Michael Galis / nRF51822

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Fork of nRF51822 by Nordic Semiconductor

btle/btle_discovery.h@244:57c98fe71376, 2015-06-19 (annotated)

Committer:
rgrover1
Date:
Fri Jun 19 15:55:22 2015 +0100
Revision:
244:57c98fe71376
Parent:
243:a966506d1e5b
Child:
245:3abc61d38db3
Synchronized with git rev 2f40cc9e

Author: Rohit Grover

move helper functions related to characteristicDiscovery into NordicSD.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rgrover1 239:693a1f145b5a 1 /* mbed Microcontroller Library
rgrover1 239:693a1f145b5a 2 * Copyright (c) 2006-2013 ARM Limited
rgrover1 239:693a1f145b5a 3 *
rgrover1 239:693a1f145b5a 4 * Licensed under the Apache License, Version 2.0 (the "License");
rgrover1 239:693a1f145b5a 5 * you may not use this file except in compliance with the License.
rgrover1 239:693a1f145b5a 6 * You may obtain a copy of the License at
rgrover1 239:693a1f145b5a 7 *
rgrover1 239:693a1f145b5a 8 * http://www.apache.org/licenses/LICENSE-2.0
rgrover1 239:693a1f145b5a 9 *
rgrover1 239:693a1f145b5a 10 * Unless required by applicable law or agreed to in writing, software
rgrover1 239:693a1f145b5a 11 * distributed under the License is distributed on an "AS IS" BASIS,
rgrover1 239:693a1f145b5a 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rgrover1 239:693a1f145b5a 13 * See the License for the specific language governing permissions and
rgrover1 239:693a1f145b5a 14 * limitations under the License.
rgrover1 239:693a1f145b5a 15 */
rgrover1 239:693a1f145b5a 16
rgrover1 239:693a1f145b5a 17 #ifndef _BTLE_DISCOVERY_H_
rgrover1 239:693a1f145b5a 18 #define _BTLE_DISCOVERY_H_
rgrover1 239:693a1f145b5a 19
rgrover1 239:693a1f145b5a 20 #include "blecommon.h"
rgrover1 239:693a1f145b5a 21 #include "UUID.h"
rgrover1 239:693a1f145b5a 22 #include "Gap.h"
rgrover1 239:693a1f145b5a 23 #include "ble_gattc.h"
rgrover1 239:693a1f145b5a 24 #include <stdio.h>
rgrover1 239:693a1f145b5a 25
rgrover1 239:693a1f145b5a 26 /**@brief Structure for holding information about the service and the characteristics found during
rgrover1 239:693a1f145b5a 27 * the discovery process.
rgrover1 239:693a1f145b5a 28 */
rgrover1 239:693a1f145b5a 29 struct DiscoveredService {
rgrover1 239:693a1f145b5a 30 void setup(ShortUUIDBytes_t uuidIn, Gap::Handle_t start, Gap::Handle_t end) {
rgrover1 239:693a1f145b5a 31 uuid = uuidIn;
rgrover1 239:693a1f145b5a 32 startHandle = start;
rgrover1 239:693a1f145b5a 33 endHandle = end;
rgrover1 239:693a1f145b5a 34 }
rgrover1 239:693a1f145b5a 35
rgrover1 239:693a1f145b5a 36 ShortUUIDBytes_t uuid; /**< UUID of the service. */
rgrover1 239:693a1f145b5a 37 Gap::Handle_t startHandle; /**< Service Handle Range. */
rgrover1 239:693a1f145b5a 38 Gap::Handle_t endHandle; /**< Service Handle Range. */
rgrover1 239:693a1f145b5a 39 };
rgrover1 239:693a1f145b5a 40
rgrover1 239:693a1f145b5a 41 /**@brief Structure for holding information about the service and the characteristics found during
rgrover1 239:693a1f145b5a 42 * the discovery process.
