Ida Bosch / PuckLight

Press buttons to activate the LED.

Dependencies:   BLE_API nRF51822

Fork of Puck by Nordic Pucks

Puck.h@22:7d728fed55ab, 2015-03-03 (annotated)

Committer:
sigveseb
Date:
Tue Mar 03 22:17:17 2015 +0000
Revision:
22:7d728fed55ab
Parent:
21:00a3567124e3
Child:
24:21b5ecbc84ea
Add CharacteristicWriteCallback documentation

Who changed what in which revision?

UserRevisionLine numberNew contents of line
cristea 12:8a8cc109f048 1 /**
cristea 12:8a8cc109f048 2 * Copyright 2014 Nordic Semiconductor
cristea 12:8a8cc109f048 3 *
cristea 12:8a8cc109f048 4 * Licensed under the Apache License, Version 2.0 (the "License");
cristea 12:8a8cc109f048 5 * you may not use this file except in compliance with the License.
cristea 12:8a8cc109f048 6 * You may obtain a copy of the License at
cristea 12:8a8cc109f048 7 *
cristea 12:8a8cc109f048 8 * http://www.apache.org/licenses/LICENSE-2.0
cristea 12:8a8cc109f048 9 *
cristea 12:8a8cc109f048 10 * Unless required by applicable law or agreed to in writing, software
cristea 12:8a8cc109f048 11 * distributed under the License is distributed on an "AS IS" BASIS,
cristea 12:8a8cc109f048 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
cristea 12:8a8cc109f048 13 * See the License for the specific language governing permissions and
cristea 12:8a8cc109f048 14 * limitations under the License
cristea 12:8a8cc109f048 15 */
cristea 12:8a8cc109f048 16
cristea 12:8a8cc109f048 17
sigveseb 3:5432b38585ea 18 #ifndef __PUCK_HPP__
sigveseb 3:5432b38585ea 19 #define __PUCK_HPP__
sigveseb 3:5432b38585ea 20
sigveseb 3:5432b38585ea 21 #include "BLEDevice.h"
aleksanb 14:9eda2d99fc1d 22 #include "mbed.h"
aleksanb 14:9eda2d99fc1d 23 #include "Log.h"
sigveseb 3:5432b38585ea 24 #include <vector>
sigveseb 3:5432b38585ea 25
sigveseb 9:ba0527c6b6d0 26 enum PuckState {
sigveseb 3:5432b38585ea 27 CONNECTING,
sigveseb 3:5432b38585ea 28 CONNECTED,
sigveseb 3:5432b38585ea 29 ADVERTISING,
sigveseb 3:5432b38585ea 30 DISCONNECTED
sigveseb 3:5432b38585ea 31 };
sigveseb 3:5432b38585ea 32
sigveseb 3:5432b38585ea 33 const UUID stringToUUID(const char* str);
sigveseb 3:5432b38585ea 34
sigveseb 15:bfc682889c15 35 typedef void (*CharacteristicWriteCallback)(const uint8_t* value, uint8_t length);
sigveseb 3:5432b38585ea 36
sigveseb 3:5432b38585ea 37 typedef struct {
sigveseb 3:5432b38585ea 38 const UUID* uuid;
sigveseb 3:5432b38585ea 39 std::vector<CharacteristicWriteCallback>* callbacks;
sigveseb 3:5432b38585ea 40 } CharacteristicWriteCallbacks;
sigveseb 3:5432b38585ea 41
aleksanb 17:23a05bd2fe2b 42 /**
aleksanb 17:23a05bd2fe2b 43 * @brief A library for easier setup and prototyping of IoT devices (pucks), by collecting everything that is common for all pucks in one place.
