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btle/btle_gattc.cpp@210:e7749aec4203, 2015-06-19 (annotated)

Committer:
rgrover1
Date:
Fri Jun 19 15:55:17 2015 +0100
Revision:
210:e7749aec4203
Parent:
209:d24159a1dad5
Child:
211:bf81b20ede23
Synchronized with git rev 0796184c

Author: Rohit Grover

introduce DiscoveredCharacteristic

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rgrover1 194:c99fc3160091 1 /* mbed Microcontroller Library
rgrover1 194:c99fc3160091 2 * Copyright (c) 2006-2013 ARM Limited
rgrover1 194:c99fc3160091 3 *
rgrover1 194:c99fc3160091 4 * Licensed under the Apache License, Version 2.0 (the "License");
rgrover1 194:c99fc3160091 5 * you may not use this file except in compliance with the License.
rgrover1 194:c99fc3160091 6 * You may obtain a copy of the License at
rgrover1 194:c99fc3160091 7 *
rgrover1 194:c99fc3160091 8 * http://www.apache.org/licenses/LICENSE-2.0
rgrover1 194:c99fc3160091 9 *
rgrover1 194:c99fc3160091 10 * Unless required by applicable law or agreed to in writing, software
rgrover1 194:c99fc3160091 11 * distributed under the License is distributed on an "AS IS" BASIS,
rgrover1 194:c99fc3160091 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rgrover1 194:c99fc3160091 13 * See the License for the specific language governing permissions and
rgrover1 194:c99fc3160091 14 * limitations under the License.
rgrover1 194:c99fc3160091 15 */
rgrover1 194:c99fc3160091 16
rgrover1 194:c99fc3160091 17 #include "btle_gattc.h"
rgrover1 195:061ed80ffbcf 18 #include "UUID.h"
rgrover1 194:c99fc3160091 19
rgrover1 194:c99fc3160091 20 #define 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 194:c99fc3160091 21 #define BLE_DB_DISCOVERY_MAX_CHAR_PER_SRV 4 /**< Maximum number of characteristics per service supported by this module. */
rgrover1 194:c99fc3160091 22
rgrover1 194:c99fc3160091 23 #define SRV_DISC_START_HANDLE 0x0001 /**< The start handle value used during service discovery. */
rgrover1 194:c99fc3160091 24
rgrover1 194:c99fc3160091 25
rgrover1 194:c99fc3160091 26 /**@brief Structure for holding information about the service and the characteristics found during
rgrover1 194:c99fc3160091 27 * the discovery process.
rgrover1 194:c99fc3160091 28 */
rgrover1 195:061ed80ffbcf 29 struct DiscoveredService {
rgrover1 195:061ed80ffbcf 30 DiscoveredService() {
rgrover1 195:061ed80ffbcf 31 /* empty */
rgrover1 195:061ed80ffbcf 32 }
rgrover1 195:061ed80ffbcf 33 DiscoveredService(ShortUUIDBytes_t uuidIn, Gap::Handle_t start, Gap::Handle_t end) {
rgrover1 195:061ed80ffbcf 34 setup(uuidIn, start, end);
rgrover1 195:061ed80ffbcf 35 }
rgrover1 195:061ed80ffbcf 36
rgrover1 195:061ed80ffbcf 37 void setup(ShortUUIDBytes_t uuidIn, Gap::Handle_t start, Gap::Handle_t end) {
rgrover1 195:061ed80ffbcf 38 uuid = uuidIn;
rgrover1 195:061ed80ffbcf 39 startHandle = start;
rgrover1 195:061ed80ffbcf 40 endHandle = end;
rgrover1 195:061ed80ffbcf 41 }
rgrover1 201:a13ada00eac7 42
rgrover1 208:12b6b06ffcd6 43 ShortUUIDBytes_t uuid; /**< UUID of the service. */
rgrover1 208:12b6b06ffcd6 44 Gap::Handle_t startHandle; /**< Service Handle Range. */
rgrover1 208:12b6b06ffcd6 45 Gap::Handle_t endHandle; /**< Service Handle Range. */
rgrover1 195:061ed80ffbcf 46 };
rgrover1 194:c99fc3160091 47
rgrover1 210:e7749aec4203 48 /**@brief Structure for holding information about the service and the characteristics found during
rgrover1 210:e7749aec4203 49 * the discovery process.
