****************************************************************************/
           template <typename  T, const unsigned char buffer_size>
  class TBASE_UART: public TBASE_SERIAL_INTERFASE
  public:
              TBASE_UART (const unsigned char N_uart,  
                         const unsigned char tx_rx_yart,
                         const unsigned char mode_uart=0x86,  
                         const unsigned char baud_rate_uart=0x33 ):
                         TBASE_SERIAL_INTERFASE(buffer_size)  
.....
private:
   T data_read_buffer[buffer_size];

Пытаюсь инстанцировать
  TBASE_UART <unsigned char, 20> uart0  (0, 0X98);

#define BUFFER_SIZE 32
char buffer[BUFFER_SIZE];

template <typename  T, const unsigned char buffer_size>
class TBASE_UART
{
public:
    TBASE_UART (const unsigned char N_uart,  
        const unsigned char tx_rx_yart,
        const unsigned char mode_uart=0x86,  
        const unsigned char baud_rate_uart=0x33 ) {
        m_uart = N_uart;
        m_tx_rx_yart = tx_rx_yart;
    };

private:
    T data_read_buffer[buffer_size];
    unsigned char m_uart;
    unsigned char m_tx_rx_yart;
};