Martin Woolley
Solution for Bluetooth SIG hands-on training course
Dependencies: BLE_API mbed-dev-bin nRF51822-bluetooth-mdw
Fork of
microbit-dal-bluetooth-mdw_starter
by 
Martin Woolley
source/bluetooth/MicroBitBLEManager.cpp@32:ece16b5987dd, 2016-07-13 (annotated)
- Committer:
- LancasterUniversity
- Date:
- Wed Jul 13 12:18:11 2016 +0100
- Revision:
- 32:ece16b5987dd
- Parent:
- 31:87789e55bac7
- Child:
- 35:8ce23bc1af38
Synchronized with git rev 36d9130b
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| Jonathan Austin |
1:8aa5cdb4ab67 | 1 | /* |
| Jonathan Austin |
1:8aa5cdb4ab67 | 2 | The MIT License (MIT) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 3 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 4 | Copyright (c) 2016 British Broadcasting Corporation. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 5 | This software is provided by Lancaster University by arrangement with the BBC. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 6 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 7 | Permission is hereby granted, free of charge, to any person obtaining a |
| Jonathan Austin |
1:8aa5cdb4ab67 | 8 | copy of this software and associated documentation files (the "Software"), |
| Jonathan Austin |
1:8aa5cdb4ab67 | 9 | to deal in the Software without restriction, including without limitation |
| Jonathan Austin |
1:8aa5cdb4ab67 | 10 | the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| Jonathan Austin |
1:8aa5cdb4ab67 | 11 | and/or sell copies of the Software, and to permit persons to whom the |
| Jonathan Austin |
1:8aa5cdb4ab67 | 12 | Software is furnished to do so, subject to the following conditions: |
| Jonathan Austin |
1:8aa5cdb4ab67 | 13 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 14 | The above copyright notice and this permission notice shall be included in |
| Jonathan Austin |
1:8aa5cdb4ab67 | 15 | all copies or substantial portions of the Software. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 16 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 17 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| Jonathan Austin |
1:8aa5cdb4ab67 | 18 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| Jonathan Austin |
1:8aa5cdb4ab67 | 19 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| Jonathan Austin |
1:8aa5cdb4ab67 | 20 | THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| Jonathan Austin |
1:8aa5cdb4ab67 | 21 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| Jonathan Austin |
1:8aa5cdb4ab67 | 22 | FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| Jonathan Austin |
1:8aa5cdb4ab67 | 23 | DEALINGS IN THE SOFTWARE. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 24 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 25 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 26 | #include "MicroBitConfig.h" |
| Jonathan Austin |
1:8aa5cdb4ab67 | 27 | #include "MicroBitBLEManager.h" |
| Jonathan Austin |
1:8aa5cdb4ab67 | 28 | #include "MicroBitStorage.h" |
| Jonathan Austin |
1:8aa5cdb4ab67 | 29 | #include "MicroBitFiber.h" |
| Jonathan Austin |
1:8aa5cdb4ab67 | 30 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 31 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 32 | /* The underlying Nordic libraries that support BLE do not compile cleanly with the stringent GCC settings we employ. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 33 | * If we're compiling under GCC, then we suppress any warnings generated from this code (but not the rest of the DAL) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 34 | * The ARM cc compiler is more tolerant. We don't test __GNUC__ here to detect GCC as ARMCC also typically sets this |
| Jonathan Austin |
1:8aa5cdb4ab67 | 35 | * as a compatability option, but does not support the options used... |
| Jonathan Austin |
1:8aa5cdb4ab67 | 36 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 37 | #if !defined(__arm) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 38 | #pragma GCC diagnostic ignored "-Wunused-function" |
| Jonathan Austin |
1:8aa5cdb4ab67 | 39 | #pragma GCC diagnostic push |
| Jonathan Austin |
1:8aa5cdb4ab67 | 40 | #pragma GCC diagnostic ignored "-Wunused-parameter" |
| Jonathan Austin |
1:8aa5cdb4ab67 | 41 | #endif |
| Jonathan Austin |
1:8aa5cdb4ab67 | 42 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 43 | #include "ble.h" |
| Jonathan Austin |
1:8aa5cdb4ab67 | 44 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 45 | extern "C" |
| Jonathan Austin |
1:8aa5cdb4ab67 | 46 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 47 | #include "device_manager.h" |
| Jonathan Austin |
1:8aa5cdb4ab67 | 48 | uint32_t btle_set_gatt_table_size(uint32_t size); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 49 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 50 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 51 | /* |
| Jonathan Austin |
1:8aa5cdb4ab67 | 52 | * Return to our predefined compiler settings. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 53 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 54 | #if !defined(__arm) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 55 | #pragma GCC diagnostic pop |
| Jonathan Austin |
1:8aa5cdb4ab67 | 56 | #endif |
| Jonathan Austin |
1:8aa5cdb4ab67 | 57 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 58 | #define MICROBIT_PAIRING_FADE_SPEED 4 |
| Jonathan Austin |
1:8aa5cdb4ab67 | 59 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 60 | const char* MICROBIT_BLE_MANUFACTURER = NULL; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 61 | const char* MICROBIT_BLE_MODEL = "BBC micro:bit"; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 62 | const char* MICROBIT_BLE_HARDWARE_VERSION = NULL; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 63 | const char* MICROBIT_BLE_FIRMWARE_VERSION = MICROBIT_DAL_VERSION; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 64 | const char* MICROBIT_BLE_SOFTWARE_VERSION = NULL; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 65 | const int8_t MICROBIT_BLE_POWER_LEVEL[] = {-30, -20, -16, -12, -8, -4, 0, 4}; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 66 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 67 | /* |
| Jonathan Austin |
1:8aa5cdb4ab67 | 68 | * Many of the mbed interfaces we need to use only support callbacks to plain C functions, rather than C++ methods. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 69 | * So, we maintain a pointer to the MicroBitBLEManager that's in use. Ths way, we can still access resources on the micro:bit |
| Jonathan Austin |
