Testing the LSM9DS1 Module

Note that the module is still under construction at this point.

Setup a project in WebIDE

WebIDE will use a projects folder with the LSM9DS1.js placed in the Modules sub-folder.
In WebIDE click on the gear icon in the upper right corner and then click on Project. You can then create a project if you haven’t done so already. When you “require” a module, the project module subfolder is part of the search chain.

Magtest.js

//Magtest.js 30Apr2017
////////////////////////////////////
function testMag(){
var temp;
var i;
W.Mwrite(W.MREGval.TEMP_COMP,1);
/* ON OMZ
0 = Low-power mode
1 = Medium-performance mode
2 = High-performance mode
3 = Ultra-high performance
*/
W.Mwrite(W.MREGval.OM,3);
W.Mwrite(W.MREGval.OMZ,3);
/* DO
0 =  0.625 Hz.
1= 1.25
2 = 2.5
3 = 5
4 = 10
5 = 20
6 = 40
7 = 80
*/
W.Mwrite(W.MREGval.DO,3);//5 Hz
//W.Mwrite(W.MREGval.DO,7);//80 Hz
W.Mwrite(W.MREGval.FAST_ODR,0);
W.Mwrite(W.MREGval.ST,0);
/* FS
Full scale
0 = ± 4 gauss
1 = ± 8 gauss
2 = ± 12 gauss
3 = ± 16 gauss
*/
W.Mwrite(W.MREGval.FS,1);
W.Mwrite(W.MREGval.MD,0);//continuous convert
//W.Mwrite(W.MREGval.MD,1);//single convert
W.Mwrite(W.MREGval.BLE,0);//Endian of data
//W.Mwrite(W.MREGval.BDU,0);//continuous­ update
W.Mwrite(W.MREGval.BDU,1);//block update
W.Mwrite(W.MREGval.FAST_READ,0);
}//end testMag

function displayMag(){
var m;
if(W.Mread(W.MREGval.ZYXDA)){  //new data available
// console.log("Mag data available");
 m=W.mReadBytes(W.MagRegs.OUT_X_L_M, 6);
 console.log(" "+m[0]+","+m[1]+","+m[2]);
}//endif
}//end displayMag


//Configuration
//The I2C pins that the LSM9D01 is connected to
//PICO I2C pins
//IC1  sda=B7  scl=B6
//IC1  sda=B9  scl=B8  shim pins
//IC3  sda=B4  scl=A8
//IC2  sda=B3  scl=B10
var W;
function start(){
//  console.log("start");
 I2C3.setup({ scl :A8, sda: B4} );
//console.log(I2C3);
 var xgAddress= 0x6B;// Would be 0x1C if SDO_M is LOW
 var mAddress= 0x1e;// Would be 0x6A if SDO_AG is LOW 
 W=require("LSM9DS1").connect(I2C3,xgAddr­ess,mAddress);
// W=new LSM9DS1(I2C3,xgAddress,mAddress);
 W.run();//Get it started
 W.showAG();
 W.showMag();
 testMag();
 setInterval(function () {
  displayMag();
 }, 200);
}//end start

//function startPgm(){
//Wait for program to load
setTimeout(function () {
 start();
}, 1000);
//}//end startPgm

Some raw output of the magnetometer, X, Y, and Zaxis

( note units are raw counts and no zero offset has been applied )

700,-950,-802
 678,-944,-802
 703,-947,-806
 700,-936,-825
 678,-945,-807
 677,-948,-830
 675,-938,-826
 686,-944,-830
 685,-964,-831
 686,-949,-838
 695,-938,-848
 672,-975,-855
 684,-960,-827
 679,-962,-841
 680,-968,-845
 672,-943,-846
>clearInterval();
=undefined
> 

The module needs code to read the accelerometer and gyro data.

2 Attachments

• LSM9DS1.js
• Magtest.js