From aa79502d5aca48ac9e95013e2a181f80723eaaea Mon Sep 17 00:00:00 2001
From: afiqzudinhadi <afiqzudinhadi@gmail.com>
Date: Wed, 24 Jun 2026 20:03:22 +0800
Subject: [PATCH] fix: guard ext_power usage behind
 CONFIG_ZMK_RGB_UNDERGLOW_EXT_POWER

The battery low-power code referenced ext_power unconditionally, causing
build failure when CONFIG_ZMK_RGB_UNDERGLOW_EXT_POWER=n.
---
 app/src/rgb_underglow.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/app/src/rgb_underglow.c b/app/src/rgb_underglow.c
index 9af51dc8..24ffd875 100644
--- a/app/src/rgb_underglow.c
+++ b/app/src/rgb_underglow.c
@@ -254,6 +254,7 @@ static void zmk_led_write_pixels(void) {
     // battery below minimum charge
     if (bat0 < 10) {
         memset(pixels, 0, sizeof(struct led_rgb) * STRIP_NUM_PIXELS);
+#if IS_ENABLED(CONFIG_ZMK_RGB_UNDERGLOW_EXT_POWER)
         if (state.on) {
             int c_power = ext_power_get(ext_power);
             if (c_power && !state.status_active) {
@@ -262,6 +263,7 @@ static void zmk_led_write_pixels(void) {
                 reset_ext_power = true;
             }
         }
+#endif
     }
 
     if (blend == 0) {