Bill Schilit / BLE_API

Improve readability with getHandle inline

Fork of BLE_API by Bluetooth Low Energy

services/URIBeacon2Service.h@160:155b28cb0e45, 2014-11-28 (annotated)

Committer:
rgrover1
Date:
Fri Nov 28 14:11:21 2014 +0000
Revision:
160:155b28cb0e45
Parent:
159:e915a0cebcce
Child:
161:f17b72db118e
Synchronized with git rev 6d5a5e36

Author: Rohit Grover

add support for onDataWritten for the URIValue characteristic.

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 159:e915a0cebcce 22 #define UUID_INITIALIZER_LIST(FIRST, SECOND) { \
rgrover1 159:e915a0cebcce 23 0xee, 0x0c, FIRST, SECOND, 0x87, 0x86, 0x40, 0xba, \
rgrover1 159:e915a0cebcce 24 0xab, 0x96, 0x99, 0xb9, 0x1a, 0xc9, 0x81, 0xd8, \
rgrover1 159:e915a0cebcce 25 }
rgrover1 159:e915a0cebcce 26 const uint8_t URIBeacon2ControlServiceUUID[] = UUID_INITIALIZER_LIST(0x20, 0x80);
rgrover1 159:e915a0cebcce 27 const uint8_t lockedStateCharUUID[] = UUID_INITIALIZER_LIST(0x20, 0x81);
rgrover1 159:e915a0cebcce 28 const uint8_t uriDataCharUUID[] = UUID_INITIALIZER_LIST(0x20, 0x84);
rgrover1 159:e915a0cebcce 29
rgrover1 147:f772d9b93808 30 class URIBeacon2Service {
rgrover1 147:f772d9b93808 31 public:
rgrover1 158:08f609d8a6d4 32 URIBeacon2Service(BLEDevice &ble_, const char *urldata, uint8_t flags_ = 0, uint8_t power_ = 0) :
rgrover1 158:08f609d8a6d4 33 ble(ble_), payloadIndex(0), serviceDataPayload(),
rgrover1 159:e915a0cebcce 34 lockedState(false),
rgrover1 158:08f609d8a6d4 35 uriDataLength(0),
rgrover1 158:08f609d8a6d4 36 uriDataValue(),
rgrover1 158:08f609d8a6d4 37 flags(flags_),
rgrover1 159:e915a0cebcce 38 power(power_),
rgrover1 159:e915a0cebcce 39 lockedStateChar(lockedStateCharUUID, (uint8_t *)&lockedState, 1, 1, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ),
rgrover1 159:e915a0cebcce 40 uriDataChar(uriDataCharUUID,
rgrover1 159:e915a0cebcce 41 uriDataValue,
rgrover1 159:e915a0cebcce 42 MAX_SIZE_URI_DATA_CHAR_VALUE,
rgrover1 159:e915a0cebcce 43 MAX_SIZE_URI_DATA_CHAR_VALUE,
rgrover1 159:e915a0cebcce 44 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE_WITHOUT_RESPONSE)
rgrover1 158:08f609d8a6d4 45 {
rgrover1 158:08f609d8a6d4 46 if ((urldata == NULL) || ((uriDataLength = strlen(urldata)) == 0)) {
rgrover1 158:08f609d8a6d4 47 return;
rgrover1 158:08f609d8a6d4 48 }
rgrover1 158:08f609d8a6d4 49 strncpy(reinterpret_cast<char *>(uriDataValue), urldata, MAX_SIZE_URI_DATA_CHAR_VALUE);
rgrover1 147:f772d9b93808 50
rgrover1 158:08f609d8a6d4 51 setup();
rgrover1 159:e915a0cebcce 52
rgrover1 159:e915a0cebcce 53 static bool serviceAdded = false; /* We should only ever need to add the heart rate service once. */
rgrover1 159:e915a0cebcce 54 if (serviceAdded) {
rgrover1 159:e915a0cebcce 55 return;
rgrover1 159:e915a0cebcce 56 }
rgrover1 159:e915a0cebcce 57
