/ nRF51822

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Dependents:   Peripheral_1_serial_copy Peripheral_1_serial 151006_1st_Scenario_normal

Fork of nRF51822 by Nordic Semiconductor

btle/btle_discovery.cpp@280:cbaa4cb83548, 2015-06-19 (annotated)

Committer:
rgrover1
Date:
Fri Jun 19 15:55:26 2015 +0100
Revision:
280:cbaa4cb83548
Parent:
279:6e5e79f1fb61
Child:
281:2280bb1a9a9e
Synchronized with git rev 7a7b768e

Author: Rohit Grover

get onTerminationCallback invoked at the end of serviceDiscovery

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rgrover1 243:a966506d1e5b 1 /* mbed Microcontroller Library
rgrover1 243:a966506d1e5b 2 * Copyright (c) 2006-2013 ARM Limited
rgrover1 243:a966506d1e5b 3 *
rgrover1 243:a966506d1e5b 4 * Licensed under the Apache License, Version 2.0 (the "License");
rgrover1 243:a966506d1e5b 5 * you may not use this file except in compliance with the License.
rgrover1 243:a966506d1e5b 6 * You may obtain a copy of the License at
rgrover1 243:a966506d1e5b 7 *
rgrover1 243:a966506d1e5b 8 * http://www.apache.org/licenses/LICENSE-2.0
rgrover1 243:a966506d1e5b 9 *
rgrover1 243:a966506d1e5b 10 * Unless required by applicable law or agreed to in writing, software
rgrover1 243:a966506d1e5b 11 * distributed under the License is distributed on an "AS IS" BASIS,
rgrover1 243:a966506d1e5b 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rgrover1 243:a966506d1e5b 13 * See the License for the specific language governing permissions and
rgrover1 243:a966506d1e5b 14 * limitations under the License.
rgrover1 243:a966506d1e5b 15 */
rgrover1 243:a966506d1e5b 16
rgrover1 239:693a1f145b5a 17 #include "blecommon.h"
rgrover1 239:693a1f145b5a 18 #include "UUID.h"
rgrover1 239:693a1f145b5a 19 #include "Gap.h"
rgrover1 239:693a1f145b5a 20 #include "nrf_error.h"
rgrover1 239:693a1f145b5a 21 #include "btle_discovery.h"
rgrover1 239:693a1f145b5a 22 #include "ble_err.h"
rgrover1 243:a966506d1e5b 23
rgrover1 278:26e3f0ef1e14 24 static NordicServiceDiscovery sdSingleton;
rgrover1 239:693a1f145b5a 25
rgrover1 239:693a1f145b5a 26 ble_error_t
rgrover1 275:fd709cd8b1b2 27 ServiceDiscovery::launch(Gap::Handle_t connectionHandle,
rgrover1 275:fd709cd8b1b2 28 ServiceCallback_t sc,
rgrover1 275:fd709cd8b1b2 29 CharacteristicCallback_t cc,
rgrover1 275:fd709cd8b1b2 30 const UUID &matchingServiceUUIDIn,
rgrover1 275:fd709cd8b1b2 31 const UUID &matchingCharacteristicUUIDIn)
rgrover1 239:693a1f145b5a 32 {
rgrover1 278:26e3f0ef1e14 33 sdSingleton.serviceCallback = sc;
rgrover1 278:26e3f0ef1e14 34 sdSingleton.characteristicCallback = cc;
rgrover1 278:26e3f0ef1e14 35 sdSingleton.matchingServiceUUID = matchingServiceUUIDIn;
rgrover1 278:26e3f0ef1e14 36 sdSingleton.matchingCharacteristicUUID = matchingCharacteristicUUIDIn;
rgrover1 273:8ada9e8111a3 37
rgrover1 278:26e3f0ef1e14 38 sdSingleton.serviceDiscoveryStarted(connectionHandle);
rgrover1 239:693a1f145b5a 39
