Roving Networks WIFLY GSX Manuel d'utilisateur télécharger pdf (Page 55)

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RN-WIFLYCR-UM

Figure 11. Controlling Connections with the GPIO Pins

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.

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Roving Networks WIFLY GSX Manuel d'utilisateur Page 55