Lancaster University / nRF51822

Clone of the nRF51822 repository from github The correct home is https://github.com/lancaster-university/nRF51822

Dependencies:   nrf51-sdk

Dependents:   microbit-dal microbit-ble-open microbit-dal-eddystone microbit-dal-ble-accelerometer-example ... more

source/btle/custom/custom_helper.cpp@456:da0323feba9b, 2015-11-02 (annotated)

Committer:
rgrover1
Date:
Mon Nov 02 09:05:10 2015 +0000
Revision:
456:da0323feba9b
Parent:
387:b13ab9a7ddb9
Child:
506:aab595b22981
Synchronized with git rev 97a65815

Author: Andres Amaya Garcia

Introduced changes for memory savings



Moved GattSecurityManager and GattClient to be allocated dynamically and

reduced the size of some arrays to increase memory savings.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Rohit Grover 22:c6ee8136847e 1 /* mbed Microcontroller Library
Rohit Grover 22:c6ee8136847e 2 * Copyright (c) 2006-2013 ARM Limited
Rohit Grover 22:c6ee8136847e 3 *
Rohit Grover 22:c6ee8136847e 4 * Licensed under the Apache License, Version 2.0 (the "License");
Rohit Grover 22:c6ee8136847e 5 * you may not use this file except in compliance with the License.
Rohit Grover 22:c6ee8136847e 6 * You may obtain a copy of the License at
Rohit Grover 22:c6ee8136847e 7 *
Rohit Grover 22:c6ee8136847e 8 * http://www.apache.org/licenses/LICENSE-2.0
Rohit Grover 22:c6ee8136847e 9 *
Rohit Grover 22:c6ee8136847e 10 * Unless required by applicable law or agreed to in writing, software
Rohit Grover 22:c6ee8136847e 11 * distributed under the License is distributed on an "AS IS" BASIS,
Rohit Grover 22:c6ee8136847e 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Rohit Grover 22:c6ee8136847e 13 * See the License for the specific language governing permissions and
Rohit Grover 22:c6ee8136847e 14 * limitations under the License.
Rohit Grover 22:c6ee8136847e 15 */
Rohit Grover 22:c6ee8136847e 16
Rohit Grover 22:c6ee8136847e 17 #include "custom_helper.h"
Rohit Grover 22:c6ee8136847e 18
Rohit Grover 22:c6ee8136847e 19 /*
Rohit Grover 22:c6ee8136847e 20 * The current version of the soft-device doesn't handle duplicate 128-bit UUIDs
Rohit Grover 22:c6ee8136847e 21 * very well. It is therefore necessary to filter away duplicates before
Rohit Grover 22:c6ee8136847e 22 * passing long UUIDs to sd_ble_uuid_vs_add(). The following types and data
Rohit Grover 22:c6ee8136847e 23 * structures involved in maintaining a local cache of 128-bit UUIDs.
Rohit Grover 22:c6ee8136847e 24 */
Rohit Grover 22:c6ee8136847e 25 typedef struct {
rgrover1 285:55ac765bcc8d 26 UUID::LongUUIDBytes_t uuid;
Rohit Grover 56:a1071b629aa3 27 uint8_t type;
Rohit Grover 22:c6ee8136847e 28 } converted_uuid_table_entry_t;
rgrover1 456:da0323feba9b 29 static const unsigned UUID_TABLE_MAX_ENTRIES = 4; /* This is the maximum number of 128-bit UUIDs with distinct bases that
Rohit Grover 66:b3680699d9a4 30 * we expect to be in use; increase this limit if needed. */
Rohit Grover 22:c6ee8136847e 31 static unsigned uuidTableEntries = 0; /* current usage of the table */
Rohit Grover 22:c6ee8136847e 32 converted_uuid_table_entry_t convertedUUIDTable[UUID_TABLE_MAX_ENTRIES];
Rohit Grover 22:c6ee8136847e 33
Rohit Grover 22:c6ee8136847e 34 /**
Rohit Grover 22:c6ee8136847e 35 * lookup the cache of previously converted 128-bit UUIDs to find a type value.