rgrover1 239:693a1f145b5a 40 uint32_t rc;
rgrover1 248:71ef03789dd3 41 if ((rc = sd_ble_gattc_primary_services_discover(connectionHandle, NordicServiceDiscovery::SRV_DISC_START_HANDLE, NULL)) != NRF_SUCCESS) {
rgrover1 278:26e3f0ef1e14 42 sdSingleton.terminate();
rgrover1 239:693a1f145b5a 43 switch (rc) {
rgrover1 239:693a1f145b5a 44 case NRF_ERROR_INVALID_PARAM:
rgrover1 239:693a1f145b5a 45 case BLE_ERROR_INVALID_CONN_HANDLE:
rgrover1 239:693a1f145b5a 46 return BLE_ERROR_INVALID_PARAM;
rgrover1 239:693a1f145b5a 47 case NRF_ERROR_BUSY:
rgrover1 239:693a1f145b5a 48 return BLE_STACK_BUSY;
rgrover1 239:693a1f145b5a 49 default:
rgrover1 239:693a1f145b5a 50 case NRF_ERROR_INVALID_STATE:
rgrover1 239:693a1f145b5a 51 return BLE_ERROR_INVALID_STATE;
rgrover1 239:693a1f145b5a 52 }
rgrover1 239:693a1f145b5a 53 }
rgrover1 239:693a1f145b5a 54
rgrover1 239:693a1f145b5a 55 return BLE_ERROR_NONE;
rgrover1 239:693a1f145b5a 56 }
rgrover1 239:693a1f145b5a 57
rgrover1 248:71ef03789dd3 58 void
rgrover1 248:71ef03789dd3 59 ServiceDiscovery::terminate(void)
rgrover1 248:71ef03789dd3 60 {
rgrover1 278:26e3f0ef1e14 61 sdSingleton.terminateServiceDiscovery();
rgrover1 248:71ef03789dd3 62 }
rgrover1 248:71ef03789dd3 63
rgrover1 279:6e5e79f1fb61 64 bool
rgrover1 279:6e5e79f1fb61 65 ServiceDiscovery::isActive(void)
rgrover1 279:6e5e79f1fb61 66 {
rgrover1 279:6e5e79f1fb61 67 return sdSingleton.isActive();
rgrover1 279:6e5e79f1fb61 68 }
rgrover1 279:6e5e79f1fb61 69
rgrover1 280:cbaa4cb83548 70 void ServiceDiscovery::onTermination(TerminationCallback_t callback) {
rgrover1 280:cbaa4cb83548 71 sdSingleton.setOnTermination(callback);
rgrover1 280:cbaa4cb83548 72 }
rgrover1 280:cbaa4cb83548 73
rgrover1 243:a966506d1e5b 74 ble_error_t
rgrover1 252:4b3f294415f5 75 NordicServiceDiscovery::launchCharacteristicDiscovery(Gap::Handle_t connectionHandle,
rgrover1 252:4b3f294415f5 76 Gap::Handle_t startHandle,
rgrover1 252:4b3f294415f5 77 Gap::Handle_t endHandle)
rgrover1 252:4b3f294415f5 78 {
rgrover1 278:26e3f0ef1e14 79 sdSingleton.characteristicDiscoveryStarted(connectionHandle);
rgrover1 239:693a1f145b5a 80
rgrover1 239:693a1f145b5a 81 ble_gattc_handle_range_t handleRange = {
rgrover1 239:693a1f145b5a 82 .start_handle = startHandle,
rgrover1 239:693a1f145b5a 83 .end_handle = endHandle
rgrover1 239:693a1f145b5a 84 };
rgrover1 239:693a1f145b5a 85 uint32_t rc;
rgrover1 239:693a1f145b5a 86 if ((rc = sd_ble_gattc_characteristics_discover(connectionHandle, &handleRange)) != NRF_SUCCESS) {
rgrover1 278:26e3f0ef1e14 87 sdSingleton.terminateCharacteristicDiscovery();
rgrover1 239:693a1f145b5a 88 switch (rc) {
rgrover1 239:693a1f145b5a 89 case BLE_ERROR_INVALID_CONN_HANDLE:
rgrover1 239:693a1f145b5a 90 case NRF_ERROR_INVALID_ADDR:
rgrover1 239:693a1f145b5a 91 return BLE_ERROR_INVALID_PARAM;
rgrover1 239:693a1f145b5a 92 case NRF_ERROR_BUSY:
rgrover1 239:693a1f145b5a 93 return BLE_STACK_BUSY;
rgrover1 239:693a1f145b5a 94 default:
