main.cpp

00001 /* mbed Microcontroller Library
00002  * Copyright (c) 2006-2014 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 "BLE.h"
00019 #include "BatteryService.h"
00020 
00021 DigitalOut led1(LED1, 1);
00022 Ticker t;
00023 BatteryService *batteryService = NULL;
00024 uint8_t batteryLevel = 50;
00025 
00026 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *disconnectionParams)
00027 {
00028     printf("Disconnected handle %u!\n\r", disconnectionParams->handle);
00029     printf("Restarting the advertising process\n\r");
00030     BLE::Instance(BLE::DEFAULT_INSTANCE).gap().startAdvertising(); // restart advertising
00031 }
00032 
00033 void blink(void)
00034 {
00035     led1 = !led1;
00036 }
00037 
00038 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
00039 {
00040     BLE &ble          = params->ble;
00041     ble_error_t error = params->error;
00042     Gap& gap = ble.gap();
00043 
00044     if (error != BLE_ERROR_NONE) {
00045         return;
00046     }
00047 
00048     gap.onDisconnection(disconnectionCallback);
00049 
00050     batteryService = new BatteryService(ble, batteryLevel);
00051 
00052     /* setup advertising */
00053     gap.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
00054     gap.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
00055     gap.setAdvertisingInterval(1000); /* 1000ms; in multiples of 0.625ms. */
00056     gap.startAdvertising();
00057 }
00058 
00059 int main(void)
00060 {
00061     t.attach(blink, 1.0f);
00062 
00063     printf("Initialising the nRF51822\n\r");
00064 
00065     BLE& ble = BLE::Instance(BLE::DEFAULT_INSTANCE);
00066     ble.init(bleInitComplete);
00067 
00068     /* SpinWait for initialization to complete. This is necessary because the
00069      * BLE object is used in the main loop below. */
00070     while (ble.hasInitialized()  == false) { /* spin loop */ }
00071 
00072     while (true) {
00073         ble.waitForEvent(); // this will return upon any system event (such as an interrupt or a ticker wakeup)
00074 
00075         // the magic battery processing
00076         batteryLevel++;
00077         if (batteryLevel > 100) {
00078             batteryLevel = 20;
00079         }
00080 
00081         batteryService->updateBatteryLevel(batteryLevel);
00082     }
00083 }