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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org>
*
*
* 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, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <stdint.h>
#include <termios.h>
#include "csr.h"
static uint16_t seqnum = 0x0000;
static int fd = -1;
int csr_open_bcsp(char *device)
{
struct termios ti;
if (!device)
device = "/dev/ttyS0";
fd = open(device, O_RDWR | O_NOCTTY);
if (fd < 0) {
fprintf(stderr, "Can't open serial port: %s (%d)\n",
strerror(errno), errno);
return -1;
}
tcflush(fd, TCIOFLUSH);
if (tcgetattr(fd, &ti) < 0) {
fprintf(stderr, "Can't get port settings: %s (%d)\n",
strerror(errno), errno);
close(fd);
return -1;
}
cfmakeraw(&ti);
ti.c_cflag |= CLOCAL;
ti.c_cflag &= ~CRTSCTS;
ti.c_cflag |= PARENB;
ti.c_cflag &= ~PARODD;
ti.c_cflag &= ~CSIZE;
ti.c_cflag |= CS8;
ti.c_cflag &= ~CSTOPB;
ti.c_cc[VMIN] = 1;
ti.c_cc[VTIME] = 0;
cfsetospeed(&ti, B38400);
if (tcsetattr(fd, TCSANOW, &ti) < 0) {
fprintf(stderr, "Can't change port settings: %s (%d)\n",
strerror(errno), errno);
close(fd);
return -1;
}
tcflush(fd, TCIOFLUSH);
if (fcntl(fd, F_SETFL, fcntl(fd, F_GETFL, 0) | O_NONBLOCK) < 0) {
fprintf(stderr, "Can't set non blocking mode: %s (%d)\n",
strerror(errno), errno);
close(fd);
return -1;
}
return 0;
}
static int do_command(uint16_t command, uint16_t seqnum, uint16_t varid, uint8_t *value, uint16_t length)
{
errno = EIO;
return -1;
}
int csr_read_bcsp(uint16_t varid, uint8_t *value, uint16_t length)
{
return do_command(0x0000, seqnum++, varid, value, length);
}
int csr_write_bcsp(uint16_t varid, uint8_t *value, uint16_t length)
{
return do_command(0x0002, seqnum++, varid, value, length);
}
void csr_close_bcsp(void)
{
close(fd);
}
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