sppSend()

PROTOTYPE

#include <spp.h>

int sppSend(const void *src, int length);

DESCRIPTION

sppSend() sends a frame of user data. src points to a buffer that holds the data to send. length, the number of bytes to send, must be less than or equal to SPP_MAX_I_FIELD (defined in “spp.h”).

If a send buffer is free or non-blocking mode has been set, sppSend() returns immediately. Otherwise, the call blocks until a previously sent data frame is acknowledged (which frees a send buffer) or the link is reset.

If successful, sppSend() returns 0. Otherwise, it sets errno and returns -1.

ERROR CODES

SPP_LEN_TOO_BIG	length is greater than SPP_MAX_I_FIELD.
SPP_UNCONNECTED	The channel is unconnected.
SPP_UNINITIALIZED	The initialization routine sppInit() has not been called.
SPP_WOULD_BLOCK	The API is non-blocking and no send buffers are free.

EXAMPLE

      /*---------------------------------------------------------------*/
      /* Send max length frame, break if error.                        */
      /*---------------------------------------------------------------*/
      if (sppSend(sbuf, SPP_MAX_I_FIELD))
      {
        perror("sppSend()");
        break;
      }