rgrover1 210:e7749aec4203 50 */
rgrover1 210:e7749aec4203 51 struct DiscoveredCharacteristic {
rgrover1 210:e7749aec4203 52 DiscoveredCharacteristic() {
rgrover1 210:e7749aec4203 53 /* empty */
rgrover1 210:e7749aec4203 54 }
rgrover1 210:e7749aec4203 55 DiscoveredCharacteristic(ShortUUIDBytes_t uuidIn, Gap::Handle_t start, Gap::Handle_t end) {
rgrover1 210:e7749aec4203 56 setup(uuidIn, start, end);
rgrover1 210:e7749aec4203 57 }
rgrover1 210:e7749aec4203 58
rgrover1 210:e7749aec4203 59 void setup(ShortUUIDBytes_t uuidIn, Gap::Handle_t start, Gap::Handle_t end) {
rgrover1 210:e7749aec4203 60 uuid = uuidIn;
rgrover1 210:e7749aec4203 61 startHandle = start;
rgrover1 210:e7749aec4203 62 endHandle = end;
rgrover1 210:e7749aec4203 63 }
rgrover1 210:e7749aec4203 64
rgrover1 210:e7749aec4203 65 ShortUUIDBytes_t uuid; /**< UUID of the service. */
rgrover1 210:e7749aec4203 66 Gap::Handle_t startHandle; /**< Service Handle Range. */
rgrover1 210:e7749aec4203 67 Gap::Handle_t endHandle; /**< Service Handle Range. */
rgrover1 210:e7749aec4203 68 };
rgrover1 210:e7749aec4203 69
rgrover1 207:d70392d1af99 70 struct DiscoveryStatus_t {
rgrover1 206:d8c5b97557f2 71 DiscoveredService services[BLE_DB_DISCOVERY_MAX_SRV]; /**< Information related to the current service being discovered.
rgrover1 206:d8c5b97557f2 72 * This is intended for internal use during service discovery. */
rgrover1 205:7b1c55e70f45 73
rgrover1 206:d8c5b97557f2 74 uint16_t connHandle; /**< Connection handle as provided by the SoftDevice. */
rgrover1 209:d24159a1dad5 75 uint8_t currSrvInd; /**< Index of the current service being discovered. This is intended for internal use during service discovery.*/
rgrover1 206:d8c5b97557f2 76 uint8_t srvCount; /**< Number of services at the peers GATT database.*/
rgrover1 206:d8c5b97557f2 77 uint8_t currCharInd; /**< Index of the current characteristic being discovered. This is intended for internal use during service discovery.*/
rgrover1 209:d24159a1dad5 78 uint8_t charCount; /**< Number of characteristics within the service.*/
rgrover1 206:d8c5b97557f2 79
rgrover1 206:d8c5b97557f2 80 bool serviceDiscoveryInProgress;
rgrover1 206:d8c5b97557f2 81 bool characteristicDiscoveryInProgress;
rgrover1 198:a69d3d4797e8 82 };
rgrover1 194:c99fc3160091 83
rgrover1 207:d70392d1af99 84 static DiscoveryStatus_t discoveryStatus;
rgrover1 195:061ed80ffbcf 85
rgrover1 194:c99fc3160091 86 void launchServiceDiscovery(Gap::Handle_t connectionHandle)
rgrover1 194:c99fc3160091 87 {
rgrover1 203:fc9a565a1b2f 88 discoveryStatus.connHandle = connectionHandle;
rgrover1 203:fc9a565a1b2f 89 discoveryStatus.srvCount = 0;
rgrover1 203:fc9a565a1b2f 90 discoveryStatus.currSrvInd = 0;
rgrover1 203:fc9a565a1b2f 91
rgrover1 200:be560f1834c0 92 discoveryStatus.serviceDiscoveryInProgress = true;
rgrover1 200:be560f1834c0 93 discoveryStatus.characteristicDiscoveryInProgress = false;
rgrover1 194:c99fc3160091 94 printf("launch service discovery returned %u\r\n", sd_ble_gattc_primary_services_discover(connectionHandle, SRV_DISC_START_HANDLE, NULL));
rgrover1 194:c99fc3160091 95 }
rgrover1 194:c99fc3160091 96
rgrover1 202:3ce954ce3eb8 97 void launchCharacteristicDiscovery(Gap::Handle_t connectionHandle, Gap::Handle_t startHandle, Gap::Handle_t endHandle) {
rgrover1 204:2d370bfdfa21 98 discoveryStatus.characteristicDiscoveryInProgress = true;
rgrover1 204:2d370bfdfa21 99 discoveryStatus.serviceDiscoveryInProgress = false;
rgrover1 204:2d370bfdfa21 100
rgrover1 204:2d370bfdfa21 101 discoveryStatus.connHandle = connectionHandle;
rgrover1 204:2d370bfdfa21 102 discoveryStatus.currCharInd = 0;
rgrover1 202:3ce954ce3eb8 103 }
rgrover1 202:3ce954ce3eb8 104
rgrover1 194:c99fc3160091 105 void bleGattcEventHandler(const ble_evt_t *p_ble_evt)
rgrover1 194:c99fc3160091 106 {
rgrover1 194:c99fc3160091 107 switch (p_ble_evt->header.evt_id) {
rgrover1 194:c99fc3160091 108 case BLE_GATTC_EVT_PRIM_SRVC_DISC_RSP:
rgrover1 194:c99fc3160091 109 switch (p_ble_evt->evt.gattc_evt.gatt_status) {
rgrover1 194:c99fc3160091 110 case BLE_GATT_STATUS_SUCCESS: {
rgrover1 194:c99fc3160091 111 printf("count of primary services: %u\r\n", p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.count);
rgrover1 195:061ed80ffbcf 112 discoveryStatus.connHandle = p_ble_evt->evt.gattc_evt.conn_handle;
rgrover1 195:061ed80ffbcf 113 discoveryStatus.currSrvInd = 0;
rgrover1 195:061ed80ffbcf 114 discoveryStatus.srvCount = p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.count;
rgrover1 194:c99fc3160091 115
rgrover1 195:061ed80ffbcf 116 for (unsigned serviceIndex = 0; serviceIndex < discoveryStatus.srvCount; serviceIndex++) {
rgrover1 195:061ed80ffbcf 117 discoveryStatus.services[serviceIndex].
