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Dependencies:   FatFileSystem TB6612FNG2 mbed

BTstack/utils.c@0:de03cbbcd0ff, 2015-11-30 (annotated)

Committer:
mbed_Cookbook_SE
Date:
Mon Nov 30 09:32:15 2015 +0000
Revision:
0:de03cbbcd0ff
??

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_Cookbook_SE 0:de03cbbcd0ff 1 /*
mbed_Cookbook_SE 0:de03cbbcd0ff 2 * Copyright (C) 2009-2012 by Matthias Ringwald
mbed_Cookbook_SE 0:de03cbbcd0ff 3 *
mbed_Cookbook_SE 0:de03cbbcd0ff 4 * Redistribution and use in source and binary forms, with or without
mbed_Cookbook_SE 0:de03cbbcd0ff 5 * modification, are permitted provided that the following conditions
mbed_Cookbook_SE 0:de03cbbcd0ff 6 * are met:
mbed_Cookbook_SE 0:de03cbbcd0ff 7 *
mbed_Cookbook_SE 0:de03cbbcd0ff 8 * 1. Redistributions of source code must retain the above copyright
mbed_Cookbook_SE 0:de03cbbcd0ff 9 * notice, this list of conditions and the following disclaimer.
mbed_Cookbook_SE 0:de03cbbcd0ff 10 * 2. Redistributions in binary form must reproduce the above copyright
mbed_Cookbook_SE 0:de03cbbcd0ff 11 * notice, this list of conditions and the following disclaimer in the
mbed_Cookbook_SE 0:de03cbbcd0ff 12 * documentation and/or other materials provided with the distribution.
mbed_Cookbook_SE 0:de03cbbcd0ff 13 * 3. Neither the name of the copyright holders nor the names of
mbed_Cookbook_SE 0:de03cbbcd0ff 14 * contributors may be used to endorse or promote products derived
mbed_Cookbook_SE 0:de03cbbcd0ff 15 * from this software without specific prior written permission.
mbed_Cookbook_SE 0:de03cbbcd0ff 16 * 4. Any redistribution, use, or modification is done solely for
mbed_Cookbook_SE 0:de03cbbcd0ff 17 * personal benefit and not for any commercial purpose or for
mbed_Cookbook_SE 0:de03cbbcd0ff 18 * monetary gain.
mbed_Cookbook_SE 0:de03cbbcd0ff 19 *
mbed_Cookbook_SE 0:de03cbbcd0ff 20 * THIS SOFTWARE IS PROVIDED BY MATTHIAS RINGWALD AND CONTRIBUTORS
mbed_Cookbook_SE 0:de03cbbcd0ff 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
mbed_Cookbook_SE 0:de03cbbcd0ff 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
mbed_Cookbook_SE 0:de03cbbcd0ff 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
mbed_Cookbook_SE 0:de03cbbcd0ff 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
mbed_Cookbook_SE 0:de03cbbcd0ff 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
mbed_Cookbook_SE 0:de03cbbcd0ff 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
mbed_Cookbook_SE 0:de03cbbcd0ff 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
mbed_Cookbook_SE 0:de03cbbcd0ff 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_Cookbook_SE 0:de03cbbcd0ff 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
mbed_Cookbook_SE 0:de03cbbcd0ff 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
mbed_Cookbook_SE 0:de03cbbcd0ff 31 * SUCH DAMAGE.
mbed_Cookbook_SE 0:de03cbbcd0ff 32 *
mbed_Cookbook_SE 0:de03cbbcd0ff 33 * Please inquire about commercial licensing options at btstack@ringwald.ch
mbed_Cookbook_SE 0:de03cbbcd0ff 34 *
mbed_Cookbook_SE 0:de03cbbcd0ff 35 */
mbed_Cookbook_SE 0:de03cbbcd0ff 36
mbed_Cookbook_SE 0:de03cbbcd0ff 37 /*
mbed_Cookbook_SE 0:de03cbbcd0ff 38 * utils.c
mbed_Cookbook_SE 0:de03cbbcd0ff 39 *
mbed_Cookbook_SE 0:de03cbbcd0ff 40 * General utility functions
mbed_Cookbook_SE 0:de03cbbcd0ff 41 *
mbed_Cookbook_SE 0:de03cbbcd0ff 42 * Created by Matthias Ringwald on 7/23/09.