Rohit Grover 66:b3680699d9a4 36 * @param uuid base 128-bit UUID
Rohit Grover 22:c6ee8136847e 37 * @param recoveredType the type field of the 3-byte nRF's uuid.
Rohit Grover 22:c6ee8136847e 38 * @return true if a match is found.
Rohit Grover 22:c6ee8136847e 39 */
Rohit Grover 22:c6ee8136847e 40 static bool
rgrover1 285:55ac765bcc8d 41 lookupConvertedUUIDTable(const UUID::LongUUIDBytes_t uuid, uint8_t *recoveredType)
Rohit Grover 22:c6ee8136847e 42 {
Rohit Grover 22:c6ee8136847e 43 unsigned i;
Rohit Grover 22:c6ee8136847e 44 for (i = 0; i < uuidTableEntries; i++) {
rgrover1 97:e95e35845e1c 45 unsigned byteIndex;
rgrover1 285:55ac765bcc8d 46 for (byteIndex = 0; byteIndex < UUID::LENGTH_OF_LONG_UUID; byteIndex++) {
rgrover1 97:e95e35845e1c 47 /* Skip bytes 2 and 3, because they contain the shortUUID (16-bit) version of the
rgrover1 97:e95e35845e1c 48 * long UUID; and we're comparing against the remainder. */
rgrover1 97:e95e35845e1c 49 if ((byteIndex == 2) || (byteIndex == 3)) {
rgrover1 97:e95e35845e1c 50 continue;
rgrover1 97:e95e35845e1c 51 }
rgrover1 97:e95e35845e1c 52
rgrover1 97:e95e35845e1c 53 if (convertedUUIDTable[i].uuid[byteIndex] != uuid[byteIndex]) {
rgrover1 97:e95e35845e1c 54 break;
rgrover1 97:e95e35845e1c 55 }
rgrover1 97:e95e35845e1c 56 }
rgrover1 97:e95e35845e1c 57
rgrover1 285:55ac765bcc8d 58 if (byteIndex == UUID::LENGTH_OF_LONG_UUID) {
Rohit Grover 22:c6ee8136847e 59 *recoveredType = convertedUUIDTable[i].type;
Rohit Grover 22:c6ee8136847e 60 return true;
Rohit Grover 22:c6ee8136847e 61 }
Rohit Grover 22:c6ee8136847e 62 }
Rohit Grover 22:c6ee8136847e 63
Rohit Grover 22:c6ee8136847e 64 return false;
Rohit Grover 22:c6ee8136847e 65 }
Rohit Grover 22:c6ee8136847e 66
Rohit Grover 22:c6ee8136847e 67 static void
rgrover1 285:55ac765bcc8d 68 addToConvertedUUIDTable(const UUID::LongUUIDBytes_t uuid, uint8_t type)
Rohit Grover 22:c6ee8136847e 69 {
Rohit Grover 22:c6ee8136847e 70 if (uuidTableEntries == UUID_TABLE_MAX_ENTRIES) {
Rohit Grover 66:b3680699d9a4 71 return; /* recovery needed; or at least the user should be warned about this fact.*/
Rohit Grover 22:c6ee8136847e 72 }
Rohit Grover 22:c6ee8136847e 73
rgrover1 285:55ac765bcc8d 74 memcpy(convertedUUIDTable[uuidTableEntries].uuid, uuid, UUID::LENGTH_OF_LONG_UUID);
rgrover1 97:e95e35845e1c 75 convertedUUIDTable[uuidTableEntries].uuid[2] = 0;
rgrover1 97:e95e35845e1c 76 convertedUUIDTable[uuidTableEntries].uuid[3] = 0;
rgrover1 97:e95e35845e1c 77 convertedUUIDTable[uuidTableEntries].type = type;
Rohit Grover 22:c6ee8136847e 78 uuidTableEntries++;
Rohit Grover 22:c6ee8136847e 79 }
Rohit Grover 22:c6ee8136847e 80
Rohit Grover 22:c6ee8136847e 81 /**
Rohit Grover 22:c6ee8136847e 82 * The nRF transport has its own 3-byte representation of a UUID. If the user-
Rohit Grover 22:c6ee8136847e 83 * specified UUID is 128-bits wide, then the UUID base needs to be added to the
Rohit Grover 22:c6ee8136847e 84 * soft-device and converted to a 3-byte handle before being used further. This
Rohit Grover 22:c6ee8136847e 85 * function is responsible for this translation of user-specified UUIDs into
Rohit Grover 22:c6ee8136847e 86 * nRF's representation.
