From 2e825908dc385d23f0a7831033aa4d7cce5af6c3 Mon Sep 17 00:00:00 2001
From: KemoNine <mcrosson@kemonine.info>
Date: Mon, 1 Feb 2021 23:00:20 +0000
Subject: [PATCH] feat(nrf52840 m.2): add battery definitions

---
 app/boards/arm/nrf52840_m2/Kconfig.defconfig | 3 +++
 app/boards/arm/nrf52840_m2/nrf52840_m2.dts   | 9 ++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/app/boards/arm/nrf52840_m2/Kconfig.defconfig b/app/boards/arm/nrf52840_m2/Kconfig.defconfig
index f3e1f0eb..9bc53b31 100644
--- a/app/boards/arm/nrf52840_m2/Kconfig.defconfig
+++ b/app/boards/arm/nrf52840_m2/Kconfig.defconfig
@@ -25,4 +25,7 @@ config ZMK_BLE
 config ZMK_USB
 	default y
 
+config ZMK_BATTERY_VOLTAGE_DIVIDER
+	default y
+
 endif # BOARD_NRF52840_M2
diff --git a/app/boards/arm/nrf52840_m2/nrf52840_m2.dts b/app/boards/arm/nrf52840_m2/nrf52840_m2.dts
index a2497152..1cb9337b 100644
--- a/app/boards/arm/nrf52840_m2/nrf52840_m2.dts
+++ b/app/boards/arm/nrf52840_m2/nrf52840_m2.dts
@@ -17,6 +17,14 @@
 		zephyr,flash = &flash0;
 	};
 
+	vbatt {
+		compatible = "zmk,battery-voltage-divider";
+		label = "BATTERY";
+		io-channels = <&adc 0>; 
+		output-ohms = <1000000>;
+		full-ohms = <(1000000 + 1000000)>;
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		red_led: led_1 {
@@ -119,7 +127,6 @@
 	};
 };
 
-
 &flash0 {
 	/*
 	 * For more information, see: