STM32duinoBLE/src/BLETypedCharacteristic.h at main · stm32duino/STM32duinoBLE · GitHub

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This file is part of the ArduinoBLE library.

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Lesser General Public

License as published by the Free Software Foundation; either

version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public

License along with this library; if not, write to the Free Software

Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

#ifndef _BLE_TYPED_CHARACTERISTIC_H_

#define _BLE_TYPED_CHARACTERISTIC_H_

#include "BLECharacteristic.h"

template<typename T> class BLETypedCharacteristic : public BLECharacteristic

{

public:

BLETypedCharacteristic(const char* uuid, unsigned int permissions);

int writeValue(T value);

int setValue(T value) { return writeValue(value); }

T value(void);

int writeValueLE(T value);

int setValueLE(T value) { return writeValueLE(value); }

T valueLE(void);

int writeValueBE(T value);

int setValueBE(T value) { return writeValueBE(value); }

T valueBE(void);

private:

T byteSwap(T value);

};

template<typename T> BLETypedCharacteristic<T>::BLETypedCharacteristic(const char* uuid, unsigned int permissions) :

BLECharacteristic(uuid, permissions, sizeof(T), true)

{

T value;

memset(&value, 0x00, sizeof(value));

writeValue(value);

}

template<typename T> int BLETypedCharacteristic<T>::writeValue(T value)

{

return BLECharacteristic::writeValue((uint8_t*)&value, sizeof(T));

}

template<typename T> T BLETypedCharacteristic<T>::value()

{

T value;

memcpy(&value, (unsigned char*)BLECharacteristic::value(), BLECharacteristic::valueSize());

return value;

}

template<typename T> int BLETypedCharacteristic<T>::writeValueLE(T value)

{

return writeValue(value);

}

template<typename T> T BLETypedCharacteristic<T>::valueLE()

{

return value();

}

template<typename T> int BLETypedCharacteristic<T>::writeValueBE(T value)

{

return writeValue(byteSwap(value));

}

template<typename T> T BLETypedCharacteristic<T>::valueBE()

{

return byteSwap(value());

}

template<typename T> T BLETypedCharacteristic<T>::byteSwap(T value)

{

T result;

unsigned char* src = (unsigned char*)&value;

unsigned char* dst = (unsigned char*)&result;

for (int i = 0; i < sizeof(T); i++) {

dst[i] = src[sizeof(T) - i - 1];

}

return result;

}

#endif

STM32duinoBLE/src/BLETypedCharacteristic.h at main · stm32duino/STM32duinoBLE · GitHub

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