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11: Monitor
xPico® Wi-Fi® Embedded Device Server User Guide 61
Polling
Periodically your xPico Wi-Fi will send commands to
query information from your serial device.
STEP 1 - STRATEGY
Explore your serial device and determine your
strategy for eliciting all of the desired data with the
fewest message Commands.
STEP 2 - SETUP
Use Monitor Explorer or directly configure settings in Monitor Poll Configuration. For each
message Command, determine an appropriate Timeout and possibly shorten it via a Length and/
or End Character.
STEP 3 - TEST
Testing is rapid and simplified using Monitor Explorer.
You can see the serial device response right in your
browser window.
Sample Configuration
Use a single "show" command to elicit the
EDS2100 device status.
In Monitor Poll Configuration, set Message 1
Command to "show[0x0d]".
Testing with this, notice that the default Timeout of
100 milliseconds is too fast-we sometimes poll
before all the data comes out. So we set Timeout
to 200 milliseconds for stable operation.
Note: It is possible to poll with more than one message Command. They will be sent
sequentially, and you will define distinct filtering and data mining steps for each.
Figure 11-8 Monitor Polling (1 of 2)
Figure 11-9 Monitor Polling (2 of 2)