mbed_Cookbook_SE 0:de03cbbcd0ff 43 */
mbed_Cookbook_SE 0:de03cbbcd0ff 44
mbed_Cookbook_SE 0:de03cbbcd0ff 45 #include "config.h"
mbed_Cookbook_SE 0:de03cbbcd0ff 46 #include <btstack/utils.h>
mbed_Cookbook_SE 0:de03cbbcd0ff 47 #include <stdio.h>
mbed_Cookbook_SE 0:de03cbbcd0ff 48 #include "debug.h"
mbed_Cookbook_SE 0:de03cbbcd0ff 49
mbed_Cookbook_SE 0:de03cbbcd0ff 50 void bt_store_16(uint8_t *buffer, uint16_t pos, uint16_t value){
mbed_Cookbook_SE 0:de03cbbcd0ff 51 buffer[pos++] = value;
mbed_Cookbook_SE 0:de03cbbcd0ff 52 buffer[pos++] = value >> 8;
mbed_Cookbook_SE 0:de03cbbcd0ff 53 }
mbed_Cookbook_SE 0:de03cbbcd0ff 54
mbed_Cookbook_SE 0:de03cbbcd0ff 55 void bt_store_32(uint8_t *buffer, uint16_t pos, uint32_t value){
mbed_Cookbook_SE 0:de03cbbcd0ff 56 buffer[pos++] = value;
mbed_Cookbook_SE 0:de03cbbcd0ff 57 buffer[pos++] = value >> 8;
mbed_Cookbook_SE 0:de03cbbcd0ff 58 buffer[pos++] = value >> 16;
mbed_Cookbook_SE 0:de03cbbcd0ff 59 buffer[pos++] = value >> 24;
mbed_Cookbook_SE 0:de03cbbcd0ff 60 }
mbed_Cookbook_SE 0:de03cbbcd0ff 61
mbed_Cookbook_SE 0:de03cbbcd0ff 62 void net_store_16(uint8_t *buffer, uint16_t pos, uint16_t value){
mbed_Cookbook_SE 0:de03cbbcd0ff 63 buffer[pos++] = value >> 8;
mbed_Cookbook_SE 0:de03cbbcd0ff 64 buffer[pos++] = value;
mbed_Cookbook_SE 0:de03cbbcd0ff 65 }
mbed_Cookbook_SE 0:de03cbbcd0ff 66
mbed_Cookbook_SE 0:de03cbbcd0ff 67 void net_store_32(uint8_t *buffer, uint16_t pos, uint32_t value){
mbed_Cookbook_SE 0:de03cbbcd0ff 68 buffer[pos++] = value >> 24;
mbed_Cookbook_SE 0:de03cbbcd0ff 69 buffer[pos++] = value >> 16;
mbed_Cookbook_SE 0:de03cbbcd0ff 70 buffer[pos++] = value >> 8;
mbed_Cookbook_SE 0:de03cbbcd0ff 71 buffer[pos++] = value;
mbed_Cookbook_SE 0:de03cbbcd0ff 72 }
mbed_Cookbook_SE 0:de03cbbcd0ff 73
mbed_Cookbook_SE 0:de03cbbcd0ff 74 void bt_flip_addr(bd_addr_t dest, bd_addr_t src){
mbed_Cookbook_SE 0:de03cbbcd0ff 75 dest[0] = src[5];
mbed_Cookbook_SE 0:de03cbbcd0ff 76 dest[1] = src[4];
mbed_Cookbook_SE 0:de03cbbcd0ff 77 dest[2] = src[3];
mbed_Cookbook_SE 0:de03cbbcd0ff 78 dest[3] = src[2];
mbed_Cookbook_SE 0:de03cbbcd0ff 79 dest[4] = src[1];
mbed_Cookbook_SE 0:de03cbbcd0ff 80 dest[5] = src[0];
mbed_Cookbook_SE 0:de03cbbcd0ff 81 }
mbed_Cookbook_SE 0:de03cbbcd0ff 82
mbed_Cookbook_SE 0:de03cbbcd0ff 83 void hexdump(void *data, int size){
mbed_Cookbook_SE 0:de03cbbcd0ff 84 int i;
mbed_Cookbook_SE 0:de03cbbcd0ff 85 for (i=0; i<size;i++){
mbed_Cookbook_SE 0:de03cbbcd0ff 86 log_info("%02X ", ((uint8_t *)data)[i]);
mbed_Cookbook_SE 0:de03cbbcd0ff 87 }
mbed_Cookbook_SE 0:de03cbbcd0ff 88 log_info("\n");
mbed_Cookbook_SE 0:de03cbbcd0ff 89 }
mbed_Cookbook_SE 0:de03cbbcd0ff 90