aleksanb 16:fb8678ee25b0 44 *
aleksanb 16:fb8678ee25b0 45 */
sigveseb 3:5432b38585ea 46 class Puck {
sigveseb 3:5432b38585ea 47 private:
sigveseb 3:5432b38585ea 48 Puck() {}
sigveseb 3:5432b38585ea 49 Puck(const Puck&);
sigveseb 3:5432b38585ea 50 Puck& operator=(const Puck&);
sigveseb 3:5432b38585ea 51
sigveseb 3:5432b38585ea 52 BLEDevice ble;
sigveseb 3:5432b38585ea 53 uint8_t beaconPayload[25];
sigveseb 3:5432b38585ea 54 PuckState state;
sigveseb 3:5432b38585ea 55 std::vector<GattService*> services;
sigveseb 3:5432b38585ea 56 std::vector<GattCharacteristic*> characteristics;
sigveseb 3:5432b38585ea 57 std::vector<CharacteristicWriteCallbacks*> writeCallbacks;
sigveseb 3:5432b38585ea 58 std::vector<CharacteristicWriteCallback> pendingCallbackStack;
sigveseb 15:bfc682889c15 59 std::vector<const uint8_t*> pendingCallbackParameterDataStack;
sigveseb 15:bfc682889c15 60 std::vector<uint8_t> pendingCallbackParameterLengthStack;
sigveseb 3:5432b38585ea 61
stiaje 4:91506772210d 62 GattCharacteristic **previousCharacteristics;
stiaje 4:91506772210d 63
sigveseb 3:5432b38585ea 64 public:
sigveseb 3:5432b38585ea 65 static Puck &getPuck();
sigveseb 3:5432b38585ea 66
stiaje 5:2f2a2ac6b231 67 BLEDevice &getBle() { return ble; }
sigveseb 3:5432b38585ea 68 PuckState getState() { return state; }
sigveseb 3:5432b38585ea 69 void setState(PuckState state);
sigveseb 3:5432b38585ea 70 void init(uint16_t minor);
sigveseb 3:5432b38585ea 71 void startAdvertising();
sigveseb 3:5432b38585ea 72 void stopAdvertising();
sigveseb 9:ba0527c6b6d0 73 void disconnect();
sigveseb 3:5432b38585ea 74 bool drive();
sigveseb 9:ba0527c6b6d0 75 int countFreeMemory();
sigveseb 15:bfc682889c15 76 void onDataWritten(GattAttribute::Handle_t handle, const uint8_t* data, const uint8_t length);
sigveseb 3:5432b38585ea 77 void addCharacteristic(const UUID serviceUuid, const UUID characteristicUuid, int bytes, int properties = 0xA);
stiaje 10:67e4694f2d74 78
sigveseb 9:ba0527c6b6d0 79 void onCharacteristicWrite(const UUID* uuid, CharacteristicWriteCallback callback);
sigveseb 8:49ffd38fb401 80 void updateCharacteristicValue(const UUID uuid, uint8_t* value, int length);
stiaje 10:67e4694f2d74 81
sigveseb 3:5432b38585ea 82 uint8_t* getCharacteristicValue(const UUID uuid);
sigveseb 3:5432b38585ea 83 };
sigveseb 3:5432b38585ea 84
aleksanb 16:fb8678ee25b0 85 /**
aleksanb 16:fb8678ee25b0 86 * @brief Returns singleton instance of puck object.
aleksanb 16:fb8678ee25b0 87 *
aleksanb 16:fb8678ee25b0 88 * @return singleton instance of puck object.
aleksanb 16:fb8678ee25b0 89 */
sigveseb 3:5432b38585ea 90 Puck &Puck::getPuck() {
sigveseb 3:5432b38585ea 91 static Puck _puckSingletonInstance;
sigveseb 3:5432b38585ea 92 return _puckSingletonInstance;
sigveseb 3:5432b38585ea 93 }
sigveseb 3:5432b38585ea 94
aleksanb 14:9eda2d99fc1d 95 void onDisconnection(Gap::Handle_t handle, Gap::DisconnectionReason_t disconnectReason) {
sigveseb 3:5432b38585ea 96 LOG_INFO("Disconnected.\n");
sigveseb 3:5432b38585ea 97 Puck::getPuck().setState(DISCONNECTED);
sigveseb 3:5432b38585ea 98 }
sigveseb 3:5432b38585ea 99
aleksanb 14:9eda2d99fc1d 100 void onConnection(Gap::Handle_t handle,
aleksanb 14:9eda2d99fc1d 101 Gap::addr_type_t peerAddrType,
aleksanb 14:9eda2d99fc1d 102 const Gap::address_t peerAddr,
aleksanb 14:9eda2d99fc1d 103 const Gap::ConnectionParams_t * connectionParams) {
sigveseb 3:5432b38585ea 104 LOG_INFO("Connected.\n");
sigveseb 3:5432b38585ea 105 Puck::getPuck().setState(CONNECTED);
sigveseb 3:5432b38585ea 106 }
sigveseb 3:5432b38585ea 107
aleksanb 14:9eda2d99fc1d 108 void onDataWrittenCallback(const GattCharacteristicWriteCBParams *context) {
sigveseb 15:bfc682889c15 109 Puck::getPuck().onDataWritten(context->charHandle, context->data, context->len);
sigveseb 3:5432b38585ea 110 }
sigveseb 3:5432b38585ea 111
sigveseb 3:5432b38585ea 112 bool isEqualUUID(const UUID* uuidA, const UUID uuidB) {
sigveseb 3:5432b38585ea 113 const uint8_t* uuidABase = uuidA->getBaseUUID();
sigveseb 3:5432b38585ea 114 const uint8_t* uuidBBase = uuidB.getBaseUUID();
sigveseb 9:ba0527c6b6d0 115
sigveseb 3:5432b38585ea 116 for(int i = 0; i < 16; i++) {
sigveseb 3:5432b38585ea 117 if(uuidABase[i] != uuidBBase[i]) {
sigveseb 3:5432b38585ea 118 return false;
sigveseb 3:5432b38585ea 119 }
sigveseb 3:5432b38585ea 120 }
sigveseb 9:ba0527c6b6d0 121 if(uuidA->getShortUUID() != uuidB.getShortUUID()) {
sigveseb 9:ba0527c6b6d0 122 return false;
sigveseb 9:ba0527c6b6d0 123 }
sigveseb 3:5432b38585ea 124 return true;
sigveseb 3:5432b38585ea 125 }
sigveseb 3:5432b38585ea 126
aleksanb 16:fb8678ee25b0 127 /**
aleksanb 16:fb8678ee25b0 128 * @brief Returns UUID representation of a 16-character string.