Rohit Grover 22:c6ee8136847e 87 *
Rohit Grover 22:c6ee8136847e 88 * @param[in] uuid
Rohit Grover 22:c6ee8136847e 89 * user-specified UUID
Rohit Grover 22:c6ee8136847e 90 * @return nRF
Rohit Grover 22:c6ee8136847e 91 * 3-byte UUID (containing a type and 16-bit UUID) representation
Rohit Grover 22:c6ee8136847e 92 * to be used with SVC calls.
Rohit Grover 22:c6ee8136847e 93 */
Rohit Grover 22:c6ee8136847e 94 ble_uuid_t custom_convert_to_nordic_uuid(const UUID &uuid)
Rohit Grover 22:c6ee8136847e 95 {
rgrover1 109:425faebc8201 96 ble_uuid_t nordicUUID;
rgrover1 109:425faebc8201 97 nordicUUID.uuid = uuid.getShortUUID();
rgrover1 109:425faebc8201 98 nordicUUID.type = BLE_UUID_TYPE_UNKNOWN; /* to be set below */
Rohit Grover 22:c6ee8136847e 99
Rohit Grover 22:c6ee8136847e 100 if (uuid.shortOrLong() == UUID::UUID_TYPE_SHORT) {
Rohit Grover 22:c6ee8136847e 101 nordicUUID.type = BLE_UUID_TYPE_BLE;
Rohit Grover 22:c6ee8136847e 102 } else {
Rohit Grover 22:c6ee8136847e 103 if (!lookupConvertedUUIDTable(uuid.getBaseUUID(), &nordicUUID.type)) {
Rohit Grover 22:c6ee8136847e 104 nordicUUID.type = custom_add_uuid_base(uuid.getBaseUUID());
Rohit Grover 22:c6ee8136847e 105 addToConvertedUUIDTable(uuid.getBaseUUID(), nordicUUID.type);
Rohit Grover 22:c6ee8136847e 106 }
Rohit Grover 22:c6ee8136847e 107 }
Rohit Grover 22:c6ee8136847e 108
Rohit Grover 22:c6ee8136847e 109 return nordicUUID;
Rohit Grover 22:c6ee8136847e 110 }
Rohit Grover 22:c6ee8136847e 111
Rohit Grover 22:c6ee8136847e 112 /**************************************************************************/
Rohit Grover 22:c6ee8136847e 113 /*!
Rohit Grover 22:c6ee8136847e 114 @brief Adds the base UUID to the custom service. All UUIDs used
Rohit Grover 22:c6ee8136847e 115 by this service are based on this 128-bit UUID.
Rohit Grover 22:c6ee8136847e 116
Rohit Grover 22:c6ee8136847e 117 @note This UUID needs to be added to the SoftDevice stack before
Rohit Grover 22:c6ee8136847e 118 adding the service's primary service via
Rohit Grover 22:c6ee8136847e 119 'sd_ble_gatts_service_add'
Rohit Grover 22:c6ee8136847e 120
Rohit Grover 22:c6ee8136847e 121 @param[in] p_uuid_base A pointer to the 128-bit UUID array (8*16)
Rohit Grover 22:c6ee8136847e 122
Rohit Grover 22:c6ee8136847e 123 @returns The UUID type.
Rohit Grover 22:c6ee8136847e 124 A return value of 0 should be considered an error.
