Roving Networks WIFLY GSX Manual de usuario descargar pdf (Pagina 42)

WiFly GSX/EZX

www.rovingnetworks.com WiFly-RN-UM 11/9/2011

809 University Avenue • Los Gatos, CA 95032 • Tel (408) 395-6539 • info@RovingNetworks.com

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NOTE: The Blue LED is connected to GPIO7 on the Wi-Fi Serial Adapter (RN-370) and the RN-174

development board. The blue LED is not connected to GPIO7 on the RN-134 board. It is not possible

to power off the blue LED on the RN-134 board as it is directly connected to power.

10.5.1. Setting the alternate GPIO functions

The default functions of GPIO 4 5, 6 is to control the LED functionality. This default functionality can be

overridden to allow user programmable IO or alternate IO functionality by using the set sys iofunc

<mask> command. Value is entered as a hex number.

The hex value represents a bit mask that controls each bit in the <mask> represents a particular GPIO pin.

If a bit is 0, then that GPIO is driven/read by the firmware per the default function.

The IO function <mask> is encoded as such:

Bit

DIRECTION

Function

GPIO-4

output

Disable LED function so IO can be used as GPIO

GPIO-5

output

Disable LED function so IO can be used as GPIO

GPIO-6

output

Disable LED function so IO can be used as GPIO

Not Used

GPIO-4

output

HIGH once associated/authenticated and have IP address.

GPIO-5

input

Set HIGH to trigger TCP connection, LOW to disconnect.

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 i command 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 iofunc 0x70 // 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.

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