From bbf0b36a91f8e23c7a01df97aa053a2a0f690088 Mon Sep 17 00:00:00 2001
From: Warren Fernandes <warren.f.fernandes@gmail.com>
Date: Wed, 26 Oct 2016 23:20:43 -0600
Subject: [PATCH] Adds support for Grove Magnetic Switch Sensor

- http://wiki.seeed.cc/Grove-Magnetic_Switch/

Signed-off-by: Warren Fernandes <warren.f.fernandes@gmail.com>
---
 drivers/gpio/README.md             |  1 +
 drivers/gpio/grove_drivers.go      | 17 +++++++++++++++++
 drivers/gpio/grove_drivers_test.go |  1 +
 3 files changed, 19 insertions(+)

diff --git a/drivers/gpio/README.md b/drivers/gpio/README.md
index c9e9186c..6ce94c6a 100644
--- a/drivers/gpio/README.md
+++ b/drivers/gpio/README.md
@@ -26,6 +26,7 @@ Gobot has a extensible system for connecting to hardware devices. The following
   - Grove Rotary Dial
   - Grove Relay
   - Grove Temperature Sensor
+  - Grove Magnetic Switch Sensor
   - LED
   - Makey Button
   - Motor
diff --git a/drivers/gpio/grove_drivers.go b/drivers/gpio/grove_drivers.go
index adc317e8..94c2d2c9 100644
--- a/drivers/gpio/grove_drivers.go
+++ b/drivers/gpio/grove_drivers.go
@@ -174,3 +174,20 @@ func NewGroveTouchDriver(a DigitalReader, pin string, v ...time.Duration) *Grove
 		ButtonDriver: NewButtonDriver(a, pin, v...),
 	}
 }
+
+// GroveMagneticSwitchDriver represent a magnetic
+// switch sensor with a Grove connector
+type GroveMagneticSwitchDriver struct {
+	*ButtonDriver
+}
+
+// NewGroveMagneticSwitchDriver returns a new GroveMagneticSwitchDriver with a polling interval of
+// 10 Milliseconds given a DigitalReader, name and pin.
+//
+// Optionally accepts:
+//  time.Duration: Interval at which the ButtonDriver is polled for new information
+func NewGroveMagneticSwitchDriver(a DigitalReader, pin string, v ...time.Duration) *GroveMagneticSwitchDriver {
+	return &GroveMagneticSwitchDriver{
+		ButtonDriver: NewButtonDriver(a, pin, v...),
+	}
+}
diff --git a/drivers/gpio/grove_drivers_test.go b/drivers/gpio/grove_drivers_test.go
index bc7ad3b4..18dee558 100644
--- a/drivers/gpio/grove_drivers_test.go
+++ b/drivers/gpio/grove_drivers_test.go
@@ -13,3 +13,4 @@ var _ gobot.Driver = (*GrovePiezoVibrationSensorDriver)(nil)
 var _ gobot.Driver = (*GroveLedDriver)(nil)
 var _ gobot.Driver = (*GroveRotaryDriver)(nil)
 var _ gobot.Driver = (*GroveRelayDriver)(nil)
+var _ gobot.Driver = (*GroveMagneticSwitchDriver)(nil)