Rohit Grover 22:c6ee8136847e 125
Rohit Grover 22:c6ee8136847e 126 @retval 0x00 BLE_UUID_TYPE_UNKNOWN
Rohit Grover 22:c6ee8136847e 127 @retval 0x01 BLE_UUID_TYPE_BLE
Rohit Grover 22:c6ee8136847e 128 @retval 0x02 BLE_UUID_TYPE_VENDOR_BEGIN
Rohit Grover 22:c6ee8136847e 129
Rohit Grover 22:c6ee8136847e 130 @section EXAMPLE
Rohit Grover 22:c6ee8136847e 131 @code
Rohit Grover 22:c6ee8136847e 132
Rohit Grover 22:c6ee8136847e 133 // Take note that bytes 2/3 are blank since these are used to identify
Rohit Grover 22:c6ee8136847e 134 // the primary service and individual characteristics
Rohit Grover 22:c6ee8136847e 135 #define CFG_CUSTOM_UUID_BASE "\x6E\x40\x00\x00\xB5\xA3\xF3\x93\xE0\xA9\xE5\x0E\x24\xDC\xCA\x9E"
Rohit Grover 22:c6ee8136847e 136
Rohit Grover 22:c6ee8136847e 137 uint8_t uuid_type = custom_add_uuid_base(CFG_CUSTOM_UUID_BASE);
Rohit Grover 22:c6ee8136847e 138 ASSERT(uuid_type > 0, ERROR_NOT_FOUND);
Rohit Grover 22:c6ee8136847e 139
Rohit Grover 22:c6ee8136847e 140 // We can now safely add the primary service and any characteristics
Rohit Grover 22:c6ee8136847e 141 // for our custom service ...
Rohit Grover 22:c6ee8136847e 142
Rohit Grover 22:c6ee8136847e 143 @endcode
Rohit Grover 22:c6ee8136847e 144 */
Rohit Grover 22:c6ee8136847e 145 /**************************************************************************/
Rohit Grover 22:c6ee8136847e 146 uint8_t custom_add_uuid_base(uint8_t const *const p_uuid_base)
Rohit Grover 22:c6ee8136847e 147 {
Rohit Grover 22:c6ee8136847e 148 ble_uuid128_t base_uuid;
Rohit Grover 22:c6ee8136847e 149 uint8_t uuid_type = 0;
Rohit Grover 22:c6ee8136847e 150
Rohit Grover 22:c6ee8136847e 151 /* Reverse the bytes since ble_uuid128_t is LSB */
rgrover1 285:55ac765bcc8d 152 for (unsigned i = 0; i < UUID::LENGTH_OF_LONG_UUID; i++) {
rgrover1 285:55ac765bcc8d 153 base_uuid.uuid128[i] = p_uuid_base[UUID::LENGTH_OF_LONG_UUID - 1 - i];
Rohit Grover 22:c6ee8136847e 154 }
Rohit Grover 22:c6ee8136847e 155
Rohit Grover 22:c6ee8136847e 156 ASSERT_INT( ERROR_NONE, sd_ble_uuid_vs_add( &base_uuid, &uuid_type ), 0);
Rohit Grover 22:c6ee8136847e 157
Rohit Grover 22:c6ee8136847e 158 return uuid_type;
Rohit Grover 22:c6ee8136847e 159 }
Rohit Grover 22:c6ee8136847e 160
Rohit Grover 22:c6ee8136847e 161 /**************************************************************************/
Rohit Grover 22:c6ee8136847e 162 /*!
