User manual

WiFly GSX/EZX
www.rovingnetworks.com WiFly-RN-UM 11/9/2011
809 University Avenue • Los Gatos, CA 95032 • Tel [phone] • [e-mail]
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The LEDs on the RN-134) are connected to GPIO 4, 5 and 6. To disable the LEDs, enable the alternative
functions of the LEDs (set sys iofunc 0x7).
NOTE: The Yellow, Red and Green LEDs can be turned off. The Blue LED on the RN-134 is the
power LED and cannot be turned OFF.
The Blue LED on the RN-174 is connected to GPIO7 which is output by default. This LED is not
driven by the RN-174 board as the default powerup state of GPIO7 is LOW.
The get sys command will show the setting of the GPIO mask.
<2.21> get sys
SleepTmr=……
IoFunc=0x0
IoMask=0x21f0
The table below shows the usage of the GPIO pins with their default state and functionality.
Bit
Position
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Signal
Name
GPIO-
14
GPIO-
13
UART
RTS
GPIO-
12
UART
CTS
GPIO-
11
UART-
RX
GPIO-
10
UART-
TX
GPIO9
GPIO8
GPIO7
GPIO6
GPIO5
GPIO4
GPIO3
GPIO2
GPIO1
GPIO0
Default
State
(RN-131)
N/A
Output
Input
Input
Output
Input
Input
Output
Output
Output
Output
N/A
N/A
N/A
N/A
Default
State
(RN-171)
Input
Output
Input
Input
Output
Input
Output
Output
Output
Output
Output
Input
Input
Input
N/A
Default
Function
Goes HIGH on POWERUP, LOW once system is READY.
If HW Flow control enabled, toggles HIGH to indicate RX
buffer full
Throttles transmitter if HW flow control is enabled.
LOW enables transmitter, HIGH disable.
UART RX
UART TX
ADHOC MODE & FACTORY RESET
NOT USED
BLUE LED
RED LED
YELLOW LED
GREEN LED
NOT USED
NOT USED
NOT USED