RF-to-USB-RD
Rev. 0.1
5
Figure 5. RF to USB Network Demo Application During Communication
When the button on the Sensor Node is pressed to initiate communication with the USB Dongle, the Sensor Node
obtains a Device ID. The Device ID is persistent as long as the Sensor Node is powered. If multiple Sensor Nodes
are present, each of them will obtain a unique Device ID. The Network demo supports up to four devices
simultaneously.
The green LED on the Sensor Node blinks to indicate device transmission. The red LED blinks to indicate no
acknowledgement or no association response. If the red LED blinks once the first time the button is pushed, it
indicates that the Sensor Node was not able to associate with the USB Dongle to obtain a Device ID. If this
happens, make sure the USB Dongle is connected to the PC and the Network Demo application is connected to
the USB Dongle.
If the device successfully associated, the green LED will blink twice a second for ten seconds. If the red LED also
blinks, this indicates that there was no acknowledgement received for the Sensor Node’s transmissions. If this
happens, please make sure the USB Dongle is still connected to the PC and the Network GUI is connected to the
USB Dongle. Do not put your finger on the Sensor Node antenna while it is communicating.
To reset the MCU on the Sensor Node, remove the AAA battery, hold the button for a second to discharge the
capacitor, then re-insert the battery. The battery must be removed to switch between the Network Demo and the
UART demo. If the Sensor Node LEDs blink for more than ten seconds, it is running the UART demo. Remove the
battery, and reset the MCU.
If the USB Dongle red LED illuminates continuously, this indicates a hardware error has occurred. Unplug the USB
Dongle from the PC and try again.
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