Rohit Grover 22:c6ee8136847e 163
Rohit Grover 22:c6ee8136847e 164 */
Rohit Grover 22:c6ee8136847e 165 /**************************************************************************/
Rohit Grover 22:c6ee8136847e 166 error_t custom_decode_uuid_base(uint8_t const *const p_uuid_base,
Rohit Grover 22:c6ee8136847e 167 ble_uuid_t *p_uuid)
Rohit Grover 22:c6ee8136847e 168 {
rgrover1 285:55ac765bcc8d 169 UUID::LongUUIDBytes_t uuid_base_le;
Rohit Grover 22:c6ee8136847e 170
Rohit Grover 22:c6ee8136847e 171 /* Reverse the bytes since ble_uuid128_t is LSB */
rgrover1 285:55ac765bcc8d 172 for (uint8_t i = 0; i < UUID::LENGTH_OF_LONG_UUID; i++) {
rgrover1 285:55ac765bcc8d 173 uuid_base_le[i] = p_uuid_base[UUID::LENGTH_OF_LONG_UUID - 1 - i];
Rohit Grover 22:c6ee8136847e 174 }
Rohit Grover 22:c6ee8136847e 175
rgrover1 285:55ac765bcc8d 176 ASSERT_STATUS( sd_ble_uuid_decode(UUID::LENGTH_OF_LONG_UUID, uuid_base_le, p_uuid));
Rohit Grover 22:c6ee8136847e 177
Rohit Grover 22:c6ee8136847e 178 return ERROR_NONE;
Rohit Grover 22:c6ee8136847e 179 }
Rohit Grover 22:c6ee8136847e 180
Rohit Grover 22:c6ee8136847e 181 /**************************************************************************/
Rohit Grover 22:c6ee8136847e 182 /*!
Rohit Grover 22:c6ee8136847e 183 @brief Adds a new characteristic to the custom service, assigning
Rohit Grover 22:c6ee8136847e 184 properties, a UUID add-on value, etc.
Rohit Grover 22:c6ee8136847e 185
Rohit Grover 22:c6ee8136847e 186 @param[in] service_handle
Rohit Grover 22:c6ee8136847e 187 @param[in] p_uuid The 16-bit value to add to the base UUID
Rohit Grover 22:c6ee8136847e 188 for this characteristic (normally >1
Rohit Grover 22:c6ee8136847e 189 since 1 is typically used by the primary
Rohit Grover 22:c6ee8136847e 190 service).
Rohit Grover 22:c6ee8136847e 191 @param[in] char_props The characteristic properties, as
Rohit Grover 22:c6ee8136847e 192 defined by ble_gatt_char_props_t
Rohit Grover 22:c6ee8136847e 193 @param[in] max_length The maximum length of this characeristic
rgrover1 126:e6114201f092 194 @param[out] p_char_handle
Rohit Grover 22:c6ee8136847e 195
Rohit Grover 22:c6ee8136847e 196 @returns
Rohit Grover 22:c6ee8136847e 197 @retval ERROR_NONE Everything executed normally
Rohit Grover 22:c6ee8136847e 198 */
Rohit Grover 22:c6ee8136847e 199 /**************************************************************************/
rgrover1 156:8e97c41fd7ab 200 error_t custom_add_in_characteristic(uint16_t service_handle,
rgrover1 156:8e97c41fd7ab 201 ble_uuid_t *p_uuid,
rgrover1 156:8e97c41fd7ab 202 uint8_t properties,
rgrover1 371:8f7d2137727a 203 SecurityManager::SecurityMode_t requiredSecurity,
rgrover1 156:8e97c41fd7ab 204 uint8_t *p_data,
rgrover1 156:8e97c41fd7ab 205 uint16_t min_length,
rgrover1 156:8e97c41fd7ab 206 uint16_t max_length,
rgrover1 156:8e97c41fd7ab 207 const uint8_t *userDescriptionDescriptorValuePtr,
rgrover1 156:8e97c41fd7ab 208 uint16_t userDescriptionDescriptorValueLen,
rgrover1 156:8e97c41fd7ab 209 bool readAuthorization,
rgrover1 156:8e97c41fd7ab 210 bool writeAuthorization,
rgrover1 156:8e97c41fd7ab 211 ble_gatts_char_handles_t *p_char_handle)
