Sample BLE thermometer profile for nRF51-DK with sensing from LM35
Dependencies: BLE_API mbed nRF51822 X_NUCLEO_IDB0XA1
Fork of BLE_Thermometer by
main.cpp
- Committer:
- gkroussos
- Date:
- 2018-05-31
- Revision:
- 19:a1ab85d6a0d5
- Parent:
- 18:86ccdd5a2bfd
File content as of revision 19:a1ab85d6a0d5:
/* 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 "ble/services/HealthThermometerService.h" AnalogIn LM35(P0_2); DigitalOut led1(LED1); static HealthThermometerService *thermometerServicePtr; static const char DEVICE_NAME[] = "Therm"; static const uint16_t uuid16_list[] = {GattService::UUID_HEALTH_THERMOMETER_SERVICE}; static volatile bool triggerSensorPolling = false; static float currentTemperature = 39.6; /* Restart Advertising on disconnection*/ void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params) { BLE::Instance().gap().startAdvertising(); } void periodicCallback(void) { led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */ /* Note that the periodicCallback() executes in interrupt context, so it is safer to do * heavy-weight sensor polling from the main thread. */ triggerSensorPolling = true; } /** * This function is called when the ble initialization process has failed */ void onBleInitError(BLE &ble, ble_error_t error) { /* Avoid compiler warnings */ (void) ble; (void) 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. */ thermometerServicePtr = new HealthThermometerService(ble, currentTemperature, HealthThermometerService::LOCATION_EAR); /* 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::THERMOMETER_EAR); 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); 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 (triggerSensorPolling && ble.gap().getState().connected) { triggerSensorPolling = false; /* In our case, we simply update the dummy temperature measurement. */ /* float currentTemperature = ((LM35*3.3)-0.600)*100.0; */ //currentTemperature += 0.1; currentTemperature = ((LM35*3.3)-0.600)*100.0; thermometerServicePtr->updateTemperature(currentTemperature); } else { ble.waitForEvent(); } } }