Fix build error when MCUBOOT_APPLICATION_DFU is not enabled

Author: pennam

app/target.cpp

@@ -243,8 +243,8 @@ int target_init(void) {
     HAL_FLASH_Lock();
     if(valid_application() && empty_keys()) {
       BOOT_LOG_INF("MCUboot not configured, but valid image found.");
-      BOOT_LOG_INF("Booting firmware image at 0x%x\n", USBD_DFU_APP_DEFAULT_ADD);
-      mbed_start_application(USBD_DFU_APP_DEFAULT_ADD);
+      BOOT_LOG_INF("Booting firmware image at 0x%x\n", APP_DEFAULT_ADD);
+      mbed_start_application(APP_DEFAULT_ADD);
     }
     swap_ticker.attach(&swap_feedback, 250ms);
     return 0;

app/target.h

@@ -29,6 +29,12 @@
 #include "usbd_dfu_flash.h"
 #endif
 
+#if MCUBOOT_APPLICATION_DFU
+#define APP_DEFAULT_ADD USBD_DFU_APP_DEFAULT_ADD
+#else
+#define APP_DEFAULT_ADD 0x08040000
+#endif
+
 #define BOOTLOADER_CONFIG_MAGIC   0xA0
 #define BOOTLOADER_VERSION        2