1# BTstack port for Windows Systems using the WinUSB Driver 2 3The Windows-WinUSB port uses the native run loop and WinUSB API to access a USB Bluetooth dongle. 4 5## Access to Bluetooth USB Dongle with Zadig 6 7To allow libusb or WinUSB to access an USB Bluetooth dongle, you need to install a special device driver to make it accessible to user space processes. 8 9It works like this: 10 11- Download [Zadig](http://zadig.akeo.ie) 12- Start Zadig 13- Select Options -> “List all devices” 14- Select USB Bluetooth dongle in the big pull down list 15- Select WinUSB (libusb) in the right pull pull down list 16- Select “Replace Driver” 17 18## Toolchain 19 20The port requires a Unix-like toolchain. We successfully used [mingw-w64](https://mingw-w64.org/doku.php) to compile and run the examples. mingw64-w64 is based on [MinGW](mingw.org), which '...provides a complete Open Source programming tool set which is suitable for the development of native MS-Windows applications, and which do not depend on any 3rd-party C-Runtime DLLs.' 21 22We've used the Msys2 package available from the [downloads page](https://mingw-w64.org/doku.php/download) on Windows 10, 64-bit and use the MSYS2 MinGW 32-bit start menu item to compile 32-bit binaries that run on both 32/64-bit systems. 23 24In the MSYS2 shell, you can install git, python, and, winpty with pacman: 25 26 $ pacman -S git 27 $ pacman -S python 28 $ pacman -S winpty 29 30## Compilation 31 32With mingw64-w64 installed, just go to the port/windows-winusb directory and run make 33 34 $ cd btstack/port/windows-winusb 35 $ make 36 37## Console Output 38 39When running the examples in the MSYS2 shell, the console input (via btstack_stdin_support) doesn't work. It works in the older MSYS and also the regular CMD.exe environment. Another option is to install WinPTY and then start the example via WinPTY like this: 40 41 $ winpty ./spp_and_le_counter.exe 42 43