Hi,
I connected usb keyboard to davinci evm board.
i inserted musb_hdrc.ko module & human interafce module.
The keyboard is working perfectly. i can read keycodes & events.
But the problem came is when i try to glow the keyboard leds.
using EVIOCGBIT ioctl, i got the supported leds for my keyboard,
Supported LEDs:
LED type 0x00 (Num Lock)
LED type 0x01 (Caps Lock)
LED type 0x02 (Scroll Lock)
when i wrote a sample application to glow my capslock led,
struct input_event ev;
ev.type = EV_LED;
ev.code = LED_CAPSL;
ev.value = 1;
fd=open(/dev/input/event0, O_RDWR | O_EXCL);
if(fd>0)
{
retval = ioctl(fd,
EVIOCGNAME(sizeof(devname)), devname);
retvol = write(fd, &ev,sizeof(struct
input_event));
printf("Name : %s, Error : %s,
%s\n",devname, strerror(retval),
strerror(retvol));
sleep(1);
}
else
printf("open failed \n");
close(fd);
When i run this program, i got this error,
Name : HID 1267:0103, Error : Bad address, Device or
resource busy
where, this id's belong to my keyboard only.
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