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Workaround for Infineon CYW55573 initialization #643

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Workaround for Infineon CYW55573 initialization #643

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17 changes: 17 additions & 0 deletions src/hci.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2540,6 +2540,23 @@ static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size
return;

#ifndef HAVE_HOST_CONTROLLER_API
case HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION:
if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){
uint16_t lmp_subversion = little_endian_read_16(packet, 12);
if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION &&
lmp_subversion == 0x2257){
// Workaround for CYW55573.
// CYW55573(on my Murata TYPE 2EA) doesn't respond to READ_LOCAL_NAME or BAUD_CHANGE after HCI_RESET,
// Go to HCI_INIT_CUSTOM_INIT when received LOCAL_VERSION_INFORMATION.
//
// NOTE:
// hci_stack->manufacturer and manufacturer in the response packet were modified to BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION before.
// Refer to function hci.c/handle_command_complete_event.
hci_stack->substate = HCI_INIT_CUSTOM_INIT;
return;
}
}
break;
case HCI_INIT_W4_SEND_BAUD_CHANGE:
// for STLC2500D, baud rate change already happened.
// for others, baud rate gets changed now
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