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 #include <events/mbed_events.h>
00017 
00018 #include <mbed.h>
00019 #include "ble/BLE.h"
00020 #include "ble/Gap.h"
00021 #include "ButtonService.h"
00022 
00023 DigitalOut  led1(LED1, 1);
00024 InterruptIn button(BLE_BUTTON_PIN_NAME);
00025 
00026 static EventQueue eventQueue(/* event count */ 10 * EVENTS_EVENT_SIZE);
00027 
00028 const static char     DEVICE_NAME[] = "Button";
00029 static const uint16_t uuid16_list[] = {ButtonService::BUTTON_SERVICE_UUID};
00030 
00031 ButtonService *buttonServicePtr;
00032 
00033 void buttonPressedCallback(void)
00034 {
00035     eventQueue.call(Callback<void(bool)>(buttonServicePtr, &ButtonService::updateButtonState), true);
00036 }
00037 
00038 void buttonReleasedCallback(void)
00039 {
00040     eventQueue.call(Callback<void(bool)>(buttonServicePtr, &ButtonService::updateButtonState), false);
00041 }
00042 
00043 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
00044 {
00045     BLE::Instance().gap().startAdvertising(); // restart advertising
00046 }
00047 
00048 void blinkCallback(void)
00049 {
00050     led1 = !led1; /* Do blinky on LED1 to indicate system aliveness. */
00051 }
00052 
00053 void onBleInitError(BLE &ble, ble_error_t error)
00054 {
00055     /* Initialization error handling should go here */
00056 }
00057 
00058 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
00059 {
00060     BLE&        ble   = params->ble;
00061     ble_error_t error = params->error;
00062 
00063     if (error != BLE_ERROR_NONE) {
00064         /* In case of error, forward the error handling to onBleInitError */
00065         onBleInitError(ble, error);
00066         return;
00067     }
00068 
00069     /* Ensure that it is the default instance of BLE */
00070     if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
00071         return;
00072     }
00073 
00074     ble.gap().onDisconnection(disconnectionCallback);
00075 
00076     button.fall(buttonPressedCallback);
00077     button.rise(buttonReleasedCallback);
00078 
00079     /* Setup primary service. */
00080     buttonServicePtr = new ButtonService(ble, false /* initial value for button pressed */);
00081 
00082     /* setup advertising */
00083     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
00084     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
00085     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
00086     ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
00087     ble.gap().setAdvertisingInterval(1000); /* 1000ms. */
00088     ble.gap().startAdvertising();
00089 }
00090 
00091 void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context) {
00092     BLE &ble = BLE::Instance();
00093     eventQueue.call(Callback<void()>(&ble, &BLE::processEvents));
00094 }
00095 
00096 int main()
00097 {
00098     eventQueue.call_every(500, blinkCallback);
00099 
00100     BLE &ble = BLE::Instance();
00101     ble.onEventsToProcess(scheduleBleEventsProcessing);
00102     ble.init(bleInitComplete);
00103 
00104     eventQueue.dispatch_forever();
00105 
00106     return 0;
00107 }