YUFEI JIANG / BLE_API_Tiny_BLE

BLE_API_Tiny_BLE

Dependents:   CSSE4011_BLE_IMU

Fork of BLE_API by Bluetooth Low Energy

public/Gap.h@337:e7c2eb38f5cc, 2015-04-15 (annotated)

Committer:
rgrover1
Date:
Wed Apr 15 09:05:11 2015 +0100
Revision:
337:e7c2eb38f5cc
Parent:
325:501ad8b8bbe5
Child:
341:8a104d9d80c1
Synchronized with git rev 89b44560

Author: Rohit Grover

switch access privileges for several of the callback related members to 'protected'



it should be possible for a stack-specific implementation to override the defaults.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rgrover1 260:ea7f9f14cc15 1 /* mbed Microcontroller Library
rgrover1 260:ea7f9f14cc15 2 * Copyright (c) 2006-2013 ARM Limited
rgrover1 260:ea7f9f14cc15 3 *
rgrover1 260:ea7f9f14cc15 4 * Licensed under the Apache License, Version 2.0 (the "License");
rgrover1 260:ea7f9f14cc15 5 * you may not use this file except in compliance with the License.
rgrover1 260:ea7f9f14cc15 6 * You may obtain a copy of the License at
rgrover1 260:ea7f9f14cc15 7 *
rgrover1 260:ea7f9f14cc15 8 * http://www.apache.org/licenses/LICENSE-2.0
rgrover1 260:ea7f9f14cc15 9 *
rgrover1 260:ea7f9f14cc15 10 * Unless required by applicable law or agreed to in writing, software
rgrover1 260:ea7f9f14cc15 11 * distributed under the License is distributed on an "AS IS" BASIS,
rgrover1 260:ea7f9f14cc15 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rgrover1 260:ea7f9f14cc15 13 * See the License for the specific language governing permissions and
rgrover1 260:ea7f9f14cc15 14 * limitations under the License.
rgrover1 260:ea7f9f14cc15 15 */
rgrover1 260:ea7f9f14cc15 16
rgrover1 260:ea7f9f14cc15 17 #ifndef __GAP_H__
rgrover1 260:ea7f9f14cc15 18 #define __GAP_H__
rgrover1 260:ea7f9f14cc15 19
rgrover1 260:ea7f9f14cc15 20 #include "GapAdvertisingData.h"
rgrover1 260:ea7f9f14cc15 21 #include "GapAdvertisingParams.h"
rgrover1 260:ea7f9f14cc15 22 #include "GapEvents.h"
rgrover1 260:ea7f9f14cc15 23 #include "CallChain.h"
rgrover1 260:ea7f9f14cc15 24
rgrover1 260:ea7f9f14cc15 25 using namespace mbed;
rgrover1 260:ea7f9f14cc15 26
rgrover1 260:ea7f9f14cc15 27 class Gap {
rgrover1 260:ea7f9f14cc15 28 public:
rgrover1 260:ea7f9f14cc15 29 typedef enum addr_type_e {
rgrover1 260:ea7f9f14cc15 30 ADDR_TYPE_PUBLIC = 0,
rgrover1 260:ea7f9f14cc15 31 ADDR_TYPE_RANDOM_STATIC,
rgrover1 260:ea7f9f14cc15 32 ADDR_TYPE_RANDOM_PRIVATE_RESOLVABLE,
rgrover1 260:ea7f9f14cc15 33 ADDR_TYPE_RANDOM_PRIVATE_NON_RESOLVABLE
rgrover1 260:ea7f9f14cc15 34 } addr_type_t;
rgrover1 260:ea7f9f14cc15 35
rgrover1 260:ea7f9f14cc15 36 static const unsigned ADDR_LEN = 6;
rgrover1 260:ea7f9f14cc15 37 typedef uint8_t address_t[ADDR_LEN];
rgrover1 260:ea7f9f14cc15 38
rgrover1 260:ea7f9f14cc15 39 /**
rgrover1 260:ea7f9f14cc15 40 * Enumeration for disconnection reasons. The values for these reasons are
rgrover1 260:ea7f9f14cc15 41 * derived from Nordic's implementation; but the reasons are meant to be
rgrover1 260:ea7f9f14cc15 42 * independent of the transport. If you are returned a reason which is not
rgrover1 260:ea7f9f14cc15 43 * covered by this enumeration, then please refer to the underlying
