https://developer.mbed.org/users/TheoHavercroft/code/nrf51-sdk/
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btle/custom/custom_helper.cpp
- Committer:
- bogdanm
- Date:
- 2014-03-26
- Revision:
- 0:eff01767de02
- Child:
- 6:bbb4357dc135
File content as of revision 0:eff01767de02:
/* mbed Microcontroller Library * Copyright (c) 2006-2013 ARM Limited * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "custom_helper.h" /**************************************************************************/ /*! @brief Adds the base UUID to the custom service. All UUIDs used by this service are based on this 128-bit UUID. @note This UUID needs to be added to the SoftDevice stack before adding the service's primary service via 'sd_ble_gatts_service_add' @param[in] p_uuid_base A pointer to the 128-bit UUID array (8*16) @returns The UUID type. A return value of 0 should be considered an error. @retval 0x00 BLE_UUID_TYPE_UNKNOWN @retval 0x01 BLE_UUID_TYPE_BLE @retval 0x02 BLE_UUID_TYPE_VENDOR_BEGIN @section EXAMPLE @code // Take note that bytes 2/3 are blank since these are used to identify // the primary service and individual characteristics #define CFG_CUSTOM_UUID_BASE "\x6E\x40\x00\x00\xB5\xA3\xF3\x93\xE0\xA9\xE5\x0E\x24\xDC\xCA\x9E" uint8_t uuid_type = custom_add_uuid_base(CFG_CUSTOM_UUID_BASE); ASSERT(uuid_type > 0, ERROR_NOT_FOUND); // We can now safely add the primary service and any characteristics // for our custom service ... @endcode */ /**************************************************************************/ uint8_t custom_add_uuid_base(uint8_t const * const p_uuid_base) { ble_uuid128_t base_uuid; uint8_t uuid_type = 0; /* Reverse the bytes since ble_uuid128_t is LSB */ for(uint8_t i=0; i<16; i++) { base_uuid.uuid128[i] = p_uuid_base[15-i]; } ASSERT_INT( ERROR_NONE, sd_ble_uuid_vs_add( &base_uuid, &uuid_type ), 0); return uuid_type; } /**************************************************************************/ /*! */ /**************************************************************************/ error_t custom_decode_uuid_base(uint8_t const * const p_uuid_base, ble_uuid_t * p_uuid) { uint8_t uuid_base_le[16]; /* Reverse the bytes since ble_uuid128_t is LSB */ for(uint8_t i=0; i<16; i++) { uuid_base_le[i] = p_uuid_base[15-i]; } ASSERT_STATUS( sd_ble_uuid_decode(16, uuid_base_le, p_uuid) ); return ERROR_NONE; } /**************************************************************************/ /*! @brief Adds a new characteristic to the custom service, assigning properties, a UUID add-on value, etc. @param[in] service_handle @param[in] p_uuid The 16-bit value to add to the base UUID for this characteristic (normally >1 since 1 is typically used by the primary service). @param[in] char_props The characteristic properties, as defined by ble_gatt_char_props_t @param[in] max_length The maximum length of this characeristic @param[in] p_char_handle @returns @retval ERROR_NONE Everything executed normally */ /**************************************************************************/ error_t custom_add_in_characteristic(uint16_t service_handle, ble_uuid_t* p_uuid, uint8_t properties, uint8_t *p_data, uint16_t min_length, uint16_t max_length, ble_gatts_char_handles_t* p_char_handle) { /* Characteristic metadata */ ble_gatts_attr_md_t cccd_md; ble_gatt_char_props_t char_props; memcpy(&char_props, &properties, 1); if ( char_props.notify || char_props.indicate ) { /* Notification requires cccd */ memclr_( &cccd_md, sizeof(ble_gatts_attr_md_t) ); cccd_md.vloc = BLE_GATTS_VLOC_STACK; BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.read_perm); BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.write_perm); } ble_gatts_char_md_t char_md = { 0 }; char_md.char_props = char_props; char_md.p_cccd_md = (char_props.notify || char_props.indicate ) ? &cccd_md : NULL; /* Attribute declaration */ ble_gatts_attr_md_t attr_md = { 0 }; attr_md.vloc = BLE_GATTS_VLOC_STACK; attr_md.vlen = (min_length == max_length) ? 0 : 1; if ( char_props.read || char_props.notify || char_props.indicate ) { BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.read_perm); } if ( char_props.write ) { BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.write_perm); } ble_gatts_attr_t attr_char_value = { 0 }; attr_char_value.p_uuid = p_uuid; attr_char_value.p_attr_md = &attr_md; attr_char_value.init_len = min_length; attr_char_value.max_len = max_length; attr_char_value.p_value = p_data; ASSERT_STATUS ( sd_ble_gatts_characteristic_add(service_handle, &char_md, &attr_char_value, p_char_handle) ); return ERROR_NONE; }