urg_serial.h

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#ifndef URG_SERIAL_H
#define URG_SERIAL_H
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include "urg_c/urg_detect_os.h"
 
#if defined(URG_WINDOWS_OS)
#include <windows.h>
#elif defined(ANDROID)
#include <termios.h>
#define tcdrain(fd) ioctl(fd, TCSBRK, 1) 
#else
#include <termios.h>
#include <sys/select.h>
#endif
#include "urg_ring_buffer.h"
 
 
enum {
    RING_BUFFER_SIZE_SHIFT = 7,
    RING_BUFFER_SIZE = 1 << RING_BUFFER_SIZE_SHIFT,
 
    ERROR_MESSAGE_SIZE = 256,
};
 
 
typedef struct
{
#if defined(URG_WINDOWS_OS)
    HANDLE hCom;                
    int current_timeout;        
#else
    int fd;                     
    struct termios sio;         
#endif
 
    ring_buffer_t ring;         
    char buffer[RING_BUFFER_SIZE]; 
    char has_last_ch;          
    char last_ch;              
} urg_serial_t;
 
 
extern int serial_open(urg_serial_t *serial, const char *device, long baudrate);
 
 
extern void serial_close(urg_serial_t *serial);
 
 
extern int serial_set_baudrate(urg_serial_t *serial, long baudrate);
 
 
extern int serial_write(urg_serial_t *serial, const char *data, int size);
 
 
extern int serial_read(urg_serial_t *serial,
                       char *data, int max_size, int timeout);
 
 
extern int serial_readline(urg_serial_t *serial,
                           char *data, int max_size, int timeout);
 
 
extern int serial_error(urg_serial_t *serial,
                        char *error_message, int max_size);
 
#ifdef __cplusplus
}
#endif
 
#endif /* !URG_SERIAL_H */