File content as of revision 25:16a041dd21db:

/**** Vincent Labbé - labv2507  *****/
/**** Karan Kalsi -   *****/
#include "mbed.h"    
#include "MMA8452Q.h"

Serial pc(USBTX, USBRX); // tx, rx
SPI spi(p11,p12,p13);
DigitalOut cs(p14);
// Communication I2C
//I2C i2c(p9,p10); // sda, scl


void UARTInit()
{
 uint16_t usFdiv;   
    
 // Power up the UART3 it's disabled on powerup.
 LPC_SC->PCONP       |=  (1 << 25);
 
  // Enable the pins on the device to use UART3 
 LPC_PINCON->PINSEL1 |= (3 << 18);   /* Pin P0.25 used as TXD0 (Com0) */
 LPC_PINCON->PINSEL1 |= (3 << 20);   /* Pin P0.26 used as RXD0 (Com0) */
    
 // Setup the PCLK for UART3
 LPC_SC->PCLKSEL1    &= ~(3 << 18); // Clean all to 0
 LPC_SC->PCLKSEL1    |=  (1 << 18); // PCLK = CCLK

 // Word select 8-bit character length and set DLAB
 LPC_UART3->LCR  =   0x83;  // 0000 0000 1000 0011

//Baud rate calculation
 usFdiv = (SystemCoreClock / (16*9600));
 LPC_UART3->DLM  =  usFdiv / 256;
 LPC_UART3->DLL  =   usFdiv % 256;

 // Enable and reset UART3 FIFOs.
 LPC_UART3->FCR       = 0x7;
 
  // Enable the interrupt
 // NVIC_EnableIRQ(UART3_IRQn);
 
 // Init the UART3 RX interrupt
 // LPC_UART3->IER = 0x01;

 // Clear DLAB
 LPC_UART3->LCR &= ~(1 << 7);
 
}

char UART3Transmit(int out)
{
    LPC_UART3 -> THR = out;
    while(! (LPC_UART3->LSR & (0x01 << 0x06)));

    return 1;
}

int main() {
    
 //UARTInit();

     float x, y, z ;
    
     MMA8452Q acc(p9,p10,0x1d);     // acceleration object
    //i2c.frequency(100000);
    //int cmd[0] = 0x0D;
    //12c.write(addr,cmd,1,true);
    //i2c.read(addr,cmd,1);
     
        //Clear display SPI
         //cs = 0;
         //wait(0.1);
         //spi.write(0x76); // Clear display
         //cs = 1;
         //wait(0.1);
         //cs = 1;
         
         //clear display UART
         //UART3Transmit(0x76); // Clear display
    // while (true) {       
         x = acc.getAccX() ; 
         y = acc.getAccY() ;
         z = acc.getAccZ() ;
         printf("X[%.3f] Y[%.3f] Z[%.3f]\n",x, y, z) ;
         wait(0.1);

        int X = x * 1000; //Pour enlever floating point et garder une précision
        int Y = y * 1000;
        int Z = z * 1000;

        int angle = (1000-(((2*X*X+2*Y*Y)*1000/(X*X+Y*Y+Z*Z)))); //Calcul vectoriel pour calculer l'angle à l'horizontal
        
        pc.printf("avant acos = %d", angle);
        
        float ratioZaccel = angle/1000.0; //Remettre en floating point pour acos
        int resultatRAD = 500*acos((ratioZaccel)); //Reponse en RAD
        
        pc.printf("valeur rad new= %d", resultatRAD);
        int degree = resultatRAD * 18000/31400; //Tranfo degree
        pc.printf("valeur deg new = %d", degree);
        //int degreInt = degree;
        pc.printf("valeur deg new = %d", degree);
        
        // extracting digits
        int digit;
        int digits[4] = {0,0,0,0};
        int i = 0;
        while(degree > 0) {
        digit = degree % 10; //to get the right most digit
        digits[i]=digit;
        pc.printf("digit %d = %d, degree int: %d", i, digits[i], degree);
        degree /= 10;              //reduce the number by one digit
        ++i;
        }
         
        // Pour la communication UART
    
         //UART3Transmit(0x77); // Decimal control command
         //UART3Transmit(0x04);// Turn on decimal
         
         
         //UART3Transmit(digits[3]);
         //UART3Transmit(digits[2]);
         //UART3Transmit(digits[1]);
         //UART3Transmit(digits[0]);
         //UART3Transmit(0xA5);
         
         // Pour la communication SPI
        
         cs = 0;
        /* spi.write(0x77); // Decimal control command
         cs = 1;
         wait(0.01);
         cs = 0;
         spi.write(0x04);// Turn on decimal
         cs = 1;
         wait(0.01);
         cs = 0;
         spi.write(digits[3]);
         cs = 1;
         wait(0.01);
         cs = 0;
         spi.write(digits[2]);
         cs = 1;
         wait(0.01);
         cs = 0;
         spi.write(digits[1]);
         cs = 1;
         wait(0.01);
         cs = 0;
         spi.write(digits[0]);
         cs = 1; 
         */
         wait(0.1);
         spi.write(0x5);
         cs = 1;
         
    //    }
        
} 




/* communication SPI 
Serial pc(USBTX, USBRX); // tx, rx
I2C i2c(p9,p10);   

int main() {
    i2c.frequency(100000);
    char cmd[2] = {0,0};
    int addr = 0x5A;
    int data = 0xA4;
    cmd[0] = addr;
    cmd[1] = data;
    
while(1){
    i2c.write(0x3A,cmd,2);
    wait_ms(5);
    }
}
 */
 /*
Serial pc(USBTX, USBRX); // tx, rx
Serial mc(p9,p10);
int main() {
    
    int nombre;
    pc.printf("Entrez un nombre de 4 chiffres : ");
    pc.scanf("%d", &nombre);
    pc.printf("Votre numero entrez est le : %d", nombre);
    //mc.printf(nombre);
    mc.putc(nombre);
}
 */


/*
DigitalOut myled(LED2);

int main() {
    while(1) {
        myled = 1;
        wait(0.2);
        myled = 0;
        wait(0.2);
    }
}
*/