From 844f2c76749cbc5ff611d8e69819af82b698089a Mon Sep 17 00:00:00 2001
From: Nick <nick.win999@gmail.com>
Date: Sat, 19 Sep 2020 19:14:59 -0500
Subject: Voltage divider driver initial implementation

---
 app/boards/arm/nice_nano/nice_nano.dts       | 10 ++++++++++
 app/boards/arm/nice_nano/nice_nano_defconfig |  4 ++++
 2 files changed, 14 insertions(+)

(limited to 'app/boards')

diff --git a/app/boards/arm/nice_nano/nice_nano.dts b/app/boards/arm/nice_nano/nice_nano.dts
index 2e9556b..18312ec 100644
--- a/app/boards/arm/nice_nano/nice_nano.dts
+++ b/app/boards/arm/nice_nano/nice_nano.dts
@@ -29,6 +29,16 @@
 		};
 	};
 
+	vbatt {
+		compatible = "zmk,battery-voltage-divider";
+		io-channels = <&adc 2>;
+		output-ohms = <2000000>;
+		full-ohms = <(2000000 + 806000)>;
+	};
+};
+
+&adc {
+	status = "okay";
 };
 
 &gpio0 {
diff --git a/app/boards/arm/nice_nano/nice_nano_defconfig b/app/boards/arm/nice_nano/nice_nano_defconfig
index 393d61f..b727fe0 100644
--- a/app/boards/arm/nice_nano/nice_nano_defconfig
+++ b/app/boards/arm/nice_nano/nice_nano_defconfig
@@ -10,6 +10,10 @@ CONFIG_ARM_MPU=y
 # enable GPIO
 CONFIG_GPIO=y
 
+CONFIG_ADC=y
+
+CONFIG_NEWLIB_LIBC=y
+
 CONFIG_USE_DT_CODE_PARTITION=y
 
 CONFIG_MPU_ALLOW_FLASH_WRITE=y
-- 
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