aleksanb 16:fb8678ee25b0 129 *
aleksanb 16:fb8678ee25b0 130 */
sigveseb 3:5432b38585ea 131 const UUID stringToUUID(const char* str) {
sigveseb 3:5432b38585ea 132 uint8_t array[16];
sigveseb 3:5432b38585ea 133 for(int i = 0; i < 16; i++) {
sigveseb 3:5432b38585ea 134 array[i] = str[i];
sigveseb 3:5432b38585ea 135 }
sigveseb 3:5432b38585ea 136 return UUID(array);
sigveseb 3:5432b38585ea 137 }
sigveseb 3:5432b38585ea 138
sigveseb 9:ba0527c6b6d0 139 void Puck::disconnect() {
aleksanb 14:9eda2d99fc1d 140 ble.disconnect(Gap::LOCAL_HOST_TERMINATED_CONNECTION);
sigveseb 9:ba0527c6b6d0 141 }
sigveseb 9:ba0527c6b6d0 142
aleksanb 16:fb8678ee25b0 143 /**
aleksanb 16:fb8678ee25b0 144 * @brief Approximates malloc-able heap space. Do not use in production code, as it may crash.
aleksanb 16:fb8678ee25b0 145 *
aleksanb 16:fb8678ee25b0 146 */
sigveseb 9:ba0527c6b6d0 147 int Puck::countFreeMemory() {
sigveseb 9:ba0527c6b6d0 148 int blocksize = 256;
sigveseb 9:ba0527c6b6d0 149 int amount = 0;
sigveseb 9:ba0527c6b6d0 150 while (blocksize > 0) {
sigveseb 9:ba0527c6b6d0 151 amount += blocksize;
sigveseb 9:ba0527c6b6d0 152 LOG_VERBOSE("Trying to malloc %i bytes... ", amount);
sigveseb 9:ba0527c6b6d0 153 char *p = (char *) malloc(amount);
sigveseb 9:ba0527c6b6d0 154 if (p == NULL) {
sigveseb 9:ba0527c6b6d0 155 LOG_VERBOSE("FAIL!\n", amount);
sigveseb 9:ba0527c6b6d0 156 amount -= blocksize;
sigveseb 9:ba0527c6b6d0 157 blocksize /= 2;
sigveseb 9:ba0527c6b6d0 158 } else {
sigveseb 9:ba0527c6b6d0 159 free(p);
sigveseb 9:ba0527c6b6d0 160 LOG_VERBOSE("OK!\n", amount);
sigveseb 9:ba0527c6b6d0 161 }
sigveseb 9:ba0527c6b6d0 162 }
sigveseb 9:ba0527c6b6d0 163 LOG_DEBUG("Free memory: %i bytes.\n", amount);
sigveseb 9:ba0527c6b6d0 164 return amount;
sigveseb 9:ba0527c6b6d0 165 }
sigveseb 9:ba0527c6b6d0 166
sigveseb 3:5432b38585ea 167 void Puck::setState(PuckState state) {
sigveseb 3:5432b38585ea 168 LOG_DEBUG("Changed state to %i\n", state);
sigveseb 3:5432b38585ea 169 this->state = state;
sigveseb 3:5432b38585ea 170 }
sigveseb 3:5432b38585ea 171
aleksanb 16:fb8678ee25b0 172 /**
aleksanb 16:fb8678ee25b0 173 * @brief Call after finishing configuring puck (adding services, characteristics, callbacks).
aleksanb 16:fb8678ee25b0 174 Starts advertising over bluetooth le.
aleksanb 16:fb8678ee25b0 175 *
aleksanb 16:fb8678ee25b0 176 * @parameter minor
aleksanb 16:fb8678ee25b0 177 * Minor number to use for iBeacon identifier.
