Kris Scholte Lubberink
/
bleswitcher
test
source/main.cpp@0:fcb1e0b995a9, 2018-03-08 (annotated)
- Committer:
- paulszczepanek
- Date:
- Thu Mar 08 18:08:23 2018 +0000
- Revision:
- 0:fcb1e0b995a9
- Child:
- 1:916188eae2bb
initial commit
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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paulszczepanek | 0:fcb1e0b995a9 | 1 | /* mbed Microcontroller Library |
paulszczepanek | 0:fcb1e0b995a9 | 2 | * Copyright (c) 2006-2013 ARM Limited |
paulszczepanek | 0:fcb1e0b995a9 | 3 | * |
paulszczepanek | 0:fcb1e0b995a9 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
paulszczepanek | 0:fcb1e0b995a9 | 5 | * you may not use this file except in compliance with the License. |
paulszczepanek | 0:fcb1e0b995a9 | 6 | * You may obtain a copy of the License at |
paulszczepanek | 0:fcb1e0b995a9 | 7 | * |
paulszczepanek | 0:fcb1e0b995a9 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
paulszczepanek | 0:fcb1e0b995a9 | 9 | * |
paulszczepanek | 0:fcb1e0b995a9 | 10 | * Unless required by applicable law or agreed to in writing, software |
paulszczepanek | 0:fcb1e0b995a9 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
paulszczepanek | 0:fcb1e0b995a9 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
paulszczepanek | 0:fcb1e0b995a9 | 13 | * See the License for the specific language governing permissions and |
paulszczepanek | 0:fcb1e0b995a9 | 14 | * limitations under the License. |
paulszczepanek | 0:fcb1e0b995a9 | 15 | */ |
paulszczepanek | 0:fcb1e0b995a9 | 16 | |
paulszczepanek | 0:fcb1e0b995a9 | 17 | #include <events/mbed_events.h> |
paulszczepanek | 0:fcb1e0b995a9 | 18 | #include <mbed.h> |
paulszczepanek | 0:fcb1e0b995a9 | 19 | #include "ble/BLE.h" |
paulszczepanek | 0:fcb1e0b995a9 | 20 | #include "SecurityManager.h" |
paulszczepanek | 0:fcb1e0b995a9 | 21 | |
paulszczepanek | 0:fcb1e0b995a9 | 22 | /** This example demonstrates all the basic setup required |
paulszczepanek | 0:fcb1e0b995a9 | 23 | * for pairing and setting up link security both as a central and peripheral |
paulszczepanek | 0:fcb1e0b995a9 | 24 | * |
paulszczepanek | 0:fcb1e0b995a9 | 25 | * The example is implemented as two classes, one for the peripheral and one |
paulszczepanek | 0:fcb1e0b995a9 | 26 | * for central inheriting from a common base. They are run in sequence and |
paulszczepanek | 0:fcb1e0b995a9 | 27 | * require a peer device to connect to. During the peripheral device demonstration |
paulszczepanek | 0:fcb1e0b995a9 | 28 | * a peer device is required to connect. In the central device demonstration |
paulszczepanek | 0:fcb1e0b995a9 | 29 | * this peer device will be scanned for and connected to - therefore it should |
paulszczepanek | 0:fcb1e0b995a9 | 30 | * be advertising with the same address as when it connected. |
paulszczepanek | 0:fcb1e0b995a9 | 31 | * |
paulszczepanek | 0:fcb1e0b995a9 | 32 | * During the test output is written on the serial connection to monitor its |
paulszczepanek | 0:fcb1e0b995a9 | 33 | * progress. |
paulszczepanek | 0:fcb1e0b995a9 | 34 | */ |
paulszczepanek | 0:fcb1e0b995a9 | 35 | |
paulszczepanek | 0:fcb1e0b995a9 | 36 | static const uint8_t DEVICE_NAME[] = "SM_device"; |
paulszczepanek | 0:fcb1e0b995a9 | 37 | |
paulszczepanek | 0:fcb1e0b995a9 | 38 | /* for demonstration purposes we will store the peer device address |
paulszczepanek | 0:fcb1e0b995a9 | 39 | * of the device that connects to us in the first demonstration |
paulszczepanek | 0:fcb1e0b995a9 | 40 | * so we can use its address to reconnect to it later */ |
paulszczepanek | 0:fcb1e0b995a9 | 41 | static BLEProtocol::AddressBytes_t peer_address; |
paulszczepanek | 0:fcb1e0b995a9 | 42 | |
paulszczepanek | 0:fcb1e0b995a9 | 43 | /** Base class for both peripheral and central. The same class that provides |
