Technical Meeting #8: Software conceptual design

This meeting took place on Tuesday 15 June 2010. Attendees: JSY, DFB, EBS, MF, ADR

Conclusions

GUI should be separate process
- Allows display on console for best performance
- Can be started and stopped at user's convenience
Thermal control
- Scope of this software includes thermal control of camera enclosure
- Thermal control should be active continuously, day and night
  - Does this include Peltier?
- Separate process for thermal control (possibly with its own interface to the ISS) desireable, but requires dedicated I/O hardware
Frame acquisition and data processing should be a real-time task in *all* modes
- Not necessarily for FLC, depends on availability of RT camera data driver
Prefer to use floating point calculations for centroiding and servo
- EBS to find out if this means we must use Xenomai user-space real-time and hence tolerate context switches
ISS Interface
- Most commands (including mode switches) can be synchronous - avoids extra threads/callbacks
  - Exception would be any commands to move actuators
- Same process as frame acquisition/data processing
May need to account for future off-axis offsets when choosing initial position of subframe on FTT Mode start
- Prefer not to have ISS perform calculation