Counter/Timer API reference

The counter/timer is one of the most used elements in sardana. A counter/timer represents an experimental channel which acquisition result is a scalar value.

A counter/timer has a state, and a value attributes. The state indicates at any time if the counter/timer is stopped, in alarm or moving. The value, indicates the current counter/timer value.

The other attributes are:

timer

name of the timer channel (proceeding from the same controller) to be used when the channel is acquired independently

special values:

__default - controller’s default timer
__self - the same channel acts like a timer
None - independent acquisition is disabled

integration time

integration time (in seconds) to be used when the channel is acquired independently

The available operations are:

start acquisition

starts to acquire the counter/timer

start_acquisition()

stop

stops the counter/timer acquisition in an orderly fashion

abort

stops the counter/timer acquisition as fast as possible

release

Release hung acquisition e.g. due to the hardware controller that got hung. You should first try stop/abort.