1:8aa5cdb4ab67 | 70 | * whilst keeping the code modular. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 71 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 72 | static MicroBitBLEManager *manager = NULL; // Singleton reference to the BLE manager. many mbed BLE API callbacks still do not support member funcions yet. :-( |
| Jonathan Austin |
1:8aa5cdb4ab67 | 73 | static uint8_t deviceID = 255; // Unique ID for the peer that has connected to us. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 74 | static Gap::Handle_t pairingHandle = 0; // The connection handle used during a pairing process. Used to ensure that connections are dropped elegantly. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 75 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 76 | static void storeSystemAttributes(Gap::Handle_t handle) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 77 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 78 | if(manager->storage != NULL && deviceID < MICROBIT_BLE_MAXIMUM_BONDS) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 79 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 80 | ManagedString key("bleSysAttrs"); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 81 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 82 | KeyValuePair* bleSysAttrs = manager->storage->get(key); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 83 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 84 | BLESysAttribute attrib; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 85 | BLESysAttributeStore attribStore; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 86 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 87 | uint16_t len = sizeof(attrib.sys_attr); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 88 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 89 | sd_ble_gatts_sys_attr_get(handle, attrib.sys_attr, &len, BLE_GATTS_SYS_ATTR_FLAG_SYS_SRVCS); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 90 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 91 | //copy our stored sysAttrs |
| Jonathan Austin |
1:8aa5cdb4ab67 | 92 | if(bleSysAttrs != NULL) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 93 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 94 | memcpy(&attribStore, bleSysAttrs->value, sizeof(BLESysAttributeStore)); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 95 | delete bleSysAttrs; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 96 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 97 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 98 | //check if we need to update |
| Jonathan Austin |
1:8aa5cdb4ab67 | 99 | if(memcmp(attribStore.sys_attrs[deviceID].sys_attr, attrib.sys_attr, len) != 0) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 100 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 101 | attribStore.sys_attrs[deviceID] = attrib; |
| LancasterUniversity | 32:ece16b5987dd | 102 | manager->storage->put(key, (uint8_t *)&attribStore, sizeof(attribStore)); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 103 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 104 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 105 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 106 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 107 | /** |
| Jonathan Austin |
1:8aa5cdb4ab67 | 108 | * Callback when a BLE GATT disconnect occurs. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 109 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 110 | static void bleDisconnectionCallback(const Gap::DisconnectionCallbackParams_t *reason) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 111 | { |
| LancasterUniversity | 23:6055f6c19fa6 | 112 | MicroBitEvent(MICROBIT_ID_BLE,MICROBIT_BLE_EVT_DISCONNECTED); |
| LancasterUniversity | 26:493daf8966fd | 113 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 114 | storeSystemAttributes(reason->handle); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 115 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 116 | if (manager) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 117 | manager->advertise(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 118 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 119 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 120 | /** |
| LancasterUniversity | 23:6055f6c19fa6 | 121 | * Callback when a BLE connection is established. |
| LancasterUniversity | 23:6055f6c19fa6 | 122 | */ |
| LancasterUniversity | 26:493daf8966fd | 123 | static void bleConnectionCallback(const Gap::ConnectionCallbackParams_t*) |
| LancasterUniversity | 23:6055f6c19fa6 | 124 | { |
| LancasterUniversity | 23:6055f6c19fa6 | 125 | MicroBitEvent(MICROBIT_ID_BLE,MICROBIT_BLE_EVT_CONNECTED); |
| LancasterUniversity | 23:6055f6c19fa6 | 126 | } |
| LancasterUniversity | 23:6055f6c19fa6 | 127 | |
| LancasterUniversity | 23:6055f6c19fa6 | 128 | /** |
| Jonathan Austin |
1:8aa5cdb4ab67 | 129 | * Callback when a BLE SYS_ATTR_MISSING. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 130 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 131 | static void bleSysAttrMissingCallback(const GattSysAttrMissingCallbackParams *params) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 132 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 133 | int complete = 0; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 134 | deviceID = 255; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 135 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 136 | dm_handle_t dm_handle = {0,0,0,0}; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 137 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 138 | int ret = dm_handle_get(params->connHandle, &dm_handle); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 139 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 140 | if (ret == 0) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 141 | deviceID = dm_handle.device_id; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 142 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 143 | if(manager->storage != NULL && deviceID < MICROBIT_BLE_MAXIMUM_BONDS) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 144 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 145 | ManagedString key("bleSysAttrs"); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 146 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 147 | KeyValuePair* bleSysAttrs = manager->storage->get(key); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 148 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 149 | BLESysAttributeStore attribStore; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 150 | BLESysAttribute attrib; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 151 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 152 | if(bleSysAttrs != NULL) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 153 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 154 | //restore our sysAttrStore |
