1, Reboot the box.
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2, insmod /opt/lib/modules/2.6.34/extra/lirc_dev.ko
insmod /opt/lib/modules/2.6.34/extra/lnxplatLirc.ko
3, Enter /opt/bin and run irrecord, ./irrecord -d /dev/lirc0 --disable-namespace new.conf
4, Register ‘power’ key, ‘1’ key and ‘2’ key.
5, cp new.conf /etc/ lircd.conf
6, Run lircd with command ./lircd --listen=5177 --device=/dev/lirc0 -n &
7, Enter /opt/bin and run irw
8, Test the registered key.
但是SEJIN的协议仍然有点小问题，就是第一次按键往往都检测不到，有时候要连续按几次才能检测到一次
查看代码，发现SEJIN和NEC的区别只是采样时钟的定义不同：
#if (REMOTE_PROTOCOL == REMOTE_PROTOCOL_SEJIN)
#define IRRX_CLK_CTRL 55
#define IR_FILTER_VALUE 0x320
#else
/* NEC RC5 */
#define IRRX_CLK_CTRL (((CRYSTAL_FREQUENCY / (16 * 38222 )) - 1)/8)
#define IR_FILTER_VALUE ((CRYSTAL_FREQUENCY / 1000000 )* 400 )
#endif
NEC的频率应该是38KHz，所以改为38000，然后再用irrecord
Press RETURN now to start recording.
................................................................................
Found const length: 352410
Please keep on pressing buttons like described above.
................................................................................
Space/pulse encoded remote control found.
Signal length is 67.
Found possible header: 45585 22623
Found trail pulse: 3033
Found repeat code: 45585 11230
Signals are space encoded.
Signal length is 32
Now enter the names for the buttons.
生成文件如下：
# Please make this file available to others
# by sending it to
#
# this config file was automatically generated
# using lirc-0.8.7(default) on Wed Dec 31 17:06:14 1969
#
# contributed by
#
# brand: new.conf
# model no. of remote control:
# devices being controlled by this remote:
#
begin remote
name new.conf
bits 32
flags SPACE_ENC|CONST_LENGTH
eps 30
aeps 100
header 45585 22623
one 3033 8297
zero 3033 2631
ptrail 3033
repeat 45585 11230
gap 352410
toggle_bit_mask 0x0
begin codes
end codes
end remote
头基本上都对了，具体键值，可用打印的办法测出
# Please make this file available to others
# by sending it to
#
# this config file was automatically generated
# using lirc-0.8.7(default) on Wed Dec 31 17:06:20 1969
#
# contributed by
#
# brand: new.conf
# model no. of remote control:
# devices being controlled by this remote:
#
begin remote
name new.conf
bits 16
flags SPACE_ENC|CONST_LENGTH
eps 30
aeps 100
header 45566 22645
one 3005 8325
zero 3005 2661
ptrail 3007
repeat 45566 11247
pre_data_bits 16
pre_data 0x608f
gap 352399
toggle_bit_mask 0x0
begin codes
KEY_0 0x00FF
KEY_1 0x807F
KEY_2 0x40BF
KEY_3 0xC03F
KEY_4 0x20DF
KEY_5 0xA05F
KEY_6 0x609F
KEY_7 0xE01F
KEY_8 0x10EF
KEY_9 0x906F
KEY_SWITCHVIDEOMODE 0x14EB
KEY_KBDILLUMTOGGLE 0xF807
KEY_CHANNELUP 0x23DC
KEY_CHANNELDOWN 0xA35C
KEY_VOLUMEUP 0x639C
KEY_VOLUMEDOWN 0xE31C
KEY_POWER 0xD02F
KEY_MUTE 0x28D7
KEY_CHANNEL 0x30CF
KEY_MENU 0xCC33
KEY_FAVORITES 0xE41B
KEY_HOME 0x708F
KEY_BACK 0x946B
KEY_ENTER 0xA857
KEY_UP 0x38C7
KEY_LEFT 0xB04F
KEY_RIGHT 0xB847
KEY_DOWN 0x7887
KEY_STOP 0x58A7
KEY_PLAY 0xD827
KEY_REWIND 0x08F7
KEY_FORWARD 0x48B7
KEY_DELETE 0x44BB
KEY_PAGEUP 0xE817
KEY_PAGEDOWN 0x50AF
LOCAL 0x4CB3
KEY_F1 0x847B
KEY_F2 0x9867
KEY_F3 0x18E7
KEY_F4 0x04FB
KEY_RED 0x649B
KEY_GREEN 0xA45B
KEY_YELLOW 0x24DB
KEY_BLUE 0xC43B
end codes
end remote
如果发现有些键值irw能接收到，但是input系统没有收到：
lircd.c
int setup_uinputfd(const char *name)
{
#if defined(__linux__)
int fd;
int key;
struct uinput_user_dev dev;
fd = open("/dev/input/uinput", O_RDWR);
if(fd == -1)
{
fd = open("/dev/uinput", O_RDWR);
if(fd == -1)
{
fd = open("/dev/misc/uinput", O_RDWR);
if(fd == -1)
{
fprintf(stderr, "could not open %s\n",
"uinput");
perror(NULL);
return -1;
}
}
}
memset(&dev, 0, sizeof(dev));
strncpy(dev.name, name, sizeof(dev.name));
dev.name[sizeof(dev.name)-1] = 0;
if(write(fd, &dev, sizeof(dev)) != sizeof(dev) ||
ioctl(fd, UI_SET_EVBIT, EV_KEY) != 0 )/*||
ioctl(fd, UI_SET_EVBIT, EV_REP) != 0) */
{
goto setup_error;
}
for(key = KEY_RESERVED; key <= KEY_UNKNOWN; key++)
{
if(ioctl(fd, UI_SET_KEYBIT, key) != 0)
{
goto setup_error;
}
}
if(ioctl(fd, UI_DEV_CREATE) != 0)
{
goto setup_error;
}
return fd;
setup_error:
fprintf(stderr, "could not setup %s\n", "uinput");
perror(NULL);
close(fd);
#endif
return -1;
}
由于在input_map.inc
{"KEY_UNKNOWN", 240},
所以大于240(0xF0)的键都被屏蔽掉了
