From 395d7d98dee775a2a26b5ee9cd2d090e97ea4c41 Mon Sep 17 00:00:00 2001
From: Daniel Esteban <conejo@theninjabunny.com>
Date: Sun, 30 Jun 2019 11:02:25 +0200
Subject: [PATCH 1/2] adds PowerSupplyActive to enable supply voltages to
 nRF52840 and peripherals

---
 src/machine/board_reelboard.go | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/machine/board_reelboard.go b/src/machine/board_reelboard.go
index 202a3daee0..7969ed9db8 100644
--- a/src/machine/board_reelboard.go
+++ b/src/machine/board_reelboard.go
@@ -4,7 +4,7 @@ package machine
 
 const HasLowFrequencyCrystal = true
 
-// LEDs on the reel board
+// Pins on the reel board
 const (
 	LED              Pin = LED1
 	LED1             Pin = LED_YELLOW
@@ -47,3 +47,13 @@ const (
 	SPI0_MOSI_PIN Pin = 45
 	SPI0_MISO_PIN Pin = 46
 )
+
+// PowerSupplyActive enables the supply voltages for nRF52840 and peripherals (true) or only for nRF52840 (false)
+func PowerSupplyActive(active bool) {
+	POWER_SUPPLY_PIN.Configure(PinConfig{Mode: PinOutput})
+	if active {
+		POWER_SUPPLY_PIN.High()
+	} else {
+		POWER_SUPPLY_PIN.Low()
+	}
+}

From a390af76eb509807350c3a1faa725fa79783c0cb Mon Sep 17 00:00:00 2001
From: Daniel Esteban <conejo@theninjabunny.com>
Date: Sun, 30 Jun 2019 12:15:38 +0200
Subject: [PATCH 2/2] added comment about boost converter

---
 src/machine/board_reelboard.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/machine/board_reelboard.go b/src/machine/board_reelboard.go
index 7969ed9db8..77af29de15 100644
--- a/src/machine/board_reelboard.go
+++ b/src/machine/board_reelboard.go
@@ -49,6 +49,8 @@ const (
 )
 
 // PowerSupplyActive enables the supply voltages for nRF52840 and peripherals (true) or only for nRF52840 (false)
+// This controls the TPS610981 boost converter. You must turn the power supply active in order to use the EPD and
+// other onboard peripherals.
 func PowerSupplyActive(active bool) {
 	POWER_SUPPLY_PIN.Configure(PinConfig{Mode: PinOutput})
 	if active {