| Jonathan Austin |
1:8aa5cdb4ab67 | 155 | memcpy(&attribStore, bleSysAttrs->value, sizeof(BLESysAttributeStore)); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 156 | delete bleSysAttrs; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 157 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 158 | attrib = attribStore.sys_attrs[deviceID]; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 159 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 160 | ret = sd_ble_gatts_sys_attr_set(params->connHandle, attrib.sys_attr, sizeof(attrib.sys_attr), BLE_GATTS_SYS_ATTR_FLAG_SYS_SRVCS); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 161 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 162 | complete = 1; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 163 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 164 | if(ret == 0) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 165 | ret = sd_ble_gatts_service_changed(params->connHandle, 0x000c, 0xffff); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 166 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 167 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 168 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 169 | if (!complete) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 170 | sd_ble_gatts_sys_attr_set(params->connHandle, NULL, 0, 0); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 171 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 172 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 173 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 174 | static void passkeyDisplayCallback(Gap::Handle_t handle, const SecurityManager::Passkey_t passkey) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 175 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 176 | (void) handle; /* -Wunused-param */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 177 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 178 | ManagedString passKey((const char *)passkey, SecurityManager::PASSKEY_LEN); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 179 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 180 | if (manager) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 181 | manager->pairingRequested(passKey); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 182 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 183 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 184 | static void securitySetupCompletedCallback(Gap::Handle_t handle, SecurityManager::SecurityCompletionStatus_t status) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 185 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 186 | (void) handle; /* -Wunused-param */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 187 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 188 | dm_handle_t dm_handle = {0,0,0,0}; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 189 | int ret = dm_handle_get(handle, &dm_handle); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 190 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 191 | if (ret == 0) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 192 | deviceID = dm_handle.device_id; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 193 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 194 | if (manager) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 195 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 196 | pairingHandle = handle; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 197 | manager->pairingComplete(status == SecurityManager::SEC_STATUS_SUCCESS); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 198 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 199 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 200 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 201 | /** |
| Jonathan Austin |
1:8aa5cdb4ab67 | 202 | * Constructor. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 203 | * |
| Jonathan Austin |
1:8aa5cdb4ab67 | 204 | * Configure and manage the micro:bit's Bluetooth Low Energy (BLE) stack. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 205 | * |
| Jonathan Austin |
1:8aa5cdb4ab67 | 206 | * @param _storage an instance of MicroBitStorage used to persist sys attribute information. (This is required for compatability with iOS). |
| Jonathan Austin |
1:8aa5cdb4ab67 | 207 | * |
| Jonathan Austin |
1:8aa5cdb4ab67 | 208 | * @note The BLE stack *cannot* be brought up in a static context (the software simply hangs or corrupts itself). |
| Jonathan Austin |
1:8aa5cdb4ab67 | 209 | * Hence, the init() member function should be used to initialise the BLE stack. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 210 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 211 | MicroBitBLEManager::MicroBitBLEManager(MicroBitStorage& _storage) : |
| Jonathan Austin |
1:8aa5cdb4ab67 | 212 | storage(&_storage) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 213 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 214 | manager = this; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 215 | this->ble = NULL; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 216 | this->pairingStatus = 0; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 217 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 218 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 219 | /** |
| Jonathan Austin |
1:8aa5cdb4ab67 | 220 | * Constructor. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 221 | * |
| Jonathan Austin |
1:8aa5cdb4ab67 | 222 | * Configure and manage the micro:bit's Bluetooth Low Energy (BLE) stack. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 223 | * |
| Jonathan Austin |
1:8aa5cdb4ab67 | 224 | * @note The BLE stack *cannot* be brought up in a static context (the software simply hangs or corrupts itself). |
| Jonathan Austin |
1:8aa5cdb4ab67 | 225 | * Hence, the init() member function should be used to initialise the BLE stack. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 226 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 227 | MicroBitBLEManager::MicroBitBLEManager() : |
| Jonathan Austin |
1:8aa5cdb4ab67 | 228 | storage(NULL) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 229 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 230 | manager = this; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 231 | this->ble = NULL; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 232 | this->pairingStatus = 0; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 233 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 234 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 235 | /** |
