I am including two sets of data of spinning the micromag in circles on a flat surface. The first set is at ps2048 resolution. The second set is at ps32 resolution. I don’t believe the data is accurate, but I don’t know why. At the end of each set, I have the min,max,offset, and range as well. By referencing the PNI multipoint calibration document I tried to get the heading out of these values (after offsetting/ranging) and it seems they are always jumping in large ranges? i.e. as the device spins, the extrapolated heading goes from 225 to -45 to 315 in the ps2048 case, and 119 to 159 to 199 to 239 to 279 in the ps32 case. I was expecting something along the lines of 0-360 in much smaller steps.
The numbers are quite varied from my setup on an atmega168, so I am wondering if there is an issue with SPI setup? or the winarm toolchain? I am doing the high/low byte shift/addition - weird.
ps2048
x y z b
705 65127 969
705 65126 971
704 65127 971
703 65126 968
704 65126 968
703 65126 967
705 65126 970
704 65125 970
704 65127 970
705 65128 969
705 65126 966
705 65126 969
704 65126 969
704 65126 971
704 65125 969
705 65126 968
704 65126 968
705 65126 970
703 65126 970
702 65126 968
702 65127 964
707 65135 972
717 65155 970
727 65178 972
738 65202 979
746 65226 978
755 65246 982
763 65272 983
771 65296 986
776 65318 986
781 65337 988
785 65359 989
789 65385 990
792 65408 990
793 65424 994
796 65446 996
795 65469 999
797 65496 999
796 65518 1001
795 3 1001
793 24 1002
789 49 1004
786 70 1005
782 99 1007
776 120 1010
770 144 1010
762 171 1011
755 194 1008
746 218 1014
737 239 1012
726 264 1014
716 285 1015
705 307 1015
693 326 1016
682 341 1018
674 356 1017
666 369 1019
658 382 1017
647 396 1017
637 409 1018
627 421 1019
619 433 1018
605 447 1019
594 459 1019
583 471 1019
577 479 1019
566 486 1019
557 498 1019
541 512 1019
521 529 1018
500 544 1019
479 558 1018
463 570 1016
442 583 1016
418 597 1017
392 614 1014
359 629 1014
330 642 1014
307 651 1011
279 660 1011
248 670 1010
217 677 1006
187 684 1008
154 688 1004
122 691 1003
96 694 999
70 694 1000
36 695 996
3 694 996
65509 693 992
65482 687 991
65451 684 989
65427 680 987
65404 674 986
65380 666 983
65353 658 982
65321 647 981
65294 635 976
65261 621 973
65228 604 968
65193 583 964
65154 557 961
65118 531 956
65084 504 951
65051 473 948
65023 443 944
64997 412 939
64973 381 939
64950 347 936
64929 313 928
64907 272 926
64889 233 921
64874 195 917
64863 170 915
64855 137 913
64845 94 912
64837 43 905
64831 65532 900
64828 65489 901
64829 65439 897
64832 65400 893
64838 65357 892
64845 65318 889
64856 65277 886
64867 65239 887
64884 65192 885
64906 65143 878
64927 65101 880
64951 65068 880
64973 65035 880
65001 64999 880
65034 64959 881
65069 64930 880
65096 64905 882
65126 64882 881
65152 64863 882
65180 64846 878
65210 64830 880
65238 64815 885
65261 64803 885
65288 64792 888
65319 64779 885
65357 64766 890
65396 64756 894
65439 64747 892
65458 64745 898
65467 64743 897
65501 64740 901
6 64736 903
47 64735 903
92 64737 908
142 64743 911
196 64755 916
249 64769 922
308 64789 927
363 64815 931
416 64842 936
463 64869 941
500 64896 944
534 64924 949
570 64958 954
607 65002 958
645 65047 964
677 65092 968
700 65128 973
719 65167 976
738 65204 980
756 65259 984
772 65307 988
780 65354 992
789 65398 993
793 65437 997
796 65499 1002
793 13 1005
791 22 1006
791 32 1005
785 84 1008
779 107 1010
