rajarajan elango
/
mbed-os-example-ble-LED
Testing of Onboard Led using nRF control panel app in Android device.
source/main.cpp
- Committer:
- mbed_official
- Date:
- 2019-08-15
- Revision:
- 79:4c62b7c6081a
- Parent:
- 74:51fde11a771f
File content as of revision 79:4c62b7c6081a:
/* mbed Microcontroller Library * Copyright (c) 2006-2013 ARM Limited * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include <events/mbed_events.h> #include <mbed.h> #include "ble/BLE.h" #include "LEDService.h" #include "pretty_printer.h" const static char DEVICE_NAME[] = "LED"; static EventQueue event_queue(/* event count */ 10 * EVENTS_EVENT_SIZE); class LEDDemo : ble::Gap::EventHandler { public: LEDDemo(BLE &ble, events::EventQueue &event_queue) : _ble(ble), _event_queue(event_queue), _alive_led(LED1, 1), _actuated_led(LED2, 0), _led_uuid(LEDService::LED_SERVICE_UUID), _led_service(NULL), _adv_data_builder(_adv_buffer) { } ~LEDDemo() { delete _led_service; } void start() { _ble.gap().setEventHandler(this); _ble.init(this, &LEDDemo::on_init_complete); _event_queue.call_every(500, this, &LEDDemo::blink); _event_queue.dispatch_forever(); } private: /** Callback triggered when the ble initialization process has finished */ void on_init_complete(BLE::InitializationCompleteCallbackContext *params) { if (params->error != BLE_ERROR_NONE) { printf("Ble initialization failed."); return; } _led_service = new LEDService(_ble, false); _ble.gattServer().onDataWritten(this, &LEDDemo::on_data_written); print_mac_address(); start_advertising(); } void start_advertising() { /* Create advertising parameters and payload */ ble::AdvertisingParameters adv_parameters( ble::advertising_type_t::CONNECTABLE_UNDIRECTED, ble::adv_interval_t(ble::millisecond_t(1000)) ); _adv_data_builder.setFlags(); _adv_data_builder.setLocalServiceList(mbed::make_Span(&_led_uuid, 1)); _adv_data_builder.setName(DEVICE_NAME); /* Setup advertising */ ble_error_t error = _ble.gap().setAdvertisingParameters( ble::LEGACY_ADVERTISING_HANDLE, adv_parameters ); if (error) { printf("_ble.gap().setAdvertisingParameters() failed\r\n"); return; } error = _ble.gap().setAdvertisingPayload( ble::LEGACY_ADVERTISING_HANDLE, _adv_data_builder.getAdvertisingData() ); if (error) { printf("_ble.gap().setAdvertisingPayload() failed\r\n"); return; } /* Start advertising */ error = _ble.gap().startAdvertising(ble::LEGACY_ADVERTISING_HANDLE); if (error) { printf("_ble.gap().startAdvertising() failed\r\n"); return; } } /** * This callback allows the LEDService to receive updates to the ledState Characteristic. * * @param[in] params Information about the characterisitc being updated. */ void on_data_written(const GattWriteCallbackParams *params) { if ((params->handle == _led_service->getValueHandle()) && (params->len == 1)) { _actuated_led = *(params->data); } } void blink() { _alive_led = !_alive_led; } private: /* Event handler */ void onDisconnectionComplete(const ble::DisconnectionCompleteEvent&) { _ble.gap().startAdvertising(ble::LEGACY_ADVERTISING_HANDLE); } private: BLE &_ble; events::EventQueue &_event_queue; DigitalOut _alive_led; DigitalOut _actuated_led; UUID _led_uuid; LEDService *_led_service; uint8_t _adv_buffer[ble::LEGACY_ADVERTISING_MAX_SIZE]; ble::AdvertisingDataBuilder _adv_data_builder; }; /** Schedule processing of events from the BLE middleware in the event queue. */ void schedule_ble_events(BLE::OnEventsToProcessCallbackContext *context) { event_queue.call(Callback<void()>(&context->ble, &BLE::processEvents)); } int main() { BLE &ble = BLE::Instance(); ble.onEventsToProcess(schedule_ble_events); LEDDemo demo(ble, event_queue); demo.start(); return 0; }