sp1 board def

ports/nordic/background.c

@@ -40,6 +40,9 @@ void port_background_tick(void) {
 MP_WEAK void board_background_task(void) {
 }
 
+MP_WEAK void board_wdt_feed(void) {
+}
+
 void port_background_task(void) {
     board_background_task();
 }

ports/nordic/background.h

@@ -7,3 +7,6 @@
 #pragma once
 
 void board_background_task(void);
+
+// Feed a watchdog that wasn't armed by CircuitPython i.e. a boards custom bootloader
+void board_wdt_feed(void);

ports/nordic/board.h

@@ -0,0 +1,10 @@
+// This file is part of the CircuitPython project: https://circuitpython.org
+//
+// SPDX-FileCopyrightText: Copyright (c) 2026 Tim Cocks for Adafruit Industries
+//
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+// Called from port_init() before any peripheral is initialized.
+void board_early_init(void);