| Jonathan Austin |
1:8aa5cdb4ab67 | 236 | * When called, the micro:bit will begin advertising for a predefined period, |
| Jonathan Austin |
1:8aa5cdb4ab67 | 237 | * MICROBIT_BLE_ADVERTISING_TIMEOUT seconds to bonded devices. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 238 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 239 | void MicroBitBLEManager::advertise() |
| Jonathan Austin |
1:8aa5cdb4ab67 | 240 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 241 | if(ble) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 242 | ble->gap().startAdvertising(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 243 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 244 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 245 | /** |
| Jonathan Austin |
1:8aa5cdb4ab67 | 246 | * Post constructor initialisation method as the BLE stack cannot be brought |
| Jonathan Austin |
1:8aa5cdb4ab67 | 247 | * up in a static context. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 248 | * |
| Jonathan Austin |
1:8aa5cdb4ab67 | 249 | * @param deviceName The name used when advertising |
| Jonathan Austin |
1:8aa5cdb4ab67 | 250 | * @param serialNumber The serial number exposed by the device information service |
| Jonathan Austin |
1:8aa5cdb4ab67 | 251 | * @param messageBus An instance of an EventModel, used during pairing. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 252 | * @param enableBonding If true, the security manager enabled bonding. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 253 | * |
| Jonathan Austin |
1:8aa5cdb4ab67 | 254 | * @code |
| Jonathan Austin |
1:8aa5cdb4ab67 | 255 | * bleManager.init(uBit.getName(), uBit.getSerial(), uBit.messageBus, true); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 256 | * @endcode |
| Jonathan Austin |
1:8aa5cdb4ab67 | 257 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 258 | void MicroBitBLEManager::init(ManagedString deviceName, ManagedString serialNumber, EventModel& messageBus, bool enableBonding) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 259 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 260 | ManagedString BLEName("BBC micro:bit"); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 261 | this->deviceName = deviceName; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 262 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 263 | #if !(CONFIG_ENABLED(MICROBIT_BLE_WHITELIST)) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 264 | ManagedString namePrefix(" ["); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 265 | ManagedString namePostfix("]"); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 266 | BLEName = BLEName + namePrefix + deviceName + namePostfix; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 267 | #endif |
| Jonathan Austin |
1:8aa5cdb4ab67 | 268 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 269 | // Start the BLE stack. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 270 | #if CONFIG_ENABLED(MICROBIT_HEAP_REUSE_SD) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 271 | btle_set_gatt_table_size(MICROBIT_SD_GATT_TABLE_SIZE); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 272 | #endif |
| Jonathan Austin |
1:8aa5cdb4ab67 | 273 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 274 | ble = new BLEDevice(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 275 | ble->init(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 276 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 277 | // automatically restart advertising after a device disconnects. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 278 | ble->gap().onDisconnection(bleDisconnectionCallback); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 279 | ble->gattServer().onSysAttrMissing(bleSysAttrMissingCallback); |
| LancasterUniversity | 26:493daf8966fd | 280 | |
| LancasterUniversity | 24:3373f1fb0353 | 281 | // generate an event when a Bluetooth connection is established |
| LancasterUniversity | 23:6055f6c19fa6 | 282 | ble->gap().onConnection(bleConnectionCallback); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 283 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 284 | // Configure the stack to hold onto the CPU during critical timing events. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 285 | // mbed-classic performs __disable_irq() calls in its timers that can cause |
| Jonathan Austin |
1:8aa5cdb4ab67 | 286 | // MIC failures on secure BLE channels... |
| Jonathan Austin |
1:8aa5cdb4ab67 | 287 | ble_common_opt_radio_cpu_mutex_t opt; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 288 | opt.enable = 1; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 289 | sd_ble_opt_set(BLE_COMMON_OPT_RADIO_CPU_MUTEX, (const ble_opt_t *)&opt); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 290 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 291 | #if CONFIG_ENABLED(MICROBIT_BLE_PRIVATE_ADDRESSES) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 292 | // Configure for private addresses, so kids' behaviour can't be easily tracked. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 293 | ble->gap().setAddress(BLEProtocol::AddressType::RANDOM_PRIVATE_RESOLVABLE, {0}); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 294 | #endif |
| Jonathan Austin |
1:8aa5cdb4ab67 | 295 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 296 | // Setup our security requirements. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 297 | ble->securityManager().onPasskeyDisplay(passkeyDisplayCallback); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 298 | ble->securityManager().onSecuritySetupCompleted(securitySetupCompletedCallback); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 299 | ble->securityManager().init(enableBonding, (SecurityManager::MICROBIT_BLE_SECURITY_LEVEL == SecurityManager::SECURITY_MODE_ENCRYPTION_WITH_MITM), SecurityManager::IO_CAPS_DISPLAY_ONLY); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 300 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 301 | if (enableBonding) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 302 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 303 | // If we're in pairing mode, review the size of the bond table. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 304 | int bonds = getBondCount(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 305 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 306 | // TODO: It would be much better to implement some sort of LRU/NFU policy here, |
