Fix crash bug when opening settings without a radio connected.

android-src/KV4PHT/app/build.gradle

@@ -10,8 +10,8 @@ android {
         applicationId "com.vagell.kv4pht"
         minSdk 26
         targetSdk 34
-        versionCode 31
-        versionName "1.6.7"
+        versionCode 32
+        versionName "1.7.0"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 

android-src/KV4PHT/app/src/main/java/com/vagell/kv4pht/firmware/FirmwareUtils.java

@@ -18,11 +18,11 @@ public class FirmwareUtils {
     private static int progressPercent = 0;
 
     // Whenever there is new firmware, put the files in res/raw, and update these constants.
-    public static final int PACKAGED_FIRMWARE_VER = 9;
-    private static final int FIRMWARE_FILE_1_ID = R.raw.v9_kv4p_ht_esp32_wroom_32_ino_bootloader;
-    private static final int FIRMWARE_FILE_2_ID = R.raw.v9_kv4p_ht_esp32_wroom_32_ino_partitions;
+    public static final int PACKAGED_FIRMWARE_VER = 10;
+    private static final int FIRMWARE_FILE_1_ID = R.raw.v10_kv4p_ht_esp32_wroom_32_ino_bootloader;
+    private static final int FIRMWARE_FILE_2_ID = R.raw.v10_kv4p_ht_esp32_wroom_32_ino_partitions;
     private static final int FIRMWARE_FILE_3_ID = R.raw.boot_app0; // This one never changes, it's the Arduino ESP32 bootloader
-    private static final int FIRMWARE_FILE_4_ID = R.raw.v9_kv4p_ht_esp32_wroom_32_ino;
+    private static final int FIRMWARE_FILE_4_ID = R.raw.v10_kv4p_ht_esp32_wroom_32_ino;
 
     public FirmwareUtils() {
     }

android-src/KV4PHT/app/src/main/java/com/vagell/kv4pht/radio/RadioAudioService.java

@@ -1218,6 +1218,12 @@ public synchronized void sendBytesToESP32(byte[] newBytes) {
             Log.d("DEBUG", "Warning: Attempted to send bytes to ESP32 while in the process of flashing a new firmware.");
             return;
         }
+
+        if (null == usbIoManager) {
+            Log.d("DEBUG", "Warning: usbIoManager was null when trying to send bytes to ESP32.");
+            return;
+        }
+
         usbIoManager.writeAsync(newBytes);
     }
 

microcontroller-src/kv4p_ht_esp32_wroom_32/kv4p_ht_esp32_wroom_32.ino

@@ -25,7 +25,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <driver/dac.h>
 #include <esp_task_wdt.h>
 
-const byte FIRMWARE_VER[8] = {'0', '0', '0', '0', '0', '0', '0', '9'}; // Should be 8 characters representing a zero-padded version, like 00000001.
+const byte FIRMWARE_VER[8] = {'0', '0', '0', '0', '0', '0', '1', '0'}; // Should be 8 characters representing a zero-padded version, like 00000001.
 const byte VERSION_PREFIX[7] = {'V', 'E', 'R', 'S', 'I', 'O', 'N'}; // Must match RadioAudioService.VERSION_PREFIX in Android app.
 
 // Commands defined here must match the Android app