paulszczepanek | 0:fcb1e0b995a9 | 44 | * the logic for the application also implements the SecurityManagerEventHandler |
paulszczepanek | 0:fcb1e0b995a9 | 45 | * which is the interface used by the Security Manager to communicate events |
paulszczepanek | 0:fcb1e0b995a9 | 46 | * back to the applications. You can provide overrides for a selection of events |
paulszczepanek | 0:fcb1e0b995a9 | 47 | * your application is interested in. |
paulszczepanek | 0:fcb1e0b995a9 | 48 | */ |
paulszczepanek | 0:fcb1e0b995a9 | 49 | class SMDevice : private mbed::NonCopyable<SMDevice>, |
paulszczepanek | 0:fcb1e0b995a9 | 50 | public SecurityManager::EventHandler |
paulszczepanek | 0:fcb1e0b995a9 | 51 | { |
paulszczepanek | 0:fcb1e0b995a9 | 52 | public: |
paulszczepanek | 0:fcb1e0b995a9 | 53 | SMDevice(BLE &ble, events::EventQueue &event_queue, BLEProtocol::AddressBytes_t &peer_address) : |
paulszczepanek | 0:fcb1e0b995a9 | 54 | _led1(LED1, 0), |
paulszczepanek | 0:fcb1e0b995a9 | 55 | _ble(ble), |
paulszczepanek | 0:fcb1e0b995a9 | 56 | _event_queue(event_queue), |
paulszczepanek | 0:fcb1e0b995a9 | 57 | _peer_address(peer_address), |
paulszczepanek | 0:fcb1e0b995a9 | 58 | _handle(0), |
paulszczepanek | 0:fcb1e0b995a9 | 59 | _is_connecting(false) { }; |
paulszczepanek | 0:fcb1e0b995a9 | 60 | |
paulszczepanek | 0:fcb1e0b995a9 | 61 | virtual ~SMDevice() |
paulszczepanek | 0:fcb1e0b995a9 | 62 | { |
paulszczepanek | 0:fcb1e0b995a9 | 63 | if (_ble.hasInitialized()) { |
paulszczepanek | 0:fcb1e0b995a9 | 64 | _ble.shutdown(); |
paulszczepanek | 0:fcb1e0b995a9 | 65 | } |
paulszczepanek | 0:fcb1e0b995a9 | 66 | }; |
paulszczepanek | 0:fcb1e0b995a9 | 67 | |
paulszczepanek | 0:fcb1e0b995a9 | 68 | /** Start BLE interface initialisation */ |
paulszczepanek | 0:fcb1e0b995a9 | 69 | void run() |
paulszczepanek | 0:fcb1e0b995a9 | 70 | { |
paulszczepanek | 0:fcb1e0b995a9 | 71 | ble_error_t error; |
paulszczepanek | 0:fcb1e0b995a9 | 72 | |
paulszczepanek | 0:fcb1e0b995a9 | 73 | /* to show we're running we'll blink every 500ms */ |
paulszczepanek | 0:fcb1e0b995a9 | 74 | _event_queue.call_every(500, this, &SMDevice::blink); |
paulszczepanek | 0:fcb1e0b995a9 | 75 | |
paulszczepanek | 0:fcb1e0b995a9 | 76 | if (_ble.hasInitialized()) { |
paulszczepanek | 0:fcb1e0b995a9 | 77 | printf("Ble instance already initialised.\r\n"); |
paulszczepanek | 0:fcb1e0b995a9 | 78 | return; |
paulszczepanek | 0:fcb1e0b995a9 | 79 | } |
paulszczepanek | 0:fcb1e0b995a9 | 80 | |
paulszczepanek | 0:fcb1e0b995a9 | 81 | /* this will inform us off all events so we can schedule their handling |
paulszczepanek | 0:fcb1e0b995a9 | 82 | * using our event queue */ |
paulszczepanek | 0:fcb1e0b995a9 | 83 | _ble.onEventsToProcess( |
paulszczepanek | 0:fcb1e0b995a9 | 84 | makeFunctionPointer(this, &SMDevice::schedule_ble_events) |
paulszczepanek | 0:fcb1e0b995a9 | 85 | ); |
paulszczepanek | 0:fcb1e0b995a9 | 86 | |
paulszczepanek | 0:fcb1e0b995a9 | 87 | /* handle timeouts, for example when connection attempts fail */ |
paulszczepanek | 0:fcb1e0b995a9 | 88 | _ble.gap().onTimeout( |
paulszczepanek | 0:fcb1e0b995a9 | 89 | makeFunctionPointer(this, &SMDevice::on_timeout) |
paulszczepanek | 0:fcb1e0b995a9 | 90 | ); |
paulszczepanek | 0:fcb1e0b995a9 | 91 | |
paulszczepanek | 0:fcb1e0b995a9 | 92 | error = _ble.init(this, &SMDevice::on_init_complete); |
paulszczepanek | 0:fcb1e0b995a9 | 93 | |
paulszczepanek | 0:fcb1e0b995a9 | 94 | if (error) { |
paulszczepanek | 0:fcb1e0b995a9 | 95 | printf("Error returned by BLE::init.\r\n"); |
paulszczepanek | 0:fcb1e0b995a9 | 96 | return; |
paulszczepanek | 0:fcb1e0b995a9 | 97 | } |
paulszczepanek | 0:fcb1e0b995a9 | 98 | |
paulszczepanek | 0:fcb1e0b995a9 | 99 | /* this will not return until shutdown */ |
