main.cpp

00001 #include "mbed.h"
00002  #include "USBJoystick.h"
00003  
00004  USBJoystick joystick;
00005 DigitalOut myled1(LED1);
00006 DigitalOut myled2(LED2);
00007 DigitalOut myled3(LED3);
00008 DigitalOut myled4(LED4);
00009 
00010 InterruptIn mybutton(USER_BUTTON);
00011 
00012 double tempo = 0.3; // LED blinking delay
00013 PinName pin = D7;
00014 // Change LEDs blinking frequency
00015 void change_blinking_frequency() {
00016     if (tempo == 0.3) // If leds have low frequency
00017         tempo = 0.1;  // Set the fast frequency
00018     else              // If leds have fast frequency
00019         tempo = 0.3;  // Set the low frequency
00020 }
00021 
00022         InterruptIn interrupt(pin);
00023         Timer timer;
00024 
00025 uint32_t interval;
00026 uint32_t channels[9];
00027 uint32_t channel;
00028 bool done=false;
00029 
00030 void rise()
00031 {
00032     interval=timer.read_us();
00033     if(interval > 3000)
00034     {
00035         done = true;
00036         channel=0;
00037         return;
00038     }
00039     int length = interval - 1000;
00040     if(length < 0)
00041         length = 0;
00042     else if(length>1023)
00043         length=1023;
00044     length /= 4;
00045     length -= 127;
00046     
00047     channels[channel] = length;
00048     channel++;
00049 }
00050 
00051 int main() {
00052     // All LEDs are OFF
00053     myled1 = 0;
00054     myled2 = 0;
00055     myled3 = 0;
00056     myled4 = 0;
00057 
00058     // Change LEDs blinking frequency when button is pressed
00059     mybutton.fall(&change_blinking_frequency);
00060     timer.start();
00061     interrupt.rise(&rise);
00062 //    interrupt.fall(this, &RadioChannel::fall);
00063 uint8_t count=0;
00064     while(1) {
00065         if(done)
00066         {
00067             joystick.update(count, 0, channels[0], 0, 0, 0);
00068             done = false;
00069         }
00070          joystick.update(count, 0, channels[0], 0, 0, 0);
00071         count++;
00072         wait(0.001);
00073     }
00074 }