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
source/bluetooth/MicroBitAnimationService.cpp
- Committer:
- bluetooth_mdw
- Date:
- 2016-12-27
- Revision:
- 74:9771cd712730
- Child:
- 77:9909cbcd0ece
File content as of revision 74:9771cd712730:
/* The MIT License (MIT) Copyright (c) 2016 British Broadcasting Corporation. This software is provided by Lancaster University by arrangement with the BBC. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO Animation SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /** * Class definition for a MicroBit BLE Animation Service. * Provides a BLE gateway onto an Animation Model. */ #include "MicroBitConfig.h" #include "MicroBitAnimationService.h" #include "ble/UUID.h" #include "Animator.h" /** * Constructor. * Create a representation of the AnimationService * @param _ble The instance of a BLE device that we're running on. */ MicroBitAnimationService::MicroBitAnimationService(BLEDevice &_ble) : ble(_ble) { // UUID, valuePTR, length, max length, properties GattCharacteristic animationTypeCharacteristic( MicroBitAnimationServiceAnimationTypeCharacteristicUUID, (uint8_t *)animation_type_buffer, 1, 1, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE); GattCharacteristic animationStatusCharacteristic( MicroBitAnimationServiceAnimationStatusCharacteristicUUID, (uint8_t *)animation_status_buffer, 1, 1, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY); GattCharacteristic animationControlCharacteristic( MicroBitAnimationServiceAnimationControlCharacteristicUUID, (uint8_t *)animation_control_buffer, 1, 1, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE); animation_type_buffer[0] = 0x00; animation_status_buffer[0] = 0x00; animation_control_buffer[0] = 0x00; // Set default security requirements - optional // animationTypeCharacteristic.requireSecurity(SecurityManager::MICROBIT_BLE_SECURITY_LEVEL); // animationStatusCharacteristic.requireSecurity(SecurityManager::MICROBIT_BLE_SECURITY_LEVEL); // animationControlCharacteristic.requireSecurity(SecurityManager::MICROBIT_BLE_SECURITY_LEVEL); // create an array of our characteristics so we can pass them to the service when we create it GattCharacteristic *characteristics[] = {&animationTypeCharacteristic, &animationStatusCharacteristic, &animationControlCharacteristic}; // create the animation service and specify its characteristics GattService service(MicroBitAnimationServiceUUID, characteristics, sizeof(characteristics) / sizeof(GattCharacteristic *)); // add the service to the Bluetooth attribute table ble.addService(service); // take a note of the handles of our new characteristics now that they're in the attribute table animationTypeCharacteristicHandle = animationTypeCharacteristic.getValueHandle(); animationStatusCharacteristicHandle = animationStatusCharacteristic.getValueHandle(); animationControlCharacteristicHandle = animationControlCharacteristic.getValueHandle(); ble.gattServer().write(animationTypeCharacteristicHandle, (const uint8_t *)&animation_type_buffer, sizeof(animation_type_buffer)); ble.gattServer().write(animationStatusCharacteristicHandle, (const uint8_t *)&animation_status_buffer, sizeof(animation_status_buffer)); ble.gattServer().write(animationControlCharacteristicHandle, (const uint8_t *)&animation_control_buffer, sizeof(animation_control_buffer)); // register a callback function for when a characteristic is written to ble.onDataWritten(this, &MicroBitAnimationService::onDataWritten); // subscribe to animation status events so they can be notified to the connected client if (EventModel::defaultEventBus) EventModel::defaultEventBus->listen(ANIMATION_STATUS_EVENT, MICROBIT_EVT_ANY, this, &MicroBitAnimationService::animationStatusUpdate, MESSAGE_BUS_LISTENER_IMMEDIATE); } /** * Callback. Invoked when any of our attributes are written via BLE. */ void MicroBitAnimationService::onDataWritten(const GattWriteCallbackParams *params) { if (params->handle == animationTypeCharacteristicHandle && params->len >= 1) { uint8_t *value = (uint8_t *)params->data; uint16_t event_value = static_cast<uint16_t>(value[0]); MicroBitEvent evt(ANIMATION_TYPE_EVENT, event_value); return; } if (params->handle == animationControlCharacteristicHandle && params->len >= 1) { uint8_t *value = (uint8_t *)params->data; uint16_t event_value = static_cast<uint16_t>(value[0]); MicroBitEvent evt(ANIMATION_CONTROL_EVENT, event_value); return; } } void MicroBitAnimationService::animationStatusUpdate(MicroBitEvent e) { if (ble.getGapState().connected) { animation_status_buffer[0] = e.value; ble.gattServer().notify(animationStatusCharacteristicHandle,(uint8_t *)animation_status_buffer, 1); } } const uint8_t MicroBitAnimationServiceUUID[] = { 0xe9,0x5d,0x71,0x70,0x25,0x1d,0x47,0x0a,0xa0,0x62,0xfa,0x19,0x22,0xdf,0xa9,0xa8 }; const uint8_t MicroBitAnimationServiceAnimationTypeCharacteristicUUID[] = { 0xe9,0x5d,0xC3,0x06,0x25,0x1d,0x47,0x0a,0xa0,0x62,0xfa,0x19,0x22,0xdf,0xa9,0xa8 }; const uint8_t MicroBitAnimationServiceAnimationStatusCharacteristicUUID[] = { 0xe9,0x5d,0x45,0x92,0x25,0x1d,0x47,0x0a,0xa0,0x62,0xfa,0x19,0x22,0xdf,0xa9,0xa8 }; const uint8_t MicroBitAnimationServiceAnimationControlCharacteristicUUID[] = { 0xe9,0x5d,0xb8,0x4c,0x25,0x1d,0x47,0x0a,0xa0,0x62,0xfa,0x19,0x22,0xdf,0xa9,0xa8 };