Diff: main.cpp

Revision:

0:d39ee4a4aec6

diff -r 000000000000 -r d39ee4a4aec6 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Mar 08 20:45:33 2016 +0000
@@ -0,0 +1,73 @@
+
+#include "mbed.h"
+#include "Hotboards_keypad.h"
+#include <string>
+
+using std::string;
+
+// Defines the keys array with it's respective number of rows & cols,
+// and with the value of each key
+char keys[ 4 ][ 4 ] =
+{
+    { '1' , '2' , '3' , 'A' },
+    { '4' , '5' , '6' , 'B' },
+    { '7' , '8' , '9' , 'C' },
+    { '*' , '0' , '#' , 'D' }
+};
+
+// Defines the pins connected to the rows
+DigitalInOut rowPins[ 4 ] = { PA_6 , PA_7 , PB_6 , PC_7 };
+// Defines the pins connected to the cols
+DigitalInOut colPins[ 4 ] = { PA_8 , PB_10 , PB_4 , PB_5 };
+
+// Creates a new keyboard with the values entered before
+Keypad kpd( makeKeymap( keys ) , rowPins , colPins , 4 , 4 );
+
+// Configures the serial port
+Serial pc( USBTX , USBRX );
+
+int i;
+
+int main()
+{
+    string msg;
+    while(1)
+    {
+        // Fills kpd.key[ ] array with up-to 10 active keys.
+        // Returns true if there are ANY active keys.        
+        if( kpd.getKeys( ) )
+        {
+            // Scan the whole key list.
+            for( i = 0 ; i <= LIST_MAX ; i++ )
+            {
+                // Only find keys that have changed state.
+                if( kpd.key[ i ].stateChanged )
+                {
+                    // Report active key state : IDLE, PRESSED, HOLD, or RELEASED
+                    switch( kpd.key[ i ].kstate )
+                    {
+                        case PRESSED:
+                            msg = " PRESSED. ";
+                            break;
+                        case HOLD:
+                            msg = " HOLD. ";
+                            break;
+                        case RELEASED:
+                            msg = " RELEASED. ";
+                            break;
+                        case IDLE:
+                            msg = " IDLE. ";
+                            break;
+                        default:
+                            break;
+                    }
+                    // Print the current state of the key pressed
+                    pc.printf( "Key " );
+                    pc.printf( "%c" , kpd.key[ i ].kchar );
+                    pc.printf( "%s" , msg.c_str() );
+                    pc.printf( "\n\r" );
+                }
+            }
+        }
+    }
+}