paulszczepanek | 0:fcb1e0b995a9 | 100 | _event_queue.dispatch_forever(); |
paulszczepanek | 0:fcb1e0b995a9 | 101 | }; |
paulszczepanek | 0:fcb1e0b995a9 | 102 | |
paulszczepanek | 0:fcb1e0b995a9 | 103 | /* event handler functions */ |
paulszczepanek | 0:fcb1e0b995a9 | 104 | |
paulszczepanek | 0:fcb1e0b995a9 | 105 | /** Respond to a pairing request. This will be called by the stack |
paulszczepanek | 0:fcb1e0b995a9 | 106 | * when a pairing request arrives and expects the application to |
paulszczepanek | 0:fcb1e0b995a9 | 107 | * call acceptPairingRequest or cancelPairingRequest */ |
paulszczepanek | 0:fcb1e0b995a9 | 108 | virtual void pairingRequest( |
paulszczepanek | 0:fcb1e0b995a9 | 109 | ble::connection_handle_t connectionHandle |
paulszczepanek | 0:fcb1e0b995a9 | 110 | ) { |
paulszczepanek | 0:fcb1e0b995a9 | 111 | printf("Pairing requested. Authorising.\r\n"); |
paulszczepanek | 0:fcb1e0b995a9 | 112 | _ble.securityManager().acceptPairingRequest(connectionHandle); |
paulszczepanek | 0:fcb1e0b995a9 | 113 | } |
paulszczepanek | 0:fcb1e0b995a9 | 114 | |
paulszczepanek | 0:fcb1e0b995a9 | 115 | /** Inform the application of a successful pairing. Terminate the demonstration. */ |
paulszczepanek | 0:fcb1e0b995a9 | 116 | virtual void pairingResult( |
paulszczepanek | 0:fcb1e0b995a9 | 117 | ble::connection_handle_t connectionHandle, |
paulszczepanek | 0:fcb1e0b995a9 | 118 | SecurityManager::SecurityCompletionStatus_t result |
paulszczepanek | 0:fcb1e0b995a9 | 119 | ) { |
paulszczepanek | 0:fcb1e0b995a9 | 120 | if (result == SecurityManager::SEC_STATUS_SUCCESS) { |
paulszczepanek | 0:fcb1e0b995a9 | 121 | printf("Pairing successful\r\n"); |
paulszczepanek | 0:fcb1e0b995a9 | 122 | } else { |
paulszczepanek | 0:fcb1e0b995a9 | 123 | printf("Pairing failed\r\n"); |
paulszczepanek | 0:fcb1e0b995a9 | 124 | } |
paulszczepanek | 0:fcb1e0b995a9 | 125 | |
paulszczepanek | 0:fcb1e0b995a9 | 126 | /* disconnect in 500 ms */ |
paulszczepanek | 0:fcb1e0b995a9 | 127 | _event_queue.call_in( |
paulszczepanek | 0:fcb1e0b995a9 | 128 | 500, &_ble.gap(), |
paulszczepanek | 0:fcb1e0b995a9 | 129 | &Gap::disconnect, _handle, Gap::REMOTE_USER_TERMINATED_CONNECTION |
paulszczepanek | 0:fcb1e0b995a9 | 130 | ); |
paulszczepanek | 0:fcb1e0b995a9 | 131 | } |
paulszczepanek | 0:fcb1e0b995a9 | 132 | |
paulszczepanek | 0:fcb1e0b995a9 | 133 | /** Inform the application of change in encryption status. This will be |
paulszczepanek | 0:fcb1e0b995a9 | 134 | * communicated through the serial port */ |
paulszczepanek | 0:fcb1e0b995a9 | 135 | virtual void linkEncryptionResult( |
paulszczepanek | 0:fcb1e0b995a9 | 136 | ble::connection_handle_t connectionHandle, |
paulszczepanek | 0:fcb1e0b995a9 | 137 | ble::link_encryption_t result |
paulszczepanek | 0:fcb1e0b995a9 | 138 | ) { |
paulszczepanek | 0:fcb1e0b995a9 | 139 | if (result == ble::link_encryption_t::ENCRYPTED) { |
paulszczepanek | 0:fcb1e0b995a9 | 140 | printf("Link ENCRYPTED\r\n"); |
paulszczepanek | 0:fcb1e0b995a9 | 141 | } else if (result == ble::link_encryption_t::ENCRYPTED_WITH_MITM) { |
paulszczepanek | 0:fcb1e0b995a9 | 142 | printf("Link ENCRYPTED_WITH_MITM\r\n"); |
paulszczepanek | 0:fcb1e0b995a9 | 143 | } else if (result == ble::link_encryption_t::NOT_ENCRYPTED) { |
paulszczepanek | 0:fcb1e0b995a9 | 144 | printf("Link NOT_ENCRYPTED\r\n"); |
paulszczepanek | 0:fcb1e0b995a9 | 145 | } |
paulszczepanek | 0:fcb1e0b995a9 | 146 | } |
paulszczepanek | 0:fcb1e0b995a9 | 147 | |
paulszczepanek | 0:fcb1e0b995a9 | 148 | private: |
paulszczepanek | 0:fcb1e0b995a9 | 149 | /** Override to start chosen activity when initialisation completes */ |
paulszczepanek | 0:fcb1e0b995a9 | 150 | virtual void start() = 0; |
paulszczepanek | 0:fcb1e0b995a9 | 151 | |
