![](/media/cache/img/default_profile.jpg.50x50_q85.jpg)
Iniversity work
main.cpp
- Committer:
- vinceP
- Date:
- 2017-09-02
- Revision:
- 2:8d0e48d38611
- Parent:
- 1:0630912bb400
- Child:
- 3:7db4d7f82176
File content as of revision 2:8d0e48d38611:
#include "mbed.h" #include "MMA8452.h" #include <math.h> Serial pc(USBTX, USBRX); SPI spiTest(p5, p6, p7,p8); MMA8452 acc(p9, p10, 100000); PwmOut led1(LED1); PwmOut led2(LED2); PwmOut led3(LED3); void calculateAngle(); void display(int number); int main() { int number = 10; char c[50]; while(1) { sprintf(c,"%f", number); pc.printf("x:%c \r\n",c[0]); pc.printf("x:%s \r\n",c); //calculateAngle(); wait(1); number--; } } void calculateAngle(int x,int y, int z){ //double x, y, z; float val = 180.0 / 3.1416; double calcule = (1-2*((x*x+y*y)/(x*x+y*y+z*z))); //acc.readXYZGravity(&x,&y,&z); /*x = -0.016; y = -0.877; z = 0.499;*/ led1 = abs(x); led2 = abs(y); led3 = abs(z); //float amplitude =sqrt(x*x+y*y+z*z); //float crossProductVector = sqrt(x*x+y*y); //float t = -1*asin(crossProductVector/amplitude)*val; //was z before //float e = 0.5*acos(1-2*((pow(x,2)+pow(y,2))/((pow(x,2)+pow(y,2)+pow(z,2)))))*val; float e2 = 0.5*acos(calcule)*val; pc.printf("x:%lf y:%lf z:%lf\r\n",x,y,z); pc.printf("angle: %lf\r\n",e2); } void display(int number){ char c[6]; //Explication de la fonction sprintf https://www.tutorialspoint.com/c_standard_library/c_function_sprintf.htm int test = sprintf(c,"%*.4Lf", number); //sprintf(c,"%ld", number); spiTest.write(0x76); pc.printf("c = %u\r\n", c[3] == '\0'); pc.printf("test = %d\r\n", test); switch(test) { case 1: spiTest.write(0x7E); spiTest.write(c[0]); break; case 2: spiTest.write(0x7D|c[0]); spiTest.write(0x7E|c[1]); break; case 3: break; } int n = sizeof(c)/sizeof(c[0]); pc.printf("n = %i\r\n", n); //control pour le décimal spiTest.write(0x77); // Decimal control command //valeur possible //0b00000001 = 1.234 //0b00000010 = 12.34 //0b00000100 = 123.4 spiTest.write(0b00000001); /*for (int i=4; i>=0; i--){ cs = 0; spiTest.write(c[i]); cs = 1; }*/ /*spiTest.write(c); ; spiTest.write(c[0]);*/ } /* int main() { //https://developer.mbed.org/handbook/SerialPC //https://developer.mbed.org/handbook/mbed-NXP-LPC1768-Getting-Started //pc.printf("Echoes back to the screen anything you type\n"); int nombre = 0; cs = 1; spiTest.frequency(250000); cs = 0; spiTest.write(0x81); //int t = spiTest.write(nombre); //pc.printf("Nombre = %X\r\n", t); cs = 1; while(1) { //uart.printf("%c",pc.getc()); wait(0.7); nombre++; display(nombre); pc.printf("Nombre = %X\r\n", nombre); if(nombre == 15){ return(0); } } } /* Ignore cette partie c'Est le lab int main() { //https://developer.mbed.org/handbook/SerialPC //https://developer.mbed.org/handbook/mbed-NXP-LPC1768-Getting-Started //pc.printf("Echoes back to the screen anything you type\n"); int nombre = 2; cs = 1; //uart.printf("%d",nombre); // Setup the spi for 8 bit data, high steady state clock, // second edge capture, with a 1MHz clock rate // spiTest.format(8,3); // spiTest.frequency(1000000); cs = 0; // Send 0x8f, the command to read the WHOAMI register int t = spiTest.write(0x8F); pc.printf("WHOAMI register = %X\r\n", t); // Send a dummy byte to receive the contents of the WHOAMI register //int whoami = spiTest.write(0x00); //printf("WHOAMI register = 0x%X\n", whoami); cs = 1; while(1) { //uart.printf("%c",pc.getc()); cs = 0; // Send 0x8f, the command to read the WHOAMI register pc.scanf("%d",&nombre); t = spiTest.write(nombre); pc.printf("WHOAMI register = %X\r\n", t); cs = 0; myled = 1; wait(0.2); myled = 0; wait(0.2); //pc.putc(pc.getc()); } } */