11 years, 11 months ago.

New to all this

anyone know how to calibrate this program to give the reading of zero in all three axis at the start regardless of position because when the mbed on flat surface values still change, as well as give the values at quickly as possible once it's changed ??

kind regards Lincoln

1. include "mbed.h"
2. include "MMA7660FC.h"

1. define ADDR_MMA7660 0x98

MMA7660FC Acc(p28, p27, ADDR_MMA7660); Serial pc(USBTX, USBRX);

int main() {

float G_VALUE[100];

Acc.init();

pc.printf("Value reg 0x06: %#x", Acc.read_reg(0x06)); pc.printf("Value reg 0x08: %#x", Acc.read_reg(0x08)); pc.printf("Value reg 0x07: %#x", Acc.read_reg(0x07));

while(1) { float x=0, y=0, z=0;

Acc.read_Tilt(&x, &y, &z); pc.printf("Tilt x: %2.2f degree", x); pc.printf("Tilt y: %2.2f degree", y); pc.printf("Tilt z: %2.2f degree", z);

wait_ms(100); pc.printf("\n"); pc.printf("x: %1.3f g", G_VALUE[Acc.read_x()]); pc.printf("y: %1.3f g", G_VALUE[Acc.read_y()]); pc.printf("z: %1.3f g", G_VALUE[Acc.read_z()]); pc.printf("\n"); wait_ms(100);

}