Duy tran / Mbed OS BLE_Bike

* This is the code for "BLE Device for motorbike". The device is attached on any bike at will. * User can control 2 switches and these switches can control anything that user wants ie: turn on * the bike, turn on the alarm system of the bike, turn on the light... * Temperature sensor is also included in the device. User can view the temperature when he/she gets * near the bike. * For the next version, humidity and air quality sensor are also added.

Dependencies:   DHT22

source/bike_service.h

Committer:
DuyLionTran
Date:
2017-11-02
Revision:
0:ee08053aaf57
Child:
1:8db3d642a94f

File content as of revision 0:ee08053aaf57:

#ifndef __BLE_BIKE_SERVICE_H__
#define __BLE_BIKE_SERVICE_H__

#include "ble/BLE.h"

/**
  * @class bikeService
  * @brief This is a customized service for a device controlling the bike via BLE
  */
class bikeService {   
public:   
    const static uint16_t BIKE_SERVICE_UUID                   = 0xA580;
    const static uint16_t SWITCH_CONTROL_UUID                 = 0xA581;   
     
/** 
  * @param[in] _ble BLE object for the underlying controller.
  * @param[in] currentTemperature The temperature measured from the sensor.
  */

    bikeService(BLEDevice &_ble, bool initialSwitchState, uint16_t temperature) :
        ble(_ble), 
        switchCharacteristic(SWITCH_CONTROL_UUID, &initialSwitchState),
        temperatureCharacteristic(GattCharacteristic::UUID_TEMPERATURE_MEASUREMENT_CHAR, &temperature, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY)        
    {
            /* Create and add the service */    
            GattCharacteristic *charTable[] = {&switchCharacteristic, &temperatureCharacteristic};
            GattService         bikeService(BIKE_SERVICE_UUID, charTable, sizeof(charTable) / sizeof(GattCharacteristic *));
            ble.gattServer().addService(bikeService);
    }

    GattAttribute::Handle_t getValueHandle() const {
        return switchCharacteristic.getValueHandle();
    }
    
    
    void updateTemperatureCharacteristic(uint16_t newTemperatureVal)
    {
        temperature = newTemperatureVal;
        ble.gattServer().write(temperatureCharacteristic.getValueHandle(), (uint8_t *) &temperature, sizeof(uint16_t));
    }

private:
    uint16_t temperature;

    BLE                                  &ble;
    ReadWriteGattCharacteristic<bool>     switchCharacteristic;
    ReadOnlyGattCharacteristic<uint16_t>  temperatureCharacteristic;
};

#endif /* __BLE_BIKE_SERVICE_H__ */