rgrover1 260:ea7f9f14cc15 44 * transport library.
rgrover1 260:ea7f9f14cc15 45 */
rgrover1 260:ea7f9f14cc15 46 enum DisconnectionReason_t {
rgrover1 260:ea7f9f14cc15 47 REMOTE_USER_TERMINATED_CONNECTION = 0x13,
rgrover1 260:ea7f9f14cc15 48 LOCAL_HOST_TERMINATED_CONNECTION = 0x16,
rgrover1 260:ea7f9f14cc15 49 CONN_INTERVAL_UNACCEPTABLE = 0x3B,
rgrover1 260:ea7f9f14cc15 50 };
rgrover1 260:ea7f9f14cc15 51
rgrover1 260:ea7f9f14cc15 52 /* Describes the current state of the device (more than one bit can be set) */
rgrover1 260:ea7f9f14cc15 53 typedef struct GapState_s {
rgrover1 260:ea7f9f14cc15 54 unsigned advertising : 1; /**< peripheral is currently advertising */
rgrover1 260:ea7f9f14cc15 55 unsigned connected : 1; /**< peripheral is connected to a central */
rgrover1 260:ea7f9f14cc15 56 } GapState_t;
rgrover1 260:ea7f9f14cc15 57
rgrover1 260:ea7f9f14cc15 58 typedef uint16_t Handle_t;
rgrover1 260:ea7f9f14cc15 59
rgrover1 260:ea7f9f14cc15 60 typedef struct {
rgrover1 260:ea7f9f14cc15 61 uint16_t minConnectionInterval; /**< Minimum Connection Interval in 1.25 ms units, see @ref BLE_GAP_CP_LIMITS.*/
rgrover1 260:ea7f9f14cc15 62 uint16_t maxConnectionInterval; /**< Maximum Connection Interval in 1.25 ms units, see @ref BLE_GAP_CP_LIMITS.*/
rgrover1 260:ea7f9f14cc15 63 uint16_t slaveLatency; /**< Slave Latency in number of connection events, see @ref BLE_GAP_CP_LIMITS.*/
rgrover1 260:ea7f9f14cc15 64 uint16_t connectionSupervisionTimeout; /**< Connection Supervision Timeout in 10 ms units, see @ref BLE_GAP_CP_LIMITS.*/
rgrover1 260:ea7f9f14cc15 65 } ConnectionParams_t;
rgrover1 260:ea7f9f14cc15 66
rgrover1 260:ea7f9f14cc15 67 static const uint16_t UNIT_1_25_MS = 1250; /**< Number of microseconds in 1.25 milliseconds. */
rgrover1 260:ea7f9f14cc15 68 static const uint16_t UNIT_0_625_MS = 650; /**< Number of microseconds in 0.625 milliseconds. */
rgrover1 260:ea7f9f14cc15 69 static uint16_t MSEC_TO_GAP_DURATION_UNITS(uint32_t durationInMillis) {
rgrover1 260:ea7f9f14cc15 70 return (durationInMillis * 1000) / UNIT_1_25_MS;
rgrover1 260:ea7f9f14cc15 71 }
rgrover1 260:ea7f9f14cc15 72 static uint16_t MSEC_TO_ADVERTISEMENT_DURATION_UNITS(uint32_t durationInMillis) {
rgrover1 260:ea7f9f14cc15 73 return (durationInMillis * 1000) / UNIT_0_625_MS;
rgrover1 260:ea7f9f14cc15 74 }
rgrover1 325:501ad8b8bbe5 75 static uint16_t GAP_DURATION_UNITS_TO_MS(uint16_t gapUnits) {
rgrover1 325:501ad8b8bbe5 76 return (gapUnits * UNIT_0_625_MS) / 1000;
rgrover1 325:501ad8b8bbe5 77 }
rgrover1 260:ea7f9f14cc15 78
rgrover1 260:ea7f9f14cc15 79 typedef void (*EventCallback_t)(void);
rgrover1 260:ea7f9f14cc15 80 typedef void (*ConnectionEventCallback_t)(Handle_t, addr_type_t peerAddrType, const address_t peerAddr, const ConnectionParams_t *);
rgrover1 260:ea7f9f14cc15 81 typedef void (*DisconnectionEventCallback_t)(Handle_t, DisconnectionReason_t);
rgrover1 260:ea7f9f14cc15 82
rgrover1 260:ea7f9f14cc15 83 friend class BLEDevice;
rgrover1 260:ea7f9f14cc15 84 private:
rgrover1 260:ea7f9f14cc15 85 /* These functions must be defined in the sub-class */
rgrover1 260:ea7f9f14cc15 86 virtual ble_error_t setAddress(addr_type_t type, const address_t address) = 0;