rgrover1 239:693a1f145b5a 95 case NRF_ERROR_INVALID_STATE:
rgrover1 239:693a1f145b5a 96 return BLE_ERROR_INVALID_STATE;
rgrover1 239:693a1f145b5a 97 }
rgrover1 239:693a1f145b5a 98 }
rgrover1 239:693a1f145b5a 99
rgrover1 239:693a1f145b5a 100 return BLE_ERROR_NONE;
rgrover1 239:693a1f145b5a 101 }
rgrover1 239:693a1f145b5a 102
rgrover1 239:693a1f145b5a 103 void
rgrover1 240:75b69581d1dd 104 NordicServiceDiscovery::setupDiscoveredServices(const ble_gattc_evt_prim_srvc_disc_rsp_t *response)
rgrover1 239:693a1f145b5a 105 {
rgrover1 242:73fc02cc20b1 106 serviceIndex = 0;
rgrover1 242:73fc02cc20b1 107 numServices = response->count;
rgrover1 239:693a1f145b5a 108
rgrover1 239:693a1f145b5a 109 /* Account for the limitation on the number of discovered services we can handle at a time. */
rgrover1 242:73fc02cc20b1 110 if (numServices > BLE_DB_DISCOVERY_MAX_SRV) {
rgrover1 242:73fc02cc20b1 111 numServices = BLE_DB_DISCOVERY_MAX_SRV;
rgrover1 239:693a1f145b5a 112 }
rgrover1 239:693a1f145b5a 113
rgrover1 242:73fc02cc20b1 114 for (unsigned serviceIndex = 0; serviceIndex < numServices; serviceIndex++) {
rgrover1 239:693a1f145b5a 115 services[serviceIndex].setup(response->services[serviceIndex].uuid.uuid,
rgrover1 239:693a1f145b5a 116 response->services[serviceIndex].handle_range.start_handle,
rgrover1 239:693a1f145b5a 117 response->services[serviceIndex].handle_range.end_handle);
rgrover1 239:693a1f145b5a 118 }
rgrover1 239:693a1f145b5a 119 }
rgrover1 239:693a1f145b5a 120
rgrover1 239:693a1f145b5a 121 void
rgrover1 240:75b69581d1dd 122 NordicServiceDiscovery::setupDiscoveredCharacteristics(const ble_gattc_evt_char_disc_rsp_t *response)
rgrover1 239:693a1f145b5a 123 {
rgrover1 242:73fc02cc20b1 124 characteristicIndex = 0;
rgrover1 242:73fc02cc20b1 125 numCharacteristics = response->count;
rgrover1 239:693a1f145b5a 126
rgrover1 239:693a1f145b5a 127 /* Account for the limitation on the number of discovered characteristics we can handle at a time. */
rgrover1 242:73fc02cc20b1 128 if (numCharacteristics > BLE_DB_DISCOVERY_MAX_CHAR_PER_SRV) {
rgrover1 242:73fc02cc20b1 129 numCharacteristics = BLE_DB_DISCOVERY_MAX_CHAR_PER_SRV;
rgrover1 239:693a1f145b5a 130 }
rgrover1 239:693a1f145b5a 131
rgrover1 242:73fc02cc20b1 132 for (unsigned charIndex = 0; charIndex < numCharacteristics; charIndex++) {
rgrover1 239:693a1f145b5a 133 characteristics[charIndex].setup(response->chars[charIndex].uuid.uuid,
rgrover1 239:693a1f145b5a 134 *(const uint8_t *)(&response->chars[charIndex].char_props),
rgrover1 239:693a1f145b5a 135 response->chars[charIndex].handle_decl,
rgrover1 239:693a1f145b5a 136 response->chars[charIndex].handle_value);
rgrover1 239:693a1f145b5a 137 }
rgrover1 243:a966506d1e5b 138 }
rgrover1 243:a966506d1e5b 139
rgrover1 251:d4e0cf5e8751 140 void
rgrover1 251:d4e0cf5e8751 141 NordicServiceDiscovery::progressCharacteristicDiscovery(void)
rgrover1 251:d4e0cf5e8751 142 {
