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h5: provide 2 byte post buffer for outgoing packets - used for 16-bit data integrity check

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This commit is contained in:
Matthias Ringwald 2017-02-24 11:14:37 +01:00
parent 7c2aa31e5c
commit e9c151bc12
2 changed files with 10 additions and 2 deletions
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7
src/hci.h
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@ -92,8 +92,11 @@ extern "C" {
#endif
#endif
// additional pre-buffer space for packets to Bluetooth module, for now, used for HCI Transport H4 DMA
// additional pre- and post-packet buffer for packets to Bluetooth module
// - pre-buffer used for HCI Transport H4 variants
// - post-buffer used for HCI Transport H5
#define HCI_OUTGOING_PRE_BUFFER_SIZE 1
#define HCI_OUTGOING_POST_BUFFER_SIZE 2
// BNEP may uncompress the IP Header by 16 bytes
#ifndef HCI_INCOMING_PRE_BUFFER_SIZE
@ -646,7 +649,7 @@ typedef struct {
// single buffer for HCI packet assembly + additional prebuffer for H4 drivers
uint8_t * hci_packet_buffer;
uint8_t hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE + HCI_PACKET_BUFFER_SIZE];
uint8_t hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE + HCI_PACKET_BUFFER_SIZE + HCI_OUTGOING_POST_BUFFER_SIZE];
uint8_t hci_packet_buffer_reserved;
uint16_t acl_fragmentation_pos;
uint16_t acl_fragmentation_total_size;

5
src/hci_transport_h5.c
View File

@ -49,6 +49,11 @@
#include "hci_transport.h"
#include "btstack_uart_block.h"
// assert post-buffer for 16-bit data integrity check is available
#if !defined(HCI_OUTGOING_POST_BUFFER_SIZE) || (HCI_OUTGOING_POST_BUFFER_SIZE < 2)
#error HCI_OUTGOING_POST_BUFFER_SIZE not defined. Please update hci.h
#endif
typedef enum {
LINK_UNINITIALIZED,
LINK_INITIALIZED,