BroadcasterService.h

00001 #ifndef __BLE_BROADCASTER_SERVICE_H__
00002 #define __BLE_BROADCASTER_SERVICE_H__
00003 
00004 #include "BLEDevice.h"
00005 using namespace std;
00006 //http://ble-intros.readthedocs.org/en/latest/InDepth/BLEInDepth/
00007 
00008 
00009 /**
00010 * @class BroadcasterService
00011 * @brief Based heavily on the BLE Battery Service, the aim is to send key, pair values <br>. 
00012 * UPDATE: Should now be sending 8-byte string - 4 bytes for Type, 4 for command
00013 */
00014 class BroadcasterService
00015 {
00016 public:
00017 
00018     enum {
00019         ERROR_SERVER_DISCONNECTION = 0x1111,
00020         ERROR_ELECTRONIC_DSICONNECTION = 0x1222,
00021         ERROR_GENERIC = 0x1234,
00022     };
00023     
00024     const static uint16_t BROADCAST_SERVICE_UUID            = 0x2A67;
00025     const static uint16_t BROADCAST_CHARACTERISTIC_UUID     = 0x1817;
00026     const static uint16_t ERROR_CHARACTERISTIC_UUID     = 0x1818;
00027     
00028     BroadcasterService(BLEDevice &_ble) :
00029         ble(_ble),
00030         //define characteristics
00031         broadcasterCharacteristic(BROADCAST_CHARACTERISTIC_UUID, command, sizeof(command), sizeof(command),
00032                                   GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ |
00033                                   GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY),
00034         errorCharacteristic(ERROR_CHARACTERISTIC_UUID, &errorCode, sizeof(errorCode), sizeof(errorCode),
00035                                   GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ |
00036                                   GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY) {
00037                
00038         static bool serviceAdded = false; /* We should only ever need to add the service once. */
00039         if (!serviceAdded) {
00040         
00041             GattCharacteristic *charTable[] = {&broadcasterCharacteristic, &errorCharacteristic};
00042             GattService         broadcasterService(BroadcasterService::BROADCAST_SERVICE_UUID, charTable, 
00043                                     sizeof(charTable) / sizeof(GattCharacteristic *));
00044     
00045             ble.addService(broadcasterService);
00046             serviceAdded = true;
00047         }
00048     }
00049 
00050     /**
00051      * @brief
00052      *
00053      * @param
00054      */
00055     void sendCommand (uint8_t _newCommand[8]) {
00056         memcpy(&command, &_newCommand, sizeof(_newCommand));
00057         
00058         ble.updateCharacteristicValue(broadcasterCharacteristic.getValueAttribute().getHandle(), command, sizeof(command), false);
00059     }
00060     
00061     void registerError(uint8_t _errorCode) {
00062         errorCode = _errorCode;
00063         
00064         ble.updateCharacteristicValue(errorCharacteristic.getValueAttribute().getHandle(), &errorCode, sizeof(errorCode), false);
00065     }
00066 
00067 private:
00068     BLEDevice               &ble;
00069     uint8_t                 command[8];    
00070     uint8_t                 errorCode;   
00071     GattCharacteristic      broadcasterCharacteristic;
00072     GattCharacteristic      errorCharacteristic;
00073 };
00074 
00075 #endif