aleksanb 16:fb8678ee25b0 178 *
aleksanb 16:fb8678ee25b0 179 */
sigveseb 3:5432b38585ea 180 void Puck::init(uint16_t minor) {
stiaje 18:4c95a470d778 181 /*
sigveseb 3:5432b38585ea 182 * The Beacon payload (encapsulated within the MSD advertising data structure)
sigveseb 3:5432b38585ea 183 * has the following composition:
sigveseb 3:5432b38585ea 184 * 128-Bit UUID = E2 0A 39 F4 73 F5 4B C4 A1 2F 17 D1 AD 07 A9 61
sigveseb 3:5432b38585ea 185 * Major/Minor = 1337 / XXXX
sigveseb 3:5432b38585ea 186 * Tx Power = C8
sigveseb 3:5432b38585ea 187 */
sigveseb 3:5432b38585ea 188 uint8_t beaconPayloadTemplate[] = {
sigveseb 3:5432b38585ea 189 0x00, 0x00, // Company identifier code (0x004C == Apple)
sigveseb 3:5432b38585ea 190 0x02, // ID
sigveseb 3:5432b38585ea 191 0x15, // length of the remaining payload
sigveseb 3:5432b38585ea 192 0xE2, 0x0A, 0x39, 0xF4, 0x73, 0xF5, 0x4B, 0xC4, // UUID
sigveseb 3:5432b38585ea 193 0xA1, 0x2F, 0x17, 0xD1, 0xAD, 0x07, 0xA9, 0x61,
sigveseb 3:5432b38585ea 194 0x13, 0x37, // the major value to differenciate a location (Our app requires 1337 as major number)
sigveseb 3:5432b38585ea 195 0x00, 0x00, // the minor value to differenciate a location (Change this to differentiate location pucks)
sigveseb 3:5432b38585ea 196 0xC8 // 2's complement of the Tx power (-56dB)
sigveseb 3:5432b38585ea 197 };
sigveseb 3:5432b38585ea 198 beaconPayloadTemplate[22] = minor >> 8;
sigveseb 3:5432b38585ea 199 beaconPayloadTemplate[23] = minor & 255;
sigveseb 3:5432b38585ea 200
sigveseb 3:5432b38585ea 201 for (int i=0; i < 25; i++) {
sigveseb 3:5432b38585ea 202 beaconPayload[i] = beaconPayloadTemplate[i];
sigveseb 3:5432b38585ea 203 }
sigveseb 3:5432b38585ea 204
sigveseb 3:5432b38585ea 205 ble.init();
sigveseb 9:ba0527c6b6d0 206 LOG_DEBUG("Inited BLEDevice.\n");
sigveseb 3:5432b38585ea 207 setState(DISCONNECTED);
sigveseb 20:29b0143f3af3 208
sigveseb 20:29b0143f3af3 209 char deviceName[10];
sigveseb 20:29b0143f3af3 210 sprintf(&deviceName[0], "Puck %04X", minor);
sigveseb 20:29b0143f3af3 211 deviceName[9] = '\0';
sigveseb 20:29b0143f3af3 212 ble.setDeviceName((const uint8_t*) deviceName);
sigveseb 20:29b0143f3af3 213
sigveseb 3:5432b38585ea 214 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
sigveseb 9:ba0527c6b6d0 215 LOG_DEBUG("Accumulate advertising payload: BREDR_NOT_SUPPORTED.\n");
sigveseb 3:5432b38585ea 216
sigveseb 21:00a3567124e3 217 ble.accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, beaconPayload, sizeof(beaconPayload));
sigveseb 9:ba0527c6b6d0 218 LOG_DEBUG("Accumulate advertising payload: beacon data.\n");
sigveseb 3:5432b38585ea 219
sigveseb 3:5432b38585ea 220 ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
sigveseb 9:ba0527c6b6d0 221 LOG_DEBUG("Setting advertising type: ADV_CONNECTABLE_UNDIRECTED.\n");
sigveseb 3:5432b38585ea 222
sigveseb 3:5432b38585ea 223 int hundredMillisecondsInAdvertisingIntervalFormat = 160;
sigveseb 3:5432b38585ea 224 ble.setAdvertisingInterval(hundredMillisecondsInAdvertisingIntervalFormat);
sigveseb 9:ba0527c6b6d0 225 LOG_DEBUG("Set advertising interval: 160 (100 ms).\n");
sigveseb 3:5432b38585ea 226
sigveseb 3:5432b38585ea 227 ble.onDisconnection(onDisconnection);
sigveseb 3:5432b38585ea 228 ble.onConnection(onConnection);
sigveseb 3:5432b38585ea 229 ble.onDataWritten(onDataWrittenCallback);
sigveseb 9:ba0527c6b6d0 230 LOG_DEBUG("Hooked up internal event handlers.\n");
sigveseb 3:5432b38585ea 231
sigveseb 3:5432b38585ea 232 for(int i = 0; i < services.size(); i++) {
sigveseb 3:5432b38585ea 233 ble.addService(*services[i]);
sigveseb 9:ba0527c6b6d0 234 LOG_DEBUG("Added service %x to BLEDevice\n", services[i]);
