I am working on a patch to get data from a Polhemus Fastrak motion tracker.
It returns serial records of the form:
"01 9.44 -0.75 -0.62 -40.90 15.74 29.96"
in which the orientation angles are the last three values. The azimuth value, for example, is always in characters 25 through 31, so I am extracting it like this:
[ list of char bytes(
|
[packel 25 26 27 28 29 30 31]
| | | | | |
[sprintf %c%c%c%c%c%c%c]
|
[value \
which puts the correct value, -40.90, in the number at the bottom.
This works fine, but is there a better way?