Lancaster University / BLE_API

Lancaster University's fork of the mbed BLE API. Lives on github, https://github.com/lancaster-university/BLE_API

Dependents:   microbit-dal microbit-dal microbit-ble-open microbit-dal ... more

Fork of BLE_API by Bluetooth Low Energy

public/DiscoveredCharacteristic.h@473:d10415d0a07d, 2015-06-19 (annotated)

Committer:
rgrover1
Date:
Fri Jun 19 15:51:59 2015 +0100
Revision:
473:d10415d0a07d
Parent:
472:2a040d99104c
Child:
475:eb7fbcfb0e85
Synchronized with git rev 71d64143

Author: Rohit Grover

expand on the comment header for read()

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rgrover1 470:150c2363f776 1 /* mbed Microcontroller Library
rgrover1 470:150c2363f776 2 * Copyright (c) 2006-2013 ARM Limited
rgrover1 470:150c2363f776 3 *
rgrover1 470:150c2363f776 4 * Licensed under the Apache License, Version 2.0 (the "License");
rgrover1 470:150c2363f776 5 * you may not use this file except in compliance with the License.
rgrover1 470:150c2363f776 6 * You may obtain a copy of the License at
rgrover1 470:150c2363f776 7 *
rgrover1 470:150c2363f776 8 * http://www.apache.org/licenses/LICENSE-2.0
rgrover1 470:150c2363f776 9 *
rgrover1 470:150c2363f776 10 * Unless required by applicable law or agreed to in writing, software
rgrover1 470:150c2363f776 11 * distributed under the License is distributed on an "AS IS" BASIS,
rgrover1 470:150c2363f776 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rgrover1 470:150c2363f776 13 * See the License for the specific language governing permissions and
rgrover1 470:150c2363f776 14 * limitations under the License.
rgrover1 470:150c2363f776 15 */
rgrover1 470:150c2363f776 16
rgrover1 470:150c2363f776 17 #ifndef __DISCOVERED_CHARACTERISTIC_H__
rgrover1 470:150c2363f776 18 #define __DISCOVERED_CHARACTERISTIC_H__
rgrover1 470:150c2363f776 19
rgrover1 470:150c2363f776 20 #include "UUID.h"
rgrover1 470:150c2363f776 21 #include "GattAttribute.h"
rgrover1 470:150c2363f776 22
rgrover1 470:150c2363f776 23 /**@brief Structure for holding information about the service and the characteristics found during
rgrover1 470:150c2363f776 24 * the discovery process.
rgrover1 470:150c2363f776 25 */
rgrover1 470:150c2363f776 26 class DiscoveredCharacteristic {
rgrover1 470:150c2363f776 27 public:
rgrover1 470:150c2363f776 28 struct Properties_t {
rgrover1 470:150c2363f776 29 static const uint8_t BROADCAST_PROPERTY_MASK = 0x01;
rgrover1 470:150c2363f776 30 static const uint8_t READ_PROPERTY_MASK = 0x02;
rgrover1 470:150c2363f776 31 static const uint8_t WRITE_WO_RESPONSE_PROPERTY_MASK = 0x04;
rgrover1 470:150c2363f776 32 static const uint8_t WRITE_PROPERTY_MASK = 0x08;
rgrover1 470:150c2363f776 33 static const uint8_t NOTIFY_PROPERTY_MASK = 0x10;
rgrover1 470:150c2363f776 34 static const uint8_t INDICATE_PROPERTY_MASK = 0x20;
rgrover1 470:150c2363f776 35 static const uint8_t AUTH_SIGNED_PROPERTY_MASK = 0x40;
rgrover1 470:150c2363f776 36
rgrover1 470:150c2363f776 37 Properties_t() : broadcast(0), read(0), write_wo_resp(0), write(0), notify(0), indicate(0), auth_signed_wr(0) {