mbed_Cookbook_SE 0:de03cbbcd0ff 91 void printUUID(uint8_t *uuid) {
mbed_Cookbook_SE 0:de03cbbcd0ff 92 log_info("%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
mbed_Cookbook_SE 0:de03cbbcd0ff 93 uuid[0], uuid[1], uuid[2], uuid[3], uuid[4], uuid[5], uuid[6], uuid[7],
mbed_Cookbook_SE 0:de03cbbcd0ff 94 uuid[8], uuid[9], uuid[10], uuid[11], uuid[12], uuid[13], uuid[14], uuid[15]);
mbed_Cookbook_SE 0:de03cbbcd0ff 95 }
mbed_Cookbook_SE 0:de03cbbcd0ff 96
mbed_Cookbook_SE 0:de03cbbcd0ff 97 static char bd_addr_to_str_buffer[6*3]; // 12:45:78:01:34:67\0
mbed_Cookbook_SE 0:de03cbbcd0ff 98 char * bd_addr_to_str(bd_addr_t addr){
mbed_Cookbook_SE 0:de03cbbcd0ff 99 sprintf(bd_addr_to_str_buffer, "%02x:%02x:%02x:%02x:%02x:%02x", addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
mbed_Cookbook_SE 0:de03cbbcd0ff 100 return (char *) bd_addr_to_str_buffer;
mbed_Cookbook_SE 0:de03cbbcd0ff 101 }
mbed_Cookbook_SE 0:de03cbbcd0ff 102
mbed_Cookbook_SE 0:de03cbbcd0ff 103 void print_bd_addr( bd_addr_t addr){
mbed_Cookbook_SE 0:de03cbbcd0ff 104 log_info("%s", bd_addr_to_str(addr));
mbed_Cookbook_SE 0:de03cbbcd0ff 105 }
mbed_Cookbook_SE 0:de03cbbcd0ff 106
mbed_Cookbook_SE 0:de03cbbcd0ff 107 #ifndef EMBEDDED
mbed_Cookbook_SE 0:de03cbbcd0ff 108 int sscan_bd_addr(uint8_t * addr_string, bd_addr_t addr){
mbed_Cookbook_SE 0:de03cbbcd0ff 109 unsigned int bd_addr_buffer[BD_ADDR_LEN]; //for sscanf, integer needed
mbed_Cookbook_SE 0:de03cbbcd0ff 110 // reset result buffer
mbed_Cookbook_SE 0:de03cbbcd0ff 111 int i;
mbed_Cookbook_SE 0:de03cbbcd0ff 112 for (i = 0; i < BD_ADDR_LEN; i++) {
mbed_Cookbook_SE 0:de03cbbcd0ff 113 bd_addr_buffer[i] = 0;
mbed_Cookbook_SE 0:de03cbbcd0ff 114 }
mbed_Cookbook_SE 0:de03cbbcd0ff 115
mbed_Cookbook_SE 0:de03cbbcd0ff 116 // parse
mbed_Cookbook_SE 0:de03cbbcd0ff 117 int result = sscanf( (char *) addr_string, "%2x:%2x:%2x:%2x:%2x:%2x", &bd_addr_buffer[0], &bd_addr_buffer[1], &bd_addr_buffer[2],
mbed_Cookbook_SE 0:de03cbbcd0ff 118 &bd_addr_buffer[3], &bd_addr_buffer[4], &bd_addr_buffer[5]);
mbed_Cookbook_SE 0:de03cbbcd0ff 119 // store
mbed_Cookbook_SE 0:de03cbbcd0ff 120 if (result == 6){
mbed_Cookbook_SE 0:de03cbbcd0ff 121 for (i = 0; i < BD_ADDR_LEN; i++) {
mbed_Cookbook_SE 0:de03cbbcd0ff 122 addr[i] = (uint8_t) bd_addr_buffer[i];
mbed_Cookbook_SE 0:de03cbbcd0ff 123 }
mbed_Cookbook_SE 0:de03cbbcd0ff 124 }
mbed_Cookbook_SE 0:de03cbbcd0ff 125 return (result == 6);
mbed_Cookbook_SE 0:de03cbbcd0ff 126 }
mbed_Cookbook_SE 0:de03cbbcd0ff 127 #endif
mbed_Cookbook_SE 0:de03cbbcd0ff 128
mbed_Cookbook_SE 0:de03cbbcd0ff 129 /*
mbed_Cookbook_SE 0:de03cbbcd0ff 130 * CRC (reversed crc) lookup table as calculated by the table generator in ETSI TS 101 369 V6.3.0.
