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@244:aa639ef2f290, 2014-12-11 (annotated)

Committer:
rgrover1
Date:
Thu Dec 11 11:52:32 2014 +0000
Revision:
244:aa639ef2f290
Parent:
146:543877bb1f52
Child:
260:ea7f9f14cc15
Synchronized with git rev 709abe6a

Author: Rohit Grover

add BLEDevice::addToDisconnectionCallChain()

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Rohit Grover 106:a20be740075d 1 /* mbed Microcontroller Library
Rohit Grover 106:a20be740075d 2 * Copyright (c) 2006-2013 ARM Limited
Rohit Grover 106:a20be740075d 3 *
Rohit Grover 106:a20be740075d 4 * Licensed under the Apache License, Version 2.0 (the "License");
Rohit Grover 106:a20be740075d 5 * you may not use this file except in compliance with the License.
Rohit Grover 106:a20be740075d 6 * You may obtain a copy of the License at
Rohit Grover 106:a20be740075d 7 *
Rohit Grover 106:a20be740075d 8 * http://www.apache.org/licenses/LICENSE-2.0
Rohit Grover 106:a20be740075d 9 *
Rohit Grover 106:a20be740075d 10 * Unless required by applicable law or agreed to in writing, software
Rohit Grover 106:a20be740075d 11 * distributed under the License is distributed on an "AS IS" BASIS,
Rohit Grover 106:a20be740075d 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Rohit Grover 106:a20be740075d 13 * See the License for the specific language governing permissions and
Rohit Grover 106:a20be740075d 14 * limitations under the License.
Rohit Grover 106:a20be740075d 15 */
Rohit Grover 106:a20be740075d 16
Rohit Grover 106:a20be740075d 17 #ifndef __GAP_H__
Rohit Grover 106:a20be740075d 18 #define __GAP_H__
Rohit Grover 106:a20be740075d 19
Rohit Grover 106:a20be740075d 20 #include "GapAdvertisingData.h"
Rohit Grover 106:a20be740075d 21 #include "GapAdvertisingParams.h"
Rohit Grover 106:a20be740075d 22 #include "GapEvents.h"
rgrover1 244:aa639ef2f290 23 #include "CallChain.h"
rgrover1 244:aa639ef2f290 24
rgrover1 244:aa639ef2f290 25 using namespace mbed;
Rohit Grover 106:a20be740075d 26
rgrover1 143:8bdf577b1598 27 class Gap {
Rohit Grover 106:a20be740075d 28 public:
Rohit Grover 106:a20be740075d 29 typedef enum addr_type_e {
Rohit Grover 106:a20be740075d 30 ADDR_TYPE_PUBLIC = 0,
Rohit Grover 106:a20be740075d 31 ADDR_TYPE_RANDOM_STATIC,
Rohit Grover 106:a20be740075d 32 ADDR_TYPE_RANDOM_PRIVATE_RESOLVABLE,
Rohit Grover 106:a20be740075d 33 ADDR_TYPE_RANDOM_PRIVATE_NON_RESOLVABLE
Rohit Grover 106:a20be740075d 34 } addr_type_t;
Rohit Grover 106:a20be740075d 35
Rohit Grover 123:fede41ce9407 36 static const unsigned ADDR_LEN = 6;
rgrover1 140:407d134c179d 37 typedef uint8_t address_t[ADDR_LEN];
Rohit Grover 123:fede41ce9407 38
Rohit Grover 117:0fb20195102b 39 /**
rgrover1 143:8bdf577b1598 40 * Enumeration for disconnection reasons. The values for these reasons are
Rohit Grover 117:0fb20195102b 41 * derived from Nordic's implementation; but the reasons are meant to be
Rohit Grover 117:0fb20195102b 42 * independent of the transport. If you are returned a reason which is not
Rohit Grover 117:0fb20195102b 43 * covered by this enumeration, then please refer to the underlying
Rohit Grover 117:0fb20195102b 44 * transport library.
