From be1d30c4c8326f75370aa2a6413953a4ea77cb6e Mon Sep 17 00:00:00 2001
From: Laurens Valk <laurens@pybricks.com>
Date: Mon, 22 Jul 2019 11:44:56 +0200
Subject: [PATCH] api/ev3devices: add InfraredSensor.keypad

---
 pybricks/ev3devices.py | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/pybricks/ev3devices.py b/pybricks/ev3devices.py
index 490716c..d03679b 100644
--- a/pybricks/ev3devices.py
+++ b/pybricks/ev3devices.py
@@ -153,6 +153,9 @@ class InfraredSensor():
     def buttons(self, channel):
         """Check which buttons on the infrared remote are pressed.
 
+        This method can detect up to two buttons at once. If you press
+        more buttons, you may not get useful data.
+
         Arguments:
             channel (int): Channel number of the remote.
 
@@ -162,6 +165,20 @@ class InfraredSensor():
         """
         pass
 
+    def keypad(self):
+        """Check which buttons on the infrared remote are pressed.
+
+        This method can independently detect all 4 up/down buttons, but
+        it cannot detect the beacon button.
+
+        This method only works with the remote in channel 1.
+
+        :returns: List of pressed buttons on the remote on selected channel.
+        :rtype: List of :class:`Button <.parameters.Button>`
+
+        """
+        pass
+
 
 class GyroSensor():
     """LEGO® MINDSTORMS® EV3 Gyro Sensor.