rgrover1 159:e915a0cebcce 58 GattCharacteristic *charTable[] = {&lockedStateChar, &uriDataChar};
rgrover1 159:e915a0cebcce 59 GattService beaconControlService(URIBeacon2ControlServiceUUID, charTable, sizeof(charTable) / sizeof(GattCharacteristic *));
rgrover1 159:e915a0cebcce 60
rgrover1 159:e915a0cebcce 61 ble.addService(beaconControlService);
rgrover1 159:e915a0cebcce 62 serviceAdded = true;
rgrover1 160:155b28cb0e45 63
rgrover1 160:155b28cb0e45 64 ble.onDataWritten(this, &URIBeacon2Service::onDataWritten);
rgrover1 147:f772d9b93808 65 }
rgrover1 147:f772d9b93808 66
rgrover1 160:155b28cb0e45 67 /**
rgrover1 160:155b28cb0e45 68 * This callback allows the DFU service to receive the initial trigger to
rgrover1 160:155b28cb0e45 69 * handover control to the bootloader; but first the application is given a
rgrover1 160:155b28cb0e45 70 * chance to clean up.
rgrover1 160:155b28cb0e45 71 */
rgrover1 160:155b28cb0e45 72 virtual void onDataWritten(const GattCharacteristicWriteCBParams *params) {
rgrover1 160:155b28cb0e45 73 if (params->charHandle == uriDataChar.getValueAttribute().getHandle()) {
rgrover1 160:155b28cb0e45 74 /* we don't handle very large writes at the moment. */
rgrover1 160:155b28cb0e45 75 if ((params->offset != 0) || (params->len > MAX_SIZE_URI_DATA_CHAR_VALUE)) {
rgrover1 160:155b28cb0e45 76 return;
rgrover1 160:155b28cb0e45 77 }
rgrover1 160:155b28cb0e45 78
rgrover1 160:155b28cb0e45 79 uriDataLength = params->len;
rgrover1 160:155b28cb0e45 80 memcpy(uriDataValue, params->data, uriDataLength);
rgrover1 160:155b28cb0e45 81 setup();
rgrover1 160:155b28cb0e45 82 ble.setAdvertisingPayload();
rgrover1 160:155b28cb0e45 83 }
rgrover1 160:155b28cb0e45 84 }
rgrover1 160:155b28cb0e45 85
rgrover1 160:155b28cb0e45 86 /**
rgrover1 160:155b28cb0e45 87 * for debugging only
rgrover1 160:155b28cb0e45 88 */
rgrover1 151:cb5df770f05b 89 void dumpEncodedSeviceData() const {
rgrover1 150:aa2d70369df0 90 printf("encoded: '");
rgrover1 150:aa2d70369df0 91 for (unsigned i = 0; i < payloadIndex; i++) {
rgrover1 151:cb5df770f05b 92 printf(" %02x", serviceDataPayload[i]);
rgrover1 150:aa2d70369df0 93 }
rgrover1 150:aa2d70369df0 94 printf("'\r\n");
rgrover1 150:aa2d70369df0 95 }
rgrover1 150:aa2d70369df0 96
rgrover1 147:f772d9b93808 97 private:
rgrover1 158:08f609d8a6d4 98 void setup(void) {
rgrover1 160:155b28cb0e45 99 const uint8_t BEACON_UUID[] = {0xD8, 0xFE};
rgrover1 148:0072d73e966f 100
rgrover1 160:155b28cb0e45 101 payloadIndex = 0;
rgrover1 158:08f609d8a6d4 102 serviceDataPayload[payloadIndex++] = BEACON_UUID[0];
rgrover1 158:08f609d8a6d4 103 serviceDataPayload[payloadIndex++] = BEACON_UUID[1];
rgrover1 158:08f609d8a6d4 104 serviceDataPayload[payloadIndex++] = flags;
rgrover1 158:08f609d8a6d4 105 serviceDataPayload[payloadIndex++] = power;
rgrover1 158:08f609d8a6d4 106
rgrover1 158:08f609d8a6d4 107 const char *urlData = reinterpret_cast<char *>(uriDataValue);
