uart.h

ATMEGA128的BOOTLOADER

/*****************************************************
Project : UART
Version : 1.0
Date    : 2005-7-13
Author  : Liu.Qian
Company : HuanXiang GCT
Comments: Creat
*****************************************************/
#ifndef _UART_
#define _UART_

#if defined UART0
#define SIG_USARTx_RECV SIG_USART0_RECV
#define UCSRxA UCSR0A
#define UDRx UDR0
#define SIG_USARTx_TRANS SIG_USART0_TRANS
#else
#define SIG_USARTx_RECV SIG_USART1_RECV
#define UCSRxA UCSR1A
#define UDRx UDR1
#define SIG_USARTx_TRANS SIG_USART1_TRANS
#endif

#define RX_BUFFER_SIZE 32
#define TX_BUFFER_SIZE 32

extern volatile uint8_t rx_buffer[RX_BUFFER_SIZE];

#if RX_BUFFER_SIZE<256
extern volatile uint8_t rx_counter;
#else
extern volatile uint16_t rx_counter;
#endif

extern volatile uint8_t tx_buffer[TX_BUFFER_SIZE];

#if TX_BUFFER_SIZE<256
extern volatile uint8_t tx_counter;
#else
extern volatile uint16_t tx_counter;
#endif

extern uint8_t Ugetchar(void);
extern void Uputchar(uint8_t);
extern void putstrf(const prog_uint8_t *);
extern void putstr(uint8_t *);
extern void flush(void);

#endif

// end of file