lwip-contrib-mac/ports/unix/include/netif/sio.h

83 lines
2.4 KiB
C

#ifndef SIO_H
#define SIO_H
#include "lwip/sys.h"
#include "lwip/netif.h"
#include "netif/fifo.h"
/*#include "netif/pppif.h"*/
/* BAUDRATE is defined in sio.c as it is implementation specific */
typedef struct sio_status_t {
int fd;
fifo_t myfifo;
} sio_status_t;
/** Baudrates */
typedef enum sioBaudrates {
SIO_BAUD_9600,
SIO_BAUD_19200,
SIO_BAUD_38400,
SIO_BAUD_57600,
SIO_BAUD_115200
} sioBaudrates;
/**
* Read a char from incoming data stream, this call blocks until data has arrived
* @param siostat siostatus struct, contains sio instance data, given by sio_open
* @return char read from input stream
*/
u8_t sio_recv( sio_status_t * siostat );
/**
* Poll for a new character from incoming data stream
* @param siostat siostatus struct, contains sio instance data, given by sio_open
* @return char read from input stream, or < 0 if no char was available
*/
s16_t sio_poll(sio_status_t * siostat);
/**
* Parse incoming characters until a string str is recieved, blocking call
* @param str zero terminated string to expect
* @param siostat siostatus struct, contains sio instance data, given by sio_open
*/
void sio_expect_string(u8_t *str, sio_status_t * siostat);
/**
* Write a char to output data stream
* @param c char to write to output stream
* @param siostat siostatus struct, contains sio instance data, given by sio_open
*/
void sio_send( u8_t c, sio_status_t * siostat );
/**
* Write a char to output data stream
* @param str pointer to a zero terminated string
* @param siostat siostatus struct, contains sio instance data, given by sio_open
*/
void sio_send_string(u8_t *str, sio_status_t * siostat);
/**
* Flush outbuffer (send everything in buffer now), useful if some layer below is
* holding on to data, waitng to fill a buffer
* @param siostat siostatus struct, contains sio instance data, given by sio_open
*/
void sio_flush( sio_status_t * siostat );
/**
* Open serial port entry point from serial protocol (slipif, pppif)
* @param devnum the device number to use, i.e. ttySx, comx:, etc. there x = devnum
* @return siostatus struct, contains sio instance data, use when calling sio functions
*/
sio_status_t * sio_open( int devnum );
/**
* Change baudrate of port, may close and reopen port
* @param baud new baudrate
* @param siostat siostatus struct, contains sio instance data, given by sio_open
*/
void sio_change_baud( sioBaudrates baud, sio_status_t * siostat );
#endif