Diff: main.cpp

Revision:

0:dd375f44efef

Child:

1:f531f70a27c3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Dec 07 06:54:24 2016 +0000
@@ -0,0 +1,77 @@
+#include "mbed.h"
+#include <mpr121.h>
+
+// on-board LEDs
+DigitalOut led1 ( LED1 ) ;
+DigitalOut led2 ( LED2 ) ;
+DigitalOut led3 ( LED3 ) ;
+DigitalOut led4 ( LED4 ) ;
+
+// COM port 
+Serial com( USBTX , USBRX , 9600 ); 
+
+// keypad
+InterruptIn interrupt ( p26 ) ; 
+I2C i2c ( p9 , p10 ) ;
+Mpr121 keypad ( & i2c , Mpr121::ADD_VSS ) ; 
+
+int unsigned pin_count ( 0 ) ;
+int unsigned pin_value ( 0 ) ;
+void keypad_callback ( ) 
+{
+    // TEST
+    led2 = ! led2 ;
+//    com.putc ( 'y' ) ;
+//    com.putc ( 'z' ) ;
+//    com.putc ( '\n' ) ;
+    int value ( keypad.read(0x00) ) ;
+    value += keypad.read(0x01) << 8 ;
+//    com.printf( "%x\n" , value ) ;
+    if ( value == 0 ) return ;
+   
+    switch ( value )
+    {
+//        case 0 : return ;
+        case 0x1 : if ( pin_count != 0 ) -- pin_count ; pin_value /= 10 ; return ; // DELETE
+        case 0x10 : pin_value = pin_value * 10 ; break ; // 0
+        case 0x100 : pin_count = pin_value = 0 ; return ; // ENTER
+        case 0x2 : pin_value = pin_value * 10 + 1 ; break ;
+        case 0x20 : pin_value = pin_value * 10 + 2 ; break ;
+        case 0x200 : pin_value = pin_value * 10 + 3 ; break ;
+        case 0x4 : pin_value = pin_value * 10 + 4 ; break ;
+        case 0x40 : pin_value = pin_value * 10 + 5 ; break ;
+        case 0x400 : pin_value = pin_value * 10 + 6 ; break ;
+        case 0x8 : pin_value = pin_value * 10 + 7 ; break ;
+        case 0x80 : pin_value = pin_value * 10 + 8 ; break ;
+        case 0x800 : pin_value = pin_value * 10 + 9 ; break ;
+    }
+     if ( pin_count == 3 )
+    {
+//        com.printf ( "{%d:%d}\n" , pin_value , pin_count ) ;
+        com.printf ( "%d\n\r" , pin_value ) ;
+        pin_value = pin_count = 0 ;
+        return ;
+//         send pin 
+//        return ;
+    }
+//    com.printf ( "%d : %d\n" , pin_value , pin_count ) ;
+    ++ pin_count ; 
+//    com.printf(8080) ;
+//    int unsigned num = 8080 ;
+//    com.write ( ) ;
+}
+    
+int main ( ) 
+{
+    //  INIT
+    interrupt.fall ( & keypad_callback ) ;   
+    interrupt.mode ( PullUp ) ;
+
+    while(1) 
+    {
+        led1 = 1;
+        wait(0.2);
+        led1 = 0;
+        wait(0.2);
+    }
+}