14: TSP command reference 2470 High Voltage SourceMeter Instrument
14-50 2470-901-01 Rev. A / May 2019
Also see
dataqueue.add() (on page 14-47)
dataqueue.CAPACITY (on page 14-48)
dataqueue.clear() (on page 14-48)
dataqueue.next() (on page 14-50)
Using the data queue for real-time communication (on page 9-10)
dataqueue.next()
This function removes the next entry from the data queue.
Type TSP-Link accessible
Affected by Where saved Default value
Usage
value = dataqueue.next()
value = dataqueue.next(timeout)
The next entry in the data queue
The number of seconds to wait for data in the queue
Details
If the data queue is empty, the function waits up to the timeout value.
If data is not available in the data queue before the timeout expires, the return value is nil.
The entries in the data queue are removed in first-in, first-out (FIFO) order.
If the value is a table, a duplicate of the original table and any subtables is made. The duplicate table
does not contain any references to the original table or to any subtables.
Example
for i = 1, 10 do
dataqueue.add(i)
end
print("There are " .. dataqueue.count
.. " items in the data queue")
while dataqueue.count > 0 do
x = dataqueue.next()
print(x)
end
print("There are " .. dataqueue.count
.. " items in the data queue")
Clears the data queue, adds ten entries, then
reads the entries from the data queue. Note that
your output may differ depending on the setting of
format.asciiprecision.
Output:
There are 10 items in the data queue
1
2
3
4
5
6
7
8
9
10
There are 0 items in the data queue
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