rgrover1 158:08f609d8a6d4 108 size_t sizeofURLData = uriDataLength;
rgrover1 158:08f609d8a6d4 109 size_t encodedBytes = encodeURISchemePrefix(urlData, sizeofURLData) + encodeURI(urlData, sizeofURLData);
rgrover1 158:08f609d8a6d4 110
rgrover1 160:155b28cb0e45 111 ble.clearAdvertisingPayload();
rgrover1 158:08f609d8a6d4 112 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, BEACON_UUID, sizeof(BEACON_UUID));
rgrover1 158:08f609d8a6d4 113 ble.accumulateAdvertisingPayload(GapAdvertisingData::SERVICE_DATA, serviceDataPayload, encodedBytes + 4);
rgrover1 160:155b28cb0e45 114
rgrover1 160:155b28cb0e45 115 ble.setTxPower(power);
rgrover1 149:6a7666d72a83 116 }
rgrover1 149:6a7666d72a83 117
rgrover1 151:cb5df770f05b 118 size_t encodeURISchemePrefix(const char *&urldata, size_t &sizeofURLData) {
rgrover1 148:0072d73e966f 119 const char *prefixes[] = {
rgrover1 148:0072d73e966f 120 "http://www.",
rgrover1 148:0072d73e966f 121 "https://www.",
rgrover1 148:0072d73e966f 122 "http://",
rgrover1 148:0072d73e966f 123 "https://",
rgrover1 148:0072d73e966f 124 "urn:uuid:"
rgrover1 148:0072d73e966f 125 };
rgrover1 149:6a7666d72a83 126
rgrover1 148:0072d73e966f 127 size_t encodedBytes = 0;
rgrover1 148:0072d73e966f 128 const size_t NUM_PREFIXES = sizeof(prefixes) / sizeof(char *);
rgrover1 148:0072d73e966f 129 for (unsigned i = 0; i < NUM_PREFIXES; i++) {
rgrover1 148:0072d73e966f 130 size_t prefixLen = strlen(prefixes[i]);
rgrover1 148:0072d73e966f 131 if (strncmp(urldata, prefixes[i], prefixLen) == 0) {
rgrover1 151:cb5df770f05b 132 serviceDataPayload[payloadIndex++] = i;
rgrover1 149:6a7666d72a83 133 encodedBytes = 1;
rgrover1 148:0072d73e966f 134
rgrover1 148:0072d73e966f 135 urldata += prefixLen;
rgrover1 148:0072d73e966f 136 sizeofURLData -= prefixLen;
rgrover1 148:0072d73e966f 137 break;
rgrover1 148:0072d73e966f 138 }
rgrover1 148:0072d73e966f 139 }
rgrover1 148:0072d73e966f 140
rgrover1 148:0072d73e966f 141 return encodedBytes;
rgrover1 147:f772d9b93808 142 }
rgrover1 147:f772d9b93808 143
rgrover1 151:cb5df770f05b 144 size_t encodeURI(const char *urldata, size_t sizeofURLData) {
rgrover1 150:aa2d70369df0 145 const char *suffixes[] = {
rgrover1 150:aa2d70369df0 146 ".com/",
rgrover1 150:aa2d70369df0 147 ".org/",
rgrover1 150:aa2d70369df0 148 ".edu/",
rgrover1 150:aa2d70369df0 149 ".net/",
rgrover1 150:aa2d70369df0 150 ".info/",
rgrover1 150:aa2d70369df0 151 ".biz/",
rgrover1 150:aa2d70369df0 152 ".gov/",
rgrover1 150:aa2d70369df0 153 ".com",
rgrover1 150:aa2d70369df0 154 ".org",
rgrover1 150:aa2d70369df0 155 ".edu",
rgrover1 150:aa2d70369df0 156 ".net",
rgrover1 150:aa2d70369df0 157 ".info",
rgrover1 150:aa2d70369df0 158 ".biz",
rgrover1 150:aa2d70369df0 159 ".gov"
rgrover1 150:aa2d70369df0 160 };
