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Diffstat (limited to 'arduino/libraries/Bluefruit52Lib/src/services/EddyStone.cpp')
| -rwxr-xr-x | arduino/libraries/Bluefruit52Lib/src/services/EddyStone.cpp | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/arduino/libraries/Bluefruit52Lib/src/services/EddyStone.cpp b/arduino/libraries/Bluefruit52Lib/src/services/EddyStone.cpp new file mode 100755 index 0000000..22b45b3 --- /dev/null +++ b/arduino/libraries/Bluefruit52Lib/src/services/EddyStone.cpp @@ -0,0 +1,180 @@ +/**************************************************************************/ +/*! + @file EddyStone.cpp + @author hathach (tinyusb.org) + + @section LICENSE + + Software License Agreement (BSD License) + + Copyright (c) 2018, Adafruit Industries (adafruit.com) + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + 1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + 3. Neither the name of the copyright holders nor the + names of its contributors may be used to endorse or promote products + derived from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY + EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY + DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ +/**************************************************************************/ + +#include "bluefruit.h" + +/*------------------------------------------------------------------*/ +/* EddyStone URL + *------------------------------------------------------------------*/ +char const * const prefix_scheme[] = +{ + [0] = "http://www." , + [1] = "https://www." , + [2] = "http://" , + [3] = "https://" +}; +enum { PREFIX_COUNT = sizeof(prefix_scheme)/sizeof(char*) }; + +char const * const url_expansion[] = +{ + [0 ] = ".com/" , + [1 ] = ".org/" , + [2 ] = ".edu/" , + [3 ] = ".net/" , + [4 ] = ".info/" , + [5 ] = ".biz/" , + [6 ] = ".gov/" , + + [7 ] = ".com" , + [8 ] = ".org" , + [9 ] = ".edu" , + [10] = ".net" , + [11] = ".info" , + [12] = ".biz" , + [13] = ".gov" , +}; + +enum { EXPANNSION_COUNT = sizeof(url_expansion)/sizeof(char*) }; + +EddyStoneUrl::EddyStoneUrl(void) +{ + _rssi = 0; + _url = NULL; +} + +EddyStoneUrl::EddyStoneUrl(int8_t rssiAt0m, const char* url) +{ + _rssi = rssiAt0m; + _url = url; +} + +bool EddyStoneUrl::setUrl(const char* url) +{ + _url = url; +} + +void EddyStoneUrl::setRssi(int8_t rssiAt0m) +{ + _rssi = rssiAt0m; +} + +char const* findExpansion(char const* p_url, uint8_t * p_idx) +{ + for(uint8_t i=0; i<EXPANNSION_COUNT; i++) + { + char const * substr = strstr(p_url, url_expansion[i]); + + if ( substr ) + { + *p_idx = i; + return substr; + } + } + + return NULL; +} + +bool EddyStoneUrl::start(void) +{ + enum { URL_MAXLEN = 17 }; + struct ATTR_PACKED { + uint16_t eddy_uuid; + + uint8_t frame_type; + int8_t rssi; + uint8_t url_scheme; + uint8_t urlencode[URL_MAXLEN]; + }eddy = + { + .eddy_uuid = UUID16_SVC_EDDYSTONE, + .frame_type = EDDYSTONE_TYPE_URL, + .rssi = _rssi, + .url_scheme = 0xff + }; + + const char* url = _url; + + // Detect url scheme + for(uint8_t i=0; i<PREFIX_COUNT; i++) + { + uint8_t prelen = strlen(prefix_scheme[i]); + if ( !memcmp(url, prefix_scheme[i], prelen) ) + { + eddy.url_scheme = i; + url += prelen; + + break; + } + } + VERIFY( eddy.url_scheme < PREFIX_COUNT ); + + // Encode url data + uint8_t len = 0; + + while(*url) + { + uint8_t ex_code; + char const * expansion = findExpansion(url, &ex_code); + + // copy url up to the found expansion, if expansion is found, one more + // byte must be reserved for it + uint8_t cp_num = (expansion) ? (expansion-url) : strlen(url); + if ( cp_num > URL_MAXLEN-(len + (expansion ? 1:0)) ) + { + LOG_LV1("EDDYS", "url is too long"); + return false; + } + + memcpy(eddy.urlencode+len, url, cp_num); + url += cp_num; + len += cp_num; + + // copy expansion code if found + if (expansion) + { + eddy.urlencode[len++] = ex_code; + url += strlen(url_expansion[ex_code]); + } + } + + // Add UUID16 list with EddyStone + VERIFY ( Bluefruit.Advertising.addUuid(UUID16_SVC_EDDYSTONE) ); + + // Add Eddystone Service Data + VERIFY ( Bluefruit.Advertising.addData(BLE_GAP_AD_TYPE_SERVICE_DATA, &eddy, len + 5) ); + + return true; +} |