Diff: main.cpp

Revision:

0:a2b95a8cb722

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Mar 08 20:46:03 2016 +0000
@@ -0,0 +1,78 @@
+
+#include "mbed.h"
+#include "Hotboards_keypad.h"
+
+// 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 );
+
+// For this example we will use the Nucleo LED1 on pin PA_5
+DigitalOut led1( LED1 );
+bool blink = false;
+bool ledPin_state;
+
+
+// Taking care of some special events.
+void kpdEvent( KeypadEvent key )
+{
+    switch( kpd.getState( ) )
+    {
+        case PRESSED:
+            if( key == '#' )
+            {
+                led1 = !led1;
+                ledPin_state = led1; // Remember LED state, lit or unlit.
+            }
+            break;
+        case RELEASED:
+            if( key == '*' )
+            {
+                led1 = ledPin_state;
+                blink = false; // Restore LED state from before it started blinking.
+            }
+            break;
+        case HOLD:
+            if( key == '*' )
+            {
+                blink = true; // Blink the LED when holding the * key.
+            }
+            break;
+    }
+}
+
+int main()
+{
+    led1 = 1; // Turn the LED on.
+    ledPin_state = led1; // Store initial LED state. HIGH when LED is on.
+    kpd.addEventListener( kpdEvent ); // Add an event listener for this keypad
+    while(1)
+    {
+        char key = kpd.getKey( );
+        if( key )
+        {
+            pc.printf( "%c" , key );
+        }
+        if( blink )
+        {
+            led1 = !led1; // Change the ledPin from Hi2Lo or Lo2Hi
+            wait_ms( 100 );
+        }
+    }
+}