commit ca06b9fe6d3c20a824a3f7e1196e89ab6134d08b
author Fabian Pflug <fabian.pflug@gumulka.eu> Sat Aug 24 11:15:39 2024 +0200
committer Jamie <40387179+nordicjm@users.noreply.github.com> Thu Sep 12 09:38:17 2024 +0100
tree df99570458236c1f5b9bbea42e0c1e79b4d68664
parent 84b56b61118a1140e1afcb8802e2d94dd9fee44d

boot: zephyr: Add fallback to USB DFU

Allow bootloader to fallback to USB DFU if no application is present,
that can be booted from. Similar to config BOOT_SERIAL_NO_APPLICATION.

Signed-off-by: Fabian Pflug <fabian.pflug@gumulka.eu>

boot/zephyr/main.c

diff --git a/boot/zephyr/main.c b/boot/zephyr/main.c
index ccabc28..fe0016c 100644
--- a/boot/zephyr/main.c
+++ b/boot/zephyr/main.c
@@ -531,6 +531,14 @@
          * recovery mode
          */
         boot_serial_enter();
+#elif defined(CONFIG_BOOT_USB_DFU_NO_APPLICATION)
+        rc = usb_enable(NULL);
+        if (rc && rc != -EALREADY) {
+            BOOT_LOG_ERR("Cannot enable USB");
+        } else {
+            BOOT_LOG_INF("Waiting for USB DFU");
+            wait_for_usb_dfu(K_FOREVER);
+        }
 #endif
 
         FIH_PANIC;