Sam Musso / BLE_API

I don't know why this is happening.

Fork of BLE_API by Bluetooth Low Energy

services/URIBeacon2Service.h@149:6a7666d72a83, 2014-11-28 (annotated)

Committer:
rgrover1
Date:
Fri Nov 28 14:11:19 2014 +0000
Revision:
149:6a7666d72a83
Parent:
148:0072d73e966f
Child:
150:aa2d70369df0
Synchronized with git rev 3ea0f708

Author: Rohit Grover

add encodePrefix()

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rgrover1 147:f772d9b93808 1 /* mbed Microcontroller Library
rgrover1 147:f772d9b93808 2 * Copyright (c) 2006-2013 ARM Limited
rgrover1 147:f772d9b93808 3 *
rgrover1 147:f772d9b93808 4 * Licensed under the Apache License, Version 2.0 (the "License");
rgrover1 147:f772d9b93808 5 * you may not use this file except in compliance with the License.
rgrover1 147:f772d9b93808 6 * You may obtain a copy of the License at
rgrover1 147:f772d9b93808 7 *
rgrover1 147:f772d9b93808 8 * http://www.apache.org/licenses/LICENSE-2.0
rgrover1 147:f772d9b93808 9 *
rgrover1 147:f772d9b93808 10 * Unless required by applicable law or agreed to in writing, software
rgrover1 147:f772d9b93808 11 * distributed under the License is distributed on an "AS IS" BASIS,
rgrover1 147:f772d9b93808 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rgrover1 147:f772d9b93808 13 * See the License for the specific language governing permissions and
rgrover1 147:f772d9b93808 14 * limitations under the License.
rgrover1 147:f772d9b93808 15 */
rgrover1 147:f772d9b93808 16
rgrover1 147:f772d9b93808 17 #ifndef __BLE_URI_BEACON_2_SERVICE_H__
rgrover1 147:f772d9b93808 18 #define __BLE_URI_BEACON_2_SERVICE_H__
rgrover1 147:f772d9b93808 19
rgrover1 147:f772d9b93808 20 #include "BLEDevice.h"
rgrover1 147:f772d9b93808 21
rgrover1 147:f772d9b93808 22 class URIBeacon2Service {
rgrover1 147:f772d9b93808 23 public:
rgrover1 147:f772d9b93808 24
rgrover1 147:f772d9b93808 25 // ee0c2080-8786-40ba-ab96-99b91ac981d8
rgrover1 147:f772d9b93808 26
rgrover1 148:0072d73e966f 27 URIBeacon2Service(BLEDevice &ble_, const char *urldata, size_t sizeofURLData) : ble(ble_), payloadIndex(0), payload() {
rgrover1 147:f772d9b93808 28 if ((sizeofURLData + 4) > 24) {
rgrover1 147:f772d9b93808 29 return;
rgrover1 147:f772d9b93808 30 }
rgrover1 147:f772d9b93808 31
rgrover1 147:f772d9b93808 32 const uint8_t BEACON_UUID[] = {0xD8, 0xFE};
rgrover1 147:f772d9b93808 33
rgrover1 148:0072d73e966f 34 payload[payloadIndex++] = BEACON_UUID[0];
rgrover1 148:0072d73e966f 35 payload[payloadIndex++] = BEACON_UUID[1];
rgrover1 148:0072d73e966f 36 payload[payloadIndex++] = 0x00; /* flags */
rgrover1 148:0072d73e966f 37 payload[payloadIndex++] = 0x20; /* power */
rgrover1 148:0072d73e966f 38 size_t encodedBytes = encodeURIData(urldata, sizeofURLData);
rgrover1 147:f772d9b93808 39
rgrover1 147:f772d9b93808 40 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, BEACON_UUID, sizeof(BEACON_UUID));
rgrover1 148:0072d73e966f 41 ble.accumulateAdvertisingPayload(GapAdvertisingData::SERVICE_DATA, payload, encodedBytes + 4);
rgrover1 147:f772d9b93808 42 }
rgrover1 147:f772d9b93808 43
rgrover1 147:f772d9b93808 44 private:
rgrover1 148:0072d73e966f 45 size_t encodeURIData(const char *urldata, size_t sizeofURLData) {
rgrover1 148:0072d73e966f 46 if (sizeofURLData == 0) {
rgrover1 148:0072d73e966f 47 return 0;
rgrover1 148:0072d73e966f 48 }
rgrover1 148:0072d73e966f 49
rgrover1 149:6a7666d72a83 50 size_t encodedBytes = encodePrefix(urldata, sizeofURLData);
rgrover1 149:6a7666d72a83 51