Rohit Grover 117:0fb20195102b 45 */
Rohit Grover 116:ca826083980e 46 enum DisconnectionReason_t {
Rohit Grover 117:0fb20195102b 47 REMOTE_USER_TERMINATED_CONNECTION = 0x13,
Rohit Grover 117:0fb20195102b 48 LOCAL_HOST_TERMINATED_CONNECTION = 0x16,
Rohit Grover 117:0fb20195102b 49 CONN_INTERVAL_UNACCEPTABLE = 0x3B,
Rohit Grover 116:ca826083980e 50 };
Rohit Grover 116:ca826083980e 51
Rohit Grover 106:a20be740075d 52 /* Describes the current state of the device (more than one bit can be set) */
Rohit Grover 106:a20be740075d 53 typedef struct GapState_s {
Rohit Grover 106:a20be740075d 54 unsigned advertising : 1; /**< peripheral is currently advertising */
Rohit Grover 106:a20be740075d 55 unsigned connected : 1; /**< peripheral is connected to a central */
Rohit Grover 106:a20be740075d 56 } GapState_t;
Rohit Grover 106:a20be740075d 57
Rohit Grover 106:a20be740075d 58 typedef uint16_t Handle_t;
Rohit Grover 106:a20be740075d 59
Rohit Grover 106:a20be740075d 60 typedef struct {
rgrover1 140:407d134c179d 61 uint16_t minConnectionInterval; /**< Minimum Connection Interval in 1.25 ms units, see @ref BLE_GAP_CP_LIMITS.*/
rgrover1 140:407d134c179d 62 uint16_t maxConnectionInterval; /**< Maximum Connection Interval in 1.25 ms units, see @ref BLE_GAP_CP_LIMITS.*/
rgrover1 140:407d134c179d 63 uint16_t slaveLatency; /**< Slave Latency in number of connection events, see @ref BLE_GAP_CP_LIMITS.*/
rgrover1 140:407d134c179d 64 uint16_t connectionSupervisionTimeout; /**< Connection Supervision Timeout in 10 ms units, see @ref BLE_GAP_CP_LIMITS.*/
Rohit Grover 106:a20be740075d 65 } ConnectionParams_t;
Rohit Grover 106:a20be740075d 66
rgrover1 146:543877bb1f52 67 static const uint16_t UNIT_1_25_MS = 1250; /**< Number of microseconds in 1.25 milliseconds. */
rgrover1 146:543877bb1f52 68 static const uint16_t UNIT_0_625_MS = 650; /**< Number of microseconds in 0.625 milliseconds. */
rgrover1 140:407d134c179d 69 static uint16_t MSEC_TO_GAP_DURATION_UNITS(uint32_t durationInMillis) {
rgrover1 140:407d134c179d 70 return (durationInMillis * 1000) / UNIT_1_25_MS;
rgrover1 140:407d134c179d 71 }
rgrover1 146:543877bb1f52 72 static uint16_t MSEC_TO_ADVERTISEMENT_DURATION_UNITS(uint32_t durationInMillis) {
rgrover1 146:543877bb1f52 73 return (durationInMillis * 1000) / UNIT_0_625_MS;
rgrover1 146:543877bb1f52 74 }
rgrover1 140:407d134c179d 75
rgrover1 142:42f038a81ea7 76 typedef void (*EventCallback_t)(void);
rgrover1 142:42f038a81ea7 77 typedef void (*ConnectionEventCallback_t)(Handle_t, addr_type_t peerAddrType, const address_t peerAddr, const ConnectionParams_t *);
rgrover1 142:42f038a81ea7 78 typedef void (*DisconnectionEventCallback_t)(Handle_t, DisconnectionReason_t);
rgrover1 142:42f038a81ea7 79
rgrover1 142:42f038a81ea7 80 friend class BLEDevice;
rgrover1 142:42f038a81ea7 81 private:
Rohit Grover 106:a20be740075d 82 /* These functions must be defined in the sub-class */
rgrover1 140:407d134c179d 83 virtual ble_error_t setAddress(addr_type_t type, const address_t address) = 0;