sigveseb 3:5432b38585ea 235 }
sigveseb 3:5432b38585ea 236
sigveseb 3:5432b38585ea 237 LOG_INFO("Inited puck as 0x%X.\n", minor);
sigveseb 3:5432b38585ea 238 }
sigveseb 3:5432b38585ea 239
sigveseb 3:5432b38585ea 240 void Puck::startAdvertising() {
sigveseb 3:5432b38585ea 241 ble.startAdvertising();
sigveseb 3:5432b38585ea 242 LOG_INFO("Starting to advertise.\n");
sigveseb 3:5432b38585ea 243 setState(ADVERTISING);
sigveseb 3:5432b38585ea 244 }
sigveseb 3:5432b38585ea 245
sigveseb 3:5432b38585ea 246 void Puck::stopAdvertising() {
sigveseb 3:5432b38585ea 247 if(state == ADVERTISING) {
sigveseb 3:5432b38585ea 248 ble.stopAdvertising();
sigveseb 3:5432b38585ea 249 LOG_INFO("Stopped advertising.\n");
sigveseb 3:5432b38585ea 250 setState(DISCONNECTED);
sigveseb 3:5432b38585ea 251 } else {
sigveseb 3:5432b38585ea 252 LOG_WARN("Tried to stop advertising, but advertising is already stopped!\n");
sigveseb 3:5432b38585ea 253 }
sigveseb 3:5432b38585ea 254 }
sigveseb 3:5432b38585ea 255
aleksanb 16:fb8678ee25b0 256 /**
aleksanb 16:fb8678ee25b0 257 * @brief Extends the given gatt service with the given gatt characteristic.
aleksanb 16:fb8678ee25b0 258 * If the service doesn't exist, it is created.
aleksanb 16:fb8678ee25b0 259 *
aleksanb 16:fb8678ee25b0 260 * @param serviceUuid
aleksanb 16:fb8678ee25b0 261 UUID of the gatt service to be extended.
aleksanb 16:fb8678ee25b0 262 *
aleksanb 16:fb8678ee25b0 263 * @param characteristicUuid
aleksanb 16:fb8678ee25b0 264 * UUID to use for this characteristic.
aleksanb 16:fb8678ee25b0 265 *
aleksanb 16:fb8678ee25b0 266 * @param bytes
aleksanb 16:fb8678ee25b0 267 * Length in bytes of this characteristic's value.
aleksanb 16:fb8678ee25b0 268 *
aleksanb 16:fb8678ee25b0 269 * @param properties
aleksanb 16:fb8678ee25b0 270 * 8-bit bit field containing the characteristic's properties. See @ref ble_gatt_char_properties_t.
aleksanb 16:fb8678ee25b0 271 *
aleksanb 16:fb8678ee25b0 272 * @return Void.
aleksanb 16:fb8678ee25b0 273 */
sigveseb 3:5432b38585ea 274 void Puck::addCharacteristic(const UUID serviceUuid, const UUID characteristicUuid, int bytes, int properties) {
sigveseb 3:5432b38585ea 275 MBED_ASSERT(bytes <= 20);
sigveseb 3:5432b38585ea 276 uint16_t size = sizeof(uint8_t) * bytes;
sigveseb 3:5432b38585ea 277 uint8_t* value = (uint8_t*) malloc(size);
sigveseb 9:ba0527c6b6d0 278 if(value == NULL) {
sigveseb 9:ba0527c6b6d0 279 LOG_ERROR("Unable to malloc value for characteristic. Possibly out of memory!\n");
sigveseb 9:ba0527c6b6d0 280 }
sigveseb 9:ba0527c6b6d0 281
sigveseb 3:5432b38585ea 282 GattCharacteristic* characteristic = new GattCharacteristic(characteristicUuid, value, size, size, properties);
sigveseb 3:5432b38585ea 283 characteristics.push_back(characteristic);
sigveseb 9:ba0527c6b6d0 284
sigveseb 9:ba0527c6b6d0 285
sigveseb 3:5432b38585ea 286 GattService* service = NULL;
sigveseb 9:ba0527c6b6d0 287
sigveseb 3:5432b38585ea 288 int removeIndex = -1;
sigveseb 3:5432b38585ea 289 for(int i = 0; i < services.size(); i++) {
sigveseb 3:5432b38585ea 290 if(isEqualUUID(&services[i]->getUUID(), serviceUuid)) {
sigveseb 3:5432b38585ea 291 service = services[i];
sigveseb 3:5432b38585ea 292 removeIndex = i;
sigveseb 3:5432b38585ea 293 break;
sigveseb 3:5432b38585ea 294 }
sigveseb 3:5432b38585ea 295 }
sigveseb 3:5432b38585ea 296 GattCharacteristic** characteristics = NULL;
sigveseb 3:5432b38585ea 297 int characteristicsLength = 0;
sigveseb 3:5432b38585ea 298 if(service != NULL) {
sigveseb 3:5432b38585ea 299 characteristicsLength = service->getCharacteristicCount() + 1;
