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71 lines
2.3 KiB
C
71 lines
2.3 KiB
C
/*
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* utils.h
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*
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* General utility functions
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*
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* Created by Matthias Ringwald on 7/23/09.
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*/
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#pragma once
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#include <stdint.h>
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/**
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* @brief hci connection handle type
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*/
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typedef uint16_t hci_con_handle_t;
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/**
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* @brief Length of a bluetooth device address.
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*/
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#define BD_ADDR_LEN 6
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typedef uint8_t bd_addr_t[BD_ADDR_LEN];
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/**
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* @brief The link key type
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*/
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#define LINK_KEY_LEN 16
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typedef uint8_t link_key_t[LINK_KEY_LEN];
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// helper for BT little endian format
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#define READ_BT_16( buffer, pos) ( ((uint16_t) buffer[pos]) | (((uint16_t)buffer[pos+1]) << 8))
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#define READ_BT_24( buffer, pos) ( ((uint32_t) buffer[pos]) | (((uint32_t)buffer[pos+1]) << 8) | (((uint32_t)buffer[pos+2]) << 16))
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#define READ_BT_32( buffer, pos) ( ((uint32_t) buffer[pos]) | (((uint32_t)buffer[pos+1]) << 8) | (((uint32_t)buffer[pos+2]) << 16) | (((uint32_t) buffer[pos+3])) << 24)
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// HCI CMD OGF/OCF
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#define READ_CMD_OGF(buffer) (buffer[1] >> 2)
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#define READ_CMD_OCF(buffer) ((buffer[1] & 0x03) << 8 | buffer[0])
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// check if command complete event for given command
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#define COMMAND_COMPLETE_EVENT(event,cmd) ( event[0] == HCI_EVENT_COMMAND_COMPLETE && READ_BT_16(event,3) == cmd.opcode)
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// ACL Packet
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#define READ_ACL_CONNECTION_HANDLE( buffer ) ( READ_BT_16(buffer,0) & 0x0fff)
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#define READ_ACL_FLAGS( buffer ) ( buffer[1] >> 4 )
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#define READ_ACL_LENGTH( buffer ) (READ_BT_16(buffer, 2)
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// L2CAP Packet
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#define READ_L2CAP_LENGTH(buffer) ( READ_BT_16(buffer, 4))
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#define READ_L2CAP_CHANNEL_ID(buffer) ( READ_BT_16(buffer, 6))
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// L2CAP Signaling Packet
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#define READ_L2CAP_SIGNALING_CODE( buffer ) (buffer[ 8])
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#define READ_L2CAP_SIGNALING_IDENTIFIER( buffer ) (buffer[ 9])
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#define READ_L2CAP_SIGNALING_LENGTH( buffer ) (READ_BT_16(buffer, 10))
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#define L2CAP_SIGNALING_DATA_OFFSET 12
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void bt_store_16(uint8_t *buffer, uint16_t pos, uint16_t value);
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void bt_store_32(uint8_t *buffer, uint16_t pos, uint32_t value);
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void bt_flip_addr(bd_addr_t dest, bd_addr_t src);
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void hexdump(void *data, int size);
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void print_bd_addr(bd_addr_t addr);
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int sscan_bd_addr(uint8_t * addr_string, bd_addr_t addr);
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uint8_t crc8_check(uint8_t *data, uint16_t len, uint8_t check_sum);
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uint8_t crc8_calc(uint8_t *data, uint16_t len);
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#define BD_ADDR_CMP(a,b) memcmp(a,b, BD_ADDR_LEN)
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#define BD_ADDR_COPY(dest,src) memcpy(dest,src,BD_ADDR_LEN)
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