Kontron KTAM3874-pITX - Manual (Page 91)

KTD-S0057-I Page 87 Linux® Programming Examples (DebianTM)
KTAM3874/pITX Software Guide
if (rs485_outgoing_msg ())
{
rts_as_gpio_close (); close (fd);
printf ("Error during transmit operation!\n\n");
return -1;
}
if (rs485_incoming_msg ())
{
rts_as_gpio_close (); close (fd);
printf ("Error during receive operation!\n\n");
return -1;
}
rts_as_gpio_close ();
close (fd);
printf ("RS485 test successfully finished.\n\n");
return 0;
}