774 133 1010
761 178 1012
750 214 1013
733 252 1015
720 278 1016
704 313 1017
682 350 1016
657 389 1019
629 425 1019
599 459 1019
568 493 1020
531 526 1017
491 555 1018
451 579 1017
413 600 1017
398 607 1016
398 607 1018
399 606 1018
402 603 1019
407 596 1020
419 592 1019
432 578 1020
470 549 1023
518 512 1023
571 462 1023
621 407 1023
663 347 1021
699 286 1020
731 224 1017
755 158 1013
776 82 1011
788 9 1006
793 65461 999
788 65374 995
775 65299 988
757 65232 982
734 65167 976
702 65107 967
667 65049 963
625 64996 958
585 64955 953
545 64914 947
495 64873 939
440 64839 933
386 64809 928
343 64791 924
297 64773 919
241 64756 915
178 64743 910
126 64739 905
73 64737 902
16 64736 896
65487 64743 894
65425 64754 888
65370 64769 887
65317 64787 885
65262 64812 883
65208 64841 879
65162 64871 881
65110 64911 877
65061 64958 879
65014 65004 878
64972 65057 878
64938 65110 882
64908 65164 882
64883 65221 886
64862 65276 887
64845 65339 889
64833 65406 894
64828 65477 899
64827 6 902
64833 60 909
64842 122 913
64859 180 916
64875 233 922
64898 281 928
64921 323 932
64942 361 936
64966 394 939
64995 431 943
65030 474 951
65073 515 955
65119 552 962
65170 588 969
65218 613 973
65282 646 981
65350 666 987
65415 683 992
65484 691 998
15 694 1000
79 692 1006
132 686 1009
193 676 1012
243 663 1014
292 647 1017
334 631 1019
370 613 1019
407 592 1020
446 570 1022
484 543 1023
523 511 1024
562 476 1024
599 438 1025
629 401 1024
659 360 1023
685 317 1022
707 278 1021
726 243 1019
740 207 1018
752 172 1016
763 137 1015
773 100 1013
780 64 1010
787 25 1008
791 65517 1005
792 65468 1000
791 65428 997
787 65386 996
780 65351 993
775 65318 991
767 65280 988
754 65241 985
738 65195 980
717 65147 975
696 65107 971
672 65067 966
644 65025 960
610 64983 955
574 64943 950
533 64910 946
498 64885 942
469 64863 940
432 64841 936
394 64816 931
343 64793 925
288 64773 921
238 64758 917
186 64749 913
143 64742 908
105 64739 905
67 64738 904
29 64738 901
65526 64741 899
65479 64746 896
65433 64755 893
65385 64766 890
65339 64781 887
65295 64799 886
65253 64817 885
65218 64835 882
65189 64852 882
65159 64872 881
65126 64896 880
65092 64926 880
65056 64957 879
65024 64992 880
64994 65031 881
64963 65071 881
64936 65110 882
64912 65152 883
64892 65194 884
64874 65242 887
64859 65291 888
64846 65335 889
64838 65376 894
64833 65415 895
64830 65455 899
64828 65505 901
64832 30 906
64839 86 910
64849 129 913
64861 172 917
64874 213 920
64889 258 927
64911 304 930
64938 346 935
64964 390 941
64997 432 945
65032 473 950
65074 513 955
65129 561 964
65199 601 973
65266 633 978
65332 658 984
65396 676 989
65467 690 995
65533 692 1000
61 693 1004
117 689 1007
165 681 1009
209 671 1013
248 662 1013
283 652 1014
289 650 1015
301 647 1014
313 641 1017
319 641 1016
321 639 1016
336 632 1018
351 625 1017
365 618 1017
381 610 1019
397 604 1018
409 595 1020
421 589 1019
436 581 1018
451 570 1019
470 556 1020
490 542 1022
507 529 1021
524 515 1021
542 500 1022
559 486 1022
576 468 1022
592 451 1022
608 432 1021
629 408 1021
645 385 1021
659 367 1021
671 349 1021
685 328 1021
697 306 1021
707 287 1020
715 266 1020
727 245 1019
735 230 1019
738 223 1018
739 224 1015
739 229 1013
736 243 1015
725 269 1016
710 298 1018
691 335 1016
666 376 1018
642 408 1018
613 446 1020
575 488 1020
530 525 1020
488 557 1018
450 582 1018
410 603 1016
372 624 1016
330 644 1014
276 665 1011
216 680 1007