Rohit Grover 22:c6ee8136847e 212 {
Rohit Grover 22:c6ee8136847e 213 /* Characteristic metadata */
Rohit Grover 22:c6ee8136847e 214 ble_gatts_attr_md_t cccd_md;
Rohit Grover 22:c6ee8136847e 215 ble_gatt_char_props_t char_props;
Rohit Grover 22:c6ee8136847e 216
Rohit Grover 22:c6ee8136847e 217 memcpy(&char_props, &properties, 1);
Rohit Grover 22:c6ee8136847e 218
Rohit Grover 22:c6ee8136847e 219 if (char_props.notify || char_props.indicate) {
Rohit Grover 22:c6ee8136847e 220 /* Notification requires cccd */
Rohit Grover 22:c6ee8136847e 221 memclr_( &cccd_md, sizeof(ble_gatts_attr_md_t));
Rohit Grover 22:c6ee8136847e 222 cccd_md.vloc = BLE_GATTS_VLOC_STACK;
Rohit Grover 22:c6ee8136847e 223 BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.read_perm);
Rohit Grover 22:c6ee8136847e 224 BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.write_perm);
Rohit Grover 22:c6ee8136847e 225 }
Rohit Grover 22:c6ee8136847e 226
Rohit Grover 22:c6ee8136847e 227 ble_gatts_char_md_t char_md = {0};
Rohit Grover 22:c6ee8136847e 228
Rohit Grover 22:c6ee8136847e 229 char_md.char_props = char_props;
Rohit Grover 22:c6ee8136847e 230 char_md.p_cccd_md =
Rohit Grover 22:c6ee8136847e 231 (char_props.notify || char_props.indicate) ? &cccd_md : NULL;
rgrover1 119:3ba3e377b972 232 if ((userDescriptionDescriptorValueLen > 0) && (userDescriptionDescriptorValuePtr != NULL)) {
rgrover1 119:3ba3e377b972 233 char_md.p_char_user_desc = const_cast<uint8_t *>(userDescriptionDescriptorValuePtr);
rgrover1 119:3ba3e377b972 234 char_md.char_user_desc_max_size = userDescriptionDescriptorValueLen;
rgrover1 119:3ba3e377b972 235 char_md.char_user_desc_size = userDescriptionDescriptorValueLen;
rgrover1 119:3ba3e377b972 236 }
Rohit Grover 22:c6ee8136847e 237
Rohit Grover 22:c6ee8136847e 238 /* Attribute declaration */
rgrover1 84:658e5ec772a1 239 ble_gatts_attr_md_t attr_md = {0};
rgrover1 84:658e5ec772a1 240
rgrover1 84:658e5ec772a1 241 attr_md.rd_auth = readAuthorization;
rgrover1 84:658e5ec772a1 242 attr_md.wr_auth = writeAuthorization;
Rohit Grover 22:c6ee8136847e 243
Rohit Grover 22:c6ee8136847e 244 attr_md.vloc = BLE_GATTS_VLOC_STACK;
Rohit Grover 22:c6ee8136847e 245 attr_md.vlen = (min_length == max_length) ? 0 : 1;
Rohit Grover 22:c6ee8136847e 246
Rohit Grover 22:c6ee8136847e 247 if (char_props.read || char_props.notify || char_props.indicate) {
rgrover1 131:b21411170d00 248 switch (requiredSecurity) {
rgrover1 371:8f7d2137727a 249 case SecurityManager::SECURITY_MODE_ENCRYPTION_OPEN_LINK :
rgrover1 131:b21411170d00 250 BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.read_perm);
rgrover1 131:b21411170d00 251 break;
rgrover1 371:8f7d2137727a 252 case SecurityManager::SECURITY_MODE_ENCRYPTION_NO_MITM :
rgrover1 131:b21411170d00 253 BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&attr_md.read_perm);
rgrover1 131:b21411170d00 254 break;
rgrover1 371:8f7d2137727a 255 case SecurityManager::SECURITY_MODE_ENCRYPTION_WITH_MITM :
rgrover1 131:b21411170d00 256 BLE_GAP_CONN_SEC_MODE_SET_ENC_WITH_MITM(&attr_md.read_perm);
rgrover1 131:b21411170d00 257 break;
