main.cpp

00001 /* mbed Microcontroller Library
00002  * Copyright (c) 2006-2013 ARM Limited
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00017 #include "mbed.h"
00018 #include "BLEDevice.h"
00019 #include "HeartRateService.h"
00020 #include "BatteryService.h"
00021 #include "DeviceInformationService.h"
00022 #include "Utils.h"
00023 
00024 BLEDevice  ble;
00025 DigitalOut led1(LED1);
00026 
00027 const static char     DEVICE_NAME[]        = "BlueNRG_HRM";
00028 static const uint16_t uuid16_list[]        = {GattService::UUID_HEART_RATE_SERVICE,
00029                                               GattService::UUID_BATTERY_SERVICE,
00030                                               GattService::UUID_DEVICE_INFORMATION_SERVICE};
00031 static volatile bool  triggerSensorPolling = false;
00032 
00033 void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason)
00034 {
00035     DEBUG("Disconnected!\n\r");
00036     DEBUG("Restarting the advertising process\n\r");
00037     ble.startAdvertising(); // restart advertising
00038 }
00039 
00040 void connectionCallback(Gap::Handle_t handle, const Gap::ConnectionParams_t *reason)
00041 {
00042     DEBUG("Connected\r\n");
00043 }
00044 
00045 void periodicCallback(void)
00046 {
00047     led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
00048 
00049     /* Note that the periodicCallback() executes in interrupt context, so it is safer to do
00050      * heavy-weight sensor polling from the main thread. */
00051     triggerSensorPolling = true;
00052 }
00053 
00054 int main(void)
00055 {
00056     led1 = 1;
00057     Ticker ticker;
00058     ticker.attach(periodicCallback, 1);
00059 
00060     DEBUG("Initialising \n\r");
00061     ble.init();
00062     ble.onDisconnection(disconnectionCallback);
00063     ble.onConnection(connectionCallback);
00064 
00065     /* Setup primary service. */
00066     uint8_t hrmCounter = 100;
00067     HeartRateService hrService(ble, hrmCounter, HeartRateService::LOCATION_FINGER);
00068 
00069     /* Setup auxiliary services. */
00070     BatteryService           battery(ble);
00071     DeviceInformationService deviceInfo(ble, "ST", "Nucleo", "SN1", "hw-rev1", "fw-rev1", "soft-rev1");
00072 
00073     /* Setup advertising. */
00074     ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
00075     ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
00076     ble.accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_HEART_RATE_SENSOR);
00077     ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
00078     ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
00079     ble.setAdvertisingInterval(1600); /* 1000ms; in multiples of 0.625ms. */
00080     ble.startAdvertising();
00081 
00082     while (true)
00083     {
00084         if (triggerSensorPolling)
00085         {
00086             triggerSensorPolling = false;
00087 
00088             /* Do blocking calls or whatever is necessary for sensor polling. */
00089             /* In our case, we simply update the dummy HRM measurement. */
00090             hrmCounter++;
00091             
00092             if (hrmCounter == 175)
00093             {
00094                 hrmCounter = 100;
00095             }
00096 
00097             hrService.updateHeartRate(hrmCounter);
00098         } 
00099         else
00100         {
00101             ble.waitForEvent();
00102         }
00103     }
00104 }