mbed_Cookbook_SE 0:de03cbbcd0ff 131 */
mbed_Cookbook_SE 0:de03cbbcd0ff 132 static const uint8_t crc8table[256] = { /* reversed, 8-bit, poly=0x07 */
mbed_Cookbook_SE 0:de03cbbcd0ff 133 0x00, 0x91, 0xE3, 0x72, 0x07, 0x96, 0xE4, 0x75, 0x0E, 0x9F, 0xED, 0x7C, 0x09, 0x98, 0xEA, 0x7B,
mbed_Cookbook_SE 0:de03cbbcd0ff 134 0x1C, 0x8D, 0xFF, 0x6E, 0x1B, 0x8A, 0xF8, 0x69, 0x12, 0x83, 0xF1, 0x60, 0x15, 0x84, 0xF6, 0x67,
mbed_Cookbook_SE 0:de03cbbcd0ff 135 0x38, 0xA9, 0xDB, 0x4A, 0x3F, 0xAE, 0xDC, 0x4D, 0x36, 0xA7, 0xD5, 0x44, 0x31, 0xA0, 0xD2, 0x43,
mbed_Cookbook_SE 0:de03cbbcd0ff 136 0x24, 0xB5, 0xC7, 0x56, 0x23, 0xB2, 0xC0, 0x51, 0x2A, 0xBB, 0xC9, 0x58, 0x2D, 0xBC, 0xCE, 0x5F,
mbed_Cookbook_SE 0:de03cbbcd0ff 137 0x70, 0xE1, 0x93, 0x02, 0x77, 0xE6, 0x94, 0x05, 0x7E, 0xEF, 0x9D, 0x0C, 0x79, 0xE8, 0x9A, 0x0B,
mbed_Cookbook_SE 0:de03cbbcd0ff 138 0x6C, 0xFD, 0x8F, 0x1E, 0x6B, 0xFA, 0x88, 0x19, 0x62, 0xF3, 0x81, 0x10, 0x65, 0xF4, 0x86, 0x17,
mbed_Cookbook_SE 0:de03cbbcd0ff 139 0x48, 0xD9, 0xAB, 0x3A, 0x4F, 0xDE, 0xAC, 0x3D, 0x46, 0xD7, 0xA5, 0x34, 0x41, 0xD0, 0xA2, 0x33,
mbed_Cookbook_SE 0:de03cbbcd0ff 140 0x54, 0xC5, 0xB7, 0x26, 0x53, 0xC2, 0xB0, 0x21, 0x5A, 0xCB, 0xB9, 0x28, 0x5D, 0xCC, 0xBE, 0x2F,
mbed_Cookbook_SE 0:de03cbbcd0ff 141 0xE0, 0x71, 0x03, 0x92, 0xE7, 0x76, 0x04, 0x95, 0xEE, 0x7F, 0x0D, 0x9C, 0xE9, 0x78, 0x0A, 0x9B,
mbed_Cookbook_SE 0:de03cbbcd0ff 142 0xFC, 0x6D, 0x1F, 0x8E, 0xFB, 0x6A, 0x18, 0x89, 0xF2, 0x63, 0x11, 0x80, 0xF5, 0x64, 0x16, 0x87,
mbed_Cookbook_SE 0:de03cbbcd0ff 143 0xD8, 0x49, 0x3B, 0xAA, 0xDF, 0x4E, 0x3C, 0xAD, 0xD6, 0x47, 0x35, 0xA4, 0xD1, 0x40, 0x32, 0xA3,
mbed_Cookbook_SE 0:de03cbbcd0ff 144 0xC4, 0x55, 0x27, 0xB6, 0xC3, 0x52, 0x20, 0xB1, 0xCA, 0x5B, 0x29, 0xB8, 0xCD, 0x5C, 0x2E, 0xBF,
mbed_Cookbook_SE 0:de03cbbcd0ff 145 0x90, 0x01, 0x73, 0xE2, 0x97, 0x06, 0x74, 0xE5, 0x9E, 0x0F, 0x7D, 0xEC, 0x99, 0x08, 0x7A, 0xEB,
mbed_Cookbook_SE 0:de03cbbcd0ff 146 0x8C, 0x1D, 0x6F, 0xFE, 0x8B, 0x1A, 0x68, 0xF9, 0x82, 0x13, 0x61, 0xF0, 0x85, 0x14, 0x66, 0xF7,
mbed_Cookbook_SE 0:de03cbbcd0ff 147 0xA8, 0x39, 0x4B, 0xDA, 0xAF, 0x3E, 0x4C, 0xDD, 0xA6, 0x37, 0x45, 0xD4, 0xA1, 0x30, 0x42, 0xD3,
mbed_Cookbook_SE 0:de03cbbcd0ff 148 0xB4, 0x25, 0x57, 0xC6, 0xB3, 0x22, 0x50, 0xC1, 0xBA, 0x2B, 0x59, 0xC8, 0xBD, 0x2C, 0x5E, 0xCF
