From d2bbe4d8d3629f1d44b27b8af0264799ce54c63e Mon Sep 17 00:00:00 2001
From: entr0p1 <1475255+entr0p1@users.noreply.github.com>
Date: Mon, 20 Jul 2026 22:43:25 +1000
Subject: [PATCH] Fix Xiao nRF52840 repeater compile failure

Compile fails due to user_btn not declared in board target.

Fixes:
- Add MomentaryButton declaration for user_btn in variants/xiao_nrf52/target.cpp
- Add momentary button helper include in variants/xiao_nrf52/target.h
- Add extern linkage for MomentaryButton -> user_btn in variants/xiao_nrf52/target.h
---
 variants/xiao_nrf52/XiaoNrf52Board.h | 2 +-
 variants/xiao_nrf52/target.cpp       | 1 +
 variants/xiao_nrf52/target.h         | 2 ++
 3 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/variants/xiao_nrf52/XiaoNrf52Board.h b/variants/xiao_nrf52/XiaoNrf52Board.h
index b2638a440..e71e7f651 100644
--- a/variants/xiao_nrf52/XiaoNrf52Board.h
+++ b/variants/xiao_nrf52/XiaoNrf52Board.h
@@ -47,7 +47,7 @@ public:
 
 #ifdef PIN_USER_BTN
     // configure button press to wake up when in powered off state
-    nrf_gpio_cfg_sense_input(digitalPinToInterrupt(g_ADigitalPinMap[PIN_USER_BTN]), NRF_GPIO_PIN_NOPULL, NRF_GPIO_PIN_SENSE_LOW);
+    nrf_gpio_cfg_sense_input(digitalPinToInterrupt(g_ADigitalPinMap[PIN_USER_BTN]), NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_LOW);
 #endif
 
     NRF52Board::powerOff();
diff --git a/variants/xiao_nrf52/target.cpp b/variants/xiao_nrf52/target.cpp
index ab6fe279a..def1dbbea 100644
--- a/variants/xiao_nrf52/target.cpp
+++ b/variants/xiao_nrf52/target.cpp
@@ -4,6 +4,7 @@
 
 #ifdef DISPLAY_CLASS
   DISPLAY_CLASS display;
+  MomentaryButton user_btn(PIN_USER_BTN, 1000, true, true);
 #endif
 
 XiaoNrf52Board board;
diff --git a/variants/xiao_nrf52/target.h b/variants/xiao_nrf52/target.h
index bb3d2a81f..20093904a 100644
--- a/variants/xiao_nrf52/target.h
+++ b/variants/xiao_nrf52/target.h
@@ -11,7 +11,9 @@
 
 #ifdef DISPLAY_CLASS
   #include <helpers/ui/NullDisplayDriver.h>
+  #include <helpers/ui/MomentaryButton.h>
   extern DISPLAY_CLASS display;
+  extern MomentaryButton user_btn;
 #endif
 
 extern XiaoNrf52Board board;