paulszczepanek | 0:fcb1e0b995a9 | 152 | /** This is called when BLE interface is initialised and starts the demonstration */ |
paulszczepanek | 0:fcb1e0b995a9 | 153 | void on_init_complete(BLE::InitializationCompleteCallbackContext *event) |
paulszczepanek | 0:fcb1e0b995a9 | 154 | { |
paulszczepanek | 0:fcb1e0b995a9 | 155 | ble_error_t error; |
paulszczepanek | 0:fcb1e0b995a9 | 156 | |
paulszczepanek | 0:fcb1e0b995a9 | 157 | if (event->error) { |
paulszczepanek | 0:fcb1e0b995a9 | 158 | printf("Error during the initialisation\r\n"); |
paulszczepanek | 0:fcb1e0b995a9 | 159 | return; |
paulszczepanek | 0:fcb1e0b995a9 | 160 | } |
paulszczepanek | 0:fcb1e0b995a9 | 161 | |
paulszczepanek | 0:fcb1e0b995a9 | 162 | /* If the security manager is required this needs to be called before any |
paulszczepanek | 0:fcb1e0b995a9 | 163 | * calls to the Security manager happen. */ |
paulszczepanek | 0:fcb1e0b995a9 | 164 | error = _ble.securityManager().init(); |
paulszczepanek | 0:fcb1e0b995a9 | 165 | |
paulszczepanek | 0:fcb1e0b995a9 | 166 | if (error) { |
paulszczepanek | 0:fcb1e0b995a9 | 167 | printf("Error during init %d\r\n", error); |
paulszczepanek | 0:fcb1e0b995a9 | 168 | return; |
paulszczepanek | 0:fcb1e0b995a9 | 169 | } |
paulszczepanek | 0:fcb1e0b995a9 | 170 | |
paulszczepanek | 0:fcb1e0b995a9 | 171 | /* Tell the security manager to use methods in this class to inform us |
paulszczepanek | 0:fcb1e0b995a9 | 172 | * of any events. Class needs to implement SecurityManagerEventHandler. */ |
paulszczepanek | 0:fcb1e0b995a9 | 173 | _ble.securityManager().setSecurityManagerEventHandler(this); |
paulszczepanek | 0:fcb1e0b995a9 | 174 | |
paulszczepanek | 0:fcb1e0b995a9 | 175 | /* print device address */ |
paulszczepanek | 0:fcb1e0b995a9 | 176 | Gap::AddressType_t addr_type; |
paulszczepanek | 0:fcb1e0b995a9 | 177 | Gap::Address_t addr; |
paulszczepanek | 0:fcb1e0b995a9 | 178 | _ble.gap().getAddress(&addr_type, addr); |
paulszczepanek | 0:fcb1e0b995a9 | 179 | printf("Device address: %02x:%02x:%02x:%02x:%02x:%02x\r\n", |
paulszczepanek | 0:fcb1e0b995a9 | 180 | addr[5], addr[4], addr[3], addr[2], addr[1], addr[0]); |
paulszczepanek | 0:fcb1e0b995a9 | 181 | |
paulszczepanek | 0:fcb1e0b995a9 | 182 | /* when scanning we want to connect to a peer device so we need to |
paulszczepanek | 0:fcb1e0b995a9 | 183 | * attach callbacks that are used by Gap to notify us of events */ |
paulszczepanek | 0:fcb1e0b995a9 | 184 | _ble.gap().onConnection(this, &SMDevice::on_connect); |
paulszczepanek | 0:fcb1e0b995a9 | 185 | _ble.gap().onDisconnection(this, &SMDevice::on_disconnect); |
paulszczepanek | 0:fcb1e0b995a9 | 186 | |
paulszczepanek | 0:fcb1e0b995a9 | 187 | /* start test in 500 ms */ |
paulszczepanek | 0:fcb1e0b995a9 | 188 | _event_queue.call_in(500, this, &SMDevice::start); |
paulszczepanek | 0:fcb1e0b995a9 | 189 | }; |
paulszczepanek | 0:fcb1e0b995a9 | 190 | |
paulszczepanek | 0:fcb1e0b995a9 | 191 | /** This is called by Gap to notify the application we connected */ |
paulszczepanek | 0:fcb1e0b995a9 | 192 | virtual void on_connect(const Gap::ConnectionCallbackParams_t *connection_event) = 0; |
paulszczepanek | 0:fcb1e0b995a9 | 193 | |
paulszczepanek | 0:fcb1e0b995a9 | 194 | /** This is called by Gap to notify the application we disconnected, |
paulszczepanek | 0:fcb1e0b995a9 | 195 | * in our case it ends the demonstration. */ |
paulszczepanek | 0:fcb1e0b995a9 | 196 | void on_disconnect(const Gap::DisconnectionCallbackParams_t *event) |
paulszczepanek | 0:fcb1e0b995a9 | 197 | { |
paulszczepanek | 0:fcb1e0b995a9 | 198 | printf("Disconnected - demonstration ended \r\n"); |
paulszczepanek | 0:fcb1e0b995a9 | 199 | _event_queue.break_dispatch(); |
paulszczepanek | 0:fcb1e0b995a9 | 200 | }; |