| Jonathan Austin |
1:8aa5cdb4ab67 | 307 | // but this isn't currently supported in mbed, so we'd need to layer break... |
| Jonathan Austin |
1:8aa5cdb4ab67 | 308 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 309 | // If we're full, empty the bond table. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 310 | if (bonds >= MICROBIT_BLE_MAXIMUM_BONDS) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 311 | ble->securityManager().purgeAllBondingState(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 312 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 313 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 314 | #if CONFIG_ENABLED(MICROBIT_BLE_WHITELIST) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 315 | // Configure a whitelist to filter all connection requetss from unbonded devices. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 316 | // Most BLE stacks only permit one connection at a time, so this prevents denial of service attacks. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 317 | BLEProtocol::Address_t bondedAddresses[MICROBIT_BLE_MAXIMUM_BONDS]; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 318 | Gap::Whitelist_t whitelist; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 319 | whitelist.addresses = bondedAddresses; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 320 | whitelist.capacity = MICROBIT_BLE_MAXIMUM_BONDS; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 321 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 322 | ble->securityManager().getAddressesFromBondTable(whitelist); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 323 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 324 | ble->gap().setWhitelist(whitelist); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 325 | ble->gap().setScanningPolicyMode(Gap::SCAN_POLICY_IGNORE_WHITELIST); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 326 | ble->gap().setAdvertisingPolicyMode(Gap::ADV_POLICY_FILTER_CONN_REQS); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 327 | #endif |
| Jonathan Austin |
1:8aa5cdb4ab67 | 328 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 329 | // Configure the radio at our default power level |
| Jonathan Austin |
1:8aa5cdb4ab67 | 330 | setTransmitPower(MICROBIT_BLE_DEFAULT_TX_POWER); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 331 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 332 | // Bring up core BLE services. |
| LancasterUniversity | 29:62f8b007debf | 333 | #if CONFIG_ENABLED(MICROBIT_BLE_DFU_SERVICE) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 334 | new MicroBitDFUService(*ble); |
| LancasterUniversity | 29:62f8b007debf | 335 | #endif |
| LancasterUniversity | 29:62f8b007debf | 336 | |
| LancasterUniversity | 29:62f8b007debf | 337 | #if CONFIG_ENABLED(MICROBIT_BLE_DEVICE_INFORMATION_SERVICE) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 338 | DeviceInformationService ble_device_information_service (*ble, MICROBIT_BLE_MANUFACTURER, MICROBIT_BLE_MODEL, serialNumber.toCharArray(), MICROBIT_BLE_HARDWARE_VERSION, MICROBIT_BLE_FIRMWARE_VERSION, MICROBIT_BLE_SOFTWARE_VERSION); |
| LancasterUniversity | 29:62f8b007debf | 339 | #endif |
| LancasterUniversity | 29:62f8b007debf | 340 | |
| LancasterUniversity | 29:62f8b007debf | 341 | #if CONFIG_ENABLED(MICROBIT_BLE_EVENT_SERVICE) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 342 | new MicroBitEventService(*ble, messageBus); |
| LancasterUniversity | 29:62f8b007debf | 343 | #else |
| LancasterUniversity | 29:62f8b007debf | 344 | (void)messageBus; |
| LancasterUniversity | 29:62f8b007debf | 345 | #endif |
| Jonathan Austin |
1:8aa5cdb4ab67 | 346 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 347 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 348 | // Configure for high speed mode where possible. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 349 | Gap::ConnectionParams_t fast; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 350 | ble->getPreferredConnectionParams(&fast); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 351 | fast.minConnectionInterval = 8; // 10 ms |
| Jonathan Austin |
1:8aa5cdb4ab67 | 352 | fast.maxConnectionInterval = 16; // 20 ms |
| Jonathan Austin |
1:8aa5cdb4ab67 | 353 | fast.slaveLatency = 0; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 354 | ble->setPreferredConnectionParams(&fast); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 355 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 356 | // Setup advertising. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 357 | #if CONFIG_ENABLED(MICROBIT_BLE_WHITELIST) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 358 | ble->accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 359 | #else |
| Jonathan Austin |
1:8aa5cdb4ab67 | 360 | ble->accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 361 | #endif |
| Jonathan Austin |
1:8aa5cdb4ab67 | 362 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 363 | ble->accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)BLEName.toCharArray(), BLEName.length()); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 364 | ble->setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 365 | ble->setAdvertisingInterval(200); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 366 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 367 | #if (MICROBIT_BLE_ADVERTISING_TIMEOUT > 0) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 368 | ble->gap().setAdvertisingTimeout(MICROBIT_BLE_ADVERTISING_TIMEOUT); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 369 | #endif |
| Jonathan Austin |
1:8aa5cdb4ab67 | 370 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 371 | // If we have whitelisting enabled, then prevent only enable advertising of we have any binded devices... |
| Jonathan Austin |
1:8aa5cdb4ab67 | 372 | // This is to further protect kids' privacy. If no-one initiates BLE, then the device is unreachable. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 373 | // If whiltelisting is disabled, then we always advertise. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 374 | #if CONFIG_ENABLED(MICROBIT_BLE_WHITELIST) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 375 | if (whitelist.size > 0) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 376 | #endif |
| Jonathan Austin |
1:8aa5cdb4ab67 | 377 | ble->startAdvertising(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 378 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 379 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 380 | /** |
| Jonathan Austin |
