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hmc5883l: changed to standard heading and added declination

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Signed-off-by: Mihai Tudor Panu <mihai.t.panu@intel.com>
This commit is contained in:
Mihai Tudor Panu
2014-11-14 11:34:43 -08:00
parent 03318b3c4d
commit ea7b7a23fa
3 changed files with 48 additions and 5 deletions
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14
examples/hmc5883l.cxx
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@ -1,5 +1,6 @@
/*
* Author: Brendan Le Foll <brendan.le.foll@intel.com>
* Contributions: Mihai Tudor Panu <mihai.t.panu@intel.com>
* Copyright (c) 2014 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
@ -22,6 +23,7 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <unistd.h>
#include "hmc5883l.h"
int
@ -29,7 +31,17 @@ main(int argc, char **argv)
{
//! [Interesting]
upm::Hmc5883l* compass = new upm::Hmc5883l(0);
fprintf(stdout, "heading: %f\n", compass->heading());
int *pos;
compass->set_declination(0.2749); // Set your declination from true north in radians
while(true){
compass->update(); // Update the coordinates
pos = compass->coordinates();
fprintf(stdout, "coor: %5d %5d %5d ", pos[0], pos[1], pos[2]);
fprintf(stdout, "heading: %5.2f direction: %3.2f\n", compass->heading(), compass->direction());
sleep(1);
}
//! [Interesting]
return 0;