paulszczepanek | 0:fcb1e0b995a9 | 201 | |
paulszczepanek | 0:fcb1e0b995a9 | 202 | /** End demonstration unexpectedly. Called if timeout is reached during advertising, |
paulszczepanek | 0:fcb1e0b995a9 | 203 | * scanning or connection initiation */ |
paulszczepanek | 0:fcb1e0b995a9 | 204 | void on_timeout(const Gap::TimeoutSource_t source) |
paulszczepanek | 0:fcb1e0b995a9 | 205 | { |
paulszczepanek | 0:fcb1e0b995a9 | 206 | printf("Unexpected timeout - aborting \r\n"); |
paulszczepanek | 0:fcb1e0b995a9 | 207 | _event_queue.break_dispatch(); |
paulszczepanek | 0:fcb1e0b995a9 | 208 | }; |
paulszczepanek | 0:fcb1e0b995a9 | 209 | |
paulszczepanek | 0:fcb1e0b995a9 | 210 | /** Schedule processing of events from the BLE in the event queue. */ |
paulszczepanek | 0:fcb1e0b995a9 | 211 | void schedule_ble_events(BLE::OnEventsToProcessCallbackContext *context) |
paulszczepanek | 0:fcb1e0b995a9 | 212 | { |
paulszczepanek | 0:fcb1e0b995a9 | 213 | _event_queue.call(mbed::callback(&context->ble, &BLE::processEvents)); |
paulszczepanek | 0:fcb1e0b995a9 | 214 | }; |
paulszczepanek | 0:fcb1e0b995a9 | 215 | |
paulszczepanek | 0:fcb1e0b995a9 | 216 | /** Blink LED to show we're running */ |
paulszczepanek | 0:fcb1e0b995a9 | 217 | void blink(void) |
paulszczepanek | 0:fcb1e0b995a9 | 218 | { |
paulszczepanek | 0:fcb1e0b995a9 | 219 | _led1 = !_led1; |
paulszczepanek | 0:fcb1e0b995a9 | 220 | }; |
paulszczepanek | 0:fcb1e0b995a9 | 221 | |
paulszczepanek | 0:fcb1e0b995a9 | 222 | private: |
paulszczepanek | 0:fcb1e0b995a9 | 223 | DigitalOut _led1; |
paulszczepanek | 0:fcb1e0b995a9 | 224 | |
paulszczepanek | 0:fcb1e0b995a9 | 225 | protected: |
paulszczepanek | 0:fcb1e0b995a9 | 226 | BLE &_ble; |
paulszczepanek | 0:fcb1e0b995a9 | 227 | events::EventQueue &_event_queue; |
paulszczepanek | 0:fcb1e0b995a9 | 228 | BLEProtocol::AddressBytes_t &_peer_address; |
paulszczepanek | 0:fcb1e0b995a9 | 229 | ble::connection_handle_t _handle; |
paulszczepanek | 0:fcb1e0b995a9 | 230 | bool _is_connecting; |
paulszczepanek | 0:fcb1e0b995a9 | 231 | }; |
paulszczepanek | 0:fcb1e0b995a9 | 232 | |
paulszczepanek | 0:fcb1e0b995a9 | 233 | /** A peripheral device will advertise, accept the connection and request |
paulszczepanek | 0:fcb1e0b995a9 | 234 | * a change in link security. */ |
paulszczepanek | 0:fcb1e0b995a9 | 235 | class SMDevicePeripheral : public SMDevice { |
paulszczepanek | 0:fcb1e0b995a9 | 236 | public: |
paulszczepanek | 0:fcb1e0b995a9 | 237 | SMDevicePeripheral(BLE &ble, events::EventQueue &event_queue, BLEProtocol::AddressBytes_t &peer_address) |
paulszczepanek | 0:fcb1e0b995a9 | 238 | : SMDevice(ble, event_queue, peer_address) { } |
paulszczepanek | 0:fcb1e0b995a9 | 239 | |
paulszczepanek | 0:fcb1e0b995a9 | 240 | virtual void start() |
paulszczepanek | 0:fcb1e0b995a9 | 241 | { |
paulszczepanek | 0:fcb1e0b995a9 | 242 | /* Set up and start advertising */ |
paulszczepanek | 0:fcb1e0b995a9 | 243 | |
paulszczepanek | 0:fcb1e0b995a9 | 244 | ble_error_t error; |
paulszczepanek | 0:fcb1e0b995a9 | 245 | GapAdvertisingData advertising_data; |
paulszczepanek | 0:fcb1e0b995a9 | 246 | |
paulszczepanek | 0:fcb1e0b995a9 | 247 | /* add advertising flags */ |
paulszczepanek | 0:fcb1e0b995a9 | 248 | advertising_data.addFlags(GapAdvertisingData::LE_GENERAL_DISCOVERABLE |
paulszczepanek | 0:fcb1e0b995a9 | 249 | | GapAdvertisingData::BREDR_NOT_SUPPORTED); |
paulszczepanek | 0:fcb1e0b995a9 | 250 | |
paulszczepanek | 0:fcb1e0b995a9 | 251 | /* add device name */ |
paulszczepanek | 0:fcb1e0b995a9 | 252 | advertising_data.addData( |
paulszczepanek | 0:fcb1e0b995a9 | 253 | GapAdvertisingData::COMPLETE_LOCAL_NAME, |
paulszczepanek | 0:fcb1e0b995a9 | 254 | DEVICE_NAME, |
paulszczepanek | 0:fcb1e0b995a9 | 255 | sizeof(DEVICE_NAME) |