rgrover1 149:6a7666d72a83 52 /* memcpy the rest for now. */
rgrover1 149:6a7666d72a83 53 memcpy(&payload[payloadIndex], urldata, sizeofURLData);
rgrover1 149:6a7666d72a83 54 encodedBytes += sizeofURLData;
rgrover1 149:6a7666d72a83 55 return encodedBytes;
rgrover1 149:6a7666d72a83 56 }
rgrover1 149:6a7666d72a83 57
rgrover1 149:6a7666d72a83 58 size_t encodePrefix(const char *&urldata, size_t &sizeofURLData) {
rgrover1 148:0072d73e966f 59 const char *prefixes[] = {
rgrover1 148:0072d73e966f 60 "http://www.",
rgrover1 148:0072d73e966f 61 "https://www.",
rgrover1 148:0072d73e966f 62 "http://",
rgrover1 148:0072d73e966f 63 "https://",
rgrover1 148:0072d73e966f 64 "urn:uuid:"
rgrover1 148:0072d73e966f 65 };
rgrover1 149:6a7666d72a83 66
rgrover1 148:0072d73e966f 67 size_t encodedBytes = 0;
rgrover1 148:0072d73e966f 68 const size_t NUM_PREFIXES = sizeof(prefixes) / sizeof(char *);
rgrover1 148:0072d73e966f 69 for (unsigned i = 0; i < NUM_PREFIXES; i++) {
rgrover1 148:0072d73e966f 70 size_t prefixLen = strlen(prefixes[i]);
rgrover1 148:0072d73e966f 71 if (strncmp(urldata, prefixes[i], prefixLen) == 0) {
rgrover1 148:0072d73e966f 72 payload[payloadIndex++] = i;
rgrover1 149:6a7666d72a83 73 encodedBytes = 1;
rgrover1 148:0072d73e966f 74
rgrover1 148:0072d73e966f 75 urldata += prefixLen;
rgrover1 148:0072d73e966f 76 sizeofURLData -= prefixLen;
rgrover1 148:0072d73e966f 77 break;
rgrover1 148:0072d73e966f 78 }
rgrover1 148:0072d73e966f 79 }
rgrover1 148:0072d73e966f 80
rgrover1 148:0072d73e966f 81 return encodedBytes;
rgrover1 147:f772d9b93808 82 }
rgrover1 147:f772d9b93808 83
rgrover1 147:f772d9b93808 84 // URIBeacon2Service(BLEDevice &_ble, uint8_t level = 100) :
rgrover1 147:f772d9b93808 85 // ble(_ble),
rgrover1 147:f772d9b93808 86 // batteryLevel(level),
rgrover1 147:f772d9b93808 87 // batteryLevelCharacteristic(GattCharacteristic::UUID_BATTERY_LEVEL_CHAR, &batteryLevel, sizeof(batteryLevel), sizeof(batteryLevel),
rgrover1 147:f772d9b93808 88 // GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY) {
rgrover1 147:f772d9b93808 89
rgrover1 147:f772d9b93808 90 // static bool serviceAdded = false; /* We should only ever need to add the heart rate service once. */
rgrover1 147:f772d9b93808 91 // if (serviceAdded) {
rgrover1 147:f772d9b93808 92 // return;
rgrover1 147:f772d9b93808 93 // }
rgrover1 147:f772d9b93808 94
rgrover1 147:f772d9b93808 95 // GattCharacteristic *charTable[] = {&batteryLevelCharacteristic};
rgrover1 147:f772d9b93808 96 // GattService batteryService(GattService::UUID_BATTERY_SERVICE, charTable, sizeof(charTable) / sizeof(GattCharacteristic *));
rgrover1 147:f772d9b93808 97
rgrover1 147:f772d9b93808 98 // ble.addService(batteryService);
rgrover1 147:f772d9b93808 99 // serviceAdded = true;
rgrover1 147:f772d9b93808 100 // }
rgrover1 147:f772d9b93808 101 //
rgrover1 147:f772d9b93808 102
rgrover1 147:f772d9b93808 103 private:
rgrover1 147:f772d9b93808 104 static const size_t MAX_SIZEOF_PAYLOAD = 32; /* TODO */
rgrover1 147:f772d9b93808 105
rgrover1 147:f772d9b93808 106 private:
rgrover1 147:f772d9b93808 107 BLEDevice &ble;
rgrover1 148:0072d73e966f 108
rgrover1 148:0072d73e966f 109 size_t payloadIndex;
rgrover1 147:f772d9b93808 110 uint8_t payload[MAX_SIZEOF_PAYLOAD];
rgrover1 147:f772d9b93808 111 // uint8_t batteryLevel;
rgrover1 147:f772d9b93808 112 // GattCharacteristic batteryLevelCharacteristic;
rgrover1 147:f772d9b93808 113 };
rgrover1 147:f772d9b93808 114
rgrover1 147:f772d9b93808 115 #endif /* #ifndef __BLE_URI_BEACON_2_SERVICE_H__*/