rgrover1 371:8f7d2137727a 258 case SecurityManager::SECURITY_MODE_SIGNED_NO_MITM :
rgrover1 131:b21411170d00 259 BLE_GAP_CONN_SEC_MODE_SET_SIGNED_NO_MITM(&attr_md.read_perm);
rgrover1 131:b21411170d00 260 break;
rgrover1 371:8f7d2137727a 261 case SecurityManager::SECURITY_MODE_SIGNED_WITH_MITM :
rgrover1 131:b21411170d00 262 BLE_GAP_CONN_SEC_MODE_SET_SIGNED_WITH_MITM(&attr_md.read_perm);
rgrover1 131:b21411170d00 263 break;
rgrover1 157:0fa76927dcfe 264 default:
rgrover1 157:0fa76927dcfe 265 break;
rgrover1 131:b21411170d00 266 };
Rohit Grover 22:c6ee8136847e 267 }
Rohit Grover 22:c6ee8136847e 268
marcuschang 85:17fe69405098 269 if (char_props.write || char_props.write_wo_resp) {
rgrover1 131:b21411170d00 270 switch (requiredSecurity) {
rgrover1 371:8f7d2137727a 271 case SecurityManager::SECURITY_MODE_ENCRYPTION_OPEN_LINK :
rgrover1 131:b21411170d00 272 BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.write_perm);
rgrover1 131:b21411170d00 273 break;
rgrover1 371:8f7d2137727a 274 case SecurityManager::SECURITY_MODE_ENCRYPTION_NO_MITM :
rgrover1 131:b21411170d00 275 BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&attr_md.write_perm);
rgrover1 131:b21411170d00 276 break;
rgrover1 371:8f7d2137727a 277 case SecurityManager::SECURITY_MODE_ENCRYPTION_WITH_MITM :
rgrover1 131:b21411170d00 278 BLE_GAP_CONN_SEC_MODE_SET_ENC_WITH_MITM(&attr_md.write_perm);
rgrover1 131:b21411170d00 279 break;
rgrover1 371:8f7d2137727a 280 case SecurityManager::SECURITY_MODE_SIGNED_NO_MITM :
rgrover1 131:b21411170d00 281 BLE_GAP_CONN_SEC_MODE_SET_SIGNED_NO_MITM(&attr_md.write_perm);
rgrover1 131:b21411170d00 282 break;
rgrover1 371:8f7d2137727a 283 case SecurityManager::SECURITY_MODE_SIGNED_WITH_MITM :
rgrover1 131:b21411170d00 284 BLE_GAP_CONN_SEC_MODE_SET_SIGNED_WITH_MITM(&attr_md.write_perm);
rgrover1 131:b21411170d00 285 break;
rgrover1 157:0fa76927dcfe 286 default:
rgrover1 157:0fa76927dcfe 287 break;
rgrover1 131:b21411170d00 288 };
Rohit Grover 22:c6ee8136847e 289 }
Rohit Grover 22:c6ee8136847e 290
Rohit Grover 22:c6ee8136847e 291 ble_gatts_attr_t attr_char_value = {0};
Rohit Grover 22:c6ee8136847e 292
Rohit Grover 22:c6ee8136847e 293 attr_char_value.p_uuid = p_uuid;
Rohit Grover 22:c6ee8136847e 294 attr_char_value.p_attr_md = &attr_md;
Rohit Grover 22:c6ee8136847e 295 attr_char_value.init_len = min_length;
Rohit Grover 22:c6ee8136847e 296 attr_char_value.max_len = max_length;
Rohit Grover 22:c6ee8136847e 297 attr_char_value.p_value = p_data;
Rohit Grover 22:c6ee8136847e 298
Rohit Grover 22:c6ee8136847e 299 ASSERT_STATUS ( sd_ble_gatts_characteristic_add(service_handle,
Rohit Grover 22:c6ee8136847e 300 &char_md,
Rohit Grover 22:c6ee8136847e 301 &attr_char_value,
Rohit Grover 22:c6ee8136847e 302 p_char_handle));
Rohit Grover 22:c6ee8136847e 303
Rohit Grover 22:c6ee8136847e 304 return ERROR_NONE;
Rohit Grover 22:c6ee8136847e 305 }
Rohit Grover 59:2819e564b613 306
Rohit Grover 59:2819e564b613 307
Rohit Grover 59:2819e564b613 308
Rohit Grover 59:2819e564b613 309 /**************************************************************************/
Rohit Grover 59:2819e564b613 310 /*!