sigveseb 3:5432b38585ea 300 characteristics = (GattCharacteristic**) malloc(sizeof(GattCharacteristic*) * characteristicsLength);
sigveseb 9:ba0527c6b6d0 301 if(characteristics == NULL) {
sigveseb 9:ba0527c6b6d0 302 LOG_ERROR("Unable to malloc array of characteristics for service creation. Possibly out of memory!\n");
sigveseb 9:ba0527c6b6d0 303 }
sigveseb 3:5432b38585ea 304 for(int i = 0; i < characteristicsLength; i++) {
sigveseb 3:5432b38585ea 305 characteristics[i] = service->getCharacteristic(i);
sigveseb 3:5432b38585ea 306 }
sigveseb 3:5432b38585ea 307 services.erase(services.begin() + removeIndex);
sigveseb 3:5432b38585ea 308 delete service;
stiaje 4:91506772210d 309 free(previousCharacteristics);
sigveseb 3:5432b38585ea 310 } else {
sigveseb 3:5432b38585ea 311 characteristicsLength = 1;
sigveseb 3:5432b38585ea 312 characteristics = (GattCharacteristic**) malloc(sizeof(GattCharacteristic*) * characteristicsLength);
sigveseb 9:ba0527c6b6d0 313 if(characteristics == NULL) {
sigveseb 9:ba0527c6b6d0 314 LOG_ERROR("Unable to malloc array of characteristics for service creation. Possibly out of memory!\n");
sigveseb 9:ba0527c6b6d0 315 }
sigveseb 3:5432b38585ea 316 }
sigveseb 9:ba0527c6b6d0 317
sigveseb 3:5432b38585ea 318 characteristics[characteristicsLength - 1] = characteristic;
stiaje 4:91506772210d 319 previousCharacteristics = characteristics;
sigveseb 3:5432b38585ea 320 service = new GattService(serviceUuid, characteristics, characteristicsLength);
sigveseb 3:5432b38585ea 321 services.push_back(service);
sigveseb 9:ba0527c6b6d0 322 LOG_DEBUG("Added characteristic.\n");
sigveseb 3:5432b38585ea 323 }
sigveseb 3:5432b38585ea 324
stiaje 18:4c95a470d778 325
aleksanb 16:fb8678ee25b0 326 /**
aleksanb 16:fb8678ee25b0 327 * @brief Update the value of the given gatt characteristic.
aleksanb 16:fb8678ee25b0 328 *
aleksanb 16:fb8678ee25b0 329 * @param uuid
aleksanb 16:fb8678ee25b0 330 UUID of the gatt characteristic to be updated.
aleksanb 16:fb8678ee25b0 331 *
aleksanb 16:fb8678ee25b0 332 * @param value
aleksanb 16:fb8678ee25b0 333 * New value of the characteristic.
aleksanb 16:fb8678ee25b0 334 *
aleksanb 16:fb8678ee25b0 335 * @param length
aleksanb 16:fb8678ee25b0 336 * Length in bytes of the characteristic's value.
aleksanb 16:fb8678ee25b0 337 *
aleksanb 16:fb8678ee25b0 338 * @return Void.
aleksanb 16:fb8678ee25b0 339 */
sigveseb 8:49ffd38fb401 340 void Puck::updateCharacteristicValue(const UUID uuid, uint8_t* value, int length) {
sigveseb 8:49ffd38fb401 341 GattCharacteristic* characteristic = NULL;
aleksanb 14:9eda2d99fc1d 342 for(int i = 0; i < characteristics.size(); i++) {
aleksanb 14:9eda2d99fc1d 343 GattAttribute &gattAttribute = characteristics[i]->getValueAttribute();
aleksanb 14:9eda2d99fc1d 344 if(isEqualUUID(&gattAttribute.getUUID(), uuid)) {
sigveseb 8:49ffd38fb401 345 characteristic = characteristics[i];
aleksanb 14:9eda2d99fc1d 346 break;
aleksanb 14:9eda2d99fc1d 347 }
sigveseb 8:49ffd38fb401 348 }
sigveseb 8:49ffd38fb401 349 if(characteristic != NULL) {
aleksanb 14:9eda2d99fc1d 350 ble.updateCharacteristicValue(characteristic->getValueHandle(), value, length);
sigveseb 8:49ffd38fb401 351 LOG_VERBOSE("Updated characteristic value.\n");
sigveseb 8:49ffd38fb401 352 } else {
sigveseb 8:49ffd38fb401 353 LOG_WARN("Tried to update an unkown characteristic!\n");
sigveseb 8:49ffd38fb401 354 }
sigveseb 8:49ffd38fb401 355 }
sigveseb 8:49ffd38fb401 356
aleksanb 16:fb8678ee25b0 357 /**
aleksanb 16:fb8678ee25b0 358 * @brief Pass control to the bluetooth stack, executing pending callbacks afterwards. Should be used inside a while condition loop.