paulszczepanek | 0:fcb1e0b995a9 | 256 | ); |
paulszczepanek | 0:fcb1e0b995a9 | 257 | |
paulszczepanek | 0:fcb1e0b995a9 | 258 | error = _ble.gap().setAdvertisingPayload(advertising_data); |
paulszczepanek | 0:fcb1e0b995a9 | 259 | |
paulszczepanek | 0:fcb1e0b995a9 | 260 | if (error) { |
paulszczepanek | 0:fcb1e0b995a9 | 261 | printf("Error during Gap::setAdvertisingPayload\r\n"); |
paulszczepanek | 0:fcb1e0b995a9 | 262 | return; |
paulszczepanek | 0:fcb1e0b995a9 | 263 | } |
paulszczepanek | 0:fcb1e0b995a9 | 264 | |
paulszczepanek | 0:fcb1e0b995a9 | 265 | /* advertise to everyone */ |
paulszczepanek | 0:fcb1e0b995a9 | 266 | _ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); |
paulszczepanek | 0:fcb1e0b995a9 | 267 | /* how many milliseconds between advertisements, lower interval |
paulszczepanek | 0:fcb1e0b995a9 | 268 | * increases the chances of being seen at the cost of more power */ |
paulszczepanek | 0:fcb1e0b995a9 | 269 | _ble.gap().setAdvertisingInterval(20); |
paulszczepanek | 0:fcb1e0b995a9 | 270 | _ble.gap().setAdvertisingTimeout(0); |
paulszczepanek | 0:fcb1e0b995a9 | 271 | |
paulszczepanek | 0:fcb1e0b995a9 | 272 | error = _ble.gap().startAdvertising(); |
paulszczepanek | 0:fcb1e0b995a9 | 273 | |
paulszczepanek | 0:fcb1e0b995a9 | 274 | if (error) { |
paulszczepanek | 0:fcb1e0b995a9 | 275 | printf("Error during Gap::startAdvertising.\r\n"); |
paulszczepanek | 0:fcb1e0b995a9 | 276 | return; |
paulszczepanek | 0:fcb1e0b995a9 | 277 | } |
paulszczepanek | 0:fcb1e0b995a9 | 278 | |
paulszczepanek | 0:fcb1e0b995a9 | 279 | /** This tells the stack to generate a pairingRequest event |
paulszczepanek | 0:fcb1e0b995a9 | 280 | * which will require this application to respond before pairing |
paulszczepanek | 0:fcb1e0b995a9 | 281 | * can proceed. Setting it to false will automatically accept |
paulszczepanek | 0:fcb1e0b995a9 | 282 | * pairing. */ |
paulszczepanek | 0:fcb1e0b995a9 | 283 | _ble.securityManager().setPairingRequestAuthorisation(true); |
paulszczepanek | 0:fcb1e0b995a9 | 284 | }; |
paulszczepanek | 0:fcb1e0b995a9 | 285 | |
paulszczepanek | 0:fcb1e0b995a9 | 286 | /** This is called by Gap to notify the application we connected, |
paulszczepanek | 0:fcb1e0b995a9 | 287 | * in our case it immediately requests a change in link security */ |
paulszczepanek | 0:fcb1e0b995a9 | 288 | virtual void on_connect(const Gap::ConnectionCallbackParams_t *connection_event) |
paulszczepanek | 0:fcb1e0b995a9 | 289 | { |
paulszczepanek | 0:fcb1e0b995a9 | 290 | ble_error_t error; |
paulszczepanek | 0:fcb1e0b995a9 | 291 | |
paulszczepanek | 0:fcb1e0b995a9 | 292 | /* remember the device that connects to us now so we can connect to it |
paulszczepanek | 0:fcb1e0b995a9 | 293 | * during the next demonstration */ |
paulszczepanek | 0:fcb1e0b995a9 | 294 | memcpy(_peer_address, connection_event->peerAddr, sizeof(_peer_address)); |
paulszczepanek | 0:fcb1e0b995a9 | 295 | |
paulszczepanek | 0:fcb1e0b995a9 | 296 | /* store the handle for future Security Manager requests */ |
paulszczepanek | 0:fcb1e0b995a9 | 297 | _handle = connection_event->handle; |
paulszczepanek | 0:fcb1e0b995a9 | 298 | |
paulszczepanek | 0:fcb1e0b995a9 | 299 | /* Request a change in link security. This will be done |
paulszczepanek | 0:fcb1e0b995a9 | 300 | * indirectly by asking the master of the connection to |
paulszczepanek | 0:fcb1e0b995a9 | 301 | * change it. Depending on circumstances different actions |
paulszczepanek | 0:fcb1e0b995a9 | 302 | * may be taken by the master which will trigger events |
paulszczepanek | 0:fcb1e0b995a9 | 303 | * which the applications should deal with. */ |
paulszczepanek | 0:fcb1e0b995a9 | 304 | error = _ble.securityManager().setLinkSecurity( |
paulszczepanek | 0:fcb1e0b995a9 | 305 | _handle, |
