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 "ble/BLE.h"
00019 #include "LEDService.h"
00020 
00021 
00022 
00023 DigitalOut alivenessLED(p15, 0);
00024 DigitalOut actuatedLED(p16, 0);
00025 
00026 Serial pc(p5, p4);
00027 
00028 const static char     DEVICE_NAME[] = "LED";
00029 static const uint16_t uuid16_list[] = {LEDService::LED_SERVICE_UUID};
00030 
00031 uint8_t ts = 1;
00032 
00033 LEDService *ledServicePtr;
00034 
00035 Ticker ticker;
00036 
00037 void periodicCallback(void)
00038 {
00039     alivenessLED = !alivenessLED; /* Do blinky on LED1 to indicate system aliveness. */
00040 }
00041 
00042 /**
00043  * This callback allows the LEDService to receive updates to the ledState Characteristic.
00044  *
00045  * @param[in] params
00046  *     Information about the characterisitc being updated.
00047  */
00048 void onDataWrittenCallback(const GattWriteCallbackParams *params) 
00049 {
00050     if ((params->handle == ledServicePtr->getValueHandle())) {
00051         actuatedLED = *(params->data);
00052     }
00053 }
00054 
00055 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
00056 {
00057     BLE::Instance().gap().startAdvertising();
00058 }
00059 
00060 
00061 /**
00062  * This function is called when the ble initialization process has failed
00063  */
00064 void onBleInitError(BLE &ble, ble_error_t error)
00065 {
00066     /* Initialization error handling should go here */
00067 }
00068 
00069 /**
00070  * Callback triggered when the ble initialization process has finished
00071  */
00072 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
00073 {
00074     BLE&        ble   = params->ble;
00075     ble_error_t error = params->error;
00076 
00077     if (error != BLE_ERROR_NONE) {
00078         /* In case of error, forward the error handling to onBleInitError */
00079         onBleInitError(ble, error);
00080         return;
00081     }
00082 
00083     /* Ensure that it is the default instance of BLE */
00084     if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
00085         return;
00086     }
00087  
00088     ble.gap().onDisconnection(disconnectionCallback);
00089     ble.gattServer().onDataWritten(onDataWrittenCallback);
00090 
00091     bool initialValueForLEDCharacteristic = false;
00092     ledServicePtr = new LEDService(ble, initialValueForLEDCharacteristic);
00093 
00094     /* setup advertising */
00095     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
00096     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
00097     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
00098     ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
00099     ble.gap().setAdvertisingInterval(1000); /* 1000ms. */
00100     ble.gap().startAdvertising();
00101 }
00102 
00103 
00104 int main(void)
00105 {
00106     pc.baud(115200);
00107     pc.printf("Initialization starts... \n");
00108     ticker.attach(periodicCallback, ts); /* Blink LED every second */
00109     
00110     BLE &ble = BLE::Instance();
00111     ble.init(bleInitComplete);
00112 
00113     /* SpinWait for initialization to complete. This is necessary because the
00114      * BLE object is used in the main loop below. */
00115     while (ble.hasInitialized()  == false) { /* spin loop */ }
00116     pc.printf("Initialization finished \n");
00117 
00118     while (true) {
00119         
00120         ble.waitForEvent();
00121 
00122     }
00123 }