悬空鼠标设计与实现

#include "mbed.h"  

#include "rtos.h"  

  

#include "MMA8451Q.h"  

#include "USBMouse.h"  

#include "tsi_sensor.h"  

//MMA8451Q definiation  

#if   defined (TARGET_KL25Z) || defined (TARGET_KL46Z)  

  PinName const SDA = PTE25;  

  PinName const SCL = PTE24;  

#elif defined (TARGET_KL05Z)  

  PinName const SDA = PTB4;  

  PinName const SCL = PTB3;  

#elif defined (TARGET_K20D50M)  

  PinName const SDA = PTB1;  

  PinName const SCL = PTB0;  

#else  

  #error TARGET NOT DEFINED  

#endif  

  

#define MMA8451_I2C_ADDRESS (0x1d<<1)  

//  

#if defined (TARGET_KL25Z) || defined (TARGET_KL46Z)  

  #define ELEC0 9  

  #define ELEC1 10  

#elif defined (TARGET_KL05Z)  

  #define ELEC0 9  

  #define ELEC1 8  

#else  

  #error TARGET NOT DEFINED  

#endif  

  

MMA8451Q acc(SDA, SCL, MMA8451_I2C_ADDRESS);  

  

Ticker tick;  

PwmOut rled(LED1);  

PwmOut gled(LED2);  

PwmOut bled(LED3);  

  

TSIAnalogSlider tsi(ELEC0, ELEC1, 40);  

USBMouse mouse;  

//InterruptIn sw2(SW2);  

//thread pointer  

Thread *thread2;  

  

float x=0, y=0, z=0,t=0;  

  

//intruppt  

void sw2_press(void)  

{  

    thread2->signal_set(0x1);  

}  

  

void led_thread(void const *argument)  

{  

    while (true) {  

        rled = abs(1.0f - x -t);  

        gled = abs(1.0f - y -t);  

        bled = abs(1.0f - z -t);  

        Thread::wait(50);  

    }  }

void scan_thread(void const *argument)  

{  

    while (true) {  

        Thread::signal_wait(0x1);  

       // x = abs(acc.getAccX());  

       // y = abs(acc.getAccY());  

       // z = abs(acc.getAccZ());  

        x = acc.getAccX();  

        y = acc.getAccY();  

        z = acc.getAccZ();  

        t = tsi.readPercentage();  

    }  

}  

  

int main()  

{  

    Thread thread(led_thread);  

    thread2 = new Thread(scan_thread);  

  

  //  sw2.fall(&sw2_press);  

    tick.attach(&sw2_press,0.001);   //scan MMA8451Q ervery 0.01s  

    while (true) {  

        Thread::wait(1);  

        mouse.move( y*127,x*127);  

        printf("\r\n 0.1 seconds passed: %f,%f,%f,%f \r\n", x,y,z,t);  

        fflush(stdout);  

    }  

}