Keypad 4x3
A quick and dirty interface to a cheap and cheerful 4x3 Numeric keypad :
Library
Import Library:
http://mbed.org/projects/cookbook/svn/Keypad4x3/trunk
Import Example program:
http://mbed.org/projects/cookbook/svn/Keypad4x3/examples/Keypad4x3
- For details on how to use this in the compiler, see Importing Projects and Libraries in to the Compiler
Hello World
#include "mbed.h"
#include "Keypad4x3.h"
Keypad4x3 pad (p25,p27,p23,p26,p21,p22,p24);
Serial pc (USBTX,USBRX);
/*
27 C2 - Left
26 R1
25 C1
24 R4
23 C3
22 R3
21 R2 - Right
*/
int main(){
while(1){
int i = pad.read();
if (i<0xf){
pc.printf("%d \n",i);
}
}
}
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| Source Code of Keypad4x3.bin (LPC1768 LPC2368). |