rgrover1 150:aa2d70369df0 161 const size_t NUM_SUFFIXES = sizeof(suffixes) / sizeof(char *);
rgrover1 150:aa2d70369df0 162
rgrover1 150:aa2d70369df0 163 size_t encodedBytes = 0;
rgrover1 155:a3fafce0bc0b 164 while (sizeofURLData && (payloadIndex < MAX_SIZEOF_SERVICE_DATA_PAYLOAD)) {
rgrover1 150:aa2d70369df0 165 /* check for suffix match */
rgrover1 150:aa2d70369df0 166 unsigned i;
rgrover1 150:aa2d70369df0 167 for (i = 0; i < NUM_SUFFIXES; i++) {
rgrover1 150:aa2d70369df0 168 size_t suffixLen = strlen(suffixes[i]);
rgrover1 150:aa2d70369df0 169 if ((suffixLen == 0) || (sizeofURLData < suffixLen)) {
rgrover1 150:aa2d70369df0 170 continue;
rgrover1 150:aa2d70369df0 171 }
rgrover1 150:aa2d70369df0 172
rgrover1 150:aa2d70369df0 173 if (strncmp(urldata, suffixes[i], suffixLen) == 0) {
rgrover1 151:cb5df770f05b 174 serviceDataPayload[payloadIndex++] = i;
rgrover1 150:aa2d70369df0 175 ++encodedBytes;
rgrover1 150:aa2d70369df0 176 urldata += suffixLen;
rgrover1 150:aa2d70369df0 177 sizeofURLData -= suffixLen;
rgrover1 150:aa2d70369df0 178 break; /* from the for loop for checking against suffixes */
rgrover1 150:aa2d70369df0 179 }
rgrover1 150:aa2d70369df0 180 }
rgrover1 150:aa2d70369df0 181 /* This is the default case where we've got an ordinary character which doesn't match a suffix. */
rgrover1 150:aa2d70369df0 182 if (i == NUM_SUFFIXES) {
rgrover1 151:cb5df770f05b 183 serviceDataPayload[payloadIndex++] = *urldata;
rgrover1 150:aa2d70369df0 184 ++encodedBytes;
rgrover1 150:aa2d70369df0 185 ++urldata;
rgrover1 150:aa2d70369df0 186 --sizeofURLData;
rgrover1 150:aa2d70369df0 187 }
rgrover1 150:aa2d70369df0 188 }
rgrover1 150:aa2d70369df0 189
rgrover1 150:aa2d70369df0 190 return encodedBytes;
rgrover1 150:aa2d70369df0 191 }
rgrover1 150:aa2d70369df0 192
rgrover1 147:f772d9b93808 193 private:
rgrover1 157:8bd620881bc9 194 static const size_t MAX_SIZEOF_SERVICE_DATA_PAYLOAD = 27;
rgrover1 158:08f609d8a6d4 195 static const size_t MAX_SIZE_URI_DATA_CHAR_VALUE = 48;
rgrover1 147:f772d9b93808 196
rgrover1 147:f772d9b93808 197 private:
rgrover1 147:f772d9b93808 198 BLEDevice &ble;
rgrover1 148:0072d73e966f 199
rgrover1 158:08f609d8a6d4 200 size_t payloadIndex;
rgrover1 158:08f609d8a6d4 201 uint8_t serviceDataPayload[MAX_SIZEOF_SERVICE_DATA_PAYLOAD];
rgrover1 159:e915a0cebcce 202 bool lockedState;
rgrover1 158:08f609d8a6d4 203 uint16_t uriDataLength;
rgrover1 158:08f609d8a6d4 204 uint8_t uriDataValue[MAX_SIZE_URI_DATA_CHAR_VALUE];
rgrover1 158:08f609d8a6d4 205 uint8_t flags;
rgrover1 158:08f609d8a6d4 206 uint8_t power;
rgrover1 159:e915a0cebcce 207
rgrover1 159:e915a0cebcce 208 GattCharacteristic lockedStateChar;
rgrover1 159:e915a0cebcce 209 GattCharacteristic uriDataChar;
rgrover1 147:f772d9b93808 210 };
rgrover1 147:f772d9b93808 211
rgrover1 147:f772d9b93808 212 #endif /* #ifndef __BLE_URI_BEACON_2_SERVICE_H__*/