rgrover1 239:693a1f145b5a 43 */
rgrover1 239:693a1f145b5a 44 struct DiscoveredCharacteristic {
rgrover1 239:693a1f145b5a 45 struct Properties_t {
rgrover1 239:693a1f145b5a 46 static const uint8_t BROADCAST_PROPERTY_MASK = 0x01;
rgrover1 239:693a1f145b5a 47 static const uint8_t READ_PROPERTY_MASK = 0x02;
rgrover1 239:693a1f145b5a 48 static const uint8_t WRITE_WO_RESPONSE_PROPERTY_MASK = 0x04;
rgrover1 239:693a1f145b5a 49 static const uint8_t WRITE_PROPERTY_MASK = 0x08;
rgrover1 239:693a1f145b5a 50 static const uint8_t NOTIFY_PROPERTY_MASK = 0x10;
rgrover1 239:693a1f145b5a 51 static const uint8_t INDICATE_PROPERTY_MASK = 0x20;
rgrover1 239:693a1f145b5a 52 static const uint8_t AUTH_SIGNED_PROPERTY_MASK = 0x40;
rgrover1 239:693a1f145b5a 53
rgrover1 239:693a1f145b5a 54 Properties_t() : broadcast(0), read(0), write_wo_resp(0), write(0), notify(0), indicate(0), auth_signed_wr(0) {
rgrover1 239:693a1f145b5a 55 /* empty */
rgrover1 239:693a1f145b5a 56 }
rgrover1 239:693a1f145b5a 57
rgrover1 239:693a1f145b5a 58 Properties_t(uint8_t props) :
rgrover1 239:693a1f145b5a 59 broadcast(props & BROADCAST_PROPERTY_MASK),
rgrover1 239:693a1f145b5a 60 read(props & READ_PROPERTY_MASK),
rgrover1 239:693a1f145b5a 61 write_wo_resp(props & WRITE_WO_RESPONSE_PROPERTY_MASK),
rgrover1 239:693a1f145b5a 62 write(props & WRITE_PROPERTY_MASK),
rgrover1 239:693a1f145b5a 63 notify(props & NOTIFY_PROPERTY_MASK),
rgrover1 239:693a1f145b5a 64 indicate(props & INDICATE_PROPERTY_MASK),
rgrover1 239:693a1f145b5a 65 auth_signed_wr(props & AUTH_SIGNED_PROPERTY_MASK) {
rgrover1 239:693a1f145b5a 66 /* empty*/
rgrover1 239:693a1f145b5a 67 }
rgrover1 239:693a1f145b5a 68
rgrover1 239:693a1f145b5a 69 uint8_t broadcast :1; /**< Broadcasting of the value permitted. */
rgrover1 239:693a1f145b5a 70 uint8_t read :1; /**< Reading the value permitted. */
rgrover1 239:693a1f145b5a 71 uint8_t write_wo_resp :1; /**< Writing the value with Write Command permitted. */
rgrover1 239:693a1f145b5a 72 uint8_t write :1; /**< Writing the value with Write Request permitted. */
rgrover1 239:693a1f145b5a 73 uint8_t notify :1; /**< Notications of the value permitted. */
rgrover1 239:693a1f145b5a 74 uint8_t indicate :1; /**< Indications of the value permitted. */
rgrover1 239:693a1f145b5a 75 uint8_t auth_signed_wr :1; /**< Writing the value with Signed Write Command permitted. */
rgrover1 239:693a1f145b5a 76 };
rgrover1 239:693a1f145b5a 77
rgrover1 239:693a1f145b5a 78 void setup(ShortUUIDBytes_t uuidIn, Properties_t propsIn, Gap::Handle_t declHandleIn, Gap::Handle_t valueHandleIn) {
rgrover1 239:693a1f145b5a 79 uuid = uuidIn;
rgrover1 239:693a1f145b5a 80 props = propsIn;
rgrover1 239:693a1f145b5a 81 declHandle = declHandleIn;
rgrover1 239:693a1f145b5a 82 valueHandle = valueHandleIn;
rgrover1 239:693a1f145b5a 83 }
rgrover1 239:693a1f145b5a 84
rgrover1 239:693a1f145b5a 85 ShortUUIDBytes_t uuid;
rgrover1 239:693a1f145b5a 86 Properties_t props;
rgrover1 239:693a1f145b5a 87 Gap::Handle_t declHandle;
rgrover1 239:693a1f145b5a 88 Gap::Handle_t valueHandle;
rgrover1 239:693a1f145b5a 89 };
