Ktam3874/pitx software guide – Kontron KTAM3874-pITX User Manual
Page 269
KTD-S0057-I
Page 265 Linux® Programming Examples (DebianTM)
KTAM3874/pITX Software Guide
while (read (fifo_rd, buff_rd, RD_SIZE) > 0)
{
if (!strncasecmp (buff_rd, CMD_WDIO, CMD_SIZE))
{
if (!parse_wdio (buff_rd))
write
(fifo_wr,
ACK_STR,
ACK_SIZE);
else
write
(fifo_wr,
NAK_STR,
NAK_SIZE);
}
if (!strncasecmp (buff_rd, CMD_GPIO, CMD_SIZE))
{
if (!parse_gpio (buff_rd, &value))
{
if (value != -1)
{
sprintf
(buff_wr,
DATA_STR,
value);
write
(fifo_wr,
buff_wr,
strlen
(buff_wr));
}
else
write
(fifo_wr,
ACK_STR,
ACK_SIZE);
}
else
write
(fifo_wr,
NAK_STR,
NAK_SIZE);
}
if (!strncasecmp (buff_rd, CMD_EXIT, CMD_SIZE))
break;
memset (buff_rd, 0, RD_SIZE);
}
close
(fifo_rd);
unlink
(root_rd);
close
(fifo_wr);
unlink
(root_wr);
umask
(oldmask);
return
0;
}
and finally the sourcecode of the client application 'client.c':
/* Client application
* Copyright (c) 2014 Kontron Technology A/S
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License. */
#include
#include
#include
#include
#include
#include