BLE ADV Gateway, converts advertisement to proper JSON serial output
Dependencies: BLE_API mbed mbedtls nRF51822
main.cpp
- Committer:
- andresag
- Date:
- 2016-01-12
- Revision:
- 7:0a8bbb6dea16
- Parent:
- 5:f4d74a8cad43
- Child:
- 8:46c5e0bfab05
File content as of revision 7:0a8bbb6dea16:
/* mbed Microcontroller Library * Copyright (c) 2006-2015 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 "toolchain.h" #include "ble/BLE.h" #include "TMP_nrf51/TMP_nrf51.h" static Ticker ticker; static TMP_nrf51 tempSensor; static bool triggerTempValueUpdate = false; static DigitalOut alivenessLED(LED1, 1); struct ApplicationData_t { uint16_t applicationSpecificId; /* An ID used to identify temperature value in the manufacture specific AD data field */ TMP_nrf51::TempSensorValue_t tmpSensorValue; /* User defined application data */ } PACKED; void periodicCallback(void) { alivenessLED = !alivenessLED; /* 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 (where we should be able to block safely, if needed). */ triggerTempValueUpdate = true; } void setupApplicationData(ApplicationData_t &appData) { static const uint16_t APP_SPECIFIC_ID_TEST = 0xFEFE; appData.applicationSpecificId = APP_SPECIFIC_ID_TEST; appData.tmpSensorValue = tempSensor.get(); } /** * 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; } /* Setup advertising payload */ ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_THERMOMETER); ApplicationData_t appData; setupApplicationData(appData); ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, (uint8_t *)&appData, sizeof(ApplicationData_t)); /* Setup advertising parameters */ ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_NON_CONNECTABLE_UNDIRECTED); ble.gap().setAdvertisingInterval(500); ble.gap().startAdvertising(); } int main(void) { ticker.attach(periodicCallback, 2); /* trigger sensor polling every 2 seconds */ 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 (triggerTempValueUpdate) { /* Do blocking calls or whatever hardware-specific action is * necessary to poll the sensor. */ ApplicationData_t appData; setupApplicationData(appData); ble.gap().updateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, (uint8_t *) &appData, sizeof(ApplicationData_t)); triggerTempValueUpdate = false; } ble.waitForEvent(); } }