Tests for BLE Uart Service
Fork of mbed-os-example-ble-HeartRate by
source/main.cpp
- Committer:
- Mathias Giacomuzzi
- Date:
- 2017-05-05
- Revision:
- 25:1bd8d5cc86ef
- Parent:
- 10:ac3615194d04
File content as of revision 25:1bd8d5cc86ef:
/* 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 <events/mbed_events.h> #include <mbed.h> #include "ble/BLE.h" #include "ble/Gap.h" #include "ble/services/UARTService.h" #define NEED_CONSOLE_OUTPUT 1 /* Set this if you need debug messages on the console; * it will have an impact on code-size and power consumption. */ #if NEED_CONSOLE_OUTPUT #define DEBUG(STR) { if (uartServicePtr) uartServicePtr->write(STR, strlen(STR)); } #else #define DEBUG(...) /* nothing */ #endif /* #if NEED_CONSOLE_OUTPUT */ DigitalOut led1(LED1, 1); const static char DEVICE_NAME[] = "BLE UART"; static uint8_t hrmCounter = 100; // init HRM to 100bps static UARTService *uartServicePtr; static EventQueue eventQueue( /* event count */ 16 * /* event size */ 32 ); void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params) { BLE::Instance().gap().startAdvertising(); // restart advertising } void updateSensorValue() { char buffer[5]; // Do blocking calls or whatever is necessary for sensor polling. // In our case, we simply update the HRM measurement. hrmCounter++; // 100 <= HRM bps <=175 if (hrmCounter == 175) { hrmCounter = 100; } sniprintf(buffer, 5, "%d\n\r", hrmCounter); DEBUG(buffer); printf("update hrmCounter: %s\n\r", buffer); } void periodicCallback(void) { led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */ if (BLE::Instance().getGapState().connected) { eventQueue.call(updateSensorValue); } } void onBleInitError(BLE &ble, ble_error_t error) { (void)ble; (void)error; /* Initialization error handling should go here */ } void bleInitComplete(BLE::InitializationCompleteCallbackContext *params) { BLE& ble = params->ble; ble_error_t error = params->error; if (error != BLE_ERROR_NONE) { onBleInitError(ble, error); return; } if (ble.getInstanceID() != BLE::DEFAULT_INSTANCE) { return; } ble.gap().onDisconnection(disconnectionCallback); /* Setup primary service. */ uartServicePtr = new UARTService(ble); /* Setup advertising. */ ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::SHORTENED_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS, (uint8_t *)UARTServiceUUID_reversed, sizeof(UARTServiceUUID_reversed)); ble.gap().setAdvertisingInterval(100); /* 100ms */ ble.gap().startAdvertising(); } void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context) { BLE &ble = BLE::Instance(); eventQueue.call(Callback<void()>(&ble, &BLE::processEvents)); } int main() { eventQueue.call_every(100, periodicCallback); BLE &ble = BLE::Instance(); ble.onEventsToProcess(scheduleBleEventsProcessing); ble.init(bleInitComplete); printf("Start up...\n\r"); eventQueue.dispatch_forever(); return 0; }