hobbielektronika / Mbed 2 deprecated 26_Hotboards_EventKeypad

Demonstrates handling events of a 4x4 keypad Forked from https://developer.mbed.org/users/Hotboards/code/Hotboards_EventKeypad/

Dependencies:   Hotboards_keypad mbed

Fork of Hotboards_EventKeypad by Hotboards MX

main.cpp@2:252f5ac72f2d, 2016-05-30 (annotated)

Committer:
icserny
Date:
Mon May 30 10:08:56 2016 +0000
Revision:
2:252f5ac72f2d
Parent:
1:88d227ecb9b3 
First version;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Hotboards 1:88d227ecb9b3 1 /* @file Hotboards_keypad.cpp
icserny 2:252f5ac72f2d 2 || @version 1.2
icserny 2:252f5ac72f2d 3 || @modified by Istvan Cserny
icserny 2:252f5ac72f2d 4 || @contact https://developer.mbed.org/users/icserny/
Hotboards 1:88d227ecb9b3 5 || @version 1.1
Hotboards 1:88d227ecb9b3 6 || @modified by Diego (http://hotboards.org)
Hotboards 1:88d227ecb9b3 7 || @author Alexander Brevig
Hotboards 1:88d227ecb9b3 8 || @contact alexanderbrevig@gmail.com
Hotboards 1:88d227ecb9b3 9 ||
Hotboards 1:88d227ecb9b3 10 || @description
Hotboards 1:88d227ecb9b3 11 || | Demonstrates using the KeypadEvent.
icserny 2:252f5ac72f2d 12 ||
icserny 2:252f5ac72f2d 13 || Hardware requirements:
icserny 2:252f5ac72f2d 14 || - FRDM-KL25Z board
icserny 2:252f5ac72f2d 15 || - 4x4 keypad connected to PTB8,9,10,11 and PTE2,3,4,5
Hotboards 1:88d227ecb9b3 16 */
RomanValenciaP 0:a2b95a8cb722 17 #include "mbed.h"
RomanValenciaP 0:a2b95a8cb722 18 #include "Hotboards_keypad.h"
RomanValenciaP 0:a2b95a8cb722 19
RomanValenciaP 0:a2b95a8cb722 20 // Defines the keys array with it's respective number of rows & cols,
RomanValenciaP 0:a2b95a8cb722 21 // and with the value of each key
RomanValenciaP 0:a2b95a8cb722 22 char keys[ 4 ][ 4 ] =
RomanValenciaP 0:a2b95a8cb722 23 {
RomanValenciaP 0:a2b95a8cb722 24 { '1' , '2' , '3' , 'A' },
RomanValenciaP 0:a2b95a8cb722 25 { '4' , '5' , '6' , 'B' },
RomanValenciaP 0:a2b95a8cb722 26 { '7' , '8' , '9' , 'C' },
RomanValenciaP 0:a2b95a8cb722 27 { '*' , '0' , '#' , 'D' }
RomanValenciaP 0:a2b95a8cb722 28 };
RomanValenciaP 0:a2b95a8cb722 29
RomanValenciaP 0:a2b95a8cb722 30 // Defines the pins connected to the rows
icserny 2:252f5ac72f2d 31 DigitalInOut rowPins[ 4 ] = { PTB8 , PTB9 , PTB10 , PTB11 };
RomanValenciaP 0:a2b95a8cb722 32 // Defines the pins connected to the cols
icserny 2:252f5ac72f2d 33 DigitalInOut colPins[ 4 ] = { PTE2 , PTE3 , PTE4 , PTE5 };
RomanValenciaP 0:a2b95a8cb722 34
RomanValenciaP 0:a2b95a8cb722 35 // Creates a new keyboard with the values entered before
RomanValenciaP 0:a2b95a8cb722 36 Keypad kpd( makeKeymap( keys ) , rowPins , colPins , 4 , 4 );
RomanValenciaP 0:a2b95a8cb722 37
RomanValenciaP 0:a2b95a8cb722 38 // Configures the serial port
RomanValenciaP 0:a2b95a8cb722 39 Serial pc( USBTX , USBRX );
