main.cpp

00001 // Joystick Library Example
00002 //
00003 // Reads the joystick x axis and fades green and red LEDs in response.
00004 // The blue LED is turned on while the pushbutton is pressed.
00005  
00006 #include "mbed.h"
00007 #include <Joystick.h>
00008  
00009 PwmOut led_R(LED1);
00010 PwmOut led_G(LED2);
00011 PwmOut led_B(LED3);
00012  
00013 Joystick j(PTB0, PTB1, PTB2);
00014  
00015 // call on joystick button release
00016 void jrise(void) {
00017     led_B = 1.0f;
00018 }
00019  
00020 // call on joystick button press
00021 void jfall(void) {
00022     led_B = 0.0f;
00023 }
00024  
00025 int main () {
00026     // setup
00027     led_R = 1.0f;
00028     led_G = 1.0f;
00029     led_B = 0.0f;
00030     joypos p;    // joystick position
00031     // attach joystick button interrupts
00032     j.rise(&jrise);
00033    j.fall(&jfall);
00034     float fade = 0.0f;
00035  
00036     // loop
00037     while (1) {
00038         p = j.read();
00039         fade = p.x;
00040         if (fade > 0.0) {
00041             led_R = 1.0f;
00042             led_G = 1.0f - (float)fade;
00043         } else if (fade < 0.0) {
00044             led_R = 1.0f + (float)fade;
00045             led_G = 1.0f;
00046         } else {
00047             led_R = 1.0f;
00048             led_G = 1.0f;
00049         }
00050         wait(0.01);
00051     }
00052 }