Mitchell Pang / Keypad

A library to control a 4x3 matrix style keypad.

Keypad

A basic library to read in pushbutton presses from the Sparkfun Keypad - 12 Button.

The product site and documentation for the keypad is here. https://www.sparkfun.com/products/8653

Diff: Keypad.h

Revision:
0:fef7520ff0a6
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Keypad.h	Wed Mar 11 14:50:03 2015 +0000
@@ -0,0 +1,33 @@
+#ifndef MBED_SPFUN_KEYPAD_H
+#define MBED_SPFUN_KEYPAD_H
+
+#include "mbed.h"
+
+class Keypad
+{
+private: // private member functions
+    int getColHit();
+    int getRowHit();
+    char decode();
+    void tristate_all();
+    int log2(int num);
+public:
+
+    /** Create an ID12 RFID interface, connected to the specified Serial rx port
+    *
+    * @param rx Recieve pin
+    */
+    Keypad(PinName row1, PinName row2, PinName row3, PinName row4, PinName col1, PinName col2, PinName col3);
+
+    int getKey();
+    int isNewAndPressed();
+
+private:
+    BusInOut rows;
+    BusInOut cols;
+    char last_key_hit;
+    int row_hit;
+    int col_hit;
+
+};
+#endif
\ No newline at end of file