RomanValenciaP 0:a2b95a8cb722 40
RomanValenciaP 0:a2b95a8cb722 41 // For this example we will use the Nucleo LED1 on pin PA_5
RomanValenciaP 0:a2b95a8cb722 42 DigitalOut led1( LED1 );
RomanValenciaP 0:a2b95a8cb722 43 bool blink = false;
RomanValenciaP 0:a2b95a8cb722 44 bool ledPin_state;
RomanValenciaP 0:a2b95a8cb722 45
RomanValenciaP 0:a2b95a8cb722 46
RomanValenciaP 0:a2b95a8cb722 47 // Taking care of some special events.
RomanValenciaP 0:a2b95a8cb722 48 void kpdEvent( KeypadEvent key )
RomanValenciaP 0:a2b95a8cb722 49 {
RomanValenciaP 0:a2b95a8cb722 50 switch( kpd.getState( ) )
RomanValenciaP 0:a2b95a8cb722 51 {
RomanValenciaP 0:a2b95a8cb722 52 case PRESSED:
RomanValenciaP 0:a2b95a8cb722 53 if( key == '#' )
RomanValenciaP 0:a2b95a8cb722 54 {
RomanValenciaP 0:a2b95a8cb722 55 led1 = !led1;
RomanValenciaP 0:a2b95a8cb722 56 ledPin_state = led1; // Remember LED state, lit or unlit.
RomanValenciaP 0:a2b95a8cb722 57 }
RomanValenciaP 0:a2b95a8cb722 58 break;
RomanValenciaP 0:a2b95a8cb722 59 case RELEASED:
RomanValenciaP 0:a2b95a8cb722 60 if( key == '*' )
RomanValenciaP 0:a2b95a8cb722 61 {
RomanValenciaP 0:a2b95a8cb722 62 led1 = ledPin_state;
RomanValenciaP 0:a2b95a8cb722 63 blink = false; // Restore LED state from before it started blinking.
RomanValenciaP 0:a2b95a8cb722 64 }
RomanValenciaP 0:a2b95a8cb722 65 break;
RomanValenciaP 0:a2b95a8cb722 66 case HOLD:
RomanValenciaP 0:a2b95a8cb722 67 if( key == '*' )
RomanValenciaP 0:a2b95a8cb722 68 {
RomanValenciaP 0:a2b95a8cb722 69 blink = true; // Blink the LED when holding the * key.
RomanValenciaP 0:a2b95a8cb722 70 }
RomanValenciaP 0:a2b95a8cb722 71 break;
RomanValenciaP 0:a2b95a8cb722 72 }
RomanValenciaP 0:a2b95a8cb722 73 }
RomanValenciaP 0:a2b95a8cb722 74
RomanValenciaP 0:a2b95a8cb722 75 int main()
RomanValenciaP 0:a2b95a8cb722 76 {
RomanValenciaP 0:a2b95a8cb722 77 led1 = 1; // Turn the LED on.
RomanValenciaP 0:a2b95a8cb722 78 ledPin_state = led1; // Store initial LED state. HIGH when LED is on.
RomanValenciaP 0:a2b95a8cb722 79 kpd.addEventListener( kpdEvent ); // Add an event listener for this keypad
RomanValenciaP 0:a2b95a8cb722 80 while(1)
RomanValenciaP 0:a2b95a8cb722 81 {
RomanValenciaP 0:a2b95a8cb722 82 char key = kpd.getKey( );
RomanValenciaP 0:a2b95a8cb722 83 if( key )
RomanValenciaP 0:a2b95a8cb722 84 {
RomanValenciaP 0:a2b95a8cb722 85 pc.printf( "%c" , key );
RomanValenciaP 0:a2b95a8cb722 86 }
RomanValenciaP 0:a2b95a8cb722 87 if( blink )
RomanValenciaP 0:a2b95a8cb722 88 {
RomanValenciaP 0:a2b95a8cb722 89 led1 = !led1; // Change the ledPin from Hi2Lo or Lo2Hi
RomanValenciaP 0:a2b95a8cb722 90 wait_ms( 100 );
RomanValenciaP 0:a2b95a8cb722 91 }
RomanValenciaP 0:a2b95a8cb722 92 }
RomanValenciaP 0:a2b95a8cb722 93 }