paulszczepanek | 0:fcb1e0b995a9 | 306 | SecurityManager::SECURITY_MODE_ENCRYPTION_NO_MITM |
paulszczepanek | 0:fcb1e0b995a9 | 307 | ); |
paulszczepanek | 0:fcb1e0b995a9 | 308 | |
paulszczepanek | 0:fcb1e0b995a9 | 309 | if (error) { |
paulszczepanek | 0:fcb1e0b995a9 | 310 | printf("Error during SM::setLinkSecurity %d\r\n", error); |
paulszczepanek | 0:fcb1e0b995a9 | 311 | return; |
paulszczepanek | 0:fcb1e0b995a9 | 312 | } |
paulszczepanek | 0:fcb1e0b995a9 | 313 | }; |
paulszczepanek | 0:fcb1e0b995a9 | 314 | }; |
paulszczepanek | 0:fcb1e0b995a9 | 315 | |
paulszczepanek | 0:fcb1e0b995a9 | 316 | /** A central device will scan, connect to a peer and request pairing. */ |
paulszczepanek | 0:fcb1e0b995a9 | 317 | class SMDeviceCentral : public SMDevice { |
paulszczepanek | 0:fcb1e0b995a9 | 318 | public: |
paulszczepanek | 0:fcb1e0b995a9 | 319 | SMDeviceCentral(BLE &ble, events::EventQueue &event_queue, BLEProtocol::AddressBytes_t &peer_address) |
paulszczepanek | 0:fcb1e0b995a9 | 320 | : SMDevice(ble, event_queue, peer_address) { } |
paulszczepanek | 0:fcb1e0b995a9 | 321 | |
paulszczepanek | 0:fcb1e0b995a9 | 322 | virtual void start() |
paulszczepanek | 0:fcb1e0b995a9 | 323 | { |
paulszczepanek | 0:fcb1e0b995a9 | 324 | /* start scanning and attach a callback that will handle advertisements |
paulszczepanek | 0:fcb1e0b995a9 | 325 | * and scan requests responses */ |
paulszczepanek | 0:fcb1e0b995a9 | 326 | ble_error_t error = _ble.gap().startScan(this, &SMDeviceCentral::on_scan); |
paulszczepanek | 0:fcb1e0b995a9 | 327 | |
paulszczepanek | 0:fcb1e0b995a9 | 328 | if (error) { |
paulszczepanek | 0:fcb1e0b995a9 | 329 | printf("Error during Gap::startScan %d\r\n", error); |
paulszczepanek | 0:fcb1e0b995a9 | 330 | return; |
paulszczepanek | 0:fcb1e0b995a9 | 331 | } |
paulszczepanek | 0:fcb1e0b995a9 | 332 | } |
paulszczepanek | 0:fcb1e0b995a9 | 333 | |
paulszczepanek | 0:fcb1e0b995a9 | 334 | /** Look at scan payload to find a peer device and connect to it */ |
paulszczepanek | 0:fcb1e0b995a9 | 335 | void on_scan(const Gap::AdvertisementCallbackParams_t *params) |
paulszczepanek | 0:fcb1e0b995a9 | 336 | { |
paulszczepanek | 0:fcb1e0b995a9 | 337 | /* don't bother with analysing scan result if we're already connecting */ |
paulszczepanek | 0:fcb1e0b995a9 | 338 | if (_is_connecting) { |
paulszczepanek | 0:fcb1e0b995a9 | 339 | return; |
paulszczepanek | 0:fcb1e0b995a9 | 340 | } |
paulszczepanek | 0:fcb1e0b995a9 | 341 | |
paulszczepanek | 0:fcb1e0b995a9 | 342 | /* parse the advertising payload, looking for a discoverable device */ |
paulszczepanek | 0:fcb1e0b995a9 | 343 | for (uint8_t i = 0; i < params->advertisingDataLen; ++i) { |
paulszczepanek | 0:fcb1e0b995a9 | 344 | /* The advertising payload is a collection of key/value records where |
paulszczepanek | 0:fcb1e0b995a9 | 345 | * byte 0: length of the record excluding this byte |
paulszczepanek | 0:fcb1e0b995a9 | 346 | * byte 1: The key, it is the type of the data |
paulszczepanek | 0:fcb1e0b995a9 | 347 | * byte [2..N] The value. N is equal to byte0 - 1 */ |
paulszczepanek | 0:fcb1e0b995a9 | 348 | const uint8_t record_length = params->advertisingData[i]; |
paulszczepanek | 0:fcb1e0b995a9 | 349 | if (record_length == 0) { |
paulszczepanek | 0:fcb1e0b995a9 | 350 | continue; |
paulszczepanek | 0:fcb1e0b995a9 | 351 | } |
paulszczepanek | 0:fcb1e0b995a9 | 352 | |
paulszczepanek | 0:fcb1e0b995a9 | 353 | /* connect to the same device that connected to us */ |
paulszczepanek | 0:fcb1e0b995a9 | 354 | if (memcmp(params->peerAddr, _peer_address, sizeof(_peer_address)) == 0) { |
paulszczepanek | 0:fcb1e0b995a9 | 355 | |
paulszczepanek | 0:fcb1e0b995a9 | 356 | ble_error_t error = _ble.gap().connect( |
