Re: FW: LED driver

Hi,
I have made a driver for our mpc8270 board 
It is based upon Denx led_driver and made for 2.6 kernel
(See atached file)

To control the leds you have to perfom some ioctl's
first create your devices 
mknod led0 c 151 0 ...

Example howto use it:

void led_off( int file )
{
  if (ioctl(file,STATUSLED_SET,0) < 0)
    perror("led off: ");
}
void led_blink( int file )
{
  if (ioctl(file,STATUSLED_SET,1) < 0)
    perror("led blink: ");
}
void led_on( int file )
{
  if (ioctl(file,STATUSLED_SET,2) < 0)
    perror("led on: ");
}
void led_per( int file, int period )
{
  if (ioctl(file,STATUSLED_PERIOD,period) < 0)
    perror("led on: ");
}

...

int led0 = open("/dev/led0",O_RDWR)
...
  led_blink(led0);	/* turn on green LED */
..
/Hans


On Thu, 2005-03-17 at 06:15, srinivas.surabhi@wipro.com wrote:

-----Original Message-----
From: Srinivas Surabhi (WT01 - TELECOM SOLUTIONS)
Sent: Thursday, March 17, 2005 7:53 AM
To: <redacted>
Subject: LED driver

Hi,

I am working on the MPC8270 board having connected GPIO 3 lines
connected to 3 LEDs. So can any one help me in finding out the best
solution of controlling the LEDs from MVlinux (kernel and user space) or
any pointers who has done it before.

Thanks & Rgds
SS




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