5.5.7. - The Settings File
The settings file is a binary file that contains consecutive data for each motor according to the following structure:
struct sav_mot {
long sm_pos; /* Current dial position */
float sm_off; /* Current user/dial offset */
double sm_low; /* Software low limit */
double sm_high; /* Software high limit */
};
The
settings
file must have write permission for everybody who runs spec,
as it is
updated every time someone
moves a motor or changes an offset or limit.
When spec starts out, it checks to see if there is
At present, there is no fail-safe
file locking mechanism to prevent more than
one program from writing to the
settings
file at the same time.
It is up to the users to make sure they are not running two
versions of spec on the same computer using the same diffractometer
or that they are not running
edconf
and moving motors with spec at the same time.