1*e72b198fSMatthias Ringwald# POSIX H4 Port for Dialog Semiconductor DA14581 2*e72b198fSMatthias Ringwald 3*e72b198fSMatthias RingwaldThis port allows to use the DA14581 connected via UART with BTstack running on a POSIX host system. 4*e72b198fSMatthias Ringwald 5*e72b198fSMatthias 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*e72b198fSMatthias Ringwald 7*e72b198fSMatthias 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*e72b198fSMatthias Ringwald 9*e72b198fSMatthias RingwaldFor production use, the HCI firmware could be flashed into the OTP and the firmware download could be skipped. 10*e72b198fSMatthias Ringwald 11*e72b198fSMatthias RingwaldTested with the official DA14581 Dev Kit on OS X. 12