1# POSIX H4 Port for Atmel ATWILC3000 2 3This port allows to use the ATWILC3000 connected via UART with BTstack running on a POSIX host system. 4 5It first downloads the hci_581_active_uart.hex firmware from the [GitHub atwilc3000/firmware](https://github.com/atwilc3000/firmware) repo, before BTstack starts up. 6 7Please note that it does not detect if the firmware has already been downloaded, so you need to reset the ATWILC3000 before starting an example. 8 9Tested with the official ATWILC3000 SHIELD on OS X. 10