rgrover1 140:407d134c179d 84 virtual ble_error_t getAddress(addr_type_t *typeP, address_t address) = 0;
Rohit Grover 106:a20be740075d 85 virtual ble_error_t setAdvertisingData(const GapAdvertisingData &, const GapAdvertisingData &) = 0;
rgrover1 140:407d134c179d 86 virtual ble_error_t startAdvertising(const GapAdvertisingParams &) = 0;
rgrover1 140:407d134c179d 87 virtual ble_error_t stopAdvertising(void) = 0;
rgrover1 140:407d134c179d 88 virtual ble_error_t disconnect(DisconnectionReason_t reason) = 0;
rgrover1 140:407d134c179d 89 virtual ble_error_t getPreferredConnectionParams(ConnectionParams_t *params) = 0;
rgrover1 140:407d134c179d 90 virtual ble_error_t setPreferredConnectionParams(const ConnectionParams_t *params) = 0;
rgrover1 140:407d134c179d 91 virtual ble_error_t updateConnectionParams(Handle_t handle, const ConnectionParams_t *params) = 0;
Rohit Grover 106:a20be740075d 92
rgrover1 140:407d134c179d 93 virtual ble_error_t setDeviceName(const uint8_t *deviceName) = 0;
Rohit Grover 116:ca826083980e 94 virtual ble_error_t getDeviceName(uint8_t *deviceName, unsigned *lengthP) = 0;
rgrover1 140:407d134c179d 95 virtual ble_error_t setAppearance(uint16_t appearance) = 0;
rgrover1 140:407d134c179d 96 virtual ble_error_t getAppearance(uint16_t *appearanceP) = 0;
Rohit Grover 116:ca826083980e 97
rgrover1 142:42f038a81ea7 98 private:
rgrover1 142:42f038a81ea7 99 /* Event callback handlers */
rgrover1 142:42f038a81ea7 100 void setOnTimeout(EventCallback_t callback) {onTimeout = callback;}
rgrover1 142:42f038a81ea7 101 void setOnConnection(ConnectionEventCallback_t callback) {onConnection = callback;}
rgrover1 244:aa639ef2f290 102
rgrover1 244:aa639ef2f290 103 /**
rgrover1 244:aa639ef2f290 104 * Set the application callback for disconnection events.
rgrover1 244:aa639ef2f290 105 * @param callback
rgrover1 244:aa639ef2f290 106 * Pointer to the unique callback.
rgrover1 244:aa639ef2f290 107 */
rgrover1 142:42f038a81ea7 108 void setOnDisconnection(DisconnectionEventCallback_t callback) {onDisconnection = callback;}
Rohit Grover 106:a20be740075d 109
rgrover1 244:aa639ef2f290 110 /**
rgrover1 244:aa639ef2f290 111 * Append to a chain of callbacks to be invoked upon disconnection; these
rgrover1 244:aa639ef2f290 112 * callbacks receive no context and are therefore different from the
rgrover1 244:aa639ef2f290 113 * onDisconnection callback.
rgrover1 244:aa639ef2f290 114 * @param callback
rgrover1 244:aa639ef2f290 115 * function pointer to be invoked upon disconnection; receives no context.
rgrover1 244:aa639ef2f290 116 *
rgrover1 244:aa639ef2f290 117 * @note the disconnection CallChain should have been merged with
rgrover1 244:aa639ef2f290 118 * onDisconnctionCallback; but this was not possible because
rgrover1 244:aa639ef2f290 119 * FunctionPointer (which is a building block for CallChain) doesn't
rgrover1 244:aa639ef2f290 120 * accept variadic templates.