rgrover1 470:150c2363f776 38 /* empty */
rgrover1 470:150c2363f776 39 }
rgrover1 470:150c2363f776 40
rgrover1 470:150c2363f776 41 Properties_t(uint8_t props) :
rgrover1 470:150c2363f776 42 broadcast(props & BROADCAST_PROPERTY_MASK),
rgrover1 470:150c2363f776 43 read(props & READ_PROPERTY_MASK),
rgrover1 470:150c2363f776 44 write_wo_resp(props & WRITE_WO_RESPONSE_PROPERTY_MASK),
rgrover1 470:150c2363f776 45 write(props & WRITE_PROPERTY_MASK),
rgrover1 470:150c2363f776 46 notify(props & NOTIFY_PROPERTY_MASK),
rgrover1 470:150c2363f776 47 indicate(props & INDICATE_PROPERTY_MASK),
rgrover1 470:150c2363f776 48 auth_signed_wr(props & AUTH_SIGNED_PROPERTY_MASK) {
rgrover1 470:150c2363f776 49 /* empty*/
rgrover1 470:150c2363f776 50 }
rgrover1 470:150c2363f776 51
rgrover1 470:150c2363f776 52 uint8_t broadcast :1; /**< Broadcasting of the value permitted. */
rgrover1 470:150c2363f776 53 uint8_t read :1; /**< Reading the value permitted. */
rgrover1 470:150c2363f776 54 uint8_t write_wo_resp :1; /**< Writing the value with Write Command permitted. */
rgrover1 470:150c2363f776 55 uint8_t write :1; /**< Writing the value with Write Request permitted. */
rgrover1 470:150c2363f776 56 uint8_t notify :1; /**< Notications of the value permitted. */
rgrover1 470:150c2363f776 57 uint8_t indicate :1; /**< Indications of the value permitted. */
rgrover1 470:150c2363f776 58 uint8_t auth_signed_wr :1; /**< Writing the value with Signed Write Command permitted. */
rgrover1 470:150c2363f776 59 };
rgrover1 470:150c2363f776 60
rgrover1 470:150c2363f776 61 struct ReadResponse_t {
rgrover1 470:150c2363f776 62 GattAttribute::Handle_t handle; /**< Attribute Handle. */
rgrover1 470:150c2363f776 63 uint16_t offset; /**< Offset of the attribute data. */
rgrover1 470:150c2363f776 64 uint16_t len; /**< Attribute data length. */
rgrover1 470:150c2363f776 65 const uint8_t *data; /**< Attribute data, variable length. */
rgrover1 470:150c2363f776 66 };
rgrover1 470:150c2363f776 67 typedef void (*ReadCallback_t)(const ReadResponse_t *params);
rgrover1 470:150c2363f776 68
rgrover1 470:150c2363f776 69 static void setupOnDataRead(ReadCallback_t callback) {
rgrover1 470:150c2363f776 70 onDataReadCallback = callback;
rgrover1 470:150c2363f776 71 }
rgrover1 470:150c2363f776 72
rgrover1 471:ed48300978d9 73 /**
rgrover1 471:ed48300978d9 74 * Initiate (or continue) a read for the value attribute, optionally at a
rgrover1 471:ed48300978d9 75 * given offset. If the Characteristic or Descriptor to be read is longer
rgrover1 471:ed48300978d9 76 * than ATT_MTU - 1, this function must be called multiple times with
rgrover1 471:ed48300978d9 77 * appropriate offset to read the complete value.
rgrover1 473:d10415d0a07d 78 *
rgrover1 473:d10415d0a07d 79 * @return BLE_ERROR_NONE if a read has been initiated, else
rgrover1 473:d10415d0a07d 80 * BLE_ERROR_INVALID_STATE if some internal state about the connection is invalid, or
rgrover1 473:d10415d0a07d 81 * BLE_STACK_BUSY if some client procedure already in progress.