rgrover1 195:061ed80ffbcf 118 setup(p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.services[serviceIndex].uuid.uuid,
rgrover1 195:061ed80ffbcf 119 p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.services[serviceIndex].handle_range.start_handle,
rgrover1 195:061ed80ffbcf 120 p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.services[serviceIndex].handle_range.end_handle);
rgrover1 194:c99fc3160091 121 }
rgrover1 195:061ed80ffbcf 122 break;
rgrover1 194:c99fc3160091 123 }
rgrover1 195:061ed80ffbcf 124
rgrover1 194:c99fc3160091 125 case BLE_GATT_STATUS_ATTERR_ATTRIBUTE_NOT_FOUND: {
rgrover1 197:de757ae3358b 126 discoveryStatus.serviceDiscoveryInProgress = false;
rgrover1 194:c99fc3160091 127 printf("end of service discovery\r\n");
rgrover1 194:c99fc3160091 128 break;
rgrover1 194:c99fc3160091 129 }
rgrover1 195:061ed80ffbcf 130
rgrover1 194:c99fc3160091 131 default: {
rgrover1 197:de757ae3358b 132 discoveryStatus.serviceDiscoveryInProgress = false;
rgrover1 194:c99fc3160091 133 printf("gatt failure status: %u\r\n", p_ble_evt->evt.gattc_evt.gatt_status);
rgrover1 194:c99fc3160091 134 break;
rgrover1 194:c99fc3160091 135 }
rgrover1 194:c99fc3160091 136 }
rgrover1 194:c99fc3160091 137 break;
rgrover1 194:c99fc3160091 138
rgrover1 194:c99fc3160091 139 case BLE_GATTC_EVT_CHAR_DISC_RSP: {
rgrover1 194:c99fc3160091 140 switch (p_ble_evt->evt.gattc_evt.gatt_status) {
rgrover1 194:c99fc3160091 141 default:
rgrover1 194:c99fc3160091 142 printf("gatt failure status: %u\r\n", p_ble_evt->evt.gattc_evt.gatt_status);
rgrover1 194:c99fc3160091 143 break;
rgrover1 194:c99fc3160091 144 }
rgrover1 194:c99fc3160091 145 break;
rgrover1 194:c99fc3160091 146 }
rgrover1 194:c99fc3160091 147 }
rgrover1 195:061ed80ffbcf 148
rgrover1 199:c2c831c55f3d 149 while (discoveryStatus.serviceDiscoveryInProgress && (discoveryStatus.currSrvInd < discoveryStatus.srvCount)) {
rgrover1 195:061ed80ffbcf 150 printf("%x [%u %u]\r\n",
rgrover1 195:061ed80ffbcf 151 p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.services[discoveryStatus.currSrvInd].uuid.uuid,
rgrover1 195:061ed80ffbcf 152 p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.services[discoveryStatus.currSrvInd].handle_range.start_handle,
rgrover1 195:061ed80ffbcf 153 p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.services[discoveryStatus.currSrvInd].handle_range.end_handle);
rgrover1 195:061ed80ffbcf 154
rgrover1 195:061ed80ffbcf 155 // ble_gattc_handle_range_t handleRange = {
rgrover1 195:061ed80ffbcf 156 // .start_handle = p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.services[discoveryStatus.currSrvInd].handle_range.start_handle,
rgrover1 195:061ed80ffbcf 157 // .end_handle = p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.services[discoveryStatus.currSrvInd].handle_range.end_handle
rgrover1 195:061ed80ffbcf 158 // };
rgrover1 195:061ed80ffbcf 159 // printf("characteristics_discover returned %u\r\n",
rgrover1 195:061ed80ffbcf 160 // sd_ble_gattc_characteristics_discover(p_ble_evt->evt.gattc_evt.conn_handle, &handleRange));
rgrover1 195:061ed80ffbcf 161
rgrover1 195:061ed80ffbcf 162 discoveryStatus.currSrvInd++;
rgrover1 195:061ed80ffbcf 163 }
rgrover1 199:c2c831c55f3d 164 if (discoveryStatus.serviceDiscoveryInProgress && (discoveryStatus.srvCount > 0)) {
rgrover1 196:70f1b8354d57 165 printf("services discover returned %u\r\n",
rgrover1 196:70f1b8354d57 166 sd_ble_gattc_primary_services_discover(p_ble_evt->evt.gattc_evt.conn_handle,
rgrover1 196:70f1b8354d57 167 p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.services[discoveryStatus.currSrvInd -1].handle_range.end_handle,
rgrover1 196:70f1b8354d57 168 NULL));
rgrover1 196:70f1b8354d57 169 }
rgrover1 194:c99fc3160091 170 }