159 688 1006
106 694 1002
41 695 998
65507 690 994
65436 678 988
65385 669 984
65343 654 982
65294 634 975
65230 601 968
65168 561 962
65097 507 954
65044 459 948
64997 408 942
64961 361 938
64929 314 931
64903 264 926
64881 212 920
64863 163 917
64850 119 913
64838 68 909
64832 15 906
64827 65506 902
64827 65454 897
64829 65415 895
64835 65365 894
64846 65306 890
64859 65252 887
64878 65203 886
64897 65155 884
64919 65115 882
64945 65074 880
64969 65037 880
64998 65000 880
65033 64960 880
65073 64923 880
65106 64895 880
65145 64867 882
65183 64841 883
65225 64816 883
65277 64793 885
65331 64771 889
65390 64754 892
65454 64743 896
65522 64736 902
60 64736 907
127 64742 911
182 64751 915
238 64764 921
295 64782 925
344 64802 929
385 64822 932
422 64842 935
453 64861 939
490 64887 944
533 64927 947
577 64964 954
607 65002 960
650 65055 965
679 65089 969
691 65109 970
705 65132 972
716 65148 975
723 65169 976
734 65196 978
747 65226 983
757 65254 983
765 65284 986
776 65323 990
783 65365 994
790 65395 996
793 65428 997
795 65467 999
795 65502 1003
794 65534 1003
790 36 1005
786 72 1007
778 118 1010
3 3 877 min
65533 65534 1025 max
32766.5 32767 512.5 offset
65530 65531 148 range
ps32
x y z
65527 7 14
65528 7 15
65528 7 14
65528 7 15
65528 7 14
65528 7 15
65528 7 15
65528 7 14
65528 7 14
65528 7 15
65528 7 15
65528 7 14
65528 7 14
65528 7 14
65527 7 14
65528 7 14
65528 8 15
65528 8 15
65528 8 15
65528 8 14
65529 8 15
65529 9 15
65529 9 15
65529 9 15
65529 9 15
65529 9 15
65529 9 15
65529 8 15
65530 8 14
65530 8 14
65529 8 15
65530 9 15
65530 9 15
65530 9 15
65531 9 14
65531 10 15
65532 10 15
65532 10 14
65533 10 15
65533 9 14
65533 10 14
65533 11 15
65533 11 14
65534 11 15
65533 11 15
65533 11 15
65534 11 15
65535 11 15
65535 11 15
65535 11 15
0 11 15
0 11 15
1 11 15
1 11 15
1 11 15
2 11 15
2 11 15
2 11 15
2 11 15
3 11 15
3 11 15
4 11 15
4 11 15
5 11 15
5 10 15
6 9 15
5 10 15
6 10 15
6 10 15
5 9 15
6 9 15
6 9 15
7 9 15
7 8 15
8 8 16
8 7 16
8 9 16
9 9 15
9 9 16
9 8 15
10 8 15
10 8 15
9 7 15
10 7 16
10 6 15
11 6 15
10 6 16
10 5 15
10 5 16
11 4 15
11 4 15
11 4 16
11 5 15
11 3 15
11 3 15
12 4 15
12 3 15
12 3 15
12 3 15
12 2 15
12 2 15
12 1 15
13 1 15
13 1 15
12 0 15
13 65535 15
13 1 15
13 0 15
13 0 15
12 0 15
13 65535 15
13 65535 15
12 65535 15
13 65534 15
12 65533 15
12 65533 15
12 65533 15
12 65532 15
12 65531 15
12 65532 15
12 65532 15
12 65531 15
12 65532 14
12 65531 14
11 65531 15
11 65531 14
11 65530 14
11 65530 14
10 65529 14
10 65529 15
10 65528 15
11 65529 14
10 65527 15
10 65528 15
9 65527 15
9 65527 15
9 65527 15
9 65527 15
9 65527 15
9 65526 15
8 65526 14
8 65527 15
7 65526 14
7 65525 14
6 65525 14
6 65525 14
6 65524 14
5 65524 14
6 65524 14
5 65524 14
5 65524 14
5 65523 14
5 65523 14
4 65523 14
4 65523 14
4 65524 14
3 65523 14
2 65523 14
2 65524 14
1 65523 14
2 65523 14
1 65523 14
1 65523 14
1 65523 14
0 65523 14
65535 65524 14
65534 65524 14
65534 65524 14
65534 65524 14
65534 65524 14
65533 65523 14
65533 65523 14
65532 65524 14
65532 65525 14
65531 65524 14
65531 65525 14
65530 65525 14
65530 65525 14
65530 65525 14
65529 65527 14
65529 65526 14
65529 65527 14
65529 65527 14
65529 65527 14
65528 65527 14
65528 65527 14
65528 65529 14
65528 65527 14
65528 65528 14
65527 65528 14
65527 65527 14
65527 65528 14
65527 65528 14
65526 65529 14
65526 65529 14
65526 65529 14
65525 65530 14
65526 65530 14
65525 65531 14
65525 65531 14
