ThingMagic Mercury xPRESS, Platform Manual, Page: 52 / 146

WiFi Module
A D I V I S I O N O F T R I M B L E
52
Using the Optional Modules
Connection Status
RN-171 uses GPIO pins to monitor the status of association/connection and to control the
connection as below.
xPRESS Reader uses GPIO4 and GPIO6 pins to monitor the status of association and
connection in function
WIFLY_MonitorWiflyStatus() which will be called by the task
task_Wedge .
Note
GPIO5 is not used as this pin is NC on xPRESS Reader
Power Management
RN-171 has the power features shown below:
Signal Name Direction Function
GPIO4 Output This pin goes high after the module has associated/authenticated and has
an IP address.
GPIO5 Input Set this pin high to trigger a TCP connection and low to disconnect.
GPIO6 Output This pin goes high when the module is connected over TCP and low
when disconnected.