aleksanb 16:fb8678ee25b0 359 *
aleksanb 16:fb8678ee25b0 360 * Example:
aleksanb 16:fb8678ee25b0 361 * @code
aleksanb 17:23a05bd2fe2b 362 * while (puck->drive()) {
aleksanb 16:fb8678ee25b0 363 * // Do stuff
aleksanb 16:fb8678ee25b0 364 * }
aleksanb 16:fb8678ee25b0 365 * @endcode
aleksanb 16:fb8678ee25b0 366 *
aleksanb 16:fb8678ee25b0 367 * @return true.
aleksanb 16:fb8678ee25b0 368 *
aleksanb 16:fb8678ee25b0 369 */
sigveseb 3:5432b38585ea 370 bool Puck::drive() {
aleksanb 14:9eda2d99fc1d 371 if(state == DISCONNECTED) {
aleksanb 14:9eda2d99fc1d 372 startAdvertising();
aleksanb 14:9eda2d99fc1d 373 }
aleksanb 14:9eda2d99fc1d 374
sigveseb 3:5432b38585ea 375 ble.waitForEvent();
aleksanb 14:9eda2d99fc1d 376
sigveseb 3:5432b38585ea 377 while(pendingCallbackStack.size() > 0) {
sigveseb 15:bfc682889c15 378 pendingCallbackStack.back()(pendingCallbackParameterDataStack.back(), pendingCallbackParameterLengthStack.back());
sigveseb 3:5432b38585ea 379 pendingCallbackStack.pop_back();
sigveseb 15:bfc682889c15 380 pendingCallbackParameterDataStack.pop_back();
sigveseb 15:bfc682889c15 381 pendingCallbackParameterLengthStack.pop_back();
sigveseb 3:5432b38585ea 382 }
sigveseb 3:5432b38585ea 383 return true;
sigveseb 3:5432b38585ea 384 }
sigveseb 3:5432b38585ea 385
aleksanb 16:fb8678ee25b0 386 /**
aleksanb 16:fb8678ee25b0 387 * @brief Register callback to be triggered on characteristic write.
aleksanb 16:fb8678ee25b0 388 *
aleksanb 16:fb8678ee25b0 389 * @parameter uuid
aleksanb 16:fb8678ee25b0 390 * UUID of the gatt characteristic to bind callback to.
aleksanb 16:fb8678ee25b0 391 *
aleksanb 16:fb8678ee25b0 392 * @parameter callback
sigveseb 22:7d728fed55ab 393 * CharacteristicWriteCallback to be executed on characteristic write.It's signature should be void (*CharacteristicWriteCallback)(const uint8_t* value, uint8_t length); "value" is the value that was written, and "length" is the length of the value that was written.
aleksanb 16:fb8678ee25b0 394 *
aleksanb 16:fb8678ee25b0 395 * @return Void.
aleksanb 16:fb8678ee25b0 396 *
aleksanb 16:fb8678ee25b0 397 */
sigveseb 9:ba0527c6b6d0 398 void Puck::onCharacteristicWrite(const UUID* uuid, CharacteristicWriteCallback callback) {
sigveseb 3:5432b38585ea 399 CharacteristicWriteCallbacks* cb = NULL;
sigveseb 3:5432b38585ea 400 for(int i = 0; i< writeCallbacks.size(); i++) {
sigveseb 9:ba0527c6b6d0 401 if(isEqualUUID(writeCallbacks[i]->uuid, *uuid)) {
sigveseb 3:5432b38585ea 402 cb = writeCallbacks[i];
sigveseb 3:5432b38585ea 403 break;
sigveseb 3:5432b38585ea 404 }
sigveseb 3:5432b38585ea 405 }
sigveseb 3:5432b38585ea 406 if(cb == NULL) {
sigveseb 3:5432b38585ea 407 cb = (CharacteristicWriteCallbacks*) malloc(sizeof(CharacteristicWriteCallbacks));
sigveseb 9:ba0527c6b6d0 408 if(cb == NULL) {
sigveseb 9:ba0527c6b6d0 409 LOG_ERROR("Could not malloc CharacteristicWriteCallbacks container. Possibly out of memory!\n");
sigveseb 9:ba0527c6b6d0 410 }
sigveseb 9:ba0527c6b6d0 411 cb->uuid = uuid;
sigveseb 3:5432b38585ea 412 cb->callbacks = new std::vector<CharacteristicWriteCallback>();
sigveseb 3:5432b38585ea 413 writeCallbacks.push_back(cb);
sigveseb 3:5432b38585ea 414 }
sigveseb 3:5432b38585ea 415 cb->callbacks->push_back(callback);
sigveseb 3:5432b38585ea 416 LOG_VERBOSE("Bound characteristic write callback (uuid: %x, callback: %x)\n", uuid, callback);
sigveseb 3:5432b38585ea 417 }
sigveseb 3:5432b38585ea 418
aleksanb 16:fb8678ee25b0 419 /**
aleksanb 16:fb8678ee25b0 420 * @brief Returns current value of provided gatt characteristic.
