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 <events/mbed_events.h>
00018 #include <mbed.h>
00019 #include "ble/BLE.h"
00020 #include "LEDService.h"
00021 
00022 DigitalOut alivenessLED(LED1, 0);
00023 DigitalOut actuatedLED(LED2, 0);
00024 
00025 const static char     DEVICE_NAME[] = "LED";
00026 static const uint16_t uuid16_list[] = {LEDService::LED_SERVICE_UUID};
00027 
00028 static EventQueue eventQueue(/* event count */ 10 * EVENTS_EVENT_SIZE);
00029 
00030 LEDService *ledServicePtr;
00031 
00032 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
00033 {
00034     (void) params;
00035     BLE::Instance().gap().startAdvertising();
00036 }
00037 
00038 void blinkCallback(void)
00039 {
00040     alivenessLED = !alivenessLED; /* Do blinky on LED1 to indicate system aliveness. */
00041 }
00042 
00043 /**
00044  * This callback allows the LEDService to receive updates to the ledState Characteristic.
00045  *
00046  * @param[in] params
00047  *     Information about the characterisitc being updated.
00048  */
00049 void onDataWrittenCallback(const GattWriteCallbackParams *params) {
00050     if ((params->handle == ledServicePtr->getValueHandle()) && (params->len == 1)) {
00051         actuatedLED = *(params->data);
00052     }
00053 }
00054 
00055 /**
00056  * This function is called when the ble initialization process has failled
00057  */
00058 void onBleInitError(BLE &ble, ble_error_t error)
00059 {
00060     /* Initialization error handling should go here */
00061 }
00062 
00063 void printMacAddress()
00064 {
00065     /* Print out device MAC address to the console*/
00066     Gap::AddressType_t addr_type;
00067     Gap::Address_t address;
00068     BLE::Instance().gap().getAddress(&addr_type, address);
00069     printf("DEVICE MAC ADDRESS: ");
00070     for (int i = 5; i >= 1; i--){
00071         printf("%02x:", address[i]);
00072     }
00073     printf("%02x\r\n", address[0]);
00074 }
00075 
00076 /**
00077  * Callback triggered when the ble initialization process has finished
00078  */
00079 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
00080 {
00081     BLE&        ble   = params->ble;
00082     ble_error_t error = params->error;
00083 
00084     if (error != BLE_ERROR_NONE) {
00085         /* In case of error, forward the error handling to onBleInitError */
00086         onBleInitError(ble, error);
00087         return;
00088     }
00089 
00090     /* Ensure that it is the default instance of BLE */
00091     if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
00092         return;
00093     }
00094 
00095     ble.gap().onDisconnection(disconnectionCallback);
00096     ble.gattServer().onDataWritten(onDataWrittenCallback);
00097 
00098     bool initialValueForLEDCharacteristic = false;
00099     ledServicePtr = new LEDService(ble, initialValueForLEDCharacteristic);
00100 
00101     /* setup advertising */
00102     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
00103     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
00104     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
00105     ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
00106     ble.gap().setAdvertisingInterval(1000); /* 1000ms. */
00107     ble.gap().startAdvertising();
00108 
00109     printMacAddress();
00110 }
00111 
00112 void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context) {
00113     BLE &ble = BLE::Instance();
00114     eventQueue.call(Callback<void()>(&ble, &BLE::processEvents));
00115 }
00116 
00117 int main()
00118 {
00119     eventQueue.call_every(500, blinkCallback);
00120 
00121     BLE &ble = BLE::Instance();
00122     ble.onEventsToProcess(scheduleBleEventsProcessing);
00123     ble.init(bleInitComplete);
00124 
00125     eventQueue.dispatch_forever();
00126 
00127     return 0;
00128 }