For example with Central/Peripheral: simple service to toggle a led via BLE
Dependencies: BLE_API mbed nRF51822
Fork of BLE_LED_PERIPHERAL by
main.cpp
- Committer:
- Alexgerni
- Date:
- 2017-08-08
- Revision:
- 0:8ae63d3cc188
File content as of revision 0:8ae63d3cc188:
/* 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 "LEDService.h" DigitalOut alivenessLED(p15, 0); DigitalOut actuatedLED(p16, 0); Serial pc(p5, p4); const static char DEVICE_NAME[] = "LED"; static const uint16_t uuid16_list[] = {LEDService::LED_SERVICE_UUID}; uint8_t ts = 1; LEDService *ledServicePtr; Ticker ticker; void periodicCallback(void) { alivenessLED = !alivenessLED; /* Do blinky on LED1 to indicate system aliveness. */ } /** * This callback allows the LEDService to receive updates to the ledState Characteristic. * * @param[in] params * Information about the characterisitc being updated. */ void onDataWrittenCallback(const GattWriteCallbackParams *params) { if ((params->handle == ledServicePtr->getValueHandle())) { actuatedLED = *(params->data); } } void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params) { BLE::Instance().gap().startAdvertising(); } /** * This function is called when the ble initialization process has failed */ 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); ble.gattServer().onDataWritten(onDataWrittenCallback); bool initialValueForLEDCharacteristic = false; ledServicePtr = new LEDService(ble, initialValueForLEDCharacteristic); /* 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) { pc.baud(115200); pc.printf("Initialization starts... \n"); ticker.attach(periodicCallback, ts); /* Blink LED every second */ 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 */ } pc.printf("Initialization finished \n"); while (true) { ble.waitForEvent(); } }