rgrover1 471:ed48300978d9 82 */
rgrover1 472:2a040d99104c 83 virtual ble_error_t read(uint16_t offset = 0) = 0;
rgrover1 470:150c2363f776 84
rgrover1 470:150c2363f776 85 public:
rgrover1 470:150c2363f776 86 void setup(Properties_t propsIn,
rgrover1 470:150c2363f776 87 GattAttribute::Handle_t declHandleIn,
rgrover1 470:150c2363f776 88 GattAttribute::Handle_t valueHandleIn) {
rgrover1 470:150c2363f776 89 props = propsIn;
rgrover1 470:150c2363f776 90 declHandle = declHandleIn;
rgrover1 470:150c2363f776 91 valueHandle = valueHandleIn;
rgrover1 470:150c2363f776 92 }
rgrover1 470:150c2363f776 93
rgrover1 470:150c2363f776 94 void setup(UUID::ShortUUIDBytes_t uuidIn,
rgrover1 470:150c2363f776 95 Properties_t propsIn,
rgrover1 470:150c2363f776 96 GattAttribute::Handle_t declHandleIn,
rgrover1 470:150c2363f776 97 GattAttribute::Handle_t valueHandleIn) {
rgrover1 470:150c2363f776 98 uuid = uuidIn;
rgrover1 470:150c2363f776 99 props = propsIn;
rgrover1 470:150c2363f776 100 declHandle = declHandleIn;
rgrover1 470:150c2363f776 101 valueHandle = valueHandleIn;
rgrover1 470:150c2363f776 102 }
rgrover1 470:150c2363f776 103
rgrover1 470:150c2363f776 104 void setupLongUUID(UUID::LongUUIDBytes_t longUUID) {
rgrover1 470:150c2363f776 105 uuid.setupLong(longUUID);
rgrover1 470:150c2363f776 106 }
rgrover1 470:150c2363f776 107
rgrover1 470:150c2363f776 108 public:
rgrover1 470:150c2363f776 109 UUID::ShortUUIDBytes_t getShortUUID(void) const {
rgrover1 470:150c2363f776 110 return uuid.getShortUUID();
rgrover1 470:150c2363f776 111 }
rgrover1 470:150c2363f776 112
rgrover1 470:150c2363f776 113 const Properties_t& getProperties(void) const {
rgrover1 470:150c2363f776 114 return props;
rgrover1 470:150c2363f776 115 }
rgrover1 470:150c2363f776 116
rgrover1 470:150c2363f776 117 const GattAttribute::Handle_t& getDeclHandle(void) const {
rgrover1 470:150c2363f776 118 return declHandle;
rgrover1 470:150c2363f776 119 }
rgrover1 470:150c2363f776 120 const GattAttribute::Handle_t& getValueHandle(void) const {
rgrover1 470:150c2363f776 121 return valueHandle;
rgrover1 470:150c2363f776 122 }
rgrover1 470:150c2363f776 123
rgrover1 470:150c2363f776 124 public:
rgrover1 470:150c2363f776 125 DiscoveredCharacteristic() : uuid(UUID::ShortUUIDBytes_t(0)),
rgrover1 470:150c2363f776 126 props(),
rgrover1 470:150c2363f776 127 declHandle(GattAttribute::INVALID_HANDLE),
rgrover1 470:150c2363f776 128 valueHandle(GattAttribute::INVALID_HANDLE) {
rgrover1 470:150c2363f776 129 /* empty */
rgrover1 470:150c2363f776 130 }
rgrover1 470:150c2363f776 131
rgrover1 470:150c2363f776 132 private:
rgrover1 470:150c2363f776 133 UUID uuid;
rgrover1 470:150c2363f776 134 Properties_t props;
rgrover1 470:150c2363f776 135 GattAttribute::Handle_t declHandle;
rgrover1 470:150c2363f776 136 GattAttribute::Handle_t valueHandle;
rgrover1 470:150c2363f776 137
rgrover1 470:150c2363f776 138 static ReadCallback_t onDataReadCallback;
rgrover1 470:150c2363f776 139 };
rgrover1 470:150c2363f776 140
rgrover1 470:150c2363f776 141 #endif /*__DISCOVERED_CHARACTERISTIC_H__*/