String assigned = appConfig.tempSensors[i].address;
+        assigned.toUpperCase();
+
+        if (assigned == normalizedAddress) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
 void clearSensorRuntimeData() {
     for (int i = 0; i < MAX_TEMP_SENSORS; i++) {
         sensors.tempsF[i] = -127.0;
@@ -72,12 +92,28 @@ int scanTempSensors() {
         sensorAddressStrings[i] = "";
     }
 
+    int availableCount = 0;
+
     for (int i = 0; i < sensorCount; i++) {
-        if (ds18b20.getAddress(sensorAddresses[i], i)) {
-            sensorAddressStrings[i] = addressToString(sensorAddresses[i]);
+        DeviceAddress address;
+
+        if (!ds18b20.getAddress(address, i)) {
+            continue;
         }
+
+        String addressString = addressToString(address);
+
+        if (isTempAddressAssigned(addressString)) {
+            continue;
+        }
+
+        memcpy(sensorAddresses[availableCount], address, 8);
+        sensorAddressStrings[availableCount] = addressString;
+        availableCount++;
     }
 
+    sensorCount = availableCount;
+
     return sensorCount;
 }