tty.h

来自「基于ARM核的HMS7202」· C头文件 代码 · 共 81 行

#ifndef __tty_h
#define __tty_h

/* Register Offset */
#define SERIAL_THR		0
#define SERIAL_RBR		0
#define SERIAL_DLL		0
#define SERIAL_DLM		0x04
#define SERIAL_IER		0x04
#define SERIAL_IIR		0x08
#define SERIAL_FCR		0x08
#define SERIAL_LCR		0x0C
#define SERIAL_MCR		0x10
#define SERIAL_LSR		0x14
#define SERIAL_MSR		0x18
#define SERIAL_SCR		0x1c


#define LS_TSR_EMPTY        0x40
#define LS_THR_EMPTY        0x20
#define LS_RX_BREAK         0x10
#define LS_RX_FRAMING_ERR   0x08
#define LS_RX_PARITY_ERR    0x04
#define LS_RX_OVERRUN       0x02
#define LS_RX_DATA_READY    0x01

#define LS_RX_ERRORS        ( LS_RX_FRAMING_ERR | LS_RX_PARITY_ERR | LS_RX_OVERRUN )

typedef enum {
	tty_baud1200,
	tty_baud2400,
	tty_baud4800,
	tty_baud9600,
	tty_baud19200,
	tty_baud38400,
	tty_baud57600,
	tty_baud115200,
	tty_baud230400
} tty_baud_t;

typedef struct {
	int error;
#define TTY_NOERROR        0
#define TTY_ERROR_PARITY   1
#define TTY_ERROR_FRAME    2
#define TTY_ERROR_OVERRUN  3
#define TTY_ERROR_BI       4
	int status;
#define TTY_STATUS_DR      0x01
#define TTY_STATUS_TXEMPTY 0x02
} tty_stat_t;

typedef enum {TEXT_MODE, BINARY_MODE } ser_mode_t;

extern void serial_outb(int , unsigned char );
extern unsigned char serial_inb(int );
extern void ser_set_port(unsigned int, int);
extern int ser_get_port(void);
extern int ser_getbaud(void);
extern int ser_setbaud(int);
extern int ser_get_level(void);
extern void ser_putchar(char);
extern void ser_putc(char);
extern int ser_puts(char *);
extern char ser_getchar(void);
extern char ser_getchar_stat(tty_stat_t *);
extern char ser_getchar_timed(void);
extern int ser_getchar_nowait(char *);
extern int ser_read(char *, int);
extern int ser_getint(int *val);
extern void ser_settimeout(int);
extern int ser_istimeout(void);
extern void ser_enable_rcvIntrOnly(void);
extern void ser_diable_interrupt(void);
extern int ser_open(void);
extern void ser_close(void);
extern int ser_printf(const char *format, ...);
extern void ser_setmode(ser_mode_t );

#endif //__tty_h