rgrover1 276:ae6e5129b395 143 /* Iterate through the previously discovered characteristics cached in characteristics[]. */
rgrover1 251:d4e0cf5e8751 144 while (cDiscoveryActive && (characteristicIndex < numCharacteristics)) {
rgrover1 255:d228656b0cd1 145 if (characteristicCallback) {
rgrover1 255:d228656b0cd1 146 characteristicCallback(characteristics[characteristicIndex]);
rgrover1 255:d228656b0cd1 147 }
rgrover1 251:d4e0cf5e8751 148
rgrover1 251:d4e0cf5e8751 149 characteristicIndex++;
rgrover1 251:d4e0cf5e8751 150 }
rgrover1 251:d4e0cf5e8751 151
rgrover1 276:ae6e5129b395 152 /* Relaunch discovery of new characteristics beyond the last entry cached in characteristics[]. */
rgrover1 251:d4e0cf5e8751 153 if (cDiscoveryActive) {
rgrover1 276:ae6e5129b395 154 /* Determine the ending handle of the last cached characteristic. */
rgrover1 264:5533ac0adf4b 155 Gap::Handle_t startHandle = characteristics[characteristicIndex - 1].getValueHandle() + 1;
rgrover1 264:5533ac0adf4b 156 Gap::Handle_t endHandle = services[serviceIndex].getEndHandle();
rgrover1 274:f82e0ecba699 157 resetDiscoveredCharacteristics(); /* Note: resetDiscoveredCharacteristics() must come after fetching start and end Handles. */
rgrover1 251:d4e0cf5e8751 158
rgrover1 251:d4e0cf5e8751 159 if (startHandle < endHandle) {
rgrover1 251:d4e0cf5e8751 160 ble_gattc_handle_range_t handleRange = {
rgrover1 251:d4e0cf5e8751 161 .start_handle = startHandle,
rgrover1 251:d4e0cf5e8751 162 .end_handle = endHandle
rgrover1 251:d4e0cf5e8751 163 };
rgrover1 258:62d6bf03e6a4 164 if (sd_ble_gattc_characteristics_discover(connHandle, &handleRange) != NRF_SUCCESS) {
rgrover1 258:62d6bf03e6a4 165 terminateCharacteristicDiscovery();
rgrover1 258:62d6bf03e6a4 166 }
rgrover1 251:d4e0cf5e8751 167 } else {
rgrover1 277:91705df8495e 168 terminateCharacteristicDiscovery();
rgrover1 251:d4e0cf5e8751 169 }
rgrover1 251:d4e0cf5e8751 170 }
rgrover1 251:d4e0cf5e8751 171 }
rgrover1 251:d4e0cf5e8751 172
rgrover1 251:d4e0cf5e8751 173 void
rgrover1 251:d4e0cf5e8751 174 NordicServiceDiscovery::progressServiceDiscovery(void)
rgrover1 251:d4e0cf5e8751 175 {
rgrover1 276:ae6e5129b395 176 /* Iterate through the previously discovered services cached in services[]. */
rgrover1 251:d4e0cf5e8751 177 while (sDiscoveryActive && (serviceIndex < numServices)) {
rgrover1 277:91705df8495e 178 if ((matchingServiceUUID == ShortUUIDBytes_t(BLE_UUID_UNKNOWN)) ||
rgrover1 277:91705df8495e 179 (matchingServiceUUID == services[serviceIndex].getShortUUID())) {
rgrover1 277:91705df8495e 180 if (serviceCallback) {
rgrover1 277:91705df8495e 181 serviceCallback(services[serviceIndex]);
rgrover1 277:91705df8495e 182 }
rgrover1 251:d4e0cf5e8751 183
rgrover1 277:91705df8495e 184 if (sDiscoveryActive && characteristicCallback) {
rgrover1 277:91705df8495e 185 launchCharacteristicDiscovery(connHandle, services[serviceIndex].getStartHandle(), services[serviceIndex].getEndHandle());
rgrover1 277:91705df8495e 186 } else {
