diff --git a/test-app/app_stm32l4.c b/test-app/app_stm32l4.c
new file mode 100644
index 00000000..9b305c8c
--- /dev/null
+++ b/test-app/app_stm32l4.c
@@ -0,0 +1,26 @@
+#include "led.h"
+#include "hal.h"
+#include "wolfboot/wolfboot.h"
+
+#ifdef PLATFORM_stm32l4
+
+void main(void)
+{
+    uint32_t boot_version;
+    hal_init();
+    boot_led_on();
+    boot_version = wolfBoot_current_firmware_version();
+    if(boot_version == 1) {
+        /* Turn on Blue LED */
+        boot_led_on();
+        wolfBoot_update_trigger();
+    } else if(boot_version >= 2) {
+        /* Turn on Red LED */
+        led_on();
+        wolfBoot_success();
+    }
+    /* Wait for reboot */
+  while(1) { 
+  }
+}
+#endif /* PLATFORM_stm32l4 */