JOYSTICK.cpp

00001 #include "JOYSTICK.h"
00002 
00003 InterruptIn joystickU(A2);
00004 InterruptIn joystickD(A3);
00005 InterruptIn joystickL(A4);
00006 InterruptIn joystickR(A5);
00007 InterruptIn joystickC(D4);
00008 
00009 static int _joystickDataForISR = -1;
00010 
00011 static void _joystickBeep()
00012 {
00013     buzzerInstruction = BUZZER_INSTRUCTION_RINGING;
00014     buzzerDelay = JOYSTICK_BEEP_DELAY;
00015     buzzerCnt = JOYSTICK_BEEP_CNT;
00016     semaphoreBuzzerValues.release();
00017     semaphoreBuzzer.release();
00018 }
00019 
00020 static void _joystickPushedU()
00021 {
00022     if(semaphoreBuzzerValues.try_acquire() == true) {
00023         _joystickDataForISR = JOYSTICK_U;
00024         _joystickBeep();
00025     }
00026 }
00027 static void _joystickPushedD()
00028 {
00029     if(semaphoreBuzzerValues.try_acquire() == true) {
00030         _joystickDataForISR = JOYSTICK_D;
00031         _joystickBeep();
00032     }
00033 }
00034 static void _joystickPushedL()
00035 {
00036     if(semaphoreBuzzerValues.try_acquire() == true) {
00037         _joystickDataForISR = JOYSTICK_L;
00038         _joystickBeep();
00039     }
00040 
00041 }
00042 static void _joystickPushedR()
00043 {
00044     if(semaphoreBuzzerValues.try_acquire() == true) {
00045         _joystickDataForISR = JOYSTICK_R;
00046         _joystickBeep();
00047 
00048     }
00049 }
00050 static void _joystickPushedC()
00051 {
00052     if(semaphoreBuzzerValues.try_acquire() == true) {
00053         _joystickDataForISR = JOYSTICK_C;
00054         _joystickBeep();
00055 
00056     }
00057 }
00058 static void _joystickReleased(void)
00059 {
00060     _joystickDataForISR = -1;
00061 }
00062 
00063 
00064 // ====================================================================================
00065 
00066 void joystickInit(void)
00067 {
00068     printf("Init joysticks\r\n");
00069     joystickU.rise(_joystickPushedU);
00070     joystickD.rise(_joystickPushedD);
00071     joystickL.rise(_joystickPushedL);
00072     joystickR.rise(_joystickPushedR);
00073     joystickC.rise(_joystickPushedC);
00074 
00075     joystickU.fall(_joystickReleased);
00076     joystickD.fall(_joystickReleased);
00077     joystickL.fall(_joystickReleased);
00078     joystickR.fall(_joystickReleased);
00079     joystickC.fall(_joystickReleased);
00080 }
00081 
00082 
00083 int joystickDir(void)
00084 {
00085     return _joystickDataForISR;
00086 }