1:8aa5cdb4ab67 | 381 | * Change the output power level of the transmitter to the given value. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 382 | * |
| Jonathan Austin |
1:8aa5cdb4ab67 | 383 | * @param power a value in the range 0..7, where 0 is the lowest power and 7 is the highest. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 384 | * |
| Jonathan Austin |
1:8aa5cdb4ab67 | 385 | * @return MICROBIT_OK on success, or MICROBIT_INVALID_PARAMETER if the value is out of range. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 386 | * |
| Jonathan Austin |
1:8aa5cdb4ab67 | 387 | * @code |
| Jonathan Austin |
1:8aa5cdb4ab67 | 388 | * // maximum transmission power. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 389 | * bleManager.setTransmitPower(7); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 390 | * @endcode |
| Jonathan Austin |
1:8aa5cdb4ab67 | 391 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 392 | int MicroBitBLEManager::setTransmitPower(int power) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 393 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 394 | if (power < 0 || power >= MICROBIT_BLE_POWER_LEVELS) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 395 | return MICROBIT_INVALID_PARAMETER; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 396 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 397 | if (ble->gap().setTxPower(MICROBIT_BLE_POWER_LEVEL[power]) != NRF_SUCCESS) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 398 | return MICROBIT_NOT_SUPPORTED; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 399 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 400 | return MICROBIT_OK; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 401 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 402 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 403 | /** |
| Jonathan Austin |
1:8aa5cdb4ab67 | 404 | * Determines the number of devices currently bonded with this micro:bit. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 405 | * @return The number of active bonds. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 406 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 407 | int MicroBitBLEManager::getBondCount() |
| Jonathan Austin |
1:8aa5cdb4ab67 | 408 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 409 | BLEProtocol::Address_t bondedAddresses[MICROBIT_BLE_MAXIMUM_BONDS]; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 410 | Gap::Whitelist_t whitelist; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 411 | whitelist.addresses = bondedAddresses; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 412 | whitelist.capacity = MICROBIT_BLE_MAXIMUM_BONDS; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 413 | ble->securityManager().getAddressesFromBondTable(whitelist); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 414 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 415 | return whitelist.bonds; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 416 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 417 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 418 | /** |
| Jonathan Austin |
1:8aa5cdb4ab67 | 419 | * A request to pair has been received from a BLE device. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 420 | * If we're in pairing mode, display the passkey to the user. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 421 | * Also, purge the bonding table if it has reached capacity. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 422 | * |
| Jonathan Austin |
1:8aa5cdb4ab67 | 423 | * @note for internal use only. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 424 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 425 | void MicroBitBLEManager::pairingRequested(ManagedString passKey) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 426 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 427 | // Update our mode to display the passkey. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 428 | this->passKey = passKey; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 429 | this->pairingStatus = MICROBIT_BLE_PAIR_REQUEST; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 430 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 431 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 432 | /** |
| Jonathan Austin |
1:8aa5cdb4ab67 | 433 | * A pairing request has been sucessfully completed. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 434 | * If we're in pairing mode, display a success or failure message. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 435 | * |
| Jonathan Austin |
1:8aa5cdb4ab67 | 436 | * @note for internal use only. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 437 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 438 | void MicroBitBLEManager::pairingComplete(bool success) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 439 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 440 | this->pairingStatus = MICROBIT_BLE_PAIR_COMPLETE; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 441 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 442 | if(success) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 443 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 444 | this->pairingStatus |= MICROBIT_BLE_PAIR_SUCCESSFUL; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 445 | fiber_add_idle_component(this); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 446 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 447 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 448 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 449 | /** |
| Jonathan Austin |
1:8aa5cdb4ab67 | 450 | * Periodic callback in thread context. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 451 | * We use this here purely to safely issue a disconnect operation after a pairing operation is complete. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 452 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 453 | void MicroBitBLEManager::idleTick() |
| Jonathan Austin |
1:8aa5cdb4ab67 | 454 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 455 | if (ble) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 456 | ble->disconnect(pairingHandle, Gap::REMOTE_DEV_TERMINATION_DUE_TO_POWER_OFF); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 457 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 458 | fiber_remove_idle_component(this); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 459 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 460 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 461 | /** |
| Jonathan Austin |
1:8aa5cdb4ab67 | 462 | * Enter pairing mode. This is mode is called to initiate pairing, and to enable FOTA programming |
