Diff: main.cpp

Revision:

2:61dd34b05a49

Parent:

0:21b36798fd00

--- a/main.cpp	Wed Jun 07 14:08:05 2017 +0000
+++ b/main.cpp	Tue Aug 21 10:56:52 2018 +0000
@@ -1,14 +1,55 @@
+/* @file HelloKeypad.cpp
+|| @version 1.1
+|| @modified by Diego (http://hotboards.org)
+|| @author Alexander Brevig
+|| @contact alexanderbrevig@gmail.com
+||
+|| @description
+|| | Demonstrates the simplest use of the matrix Keypad library.
+|| | Just press any key an it will be displayed on the serial port
+|| #
+*/
 #include "mbed.h"
- 
-SPI device(SPI_MOSI, SPI_MISO, SPI_SCK);
- 
-int main() {
-    int i = 0;
-    while(1) {
-        device.write(0x55);
-        device.write(i++);
-        device.write(0xE0);
-        wait_us(50);
+#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[ 7 ][ 7 ] =
+{
+    { '1' , '2' , '3' , '4', '5', '6' ,'a'},
+    { '7' , '8' , '9' , '0', 'Q', 'W' ,'b'},
+    { 'E' , 'R' , 'T' , 'Y', 'U', 'I' ,'c'},
+    { 'O' , 'P' , 'A' , 'S', 'D', 'F' ,'d'},
+    { 'G' , 'H' , 'J' , 'K', 'L', 'Z' ,'e'},
+    { 'X' , 'C' , 'V' , 'B', 'N', 'M' ,'f'},
+    { 0x0D , 0x20 , 0x08 , 'g','h','i','j'},     //0x0D -> Enter Key , 0x20 -> Space, 0x08-> Backspace, a , b, c may be used as functions keys.    
+};
+
+// Defines the pins connected to the rows
+DigitalInOut rowPins[ 7 ] = { D0,D1,D2,D3,D4,D5,D6};
+// Defines the pins connected to the cols
+DigitalInOut colPins[ 7 ] = { D7,D8,D9,D10,D11,D12,D13};
+
+// Creates a new keyboard with the values entered before
+Keypad kpd( makeKeymap( keys ) , rowPins , colPins , 7 , 7 );
+
+// Configures the serial port
+Serial pc( USBTX , USBRX );
+
+int main()
+{
+    pc.printf( "Press any key: " );
+    while(1)
+    {
+        // Poll the keypad to look for any activation
+        char key = kpd.waitForKey();
+        
+        // If any key was pressed
+        if( key )
+        {
+            // Display the key pressed on serial port
+            pc.printf( "Pressed key is   : %c" , key );
+            pc.printf( "\n\r" );
+        }
     }
 }
- 
\ No newline at end of file