source: azure_iot_hub_f767zi/trunk/asp_baseplatform/lwip/contrib-2.1.0/ports/unix/port/include/netif/sio.h@ 457

#ifndef SIO_UNIX_H
#define SIO_UNIX_H

#include "lwip/sys.h"
#include "lwip/netif.h"
#include "netif/fifo.h"
/*#include "netif/pppif.h"*/

struct sio_status_s {
        int fd;
        fifo_t myfifo;
};

/* BAUDRATE is defined in sio.c as it is implementation specific */
/** Baudrates */
typedef enum sioBaudrates {
        SIO_BAUD_9600,
        SIO_BAUD_19200,
        SIO_BAUD_38400,
        SIO_BAUD_57600, 
        SIO_BAUD_115200 
} sioBaudrates;

/**
* 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        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 );

/**
*       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