User manual

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www.rovingnetworks.com Version 1.0r 9/21/2012 55
RN-WIFLYCR-UM
Figure 11. Controlling Connections with the GPIO Pins
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Embedded
Microprocessor
WiFly
Module
GPIO4 = High by WiFly Module
GPIO5 = High by Microprocessor
GPIO6 = High by WiFly Module
Event: The WiFly module is associated with
an access point and has a valid IP address.
The WiFly module is instructed to open a TCP/IP
connection to the stored remote host.
Event: The WiFly module successfully opens the
TCP connection to the stored remote host.
This signal instructs the microprocessor that
it is OK to open a TCP connection.
Event: the microprocessor wants to open a
TCP connection to the stored remote host.
This signal instructs the microprocessor that
the TCP connection is open andit can begin
sending/receiving data over the TCP link. To
close the conenction, the microprocessor
drives GPIO5 low.