rgrover1 239:693a1f145b5a 90
rgrover1 239:693a1f145b5a 91 class ServiceDiscovery {
rgrover1 239:693a1f145b5a 92 public:
rgrover1 239:693a1f145b5a 93 static const unsigned BLE_DB_DISCOVERY_MAX_SRV = 4; /**< Maximum number of services supported by this module. This also indicates the maximum number of users allowed to be registered to this module. (one user per service). */
rgrover1 239:693a1f145b5a 94 static const unsigned BLE_DB_DISCOVERY_MAX_CHAR_PER_SRV = 4; /**< Maximum number of characteristics per service supported by this module. */
rgrover1 239:693a1f145b5a 95
rgrover1 239:693a1f145b5a 96 static const uint16_t SRV_DISC_START_HANDLE = 0x0001; /**< The start handle value used during service discovery. */
rgrover1 239:693a1f145b5a 97
rgrover1 239:693a1f145b5a 98 typedef void (*ServiceCallback_t)(void);
rgrover1 239:693a1f145b5a 99 typedef void (*CharacteristicCallback_t)(void);
rgrover1 239:693a1f145b5a 100
rgrover1 239:693a1f145b5a 101 public:
rgrover1 239:693a1f145b5a 102 static ble_error_t launch(Gap::Handle_t connectionHandle,
rgrover1 239:693a1f145b5a 103 ServiceCallback_t sc,
rgrover1 239:693a1f145b5a 104 CharacteristicCallback_t cc = NULL);
rgrover1 239:693a1f145b5a 105 static ble_error_t launch(Gap::Handle_t connectionHandle,
rgrover1 239:693a1f145b5a 106 UUID matchingServiceUUID,
rgrover1 239:693a1f145b5a 107 ServiceCallback_t sc,
rgrover1 239:693a1f145b5a 108 UUID matchingCharacteristicUUID = ShortUUIDBytes_t(BLE_UUID_UNKNOWN),
rgrover1 239:693a1f145b5a 109 CharacteristicCallback_t cc = NULL);
rgrover1 239:693a1f145b5a 110
rgrover1 239:693a1f145b5a 111 static ServiceDiscovery *getSingleton(void);
rgrover1 239:693a1f145b5a 112
rgrover1 239:693a1f145b5a 113 public:
rgrover1 239:693a1f145b5a 114 void terminate(void) {
rgrover1 242:73fc02cc20b1 115 sDiscoveryActive = false;
rgrover1 239:693a1f145b5a 116 printf("end of service discovery\r\n");
rgrover1 239:693a1f145b5a 117 }
rgrover1 239:693a1f145b5a 118
rgrover1 239:693a1f145b5a 119 void resetDiscoveredServices(void) {
rgrover1 242:73fc02cc20b1 120 numServices = 0;
rgrover1 242:73fc02cc20b1 121 serviceIndex = 0;
rgrover1 239:693a1f145b5a 122 memset(services, 0, sizeof(DiscoveredService) * BLE_DB_DISCOVERY_MAX_SRV);
rgrover1 239:693a1f145b5a 123 }
rgrover1 239:693a1f145b5a 124
rgrover1 243:a966506d1e5b 125 void serviceDiscoveryStarted(Gap::Handle_t connectionHandle) {
rgrover1 243:a966506d1e5b 126 connHandle = connectionHandle;
rgrover1 243:a966506d1e5b 127 resetDiscoveredServices();
rgrover1 243:a966506d1e5b 128 sDiscoveryActive = true;
rgrover1 243:a966506d1e5b 129 cDiscoveryActive = false;
rgrover1 243:a966506d1e5b 130 }
rgrover1 243:a966506d1e5b 131
rgrover1 243:a966506d1e5b 132 protected:
rgrover1 243:a966506d1e5b 133 ServiceDiscovery() {
rgrover1 243:a966506d1e5b 134 /* empty */
rgrover1 243:a966506d1e5b 135 }
rgrover1 243:a966506d1e5b 136
rgrover1 243:a966506d1e5b 137 protected:
rgrover1 243:a966506d1e5b 138 DiscoveredService services[BLE_DB_DISCOVERY_MAX_SRV]; /**< Information related to the current service being discovered.
