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Dependents: Wi-Go-MagnetometerTest EE202A_HW1_MH serialtoxively mbed_nanosec_timer ... more
Revision 8:d13d9ccddff7, committed 2014-05-09
- Comitter:
- SomeRandomBloke
- Date:
- Fri May 09 18:02:38 2014 +0000
- Parent:
- 7:0f45239e157a
- Commit message:
- removed .orig file
Changed in this revision
| MAG3110.cpp.orig | Show diff for this revision Revisions of this file |
--- a/MAG3110.cpp.orig Fri May 09 18:01:36 2014 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,118 +0,0 @@
-
-#include "MAG3110.h"
-#include "mbed.h"
-
-/******************************************************************************
- * Constructors
- ******************************************************************************/
-MAG3110::MAG3110(PinName sda, PinName scl): _i2c(sda, scl),
- _i2c_address(0x1D), _pc(NULL), _debug(false)
-{
- begin();
-}
-
-MAG3110::MAG3110(PinName sda, PinName scl, Serial *pc): _i2c(sda, scl),
- _i2c_address(0x1D), _pc(pc), _debug(true)
-{
- begin();
-}
-
-void MAG3110::begin()
-{
- char cmd[2];
-
- cmd[0] = MAG_CTRL_REG2;
- cmd[1] = 0x80;
- _i2c.write(_i2c_address, cmd, 2);
-
- cmd[0] = MAG_CTRL_REG1;
- cmd[1] = MAG_3110_SAMPLE80+MAG_3110_OVERSAMPLE2+MAG_3110_ACTIVE;
- _i2c.write(_i2c_address, cmd, 2);
-
- // No adjustment initially
- _avgX = 0;
- _avgY = 0;
-}
-
-// Read a single byte form 8 bit register, return as int
-int MAG3110::readReg(char regAddr)
-{
- char cmd[1];
-
- cmd[0] = regAddr;
- _i2c.write(_i2c_address, cmd, 1);
-
- cmd[0] = 0x00;
- _i2c.read(_i2c_address, cmd, 1);
- return (int)( cmd[0]);
-}
-
-
-// read a register per, pass first reg value, reading 2 bytes increments register
-// Reads MSB first then LSB
-int MAG3110::readVal(char regAddr)
-{
- char cmd[2];
-
- cmd[0] = regAddr;
- _i2c.write(_i2c_address, cmd, 1);
-
- cmd[0] = 0x00;
- cmd[1] = 0x00;
- _i2c.read(_i2c_address, cmd, 2);
- return (int)( (cmd[1]|(cmd[0] << 8))); //concatenate the MSB and LSB
-}
-
-
-float MAG3110::getHeading()
-{
- int xVal = readVal(MAG_OUT_X_MSB);
- int yVal = readVal(MAG_OUT_Y_MSB);
- return (atan2((double)(yVal - _avgY),(double)(xVal - _avgX)))*180/PI;
-}
-
-void MAG3110::getValues(int *xVal, int *yVal, int *zVal)
-{
- *xVal = readVal(MAG_OUT_X_MSB);
- *yVal = readVal(MAG_OUT_Y_MSB);
- *zVal = readVal(MAG_OUT_Z_MSB);
-}
-
-
-void MAG3110::setCalibration(int minX, int maxX, int minY, int maxY )
-{
- _avgX=(maxX+minX)/2;
- _avgY=(maxY+minY)/2;
-}
-
-
-
-void MAG3110::calXY(PinName pin, int activeValue )
-{
- DigitalIn calPin(pin);
- int tempXmax, tempXmin, tempYmax, tempYmin, newX, newY;
-
-
- // Wait for Button Press and Release before beginning calibration
- while(calPin != activeValue) {}
- while(calPin == activeValue) {}
-
-
- // Read initial values of magnetomoter - read it here to create a slight delay for calPin to settle
- tempXmax = tempXmin = readVal(MAG_OUT_X_MSB);
- tempYmax = tempYmin = readVal(MAG_OUT_Y_MSB);
-
- // Update min and max values until calPin asserted again
- while(calPin != activeValue) {
- newX = readVal(MAG_OUT_X_MSB);
- newY = readVal(MAG_OUT_Y_MSB);
- if (newX > tempXmax) tempXmax = newX;
- if (newX < tempXmin) tempXmin = newX;
- if (newY > tempYmax) tempYmax = newY;
- if (newY < tempYmin) tempYmin = newY;
- }
-
- setCalibration( tempXmin, tempXmax, tempYmin, tempYmax );
-
-}
-
NXP MAG3110 Magnetometer