A template for applications where some small amount of data needs to be notified to a phone app over BLE. It is a good starting point for notifications.
Dependencies: BLE_API mbed nRF51822
Fork of BLE_Button by
main.cpp
- Committer:
- andresag
- Date:
- 2015-12-30
- Revision:
- 10:7943b5c1117a
- Parent:
- 9:0f6951db24f1
- Child:
- 11:fd1cf9dbf3a4
File content as of revision 10:7943b5c1117a:
/* 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 "mbed.h" #include "ble/BLE.h" #include "ButtonService.h" DigitalOut led1(LED1); InterruptIn button(BUTTON1); const static char DEVICE_NAME[] = "Button"; static const uint16_t uuid16_list[] = {ButtonService::BUTTON_SERVICE_UUID}; enum { RELEASED = 0, PRESSED, IDLE }; static uint8_t buttonState = IDLE; static ButtonService *buttonServicePtr; void buttonPressedCallback(void) { /* Note that the buttonPressedCallback() executes in interrupt context, so it is safer to access * BLE device API from the main thread. */ buttonState = PRESSED; } void buttonReleasedCallback(void) { /* Note that the buttonReleasedCallback() executes in interrupt context, so it is safer to access * BLE device API from the main thread. */ buttonState = RELEASED; } void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params) { BLE::Instance().gap().startAdvertising(); } void periodicCallback(void) { led1 = !led1; /* Do blinky on LED1 to indicate system aliveness. */ } /** * This function is called when the ble initialization process has failled */ void onBleInitError(BLE &ble, ble_error_t error) { /* Initialization error handling should go here */ } /** * Callback triggered when the ble initialization process has finished */ void bleInitComplete(BLE::InitializationCompleteCallbackContext *params) { BLE& ble = params->ble; ble_error_t error = params->error; if (error != BLE_ERROR_NONE) { /* In case of error, forward the error handling to onBleInitError */ onBleInitError(ble, error); return; } /* Ensure that it is the default instance of BLE */ if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) { return; } ble.gap().onDisconnection(disconnectionCallback); /* Setup primary service */ buttonServicePtr = new ButtonService(ble, false /* initial value for button pressed */); /* setup advertising */ ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); ble.gap().setAdvertisingInterval(1000); /* 1000ms. */ ble.gap().startAdvertising(); } int main(void) { led1 = 1; Ticker ticker; ticker.attach(periodicCallback, 1); button.fall(buttonPressedCallback); button.rise(buttonReleasedCallback); BLE &ble = BLE::Instance(); ble.init(bleInitComplete); /* SpinWait for initialization to complete. This is necessary because the * BLE object is used in the main loop below. */ while (ble.hasInitialized() == false) { /* spin loop */ } while (true) { if (buttonState != IDLE) { buttonServicePtr->updateButtonState(buttonState); buttonState = IDLE; } ble.waitForEvent(); } }