User's Manual

WiFly GSX
www.rovingnetworks.com WiFlyRN171-um 2/23/2011
809 University Avenue • Los Gatos, CA 95032 •Tel [phone] •[e-mail]
~35~
Bit IO DIRECTION Function
0 GPIO-4 output Disable LED function so IO can be used as GPIO
1 GPIO-5 output Disable LED function so IO can be used as GPIO
2 GPIO-6 output Disable LED function so IO can be used as GPIO
3 Not Used
4 GPIO-4 output HIGH once associated/authenticated and have IP address.
5 GPIO-5 input Set HIGH to trigger TCP connection, LOW to disconnect.
6 GPIO-6 output HIGH when connected over TCP, LOW when disconnected.
NOTE. Bits 0-3 are mutually exclusive with the bits 4-6. i.e. 0x77 is an illegal value.
If the LEDs are disabled using bits 0, 1, 2 above, you can then use the show icommand to read these GPIO.
<2.21>show i will return
Port=30
For example, to use the alternate functions of the LEDs, the sequence of commands would be:
set sys iofunc0x70 // enable alternate function for GPIO 6, 5 and 4
save // store configuration
reboot // reboot the module
NOTE: Currently, the alternative GPIO functions are not available in adhoc mode.
10.5.2. Controlling connections with GPIO
In embedded applications it is useful to monitor and control the status of the TCP/IP connection. This can
be done by using the alternate function for GPIO-5 and GPIO-6.
With the alternate function for these GPIO set, the module will connect to the stored remote host IP address
and port when GPIO-5 is driven high and disconnect when driven low.
The TCP/IP connection status can be monitored by reading GPIO-6, high = connected, low = not connected.
Here is how to set the WiFly module to connect using GPIO-5 and GPIO-6
<2.20> set ip host <addr> // set the IP address of the remote host
<2.20> set ip remote <port> // set the IP port of the remote host
<2.20> set sys iofunc 0x60 // set alternate function for GPIO-5 and GPIO-6
<2.20> save // save settings in config file
<2.20> reboot // reboot the module
On the remote host run your application or other software that opens and listens on the <port>.