User's Manual

15/21
4.6.2 Remark about the Application
The NANO USB stick dongle has almost* all of its pins connected to ground; therefore you should set
these pins to be input pull-down at the beginning of your application to reduce current consumption.
After a reset the default state is input pullup for all GPIOs.
* Port0, Port1 and I/O 2.0, 2,3, 2.4
4.7 Common Issues
4.7.1 SmartRF Programmer bug:
Sometimes the SmartRF Programmer window gets out of the screen so you can’t see it anymore but
it is still present in the task bar. Therefore you just need to move the window back into the screen:
1. Left click on the application in the task bar to select it
2. Right click on the application in the task bar
3. Click on Move
4. Hit any array button (up/down/left right) on your keyboard to enable the Move command
5. Move your mouse until you see the smart RF window appear on your screen.
4.7.2 USB Driver issues:
When you connect a NANO USB stick for the first time in a USB port, Microsoft Windows may
automatically install the corect driver. If it does, you should then see your NANO USB stick appear in
the Ports (COM & LPT) list in the Device Manager, labeled either RemoTI Network Processor or TI
CC2531 Low Power RF to USB CDC Serial Port.
If Windows does not install the correct driver, or does not install anything, find your NANO USB stick
in the Ports list (check under Universal Serial Bus Controller as an Unknown device or under Cebal
controlled devices) and do the following:
1. Right click on the label in the Port list
2. Click on Update Driver…
3. Select No, not this time and click Next
4. Select Install from a list or specific location (Advanced) and click Next
5. Select Don’t search. I will choose the driver to install. And click Next
6. Click on Have Disk
7. Browse to
either usb_cdc_driver_cc2531_PID16A8.inf or usb_cdc_driver_cc2531_PID16B2.inf.Try both of them,
if the first one does not work, the second one should.
5 Schematic and Layout
The complete design files including schematic and layout for the NANO USB stick is available upon
request from [e-mail]
6 Document history
Revision
Date
Description/Changes
-
2011-06-03
First revision.
1.0
2011-08-15
Updated with safety information
EVALUATION BOARD/KIT/MODULE (EVM) ADDITIONAL TERMS