1*ecde56a6SMatthias Ringwald# POSIX H4 Port for Dialog Semiconductor DA14581 2*ecde56a6SMatthias Ringwald 3*ecde56a6SMatthias RingwaldThis port allows to use the DA14581 connected via UART with BTstack running on a POSIX host system. 4*ecde56a6SMatthias Ringwald 5*ecde56a6SMatthias RingwaldIt first downloads the hci_581_active_uart.hex firmware from the DA14581_HCI_3.110.2.12 SDK packet, before BTstack starts up. 6*ecde56a6SMatthias Ringwald 7*ecde56a6SMatthias RingwaldPlease note that it does not detect if the firmware has already been downloaded, so you need to reset the DA14581 before starting an example. 8*ecde56a6SMatthias Ringwald 9*ecde56a6SMatthias RingwaldFor production use, the HCI firmware could be flashed into the OTP and the firmware download could be skipped. 10*ecde56a6SMatthias Ringwald 11*ecde56a6SMatthias RingwaldTested with the official DA14581 Dev Kit on OS X. 12