main.cpp

00001 #include <mbed.h>
00002 #include <mpr121.h>
00003 #include "strings.h"
00004 
00005 DigitalOut led1(LED1);
00006 
00007 InterruptIn interrupt0(p8); //interrupt pin for touch0
00008 InterruptIn interrupt1(p21); //interrupt for touch1
00009 
00010 // Setup the i2c bus on pins 9 and 10
00011 I2C i2c2(p9, p10); // I2C is used by both touch sensors
00012 I2C i2c(p28, p27); // I2C is used by both touch sensors
00013 
00014 Mpr121 touch1(&i2c, Mpr121::ADD_VSS);//setup touch1 address for vdd
00015 Mpr121 touch0(&i2c2, Mpr121::ADD_VSS);//setup touch0 address for vss
00016 
00017 
00018 //set serial port
00019 Serial device(p13, p14);  // tx, rx
00020 
00021  int key_code0=0;
00022  int key_code1=0;
00023 
00024 
00025 // Key hit/release interrupt routine for touch 0
00026 void fallInterrupt0() {
00027   key_code0=0;
00028   char i=0;
00029   int value=touch0.read(0x00);
00030   value +=touch0.read(0x01)<<8;
00031   // LED demo mod
00032   i=0;
00033   // puts key number out to LEDs for demo
00034   for (i=0; i<12; i++) {
00035   if (((value>>i)&0x01)==1) key_code0+=1<<i;
00036   }
00037 
00038 
00039 }
00040 
00041 
00042 //fall interrupt for touch1
00043 void fallInterrupt1() {
00044 
00045   key_code1=0;
00046   int i=0;
00047   int value=touch1.read(0x00);
00048   value +=touch1.read(0x01)<<8;
00049   // LED demo mod
00050   i=0;
00051   // puts key number out to LEDs for demo
00052   for (i=0; i<12; i++) {
00053   if (((value>>i)&0x01)==1) key_code1+=1<<i;
00054   }
00055   
00056 }
00057 
00058 
00059 
00060 int main() {
00061 //device.printf("Starting \r\n");
00062 
00063 char frompc=0;
00064   device.baud(115200); 
00065   interrupt0.fall(&fallInterrupt0);
00066   interrupt0.mode(PullUp);
00067   interrupt1.fall(&fallInterrupt1);
00068   interrupt1.mode(PullUp);
00069 
00070 
00071   while (1) {
00072 
00073 
00074   if(device.readable()){ //checks if ebox sends request
00075   frompc=device.getc();
00076   
00077   
00078     switch(frompc)//read character and check it
00079        {
00080         case '0':           //if character is '0' send key data from touch 0
00081             device.printf("%04d",key_code0);
00082             break;
00083         
00084         case '1':           //if character is '1' send key data from touch 1
00085             device.printf("%04d",key_code1);
00086             break;
00087            
00088         case 'A': //case for string value
00089             device.printf("%04d",Strings());
00090             break;
00091             
00092         default:
00093             break;
00094        }
00095        
00096   
00097   }
00098   }
00099 }