main.cpp

00001 /* Created by Mark Oehlberg 8/21/14
00002 
00003 Automatic keyboard app
00004 
00005 You are viewing the code for the future of keyboards.  You might as well
00006 smash your current keyboard, because once you use your KL25Z as a keyboard
00007 you will never look back.
00008 
00009 The Keyboard uses the touch slider and splits it in to two buttons, a left and a right button.
00010 The left Button types Pirates! and the right button types ROBOTS!
00011 
00012 The two USB ports on the board are labeled SDA and USB.  Use the port called USB to type.
00013 The LED will light on when pressed as well.
00014 
00015 */
00016 
00017 #include "mbed.h"
00018 #include "tsi_sensor.h"
00019 #include "USBKeyboard.h"
00020 
00021 /* A couple of boards have different pins connected */
00022 #if defined (TARGET_KL25Z) || defined (TARGET_KL46Z)
00023   #define ELEC0 9
00024   #define ELEC1 10
00025 #elif defined (TARGET_KL05Z)
00026   #define ELEC0 9
00027   #define ELEC1 8
00028 #else
00029   #error TARGET NOT DEFINED
00030 #endif
00031 
00032 Serial pc(USBTX, USBRX);//begins a serial console named pc
00033 USBKeyboard keyboard;
00034 
00035 
00036 int main(void) {
00037     bool justpressed = false;//variable used to 
00038     float lastpressed = 0.0;
00039     pc.baud(115200);//I apparently have to do this in the main loop
00040     DigitalOut led(LED2);//also called LED_GREEN
00041     TSIAnalogSlider tsi(ELEC0, ELEC1, 40);
00042     float i=0.0;
00043     while (true) {
00044         i=1.0 - tsi.readPercentage();//i=1.0000 when not pressed and will be between 0 and 1 when touched
00045         led = (i == 1.0) ? 1 : 0;//turn the light on if the slider is pressed.  Outputting Zero on this pin connects the cathode to ground.  The annode is connected to 3.3V
00046         if (justpressed && (abs(lastpressed-i)>0.1)){
00047             justpressed=false;
00048         }
00049         if ( 0.5 < i && i < 1.0 && not justpressed ){          
00050             keyboard.printf("Pirates!\r\n");
00051             lastpressed = i;
00052             justpressed = true;
00053             pc.printf(" Pirates - Trigger number=%f\n\r",i);
00054         }else if (0.0 < i && i <= 0.5 && not justpressed ){          
00055             keyboard.printf("ROBOTS!\r\n");
00056             lastpressed = i;
00057             justpressed = true;
00058             pc.printf(" ROBOTS!- Trigger number=%f\n\r",i);
00059         }
00060         //pc.printf("Reading:%f\tlastpressed:%f Justpressed:%d\n\r", i,lastpressed, justpressed);//debug code
00061     }
00062 }