Limit device name length during BLE.

Author: nseidle

Firmware/RTK_Surveyor/Bluetooth.ino

@@ -158,9 +158,28 @@ void bluetoothStart()
         else
             log_d("State out of range for Bluetooth Broadcast: %d", systemState);
 
-        snprintf(deviceName, sizeof(deviceName), "%s %s%02X%02X", platformPrefix, stateName, btMACAddress[4],
+        char productName[50] = {0};
+        strncpy(productName, platformPrefix, sizeof(productName));
+
+        // BLE is limited to ~28 characters in the device name. Shorten platformPrefix if needed.
+        if (settings.bluetoothRadioType == BLUETOOTH_RADIO_BLE)
+        {
+            if (strcmp(productName, "Facet L-Band Direct") == 0)
+            {
+                strncpy(productName, "Facet L-Band", sizeof(productName));
+            }
+        }
+
+        snprintf(deviceName, sizeof(deviceName), "%s %s%02X%02X", productName, stateName, btMACAddress[4],
                  btMACAddress[5]);
 
+        if (strlen(deviceName) > 28)
+        {
+            if (ENABLE_DEVELOPER)
+                systemPrintf("Warning! The Bluetooth device name '%s' is %d characters long. It may not work in BLE mode.\r\n", deviceName, 
+                             strlen(deviceName));
+        }
+
         // Select Bluetooth setup
         if (settings.bluetoothRadioType == BLUETOOTH_RADIO_OFF)
             return;