paulszczepanek | 0:fcb1e0b995a9 | 357 | params->peerAddr, params->addressType, |
paulszczepanek | 0:fcb1e0b995a9 | 358 | NULL, NULL |
paulszczepanek | 0:fcb1e0b995a9 | 359 | ); |
paulszczepanek | 0:fcb1e0b995a9 | 360 | |
paulszczepanek | 0:fcb1e0b995a9 | 361 | if (error) { |
paulszczepanek | 0:fcb1e0b995a9 | 362 | printf("Error during Gap::connect %d\r\n", error); |
paulszczepanek | 0:fcb1e0b995a9 | 363 | return; |
paulszczepanek | 0:fcb1e0b995a9 | 364 | } |
paulszczepanek | 0:fcb1e0b995a9 | 365 | |
paulszczepanek | 0:fcb1e0b995a9 | 366 | /* we may have already scan events waiting |
paulszczepanek | 0:fcb1e0b995a9 | 367 | * to be processed so we need to remember |
paulszczepanek | 0:fcb1e0b995a9 | 368 | * that we are already connecting and ignore them */ |
paulszczepanek | 0:fcb1e0b995a9 | 369 | _is_connecting = true; |
paulszczepanek | 0:fcb1e0b995a9 | 370 | |
paulszczepanek | 0:fcb1e0b995a9 | 371 | return; |
paulszczepanek | 0:fcb1e0b995a9 | 372 | } |
paulszczepanek | 0:fcb1e0b995a9 | 373 | |
paulszczepanek | 0:fcb1e0b995a9 | 374 | i += record_length; |
paulszczepanek | 0:fcb1e0b995a9 | 375 | } |
paulszczepanek | 0:fcb1e0b995a9 | 376 | }; |
paulszczepanek | 0:fcb1e0b995a9 | 377 | |
paulszczepanek | 0:fcb1e0b995a9 | 378 | /** This is called by Gap to notify the application we connected, |
paulszczepanek | 0:fcb1e0b995a9 | 379 | * in our case it immediately request pairing */ |
paulszczepanek | 0:fcb1e0b995a9 | 380 | virtual void on_connect(const Gap::ConnectionCallbackParams_t *connection_event) |
paulszczepanek | 0:fcb1e0b995a9 | 381 | { |
paulszczepanek | 0:fcb1e0b995a9 | 382 | ble_error_t error; |
paulszczepanek | 0:fcb1e0b995a9 | 383 | |
paulszczepanek | 0:fcb1e0b995a9 | 384 | /* store the handle for future Security Manager requests */ |
paulszczepanek | 0:fcb1e0b995a9 | 385 | _handle = connection_event->handle; |
paulszczepanek | 0:fcb1e0b995a9 | 386 | |
paulszczepanek | 0:fcb1e0b995a9 | 387 | /* in this example the local device is the master so we request pairing */ |
paulszczepanek | 0:fcb1e0b995a9 | 388 | error = _ble.securityManager().requestPairing(_handle); |
paulszczepanek | 0:fcb1e0b995a9 | 389 | |
paulszczepanek | 0:fcb1e0b995a9 | 390 | if (error) { |
paulszczepanek | 0:fcb1e0b995a9 | 391 | printf("Error during SM::requestPairing %d\r\n", error); |
paulszczepanek | 0:fcb1e0b995a9 | 392 | return; |
paulszczepanek | 0:fcb1e0b995a9 | 393 | } |
paulszczepanek | 0:fcb1e0b995a9 | 394 | |
paulszczepanek | 0:fcb1e0b995a9 | 395 | /* upon pairing success the application will disconnect */ |
paulszczepanek | 0:fcb1e0b995a9 | 396 | }; |
paulszczepanek | 0:fcb1e0b995a9 | 397 | }; |
paulszczepanek | 0:fcb1e0b995a9 | 398 | |
paulszczepanek | 0:fcb1e0b995a9 | 399 | int main() |
paulszczepanek | 0:fcb1e0b995a9 | 400 | { |
paulszczepanek | 0:fcb1e0b995a9 | 401 | BLE& ble = BLE::Instance(); |
paulszczepanek | 0:fcb1e0b995a9 | 402 | events::EventQueue queue; |
paulszczepanek | 0:fcb1e0b995a9 | 403 | |
paulszczepanek | 0:fcb1e0b995a9 | 404 | { |
paulszczepanek | 0:fcb1e0b995a9 | 405 | printf("\r\n PERIPHERAL \r\n\r\n"); |
paulszczepanek | 0:fcb1e0b995a9 | 406 | SMDevicePeripheral peripheral(ble, queue, peer_address); |
paulszczepanek | 0:fcb1e0b995a9 | 407 | peripheral.run(); |
paulszczepanek | 0:fcb1e0b995a9 | 408 | } |
paulszczepanek | 0:fcb1e0b995a9 | 409 | |
paulszczepanek | 0:fcb1e0b995a9 | 410 | { |
paulszczepanek | 0:fcb1e0b995a9 | 411 | printf("\r\n CENTRAL \r\n\r\n"); |
paulszczepanek | 0:fcb1e0b995a9 | 412 | SMDeviceCentral central(ble, queue, peer_address); |
paulszczepanek | 0:fcb1e0b995a9 | 413 | central.run(); |
paulszczepanek | 0:fcb1e0b995a9 | 414 | } |
paulszczepanek | 0:fcb1e0b995a9 | 415 | |
paulszczepanek | 0:fcb1e0b995a9 | 416 | return 0; |
paulszczepanek | 0:fcb1e0b995a9 | 417 | } |