rgrover1 260:ea7f9f14cc15 87 virtual ble_error_t getAddress(addr_type_t *typeP, address_t address) = 0;
rgrover1 260:ea7f9f14cc15 88 virtual ble_error_t setAdvertisingData(const GapAdvertisingData &, const GapAdvertisingData &) = 0;
rgrover1 260:ea7f9f14cc15 89 virtual ble_error_t startAdvertising(const GapAdvertisingParams &) = 0;
rgrover1 260:ea7f9f14cc15 90 virtual ble_error_t stopAdvertising(void) = 0;
rgrover1 325:501ad8b8bbe5 91 virtual uint16_t getMinAdvertisingInterval(void) const = 0;
rgrover1 325:501ad8b8bbe5 92 virtual uint16_t getMinNonConnectableAdvertisingInterval(void) const = 0;
rgrover1 325:501ad8b8bbe5 93 virtual uint16_t getMaxAdvertisingInterval(void) const = 0;
rgrover1 260:ea7f9f14cc15 94 virtual ble_error_t disconnect(DisconnectionReason_t reason) = 0;
rgrover1 260:ea7f9f14cc15 95 virtual ble_error_t getPreferredConnectionParams(ConnectionParams_t *params) = 0;
rgrover1 260:ea7f9f14cc15 96 virtual ble_error_t setPreferredConnectionParams(const ConnectionParams_t *params) = 0;
rgrover1 260:ea7f9f14cc15 97 virtual ble_error_t updateConnectionParams(Handle_t handle, const ConnectionParams_t *params) = 0;
rgrover1 260:ea7f9f14cc15 98
rgrover1 260:ea7f9f14cc15 99 virtual ble_error_t setDeviceName(const uint8_t *deviceName) = 0;
rgrover1 260:ea7f9f14cc15 100 virtual ble_error_t getDeviceName(uint8_t *deviceName, unsigned *lengthP) = 0;
rgrover1 260:ea7f9f14cc15 101 virtual ble_error_t setAppearance(uint16_t appearance) = 0;
rgrover1 260:ea7f9f14cc15 102 virtual ble_error_t getAppearance(uint16_t *appearanceP) = 0;
rgrover1 260:ea7f9f14cc15 103
rgrover1 337:e7c2eb38f5cc 104 protected:
rgrover1 260:ea7f9f14cc15 105 /* Event callback handlers */
rgrover1 260:ea7f9f14cc15 106 void setOnTimeout(EventCallback_t callback) {onTimeout = callback;}
rgrover1 260:ea7f9f14cc15 107 void setOnConnection(ConnectionEventCallback_t callback) {onConnection = callback;}
rgrover1 260:ea7f9f14cc15 108
rgrover1 260:ea7f9f14cc15 109 /**
rgrover1 260:ea7f9f14cc15 110 * Set the application callback for disconnection events.
rgrover1 260:ea7f9f14cc15 111 * @param callback
rgrover1 260:ea7f9f14cc15 112 * Pointer to the unique callback.
rgrover1 260:ea7f9f14cc15 113 */
rgrover1 260:ea7f9f14cc15 114 void setOnDisconnection(DisconnectionEventCallback_t callback) {onDisconnection = callback;}
rgrover1 260:ea7f9f14cc15 115
rgrover1 260:ea7f9f14cc15 116 /**
rgrover1 260:ea7f9f14cc15 117 * Append to a chain of callbacks to be invoked upon disconnection; these
rgrover1 260:ea7f9f14cc15 118 * callbacks receive no context and are therefore different from the
rgrover1 260:ea7f9f14cc15 119 * onDisconnection callback.
rgrover1 260:ea7f9f14cc15 120 * @param callback
rgrover1 260:ea7f9f14cc15 121 * function pointer to be invoked upon disconnection; receives no context.
rgrover1 260:ea7f9f14cc15 122 *
rgrover1 260:ea7f9f14cc15 123 * @note the disconnection CallChain should have been merged with
rgrover1 260:ea7f9f14cc15 124 * onDisconnctionCallback; but this was not possible because
rgrover1 260:ea7f9f14cc15 125 * FunctionPointer (which is a building block for CallChain) doesn't
