Ashley Mills / Mbed 2 deprecated MMA8452_Test

A test program for the MMA8452 accelerometer

Dependencies:   MMA8452 mbed

The test program runs a bunch of tests for the MMA8452 accelerometer.

What is below is not the test program, but an example to whet your appetite about the library.

#include "mbed.h"
#include "MMA8452.h"

int main() {
   Serial pc(USBTX,USBRX);
   pc.baud(115200);
   double x = 0, y = 0, z = 0;

   MMA8452 acc(p28, p27, 40000);
   acc.setBitDepth(MMA8452::BIT_DEPTH_12);
   acc.setDynamicRange(MMA8452::DYNAMIC_RANGE_4G);
   acc.setDataRate(MMA8452::RATE_100);
   
   while(1) {
      if(!acc.isXYZReady()) {
         wait(0.01);
         continue;
      }
      acc.readXYZGravity(&x,&y,&z);
      pc.printf("Gravities: %lf %lf %lf\r\n",x,y,z);
   }
}

An easy way to test that this actually works is to run the loop above and hold the MMA8452 parallel to the ground along the respective axis (and upsidedown in each axis). You will see 1G on the respective axis and 0G on the others.

MMA8452.lib@6:e3100f66ed6a, 2014-03-07 (annotated)

Committer:
ashleymills
Date:
Fri Mar 07 12:02:48 2014 +0000
Revision:
6:e3100f66ed6a
Parent:
5:756f9b157319
Child:
7:9b644d1c1405
Updated child and cleaned things up.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ashleymills 6:e3100f66ed6a 1 http://mbed.org/users/ashleymills/code/MMA8452/#d55e9d7eb17e