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 #include "a4960.h"
00021 
00022 DigitalOut alivenessLED(P0_6, 0);
00023 DigitalOut actuatedLED(P0_7, 0);
00024 a4960 motor;
00025 
00026 const static char     DEVICE_NAME[] = "LED";
00027 static const uint16_t uuid16_list[] = {LEDService::LED_SERVICE_UUID};
00028 
00029 LEDService *ledServicePtr;
00030 
00031 Ticker ticker;
00032 
00033 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
00034 {
00035     BLE::Instance().gap().startAdvertising();
00036 }
00037 
00038 void periodicCallback(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         if (*(params->data))
00053         {
00054             motor.write_run();
00055         }
00056         else
00057         {
00058             motor.write_brake();
00059         }
00060     }
00061 }
00062 
00063 /**
00064  * This function is called when the ble initialization process has failed
00065  */
00066 void onBleInitError(BLE &ble, ble_error_t error)
00067 {
00068     /* Initialization error handling should go here */
00069 }
00070 
00071 /**
00072  * Callback triggered when the ble initialization process has finished
00073  */
00074 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
00075 {
00076     BLE&        ble   = params->ble;
00077     ble_error_t error = params->error;
00078 
00079     if (error != BLE_ERROR_NONE) {
00080         /* In case of error, forward the error handling to onBleInitError */
00081         onBleInitError(ble, error);
00082         return;
00083     }
00084 
00085     /* Ensure that it is the default instance of BLE */
00086     if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
00087         return;
00088     }
00089  
00090     ble.gap().onDisconnection(disconnectionCallback);
00091     ble.gattServer().onDataWritten(onDataWrittenCallback);
00092 
00093     bool initialValueForLEDCharacteristic = false;
00094     ledServicePtr = new LEDService(ble, initialValueForLEDCharacteristic);
00095 
00096     /* setup advertising */
00097     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
00098     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
00099     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
00100     ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
00101     ble.gap().setAdvertisingInterval(1000); /* 1000ms. */
00102     ble.gap().startAdvertising();
00103 }
00104 
00105 int main(void)
00106 {
00107     ticker.attach(periodicCallback, 1); /* Blink LED every second */
00108 
00109     BLE &ble = BLE::Instance();
00110     ble.init(bleInitComplete);
00111 
00112     /* SpinWait for initialization to complete. This is necessary because the
00113      * BLE object is used in the main loop below. */
00114     while (ble.hasInitialized()  == false) { /* spin loop */ }
00115 
00116     while (true) {
00117         ble.waitForEvent();
00118     }
00119 }