rgrover1 277:91705df8495e 187 serviceIndex++;
rgrover1 277:91705df8495e 188 }
rgrover1 251:d4e0cf5e8751 189 } else {
rgrover1 277:91705df8495e 190 serviceIndex++;
rgrover1 251:d4e0cf5e8751 191 }
rgrover1 251:d4e0cf5e8751 192 }
rgrover1 276:ae6e5129b395 193
rgrover1 276:ae6e5129b395 194 /* Relaunch discovery of new services beyond the last entry cached in services[]. */
rgrover1 251:d4e0cf5e8751 195 if (sDiscoveryActive && (numServices > 0) && (serviceIndex > 0)) {
rgrover1 276:ae6e5129b395 196 /* Determine the ending handle of the last cached service. */
rgrover1 264:5533ac0adf4b 197 Gap::Handle_t endHandle = services[serviceIndex - 1].getEndHandle();
rgrover1 274:f82e0ecba699 198 resetDiscoveredServices(); /* Note: resetDiscoveredServices() must come after fetching endHandle. */
rgrover1 251:d4e0cf5e8751 199
rgrover1 258:62d6bf03e6a4 200 if (sd_ble_gattc_primary_services_discover(connHandle, endHandle, NULL) != NRF_SUCCESS) {
rgrover1 258:62d6bf03e6a4 201 terminateServiceDiscovery();
rgrover1 258:62d6bf03e6a4 202 }
rgrover1 251:d4e0cf5e8751 203 }
rgrover1 251:d4e0cf5e8751 204 }
rgrover1 251:d4e0cf5e8751 205
rgrover1 243:a966506d1e5b 206 void bleGattcEventHandler(const ble_evt_t *p_ble_evt)
rgrover1 243:a966506d1e5b 207 {
rgrover1 243:a966506d1e5b 208 switch (p_ble_evt->header.evt_id) {
rgrover1 243:a966506d1e5b 209 case BLE_GATTC_EVT_PRIM_SRVC_DISC_RSP:
rgrover1 243:a966506d1e5b 210 switch (p_ble_evt->evt.gattc_evt.gatt_status) {
rgrover1 243:a966506d1e5b 211 case BLE_GATT_STATUS_SUCCESS:
rgrover1 278:26e3f0ef1e14 212 sdSingleton.setupDiscoveredServices(&p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp);
rgrover1 243:a966506d1e5b 213 break;
rgrover1 243:a966506d1e5b 214
rgrover1 243:a966506d1e5b 215 case BLE_GATT_STATUS_ATTERR_ATTRIBUTE_NOT_FOUND:
rgrover1 243:a966506d1e5b 216 default:
rgrover1 278:26e3f0ef1e14 217 sdSingleton.terminate();
rgrover1 243:a966506d1e5b 218 break;
rgrover1 243:a966506d1e5b 219 }
rgrover1 243:a966506d1e5b 220 break;
rgrover1 243:a966506d1e5b 221
rgrover1 243:a966506d1e5b 222 case BLE_GATTC_EVT_CHAR_DISC_RSP:
rgrover1 243:a966506d1e5b 223 switch (p_ble_evt->evt.gattc_evt.gatt_status) {
rgrover1 243:a966506d1e5b 224 case BLE_GATT_STATUS_SUCCESS:
rgrover1 278:26e3f0ef1e14 225 sdSingleton.setupDiscoveredCharacteristics(&p_ble_evt->evt.gattc_evt.params.char_disc_rsp);
rgrover1 243:a966506d1e5b 226 break;
rgrover1 243:a966506d1e5b 227
rgrover1 243:a966506d1e5b 228 case BLE_GATT_STATUS_ATTERR_ATTRIBUTE_NOT_FOUND:
rgrover1 243:a966506d1e5b 229 default:
rgrover1 278:26e3f0ef1e14 230 sdSingleton.terminateCharacteristicDiscovery();
rgrover1 243:a966506d1e5b 231 break;
rgrover1 243:a966506d1e5b 232 }
rgrover1 243:a966506d1e5b 233 break;
rgrover1 243:a966506d1e5b 234 }
rgrover1 243:a966506d1e5b 235
rgrover1 278:26e3f0ef1e14 236 sdSingleton.progressCharacteristicDiscovery();
rgrover1 278:26e3f0ef1e14 237 sdSingleton.progressServiceDiscovery();
rgrover1 239:693a1f145b5a 238 }