Texas Instruments SWRU294, User Manual, Page: 9 / 57

SWRU294
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4.2.2 Virtual COM port USB driver
If you are using SmartRF TrxEB in UART Mode (see section 6.1.2), a standard driver for a virtual
COM port over USB is used (USB CDC-ACM). If you did a complete install of SmartRF Studio,
Windows will recognize the device automatically. If prompted with the Windows Hardware
Wizard, select “Install the software automatically (recommended)” and click next to finish the
installation. The SmartRF TrxEB is now ready for use!
If the SmartRF TrxEB CDC-ACM driver is not found by the Hardware Wizard, make sure you
have installed the latest version of SmartRF Studio [1]. In the Windows Hardware Wizard, select
“Install from a list or specific location (Advanced)”. You will see below window.
Figure 1
– Install virtual COM port USB driver using the Windows Hardware Wizard
The driver for the Virtual COM Port (VCP) is typically located in the directory
C:\Program
Files\Texas Instruments\SmartRF Tools\Drivers\vcp , where C:\Program Files\Texas
Instruments\SmartRF Tools\ is the root installation directory for SmartRF Tools such as SmartRF
Studio. The path may be different if you have chosen a different installation directory for SmartRF
Studio.
If the above fails, select “Don’t Search. I will choose the driver to install.” A new window will open,
asking for a location of where the drivers can be found. Locate the
trxeb_cdc_uart.inf file and
select that driver for installation.
NOTE:
The SmartRF TrxEB must be in “UART Mode” in order to be recognized as a virtual
COM port. The EB is in UART Mode when hardware switches S1 and S2 are in positions
“UART” and “Enable”, respectively. See section 6.1 for more information about the SmartRF
TrxEB operating modes.