Update README

    add_library(libusb-1.0.27 STATIC IMPORTED)

    set_target_properties(libusb PROPERTIES IMPORTED_LOCATION ${LIBUSB_LIB_PATH})

    include_directories(${LIBUSB_INCLUDE_DIR})

    include_directories(${LIBUSB_INCLUDE_DIR})

elseif(WIN32)

    include_directories(${CMAKE_CURRENT_SOURCE_DIR}/MCP2221_DLL/unmanaged/dll)

Support for user space usage of the [MCP2221A][1] IC from Microchip. 

## Linux

To access the USB device you must add the following rule under */etc/udev/rules.d/* (i.e in a file called mcp2221a.rules) :

To access the USB HID device you must add the following rule under */etc/udev/rules.d/* (i.e in a file called 99-mcp2221a.rules) :

```bash

SUBSYSTEM=="usb", ATTRS{idVendor}=="04d8", ATTRS{idProduct}=="00dd", GROUP="plugdev", TAG+="uaccess"

```

You must reboot after this.

Then update *udev* with the following commands:

```bash

sudo udevadm control --reload

sudo udevadm trigger

```

To access the I2C devices loaded by the [*mcp2221*][2] kernel driver you must add your user to the *i2c* group:

## Windows 

The device needs a windows driver to be recognized. 

## Dependencies

```bash

sudo apt install -y libi2c-dev

```

Nothing to configure the Microchip *dll* contains all the configuration necessary.

## Build

Standard **CMAKE**:

For Linux:

```bash

cmake --preset default

cmake --preset linux

cmake --build build/

```

For Windows:

```bash

cmake --preset windows

cmake --build build --config Release

```

## Try it out

Run the test software found in the tests folder. Expected result is:

## TODO

- [ ] Add python library 

- [ ] Add Windows support

- [X] Add Windows support

- [ ] Add hidapi support

[1]:http://ww1.microchip.com/downloads/en/devicedoc/20005565b.pdf