| Jonathan Austin |
1:8aa5cdb4ab67 | 463 | * of the micro:bit in cases where BLE is disabled during normal operation. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 464 | * |
| Jonathan Austin |
1:8aa5cdb4ab67 | 465 | * @param display An instance of MicroBitDisplay used when displaying pairing information. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 466 | * @param authorizationButton The button to use to authorise a pairing request. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 467 | * |
| Jonathan Austin |
1:8aa5cdb4ab67 | 468 | * @code |
| Jonathan Austin |
1:8aa5cdb4ab67 | 469 | * // initiate pairing mode |
| Jonathan Austin |
1:8aa5cdb4ab67 | 470 | * bleManager.pairingMode(uBit.display, uBit.buttonA); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 471 | * @endcode |
| Jonathan Austin |
1:8aa5cdb4ab67 | 472 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 473 | void MicroBitBLEManager::pairingMode(MicroBitDisplay& display, MicroBitButton& authorisationButton) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 474 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 475 | ManagedString namePrefix("BBC micro:bit ["); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 476 | ManagedString namePostfix("]"); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 477 | ManagedString BLEName = namePrefix + deviceName + namePostfix; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 478 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 479 | ManagedString msg("PAIRING MODE!"); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 480 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 481 | int timeInPairingMode = 0; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 482 | int brightness = 255; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 483 | int fadeDirection = 0; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 484 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 485 | ble->gap().stopAdvertising(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 486 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 487 | // Clear the whitelist (if we have one), so that we're discoverable by all BLE devices. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 488 | #if CONFIG_ENABLED(MICROBIT_BLE_WHITELIST) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 489 | BLEProtocol::Address_t addresses[MICROBIT_BLE_MAXIMUM_BONDS]; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 490 | Gap::Whitelist_t whitelist; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 491 | whitelist.addresses = addresses; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 492 | whitelist.capacity = MICROBIT_BLE_MAXIMUM_BONDS; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 493 | whitelist.size = 0; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 494 | ble->gap().setWhitelist(whitelist); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 495 | ble->gap().setAdvertisingPolicyMode(Gap::ADV_POLICY_IGNORE_WHITELIST); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 496 | #endif |
| Jonathan Austin |
1:8aa5cdb4ab67 | 497 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 498 | // Update the advertised name of this micro:bit to include the device name |
| Jonathan Austin |
1:8aa5cdb4ab67 | 499 | ble->clearAdvertisingPayload(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 500 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 501 | ble->accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 502 | ble->accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)BLEName.toCharArray(), BLEName.length()); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 503 | ble->setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 504 | ble->setAdvertisingInterval(200); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 505 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 506 | ble->gap().setAdvertisingTimeout(0); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 507 | ble->gap().startAdvertising(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 508 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 509 | // Stop any running animations on the display |
| Jonathan Austin |
1:8aa5cdb4ab67 | 510 | display.stopAnimation(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 511 | display.scroll(msg); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 512 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 513 | // Display our name, visualised as a histogram in the display to aid identification. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 514 | showNameHistogram(display); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 515 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 516 | while(1) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 517 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 518 | if (pairingStatus & MICROBIT_BLE_PAIR_REQUEST) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 519 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 520 | timeInPairingMode = 0; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 521 | MicroBitImage arrow("0,0,255,0,0\n0,255,0,0,0\n255,255,255,255,255\n0,255,0,0,0\n0,0,255,0,0\n"); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 522 | display.print(arrow,0,0,0); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 523 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 524 | if (fadeDirection == 0) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 525 | brightness -= MICROBIT_PAIRING_FADE_SPEED; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 526 | else |
| Jonathan Austin |