Rohit Grover 59:2819e564b613 311 @brief Adds a new descriptor to the custom service, assigning
Rohit Grover 59:2819e564b613 312 value, a UUID add-on value, etc.
Rohit Grover 59:2819e564b613 313
Rohit Grover 59:2819e564b613 314 @param[in] char_handle
Rohit Grover 59:2819e564b613 315 @param[in] p_uuid The 16-bit value to add to the base UUID
Rohit Grover 59:2819e564b613 316 for this descriptor (normally >1
Rohit Grover 59:2819e564b613 317 since 1 is typically used by the primary
Rohit Grover 59:2819e564b613 318 service).
Rohit Grover 59:2819e564b613 319 @param[in] max_length The maximum length of this descriptor
Rohit Grover 59:2819e564b613 320
Rohit Grover 59:2819e564b613 321 @returns
Rohit Grover 59:2819e564b613 322 @retval ERROR_NONE Everything executed normally
Rohit Grover 59:2819e564b613 323 */
Rohit Grover 59:2819e564b613 324 /**************************************************************************/
Rohit Grover 59:2819e564b613 325 error_t custom_add_in_descriptor(uint16_t char_handle,
Rohit Grover 59:2819e564b613 326 ble_uuid_t *p_uuid,
Rohit Grover 59:2819e564b613 327 uint8_t *p_data,
Rohit Grover 59:2819e564b613 328 uint16_t min_length,
Rohit Grover 59:2819e564b613 329 uint16_t max_length,
Rohit Grover 59:2819e564b613 330 uint16_t *p_desc_handle)
Rohit Grover 59:2819e564b613 331 {
Rohit Grover 59:2819e564b613 332 /* Descriptor metadata */
Rohit Grover 59:2819e564b613 333 ble_gatts_attr_md_t desc_md = {0};
Rohit Grover 59:2819e564b613 334
Rohit Grover 59:2819e564b613 335 desc_md.vloc = BLE_GATTS_VLOC_STACK;
Rohit Grover 59:2819e564b613 336 desc_md.vlen = (min_length == max_length) ? 0 : 1;
Rohit Grover 59:2819e564b613 337
Rohit Grover 59:2819e564b613 338 /* Make it readable and writable */
Rohit Grover 59:2819e564b613 339 BLE_GAP_CONN_SEC_MODE_SET_OPEN(&desc_md.read_perm);
Rohit Grover 59:2819e564b613 340 BLE_GAP_CONN_SEC_MODE_SET_OPEN(&desc_md.write_perm);
Rohit Grover 59:2819e564b613 341
Rohit Grover 59:2819e564b613 342 ble_gatts_attr_t attr_desc = {0};
Rohit Grover 59:2819e564b613 343
Rohit Grover 59:2819e564b613 344 attr_desc.p_uuid = p_uuid;
Rohit Grover 59:2819e564b613 345 attr_desc.p_attr_md = &desc_md;
Rohit Grover 59:2819e564b613 346 attr_desc.init_len = min_length;
Rohit Grover 59:2819e564b613 347 attr_desc.max_len = max_length;
Rohit Grover 59:2819e564b613 348 attr_desc.p_value = p_data;
Rohit Grover 59:2819e564b613 349
Rohit Grover 59:2819e564b613 350 ASSERT_STATUS ( sd_ble_gatts_descriptor_add(char_handle,
Rohit Grover 59:2819e564b613 351 &attr_desc,
Rohit Grover 59:2819e564b613 352 p_desc_handle));
Rohit Grover 59:2819e564b613 353
Rohit Grover 59:2819e564b613 354 return ERROR_NONE;
rgrover1 82:6c51cbe4bc12 355 }