BTnut Development Tools - Windows USB Access
The CP2101-drivers for Windows can be found on the BTnode CDROM (
CDROM:\tools\silabscp2101_driver\) or on the SiLabs Website as part of the USBXpress package: http://www.silabs.com/tgwWebApp/public/web_content/products/Microcontrollers/USB/en/USBXpress.htm
Update: New standalone drivers are available here.
- Connect the BTnode rev3 via the USB prog board to your computer.
- Install the drivers from
- Use the script list_usb2uart.vbs from CDROM:\tools\misc_tools to acquire the COM-Port (COMx) of the USB prog board. Remember this port, as it will be used to connect to the BTnode rev3 subsequently.
- If the COM-Port shouldn't be indicated by the script above, check the Device Manager. The device should be listed in the Ports (COM & LPT) field as CP2101 USB to UART Bridge Controller (COMx). Screenshot.
- It might be required to do a reboot. This might be necessary as well, if the device is suddenly not shown in the Ports (COM & LPT) field anymore.
Note: If you are using COM ports higher than COM9, then use
//./COMx as port name. This formating also works for COM1-COM9.
You can now upload an application: See 3.3. Upload Sample Application (.hex file).