rgrover1 243:a966506d1e5b 139 * This is intended for internal use during service discovery. */
rgrover1 243:a966506d1e5b 140 DiscoveredCharacteristic characteristics[BLE_DB_DISCOVERY_MAX_CHAR_PER_SRV];
rgrover1 243:a966506d1e5b 141
rgrover1 243:a966506d1e5b 142 uint16_t connHandle; /**< Connection handle as provided by the SoftDevice. */
rgrover1 243:a966506d1e5b 143 uint8_t serviceIndex; /**< Index of the current service being discovered. This is intended for internal use during service discovery.*/
rgrover1 243:a966506d1e5b 144 uint8_t numServices; /**< Number of services at the peers GATT database.*/
rgrover1 243:a966506d1e5b 145 uint8_t characteristicIndex; /**< Index of the current characteristic being discovered. This is intended for internal use during service discovery.*/
rgrover1 243:a966506d1e5b 146 uint8_t numCharacteristics; /**< Number of characteristics within the service.*/
rgrover1 243:a966506d1e5b 147
rgrover1 243:a966506d1e5b 148 bool sDiscoveryActive;
rgrover1 243:a966506d1e5b 149 bool cDiscoveryActive;
rgrover1 243:a966506d1e5b 150 };
rgrover1 243:a966506d1e5b 151
rgrover1 243:a966506d1e5b 152 class NordicServiceDiscovery : public ServiceDiscovery {
rgrover1 243:a966506d1e5b 153 public:
rgrover1 243:a966506d1e5b 154 void setupDiscoveredServices(const ble_gattc_evt_prim_srvc_disc_rsp_t *response);
rgrover1 243:a966506d1e5b 155 void setupDiscoveredCharacteristics(const ble_gattc_evt_char_disc_rsp_t *response);
rgrover1 243:a966506d1e5b 156
rgrover1 244:57c98fe71376 157 public:
rgrover1 244:57c98fe71376 158 ble_error_t launchCharacteristicDiscovery(Gap::Handle_t connectionHandle, Gap::Handle_t startHandle, Gap::Handle_t endHandle);
rgrover1 244:57c98fe71376 159
rgrover1 244:57c98fe71376 160 void terminateCharacteristicDiscovery(void) {
rgrover1 244:57c98fe71376 161 cDiscoveryActive = false;
rgrover1 244:57c98fe71376 162 sDiscoveryActive = true;
rgrover1 244:57c98fe71376 163 serviceIndex++; /* Progress service index to keep discovery alive. */
rgrover1 244:57c98fe71376 164 }
rgrover1 244:57c98fe71376 165
rgrover1 243:a966506d1e5b 166 private:
rgrover1 244:57c98fe71376 167 void characteristicDiscoveryStarted(Gap::Handle_t connectionHandle) {
rgrover1 244:57c98fe71376 168 connHandle = connectionHandle;
rgrover1 244:57c98fe71376 169 resetDiscoveredCharacteristics();
rgrover1 244:57c98fe71376 170 cDiscoveryActive = true;
rgrover1 244:57c98fe71376 171 sDiscoveryActive = false;
rgrover1 244:57c98fe71376 172 }
rgrover1 244:57c98fe71376 173
rgrover1 244:57c98fe71376 174 void resetDiscoveredCharacteristics(void) {
rgrover1 244:57c98fe71376 175 numCharacteristics = 0;
rgrover1 244:57c98fe71376 176 characteristicIndex = 0;
rgrover1 244:57c98fe71376 177 memset(characteristics, 0, sizeof(DiscoveredCharacteristic) * BLE_DB_DISCOVERY_MAX_CHAR_PER_SRV);
rgrover1 244:57c98fe71376 178 }
rgrover1 243:a966506d1e5b 179
rgrover1 243:a966506d1e5b 180 public:
rgrover1 239:693a1f145b5a 181 void progressCharacteristicDiscovery() {