rgrover1 244:aa639ef2f290 121 */
rgrover1 244:aa639ef2f290 122 template<typename T>
rgrover1 244:aa639ef2f290 123 void addToDisconnectionCallChain(T *tptr, void (T::*mptr)(void)) {disconnectionCallChain.add(tptr, mptr);}
rgrover1 244:aa639ef2f290 124
rgrover1 142:42f038a81ea7 125 GapState_t getState(void) const {
rgrover1 142:42f038a81ea7 126 return state;
Rohit Grover 106:a20be740075d 127 }
rgrover1 140:407d134c179d 128
rgrover1 142:42f038a81ea7 129 protected:
rgrover1 244:aa639ef2f290 130 /* Default constructor. */
rgrover1 244:aa639ef2f290 131 Gap() : state(), onTimeout(NULL), onConnection(NULL), onDisconnection(NULL), disconnectionCallChain() {
rgrover1 142:42f038a81ea7 132 /* empty */
Rohit Grover 106:a20be740075d 133 }
rgrover1 140:407d134c179d 134
rgrover1 142:42f038a81ea7 135 public:
rgrover1 140:407d134c179d 136 void processConnectionEvent(Handle_t handle, addr_type_t type, const address_t addr, const ConnectionParams_t *params) {
Rohit Grover 116:ca826083980e 137 state.connected = 1;
Rohit Grover 116:ca826083980e 138 if (onConnection) {
rgrover1 140:407d134c179d 139 onConnection(handle, type, addr, params);
Rohit Grover 116:ca826083980e 140 }
Rohit Grover 116:ca826083980e 141 }
Rohit Grover 116:ca826083980e 142
Rohit Grover 116:ca826083980e 143 void processDisconnectionEvent(Handle_t handle, DisconnectionReason_t reason) {
Rohit Grover 116:ca826083980e 144 state.connected = 0;
Rohit Grover 116:ca826083980e 145 if (onDisconnection) {
Rohit Grover 116:ca826083980e 146 onDisconnection(handle, reason);
Rohit Grover 106:a20be740075d 147 }
rgrover1 244:aa639ef2f290 148 disconnectionCallChain.call();
Rohit Grover 106:a20be740075d 149 }
Rohit Grover 106:a20be740075d 150
Rohit Grover 106:a20be740075d 151 void processEvent(GapEvents::gapEvent_e type) {
Rohit Grover 106:a20be740075d 152 switch (type) {
Rohit Grover 106:a20be740075d 153 case GapEvents::GAP_EVENT_TIMEOUT:
Rohit Grover 106:a20be740075d 154 state.advertising = 0;
Rohit Grover 106:a20be740075d 155 if (onTimeout) {
Rohit Grover 106:a20be740075d 156 onTimeout();
Rohit Grover 106:a20be740075d 157 }
Rohit Grover 106:a20be740075d 158 break;
Rohit Grover 106:a20be740075d 159 }
Rohit Grover 106:a20be740075d 160 }
Rohit Grover 106:a20be740075d 161
Rohit Grover 106:a20be740075d 162 protected:
rgrover1 140:407d134c179d 163 GapState_t state;
Rohit Grover 106:a20be740075d 164
Rohit Grover 106:a20be740075d 165 private:
Rohit Grover 116:ca826083980e 166 EventCallback_t onTimeout;
Rohit Grover 116:ca826083980e 167 ConnectionEventCallback_t onConnection;
Rohit Grover 116:ca826083980e 168 DisconnectionEventCallback_t onDisconnection;
rgrover1 244:aa639ef2f290 169 CallChain disconnectionCallChain;
rgrover1 142:42f038a81ea7 170
rgrover1 142:42f038a81ea7 171 private:
rgrover1 143:8bdf577b1598 172 /* disallow copy and assignment */
rgrover1 142:42f038a81ea7 173 Gap(const Gap &);
rgrover1 142:42f038a81ea7 174 Gap& operator=(const Gap &);
Rohit Grover 106:a20be740075d 175 };
Rohit Grover 106:a20be740075d 176
rgrover1 126:fdebe4d5d62f 177 #endif // ifndef __GAP_H__