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/****************************************************************************
** hw_creative.c ***********************************************************
****************************************************************************
*
* routines for Creative receiver
*
* Copyright (C) 1999 Christoph Bartelmus <lirc@bartelmus.de>
*
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#ifndef LIRC_IRTTY
#define LIRC_IRTTY "/dev/ttyS0"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <limits.h>
#include <signal.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include "lirc_driver.h"
#include "lirc/serial.h"
#define NUMBYTES 6
#define TIMEOUT 20000
static const logchannel_t logchannel = LOG_DRIVER;
unsigned char b[NUMBYTES];
struct timeval start, end, last;
lirc_t gap, signal_length;
ir_code pre, code;
//Forwards:
static int creative_decode(struct ir_remote* remote, struct decode_ctx_t* ctx);
static int creative_init(void);
static int creative_deinit(void);
static char* creative_rec(struct ir_remote* remotes);
const struct driver hw_creative = {
.name = "creative",
.device = LIRC_IRTTY,
.features = LIRC_CAN_REC_LIRCCODE,
.send_mode = 0,
.rec_mode = LIRC_MODE_LIRCCODE,
.code_length = 32,
.init_func = creative_init,
.deinit_func = creative_deinit,
.open_func = default_open,
.close_func = default_close,
.send_func = NULL,
.rec_func = creative_rec,
.decode_func = creative_decode,
.drvctl_func = NULL,
.readdata = NULL,
.api_version = 3,
.driver_version = "0.10.2",
.info = "No info available.",
.device_hint = "/dev/tty[0-9]*",
};
const struct driver* hardwares[] = { &hw_creative, (const struct driver*)NULL };
int creative_decode(struct ir_remote* remote, struct decode_ctx_t* ctx)
{
if (!map_code(remote, ctx, 16, pre, 16, code, 0, 0))
return 0;
map_gap(remote, ctx, &start, &last, signal_length);
return 1;
}
int creative_init(void)
{
signal_length = 108000;
if (!tty_create_lock(drv.device)) {
log_error("could not create lock files");
return 0;
}
drv.fd = open(drv.device, O_RDWR | O_NONBLOCK | O_NOCTTY);
if (drv.fd < 0) {
log_error("could not open %s", drv.device);
log_perror_err("creative_init()");
tty_delete_lock();
return 0;
}
if (!tty_reset(drv.fd)) {
log_error("could not reset tty");
creative_deinit();
return 0;
}
if (!tty_setbaud(drv.fd, 2400)) {
log_error("could not set baud rate");
creative_deinit();
return 0;
}
return 1;
}
int creative_deinit(void)
{
close(drv.fd);
tty_delete_lock();
return 1;
}
char* creative_rec(struct ir_remote* remotes)
{
char* m;
int i;
b[0] = 0x4d;
b[1] = 0x05;
b[4] = 0xac;
b[5] = 0x21;
last = end;
gettimeofday(&start, NULL);
for (i = 0; i < NUMBYTES; i++) {
if (i > 0) {
if (!waitfordata(TIMEOUT)) {
log_error("timeout reading byte %d", i);
return NULL;
}
}
if (read(drv.fd, &b[i], 1) != 1) {
log_perror_err("reading of byte %d failed", i);
return NULL;
}
if (b[0] != 0x4d || b[1] != 0x05 /* || b[4]!=0xac || b[5]!=0x21 */) {
log_error("bad envelope");
return NULL;
}
if (i == 5) {
if (b[2] != ((~b[3]) & 0xff)) {
log_error("bad checksum");
return NULL;
}
}
log_trace("byte %d: %02x", i, b[i]);
}
gettimeofday(&end, NULL);
/* pre=0x8435; */
pre = reverse((((ir_code)b[4]) << 8) | ((ir_code)b[5]), 16);
code = reverse((((ir_code)b[2]) << 8) | ((ir_code)b[3]), 16);
m = decode_all(remotes);
return m;
}
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