串口驱动的一些结构体

termios 结构体

typedef unsigned char cc_t;
typedef unsigned int speed_t;
typedef unsigned int tcflag_t;

#define NCCS 19
struct termios {
 tcflag_t c_iflag;
 tcflag_t c_oflag;
 tcflag_t c_cflag;
 tcflag_t c_lflag;
 cc_t c_line;
 cc_t c_cc[NCCS];
};