rgrover1 242:73fc02cc20b1 182 while (cDiscoveryActive && (characteristicIndex < numCharacteristics)) {
rgrover1 239:693a1f145b5a 183 /* THIS IS WHERE THE CALLBACK WILL GO */
rgrover1 242:73fc02cc20b1 184 printf("%x [%u]\r\n", characteristics[characteristicIndex].uuid, characteristics[characteristicIndex].valueHandle);
rgrover1 239:693a1f145b5a 185
rgrover1 242:73fc02cc20b1 186 characteristicIndex++;
rgrover1 239:693a1f145b5a 187 }
rgrover1 239:693a1f145b5a 188
rgrover1 242:73fc02cc20b1 189 if (cDiscoveryActive) {
rgrover1 242:73fc02cc20b1 190 Gap::Handle_t startHandle = characteristics[characteristicIndex - 1].valueHandle + 1;
rgrover1 242:73fc02cc20b1 191 Gap::Handle_t endHandle = services[serviceIndex].endHandle;
rgrover1 239:693a1f145b5a 192 resetDiscoveredCharacteristics();
rgrover1 239:693a1f145b5a 193
rgrover1 239:693a1f145b5a 194 if (startHandle < endHandle) {
rgrover1 239:693a1f145b5a 195 ble_gattc_handle_range_t handleRange = {
rgrover1 239:693a1f145b5a 196 .start_handle = startHandle,
rgrover1 239:693a1f145b5a 197 .end_handle = endHandle
rgrover1 239:693a1f145b5a 198 };
rgrover1 239:693a1f145b5a 199 printf("char discovery returned %u\r\n", sd_ble_gattc_characteristics_discover(connHandle, &handleRange));
rgrover1 239:693a1f145b5a 200 } else {
rgrover1 239:693a1f145b5a 201 terminateCharacteristicDiscovery();
rgrover1 239:693a1f145b5a 202 }
rgrover1 239:693a1f145b5a 203 }
rgrover1 239:693a1f145b5a 204 }
rgrover1 239:693a1f145b5a 205
rgrover1 239:693a1f145b5a 206 void progressServiceDiscovery() {
rgrover1 242:73fc02cc20b1 207 while (sDiscoveryActive && (serviceIndex < numServices)) {
rgrover1 239:693a1f145b5a 208 /* THIS IS WHERE THE CALLBACK WILL GO */
rgrover1 242:73fc02cc20b1 209 printf("%x [%u %u]\r\n", services[serviceIndex].uuid, services[serviceIndex].startHandle, services[serviceIndex].endHandle);
rgrover1 239:693a1f145b5a 210
rgrover1 239:693a1f145b5a 211 if (true) { /* characteristic discovery is optional. */
rgrover1 242:73fc02cc20b1 212 launchCharacteristicDiscovery(connHandle, services[serviceIndex].startHandle, services[serviceIndex].endHandle);
rgrover1 239:693a1f145b5a 213 } else {
rgrover1 242:73fc02cc20b1 214 serviceIndex++; /* Progress service index to keep discovery alive. */
rgrover1 239:693a1f145b5a 215 }
rgrover1 239:693a1f145b5a 216 }
rgrover1 242:73fc02cc20b1 217 if (sDiscoveryActive && (numServices > 0) && (serviceIndex > 0)) {
rgrover1 242:73fc02cc20b1 218 Gap::Handle_t endHandle = services[serviceIndex - 1].endHandle;
rgrover1 239:693a1f145b5a 219 resetDiscoveredServices();
rgrover1 239:693a1f145b5a 220
rgrover1 239:693a1f145b5a 221 printf("services discover returned %u\r\n", sd_ble_gattc_primary_services_discover(connHandle, endHandle, NULL));
rgrover1 239:693a1f145b5a 222 }
rgrover1 239:693a1f145b5a 223 }
rgrover1 239:693a1f145b5a 224
rgrover1 240:75b69581d1dd 225 };
rgrover1 240:75b69581d1dd 226
rgrover1 239:693a1f145b5a 227 #endif /*_BTLE_DISCOVERY_H_*/