mbed_Cookbook_SE 0:de03cbbcd0ff 149 };
mbed_Cookbook_SE 0:de03cbbcd0ff 150
mbed_Cookbook_SE 0:de03cbbcd0ff 151 #define CRC8_INIT 0xFF // Initial FCS value
mbed_Cookbook_SE 0:de03cbbcd0ff 152 #define CRC8_OK 0xCF // Good final FCS value
mbed_Cookbook_SE 0:de03cbbcd0ff 153 /*-----------------------------------------------------------------------------------*/
mbed_Cookbook_SE 0:de03cbbcd0ff 154 uint8_t crc8(uint8_t *data, uint16_t len)
mbed_Cookbook_SE 0:de03cbbcd0ff 155 {
mbed_Cookbook_SE 0:de03cbbcd0ff 156 uint16_t count;
mbed_Cookbook_SE 0:de03cbbcd0ff 157 uint8_t crc = CRC8_INIT;
mbed_Cookbook_SE 0:de03cbbcd0ff 158 for (count = 0; count < len; count++)
mbed_Cookbook_SE 0:de03cbbcd0ff 159 crc = crc8table[crc ^ data[count]];
mbed_Cookbook_SE 0:de03cbbcd0ff 160 return crc;
mbed_Cookbook_SE 0:de03cbbcd0ff 161 }
mbed_Cookbook_SE 0:de03cbbcd0ff 162
mbed_Cookbook_SE 0:de03cbbcd0ff 163 /*-----------------------------------------------------------------------------------*/
mbed_Cookbook_SE 0:de03cbbcd0ff 164 uint8_t crc8_check(uint8_t *data, uint16_t len, uint8_t check_sum)
mbed_Cookbook_SE 0:de03cbbcd0ff 165 {
mbed_Cookbook_SE 0:de03cbbcd0ff 166 uint8_t crc;
mbed_Cookbook_SE 0:de03cbbcd0ff 167
mbed_Cookbook_SE 0:de03cbbcd0ff 168 crc = crc8(data, len);
mbed_Cookbook_SE 0:de03cbbcd0ff 169
mbed_Cookbook_SE 0:de03cbbcd0ff 170 crc = crc8table[crc ^ check_sum];
mbed_Cookbook_SE 0:de03cbbcd0ff 171 if (crc == CRC8_OK)
mbed_Cookbook_SE 0:de03cbbcd0ff 172 return 0; /* Valid */
mbed_Cookbook_SE 0:de03cbbcd0ff 173 else
mbed_Cookbook_SE 0:de03cbbcd0ff 174 return 1; /* Failed */
mbed_Cookbook_SE 0:de03cbbcd0ff 175
mbed_Cookbook_SE 0:de03cbbcd0ff 176 }
mbed_Cookbook_SE 0:de03cbbcd0ff 177
mbed_Cookbook_SE 0:de03cbbcd0ff 178 /*-----------------------------------------------------------------------------------*/
mbed_Cookbook_SE 0:de03cbbcd0ff 179 uint8_t crc8_calc(uint8_t *data, uint16_t len)
mbed_Cookbook_SE 0:de03cbbcd0ff 180 {
mbed_Cookbook_SE 0:de03cbbcd0ff 181 /* Ones complement */
mbed_Cookbook_SE 0:de03cbbcd0ff 182 return 0xFF - crc8(data, len);
mbed_Cookbook_SE 0:de03cbbcd0ff 183 }
mbed_Cookbook_SE 0:de03cbbcd0ff 184