aleksanb 16:fb8678ee25b0 421 *
aleksanb 16:fb8678ee25b0 422 */
sigveseb 3:5432b38585ea 423 uint8_t* Puck::getCharacteristicValue(const UUID uuid) {
sigveseb 3:5432b38585ea 424 LOG_VERBOSE("Reading characteristic value for UUID %x\n", uuid);
sigveseb 3:5432b38585ea 425 for(int i = 0; i < characteristics.size(); i++) {
aleksanb 14:9eda2d99fc1d 426 GattAttribute &gattAttribute = characteristics[i]->getValueAttribute();
aleksanb 14:9eda2d99fc1d 427 if(isEqualUUID(&gattAttribute.getUUID(), uuid)) {
aleksanb 14:9eda2d99fc1d 428 return gattAttribute.getValuePtr();
sigveseb 3:5432b38585ea 429 }
sigveseb 3:5432b38585ea 430 }
sigveseb 3:5432b38585ea 431 LOG_WARN("Tried to read an unknown characteristic!");
sigveseb 3:5432b38585ea 432 return NULL;
sigveseb 3:5432b38585ea 433 }
sigveseb 3:5432b38585ea 434
aleksanb 16:fb8678ee25b0 435 /**
aleksanb 16:fb8678ee25b0 436 * @brief For internal use only. Exposed to hack around mbed framework limitation.
aleksanb 16:fb8678ee25b0 437 *
aleksanb 16:fb8678ee25b0 438 */
sigveseb 15:bfc682889c15 439 void Puck::onDataWritten(GattAttribute::Handle_t handle, const uint8_t* data, uint8_t length) {
sigveseb 3:5432b38585ea 440 for (int i = 0; i < characteristics.size(); i++) {
sigveseb 3:5432b38585ea 441 GattCharacteristic* characteristic = characteristics[i];
aleksanb 14:9eda2d99fc1d 442
aleksanb 14:9eda2d99fc1d 443 if (characteristic->getValueHandle() == handle) {
aleksanb 14:9eda2d99fc1d 444 GattAttribute &gattAttribute = characteristic->getValueAttribute();
aleksanb 14:9eda2d99fc1d 445
sigveseb 3:5432b38585ea 446 for(int j = 0; j < writeCallbacks.size(); j++) {
sigveseb 3:5432b38585ea 447 CharacteristicWriteCallbacks* characteristicWriteCallbacks = writeCallbacks[j];
aleksanb 14:9eda2d99fc1d 448
aleksanb 14:9eda2d99fc1d 449 if(isEqualUUID(characteristicWriteCallbacks->uuid, gattAttribute.getUUID())) {
sigveseb 3:5432b38585ea 450 for(int k = 0; k < characteristicWriteCallbacks->callbacks->size(); k++) {
sigveseb 3:5432b38585ea 451 pendingCallbackStack.push_back(characteristicWriteCallbacks->callbacks->at(k));
sigveseb 15:bfc682889c15 452
sigveseb 15:bfc682889c15 453 pendingCallbackParameterDataStack.push_back(data);
sigveseb 15:bfc682889c15 454 pendingCallbackParameterLengthStack.push_back(length);
sigveseb 3:5432b38585ea 455 }
sigveseb 9:ba0527c6b6d0 456 return;
sigveseb 3:5432b38585ea 457 }
sigveseb 3:5432b38585ea 458 }
sigveseb 3:5432b38585ea 459 }
sigveseb 3:5432b38585ea 460 }
sigveseb 3:5432b38585ea 461 }
sigveseb 3:5432b38585ea 462
sigveseb 3:5432b38585ea 463
sigveseb 3:5432b38585ea 464 #endif // __PUCK_HPP__