rgrover1 260:ea7f9f14cc15 126 * accept variadic templates.
rgrover1 260:ea7f9f14cc15 127 */
rgrover1 260:ea7f9f14cc15 128 template<typename T>
rgrover1 260:ea7f9f14cc15 129 void addToDisconnectionCallChain(T *tptr, void (T::*mptr)(void)) {disconnectionCallChain.add(tptr, mptr);}
rgrover1 260:ea7f9f14cc15 130
rgrover1 337:e7c2eb38f5cc 131 private:
rgrover1 260:ea7f9f14cc15 132 GapState_t getState(void) const {
rgrover1 260:ea7f9f14cc15 133 return state;
rgrover1 260:ea7f9f14cc15 134 }
rgrover1 260:ea7f9f14cc15 135
rgrover1 260:ea7f9f14cc15 136 protected:
rgrover1 260:ea7f9f14cc15 137 /* Default constructor. */
rgrover1 260:ea7f9f14cc15 138 Gap() : state(), onTimeout(NULL), onConnection(NULL), onDisconnection(NULL), disconnectionCallChain() {
rgrover1 260:ea7f9f14cc15 139 /* empty */
rgrover1 260:ea7f9f14cc15 140 }
rgrover1 260:ea7f9f14cc15 141
rgrover1 260:ea7f9f14cc15 142 public:
rgrover1 260:ea7f9f14cc15 143 void processConnectionEvent(Handle_t handle, addr_type_t type, const address_t addr, const ConnectionParams_t *params) {
rgrover1 260:ea7f9f14cc15 144 state.connected = 1;
rgrover1 260:ea7f9f14cc15 145 if (onConnection) {
rgrover1 260:ea7f9f14cc15 146 onConnection(handle, type, addr, params);
rgrover1 260:ea7f9f14cc15 147 }
rgrover1 260:ea7f9f14cc15 148 }
rgrover1 260:ea7f9f14cc15 149
rgrover1 260:ea7f9f14cc15 150 void processDisconnectionEvent(Handle_t handle, DisconnectionReason_t reason) {
rgrover1 260:ea7f9f14cc15 151 state.connected = 0;
rgrover1 260:ea7f9f14cc15 152 if (onDisconnection) {
rgrover1 260:ea7f9f14cc15 153 onDisconnection(handle, reason);
rgrover1 260:ea7f9f14cc15 154 }
rgrover1 260:ea7f9f14cc15 155 disconnectionCallChain.call();
rgrover1 260:ea7f9f14cc15 156 }
rgrover1 260:ea7f9f14cc15 157
rgrover1 260:ea7f9f14cc15 158 void processEvent(GapEvents::gapEvent_e type) {
rgrover1 260:ea7f9f14cc15 159 switch (type) {
rgrover1 260:ea7f9f14cc15 160 case GapEvents::GAP_EVENT_TIMEOUT:
rgrover1 260:ea7f9f14cc15 161 state.advertising = 0;
rgrover1 260:ea7f9f14cc15 162 if (onTimeout) {
rgrover1 260:ea7f9f14cc15 163 onTimeout();
rgrover1 260:ea7f9f14cc15 164 }
rgrover1 260:ea7f9f14cc15 165 break;
rgrover1 267:ad6f6f40eb24 166 default:
rgrover1 267:ad6f6f40eb24 167 break;
rgrover1 260:ea7f9f14cc15 168 }
rgrover1 260:ea7f9f14cc15 169 }
rgrover1 260:ea7f9f14cc15 170
rgrover1 260:ea7f9f14cc15 171 protected:
rgrover1 260:ea7f9f14cc15 172 GapState_t state;
rgrover1 260:ea7f9f14cc15 173
rgrover1 337:e7c2eb38f5cc 174 protected:
rgrover1 260:ea7f9f14cc15 175 EventCallback_t onTimeout;
rgrover1 260:ea7f9f14cc15 176 ConnectionEventCallback_t onConnection;
rgrover1 260:ea7f9f14cc15 177 DisconnectionEventCallback_t onDisconnection;
rgrover1 260:ea7f9f14cc15 178 CallChain disconnectionCallChain;
rgrover1 260:ea7f9f14cc15 179
rgrover1 260:ea7f9f14cc15 180 private:
rgrover1 260:ea7f9f14cc15 181 /* disallow copy and assignment */
rgrover1 260:ea7f9f14cc15 182 Gap(const Gap &);
rgrover1 260:ea7f9f14cc15 183 Gap& operator=(const Gap &);
rgrover1 260:ea7f9f14cc15 184 };
rgrover1 260:ea7f9f14cc15 185
rgrover1 260:ea7f9f14cc15 186 #endif // ifndef __GAP_H__