DAP Technology 1394, Operation Manual

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Filter/Trigger
216 Copyright © DapTechnology B.V., 2005-2019 - All Rights Reserved., 5/20/2019
Note that an Acknowledge will not end the Wait execution and thus is not detected. Note also that the
flow on the right does not do the same thing! This is because the first Jump item after the Wait item will
jump if the Wait was not ended because of a BusReset event. If the Wait was ended because of the
detection of packet, including a PhySelfID packet, then this Jump item will result in a jump to the Wait
again. And thus the Recorder will not be triggered if a PhySelfID has been detected.
· Action: When an Action item is executed, the indicated action will be performed and the next item will
be executed. When an Action item is selected, the actions to be performed can be selected in the
properties box.
·
Stop: When the Stop item is executed, the program will continuously execute the Stop item, effectively
stopping the program. The Sequencer will stay active and the red arrow indicating the item being
executed will continuously point to the Stop item.
The Stop item has no properties and the last Stop item can not be deleted. The last item of the flow
always should be the Stop item and thus you can not insert new items after the last Stop item. But Stop
items may be added in the middle of a flow to stop the Sequencer at any point. These Stop items can
be deleted and new items can be inserted after such a Stop item.
·
Repeat: All items enclosed in a Repeat-start and Repeat-end item are repeated the number of times
indicated in the Repeat-start item. This number can be changed in the properties box when the
Repeat-start is selected. The complete group of items to be repeated are inside the yellow colored box.
A repeat loop can be aborted by jumping out the loop. The Repeat-start will set a repeat-counter with
the number of times to executed the block. The Repeat-end will decrement the repeat-counter and will
jump to the item after the Repeat-start item when this count is not 0.
For example the following simple example will Trigger the Recorder when 100 Packets with an error are
detected or when one BusReset is detected.
Trigger Position
In this box you can specify the trigger position in the Recorder memory and you can enable a cyclic buffer
for the data before the trigger.
Stop recording when buffer full
Selecting this option (default) will cause the Recorder to stop when the Recorder buffer is completely
filled. The Recorder will also stop when the data after the trigger reached the the amount indicated by the
Max post-trigger size slider.
Cyclic pre-trigger buffer
Selecting this option will enable a cyclic buffer for the data recorded before the Recorder has been
triggered. The size of this cyclic pre-trigger buffer is indicated by the Max pre-trigger size slider. If the
recorded data reaches the amount indicated by this slider, the oldest data in the pre-trigger buffer will be
overwritten by the new data.
Before the Recorder is triggered, the total used Recorder memory will never be more than indicated by