65526 65531 14
65525 65531 14
65525 65532 14
65525 65531 14
65525 65532 14
65525 65533 14
65525 65533 14
65525 65534 13
65526 65535 14
65525 65535 14
65525 0 14
65525 65535 14
65525 0 14
65525 0 14
65525 1 14
65525 1 14
65525 2 14
65525 3 14
65525 3 14
65525 4 14
65525 5 14
65525 5 14
65525 4 14
65526 4 14
65526 5 14
65526 5 14
65527 6 14
65527 7 14
65527 7 14
65528 7 15
65528 8 15
65529 9 15
65529 9 14
65529 9 15
65529 8 15
65529 8 14
65529 9 15
65530 9 14
65531 9 14
65531 9 14
65532 10 14
65532 10 14
65533 10 14
65533 11 14
65534 11 14
65533 11 14
65534 11 15
65535 11 15
0 11 15
0 11 15
1 11 15
1 11 15
2 11 15
2 11 15
3 11 15
3 11 15
4 11 15
5 11 15
5 10 15
5 10 15
6 10 15
6 9 15
6 9 16
7 8 15
8 9 15
8 9 15
9 9 16
9 7 16
10 7 15
10 7 15
9 5 15
10 5 15
10 5 16
11 4 15
11 5 15
11 4 15
12 3 15
12 3 15
12 3 15
12 1 15
13 1 15
13 0 15
13 0 15
13 0 15
13 65535 15
12 65535 15
13 65534 15
12 65533 15
12 65532 15
12 65531 15
12 65532 15
12 65531 15
11 65531 14
11 65530 15
11 65529 14
10 65529 14
10 65528 14
10 65528 14
10 65528 15
10 65527 14
10 65527 15
11 65528 15
9 65527 15
9 65527 15
10 65527 15
9 65527 15
9 65527 15
9 65526 15
8 65527 14
8 65526 15
6 65526 15
7 65525 14
7 65525 14
6 65524 14
6 65524 14
5 65524 14
5 65524 14
5 65523 14
4 65523 14
4 65524 14
3 65523 14
2 65523 14
1 65523 14
1 65523 14
1 65524 14
1 65523 14
0 65523 14
65535 65523 14
65534 65523 14
65533 65524 14
65534 65523 14
65533 65523 14
65533 65523 14
65532 65524 14
65532 65524 14
65531 65524 14
65530 65525 14
65530 65525 14
65529 65525 14
65529 65526 14
65529 65526 14
65529 65527 14
65529 65527 14
65529 65526 14
65528 65527 14
65528 65527 14
65528 65528 14
65527 65527 14
65527 65528 14
65526 65528 14
65526 65529 14
65526 65529 14
65526 65530 14
65525 65530 13
65525 65531 14
65526 65532 14
65525 65533 14
65525 65533 14
65525 65532 14
65525 65532 14
65525 65533 14
65525 65533 14
65525 65534 14
65525 65535 14
65525 65535 14
65525 65534 14
65525 1 14
65526 0 14
65525 65535 14
65525 0 13
65526 1 14
65525 1 14
65525 2 14
65525 2 14
65525 3 14
65525 3 14
65525 3 14
65526 4 14
65525 4 14
65525 5 14
65525 4 14
65526 4 14
65526 5 14
65526 5 14
65526 6 14
65527 6 14
65527 6 14
65527 7 14
65527 7 14
65528 7 15
65528 8 14
65528 8 15
65529 9 14
65529 9 15
65529 9 15
65529 9 15
65530 8 15
65529 8 15
65529 9 15
65530 9 15
65530 9 14
65531 10 15
65532 10 15
65532 10 15
65533 10 14
65533 11 14
65533 11 14
65533 11 15
65533 11 14
65534 11 15
65535 11 15
65535 11 15
0 11 15
1 12 15
1 11 15
1 11 15
1 11 15
2 11 15
2 11 15
2 11 15
3 11 15
4 11 15
4 11 15
5 11 15
5 10 15
5 10 15
6 10 15
6 9 15
6 9 15
6 9 15
7 8 15
8 9 15
8 7 15
9 9 15
9 9 15
9 8 15
9 7 15
10 7 15
10 6 15
11 5 15
10 5 15
10 5 15
11 4 15
11 4 15
11 4 15
11 5 15
12 4 15
12 3 15
12 2 15
12 2 15
12 1 15
12 0 15
13 65535 15
13 0 15
13 65535 15
13 65535 15
13 65535 15
13 65533 15
13 65533 15
12 65532 15
12 65531 15
12 65533 15
12 65532 14
11 65531 14
11 65530 14
11 65530 14
11 65529 15
10 65529 14
10 65528 14
9 65528 15
10 65528 15
9 65527 15
9 65527 15
9 65527 15
9 65527 15
8 65527 15
8 65526 15
8 65526 15
7 65525 15
7 65525 14
6 65525 14
6 65525 14
6 65524 14
5 65524 14
6 65524 14
5 65524 14
5 65524 14
5 65523 14
5 65523 14
4 65523 14
3 65523 14
3 65524 14
2 65523 14
1 65523 14
2 65524 14
1 65524 14
1 65523 13
1 65523 14
0 65524 14
65535 65523 14
0 0 13 min
65535 65535 16 max
32767.5 32767.5 8 offset
65535 65535 3 range