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hci: use 4 bytes HCI_OUTGOING_PRE_BUFFER_SIZE if not defined and ENABLE_H5 is defined

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This commit is contained in:
Matthias Ringwald 2021-03-04 09:49:29 +01:00
parent 578a8f8431
commit c6602a61dd
1 changed files with 12 additions and 6 deletions
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18
src/hci.h
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@ -135,13 +135,19 @@ extern "C" {
#endif
#endif
// additional pre-buffer space for packets to Bluetooth module, for now, used for HCI Transport H4 DMA
// additional pre-buffer space for packets to Bluetooth module
// - H4 requires 1 byte for the packet type
// - h5 requires 4 bytes for H5 header
#ifndef HCI_OUTGOING_PRE_BUFFER_SIZE
#ifdef HAVE_HOST_CONTROLLER_API
#define HCI_OUTGOING_PRE_BUFFER_SIZE 0
#else
#define HCI_OUTGOING_PRE_BUFFER_SIZE 1
#endif
#ifdef HAVE_HOST_CONTROLLER_API
#define HCI_OUTGOING_PRE_BUFFER_SIZE 0
#else
#ifdef ENABLE_H5
#define HCI_OUTGOING_PRE_BUFFER_SIZE 4
#else
#define HCI_OUTGOING_PRE_BUFFER_SIZE 1
#endif
#endif
#endif
// BNEP may uncompress the IP Header by 16 bytes, GATT Client requires two additional bytes for long characteristic reads