File content as of revision 79:8ea0d8374ab6:

/* mbed Microcontroller Library
 * Copyright (c) 2006-2013 ARM Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef __BLE_LED_SERVICE_H__
#define __BLE_LED_SERVICE_H__

typedef struct  {
        uint16_t integer;
        uint8_t decimal;
    }WeightType_t;
    
class LEDService {
public:
    const static uint16_t LED_SERVICE_UUID              = 0xA000;
    const static uint16_t LED_STATE_CHARACTERISTIC_UUID = 0xA001;

    LEDService(BLEDevice &_ble, WeightType_t initialValueForLEDCharacteristic) :
        ble(_ble), ledState(LED_STATE_CHARACTERISTIC_UUID, &initialValueForLEDCharacteristic)
    {
        GattCharacteristic *charTable[] = {&ledState};
        GattService         ledService(LED_SERVICE_UUID, charTable, sizeof(charTable) / sizeof(GattCharacteristic *));

        ble.gattServer().addService(ledService);
    }

//    GattAttribute::Handle_t getValueHandle() const
//    {
//        return ledState.getValueHandle();
//    }
    void updateWeight(float newValue)
    {
//        float newWeight = (float) newValue;
//        ble.gattServer().write(ledState.getValueHandle(), 
//        (uint8_t *)&newWeight, sizeof(float));
        WeightType_t *weight;
        weight->integer = (uint16_t)newValue;
        float f_decimal = newValue - weight->integer;
        weight->decimal = (uint8_t)(f_decimal* 100.0f);
        ble.gattServer().write(ledState.getValueHandle(), 
        (uint8_t *)weight, sizeof(WeightType_t));
    }
    
private:
    BLEDevice                         &ble;
    ReadOnlyGattCharacteristic<WeightType_t> ledState;
};

#endif /* #ifndef __BLE_LED_SERVICE_H__ */