1:8aa5cdb4ab67 | 527 | brightness += MICROBIT_PAIRING_FADE_SPEED; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 528 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 529 | if (brightness <= 40) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 530 | display.clear(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 531 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 532 | if (brightness <= 0) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 533 | fadeDirection = 1; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 534 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 535 | if (brightness >= 255) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 536 | fadeDirection = 0; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 537 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 538 | if (authorisationButton.isPressed()) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 539 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 540 | pairingStatus &= ~MICROBIT_BLE_PAIR_REQUEST; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 541 | pairingStatus |= MICROBIT_BLE_PAIR_PASSCODE; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 542 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 543 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 544 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 545 | if (pairingStatus & MICROBIT_BLE_PAIR_PASSCODE) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 546 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 547 | timeInPairingMode = 0; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 548 | display.setBrightness(255); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 549 | for (int i=0; i<passKey.length(); i++) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 550 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 551 | display.image.print(passKey.charAt(i),0,0); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 552 | fiber_sleep(800); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 553 | display.clear(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 554 | fiber_sleep(200); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 555 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 556 | if (pairingStatus & MICROBIT_BLE_PAIR_COMPLETE) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 557 | break; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 558 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 559 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 560 | fiber_sleep(1000); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 561 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 562 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 563 | if (pairingStatus & MICROBIT_BLE_PAIR_COMPLETE) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 564 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 565 | if (pairingStatus & MICROBIT_BLE_PAIR_SUCCESSFUL) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 566 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 567 | MicroBitImage tick("0,0,0,0,0\n0,0,0,0,255\n0,0,0,255,0\n255,0,255,0,0\n0,255,0,0,0\n"); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 568 | display.print(tick,0,0,0); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 569 | fiber_sleep(15000); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 570 | timeInPairingMode = MICROBIT_BLE_PAIRING_TIMEOUT * 30; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 571 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 572 | /* |
| Jonathan Austin |
1:8aa5cdb4ab67 | 573 | * Disabled, as the API to return the number of active bonds is not reliable at present... |
| Jonathan Austin |
1:8aa5cdb4ab67 | 574 | * |
| Jonathan Austin |
1:8aa5cdb4ab67 | 575 | display.clear(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 576 | ManagedString c(getBondCount()); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 577 | ManagedString c2("/"); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 578 | ManagedString c3(MICROBIT_BLE_MAXIMUM_BONDS); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 579 | ManagedString c4("USED"); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 580 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 581 | display.scroll(c+c2+c3+c4); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 582 | * |
| Jonathan Austin |
1:8aa5cdb4ab67 | 583 | * |
| Jonathan Austin |
1:8aa5cdb4ab67 | 584 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 585 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 586 | else |
| Jonathan Austin |
1:8aa5cdb4ab67 | 587 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 588 | MicroBitImage cross("255,0,0,0,255\n0,255,0,255,0\n0,0,255,0,0\n0,255,0,255,0\n255,0,0,0,255\n"); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 589 | display.print(cross,0,0,0); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 590 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 591 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 592 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 593 | fiber_sleep(100); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 594 | timeInPairingMode++; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 595 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 596 | if (timeInPairingMode >= MICROBIT_BLE_PAIRING_TIMEOUT * 30) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 597 | microbit_reset(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 598 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 599 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 600 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 601 | /** |
| Jonathan Austin |
1:8aa5cdb4ab67 | 602 | * Displays the device's ID code as a histogram on the provided MicroBitDisplay instance. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 603 | * |
| Jonathan Austin |
1:8aa5cdb4ab67 | 604 | * @param display The display instance used for displaying the histogram. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 605 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 606 | void MicroBitBLEManager::showNameHistogram(MicroBitDisplay &display) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 607 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 608 | uint32_t n = NRF_FICR->DEVICEID[1]; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 609 | int ld = 1; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 610 | int d = MICROBIT_DFU_HISTOGRAM_HEIGHT; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 611 | int h; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 612 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 613 | display.clear(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 614 | for (int i=0; i<MICROBIT_DFU_HISTOGRAM_WIDTH;i++) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 615 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 616 | h = (n % d) / ld; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 617 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 618 | n -= h; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 619 | d *= MICROBIT_DFU_HISTOGRAM_HEIGHT; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 620 | ld *= MICROBIT_DFU_HISTOGRAM_HEIGHT; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 621 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 622 | for (int j=0; j<h+1; j++) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 623 | display.image.setPixelValue(MICROBIT_DFU_HISTOGRAM_WIDTH-i-1, MICROBIT_DFU_HISTOGRAM_HEIGHT-j-1, 255); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 624 | } |
| LancasterUniversity | 21:cab56b701601 | 625 | } |