main.cpp

00001 #include "MMA8451Q.h"
00002 #include "mbed.h"
00003 #include "USBMouseKeyboard.h"
00004 
00005 #define MMA8451_I2C_ADDRESS (0x1d<<1)
00006 
00007 DigitalOut myled(LED1);
00008 MMA8451Q acc(PTE25, PTE24, MMA8451_I2C_ADDRESS);
00009 USBMouse joystick;
00010 AnalogIn ainX(PTB0);
00011 AnalogIn ainY(PTB1);
00012 Serial serialPort(PTD3, PTD2); // tx, rx
00013 int ledState = 0;
00014 int x = 128, y = 128, xOld = 0, yOld = 0;
00015 int updateFlag = 0;
00016 
00017 void invertLed() {
00018     if(ledState == 0) ledState = 1;
00019     else ledState = 0;
00020     myled = ledState;
00021 }
00022 
00023 void rxIrq() {
00024     serialPort.scanf("%d %d",&x,&y);
00025     invertLed();
00026     updateFlag = 1;
00027 }
00028 
00029 int main(void) {
00030     joystick.move(128, 128);
00031 
00032 
00033     // IF you want to get the data from serial port, uncomment this part
00034     // serial data rate is 9600 bps. send data to PTD2
00035     // give two integers separated by space. First one is X and the second one is Y.
00036     // 128 128 is at center, 0 0 is some corner and 255 255 is the diagonal corner.
00037 
00038     serialPort.attach(&rxIrq);
00039     while (true) {
00040         if(updateFlag) {
00041             updateFlag = 0;
00042             xOld = x;
00043             yOld = y;
00044             joystick.move(x, y);
00045             
00046         }
00047         else 
00048         {
00049             joystick.move(xOld, yOld);
00050         }
00051         wait(0.08);
00052     }
00053 
00054 
00055         // IF you are using the built-in acceleration sensor of the FRDM-KL25Z, uncomment this part
00056 /*
00057     while (true) {
00058         x = (acc.getAccXX() + 4096)/32;
00059         y = (acc.getAccYY() + 4096)/32;
00060         x = x + 128;
00061         y = y + 128;
00062         wait(0.1);
00063     }
00064 */
00065         
00066         
00067         
00068         // IF you are using the analog input of the FRDM-KL25Z, uncomment this part
00069 /*
00070     while (true) {
00071         x = ainX.read() * 256;
00072         y = ainY.read() * 256;
00073         x = x + 128;
00074         y = y + 128;
00075         wait(0.1);
00076     }
00077 */
00078 
00079 }