#ifndef __USART_H
#define __USART_H
//-----------------------------------------------------------------------------

#include "typedefs.h"
#include "application.h"
#include "num_conversion.h"

//-----------------------------------------------------------------------------
#define USART_RX_BUFFER_SIZE 32 // Receive buffer size
#define USART_TX_BUFFER_SIZE 5 // Receive buffer size. MUST not be larger 255

#define USART_BAUDRATE 9600 // USART baudrate original
#define USART_USE_TX // Transmitter used?
#define USART_USE_RX // Receiver used?
#define USART_USE_RX_IRQ // RX interrupt used?
//#define USART_USE_UPPERCASE // Convert received chars to uppercase?
//-----------------------------------------------------------------------------

#define USART_CHAR_BS 8
#define USART_CHAR_LF 10
#define USART_CHAR_CR 13
#define USART_CHAR_ESC 27
#define USART_CHAR_SPC 32
//-----------------------------------------------------------------------------

#define USART_SET_BAUDRATE(br) (UBRRH = (U08)((((U32)F_CPU) /\
                                ((U32)br * 16) - 1) >> 8),\
                                UBRRL = (U08)(((U32)F_CPU) /\
                                ((U32)br * 16) - 1))
//-----------------------------------------------------------------------------

// USART global variables
	extern U08 usart_rx_buffer[USART_RX_BUFFER_SIZE];
	extern U08 usart_tx_buffer[USART_TX_BUFFER_SIZE];
	extern U08 usart_received_chars;

	extern U08 usart_tx_buffer_index;
  	extern U08 usart_last_char; 					// last received char

// USART FLAGS
	extern bool usart_tx_buffer_overflow;	// true if usart_tx_buffer was full.



extern bool usart_tx_buffer_overflow;
extern U08 usart_tx_buffer_index;
extern U08 usart_tx_buffer[USART_TX_BUFFER_SIZE];

#ifdef USART_USE_RX_IRQ
  extern U08 usart_rx_buffer[];
  //U08 *usart_rx_buffer_ptr = &usart_rx_buffer[0];
  extern U08 usart_received_chars;
  extern volatile BOOL usart_rx_ready;
#endif

//-----------------------------------------------------------------------------

void usart_init(void);
void usart_write_char(U08 data);
void usart_write_crlf(void);
void usart_write_str(pU08 str);
void usart_writeln_str(pU08 str);
void usart_write_flash_str(fpU08 str);
void usart_writeln_flash_str(fpU08 str);
void usart_write_U08(U08 value,U08 digits);
void usart_write_S08(S08 value,U08 digits);
void usart_write_U08_hex(U08 value);
void usart_write_U08_bin(U08 value);
void usart_write_U16(U16 value,U08 digits);
void usart_write_S16(S16 value,U08 digits);
void usart_write_U16_hex(U16 value);
void usart_write_U32(U32 value,U08 digits);
void usart_write_S32(S32 value,U08 digits);
void usart_write_U32_hex(U32 value);
void usart_write_float(float value,U08 decimals,U08 digits);
//-----------------------------------------------------------------------------

#endif