freebsd-dev/sys/dev/led/led.h

/*-
 * ----------------------------------------------------------------------------
 * "THE BEER-WARE LICENSE" (Revision 42):
 * <phk@FreeBSD.org> wrote this file.  As long as you retain this notice you
 * can do whatever you want with this stuff. If we meet some day, and you think
 * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
 * ----------------------------------------------------------------------------
 *
 * $FreeBSD$
 */

#ifndef _DEV_LED_H
#define _DEV_LED_H

typedef	void led_t(void *, int);

dev_t	led_create(led_t *, void *, char const *);
void	led_destroy(dev_t);

#endif
Add a generic LED driver for flashing lamps. The hardware driver decides the name under /dev/led and provides the function to turn the lamp on/off. All leds are serviced by a single timeout which runs at a basic rate of hz/10. The LED is controlled by ascii strings as follows. 0 Turn off. 1 Turn on. f Flash: _- f2 Flash: __-- f3 Flash: ___--- f4...f9 etc. d%d Digits. "d12": -__________-_-______________________________ s%s String, roll your own: 'a-j' gives on for (1...10)/10 sec. 'A-J' gives on for (1...10)/10 sec. 'sAaAbBa': _-_--__- m%s Morse '.' dot '-' dash ' ' letter space '\n' word space My mdoc skills do not reach to express that. 2003-11-03 09:47:30 +00:00			`/*-`
			`* ----------------------------------------------------------------------------`
			`* "THE BEER-WARE LICENSE" (Revision 42):`
			`* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you`
			`* can do whatever you want with this stuff. If we meet some day, and you think`
			`* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp`
			`* ----------------------------------------------------------------------------`
			`*`
- Remove the __FBSDID and put the $FreeBSD$ tag in the comment above, so that including this file more than once works. - Fix some style bugs while I'm here. 2004-05-10 11:50:21 +00:00			`* $FreeBSD$`
Add a generic LED driver for flashing lamps. The hardware driver decides the name under /dev/led and provides the function to turn the lamp on/off. All leds are serviced by a single timeout which runs at a basic rate of hz/10. The LED is controlled by ascii strings as follows. 0 Turn off. 1 Turn on. f Flash: _- f2 Flash: __-- f3 Flash: ___--- f4...f9 etc. d%d Digits. "d12": -__________-_-______________________________ s%s String, roll your own: 'a-j' gives on for (1...10)/10 sec. 'A-J' gives on for (1...10)/10 sec. 'sAaAbBa': _-_--__- m%s Morse '.' dot '-' dash ' ' letter space '\n' word space My mdoc skills do not reach to express that. 2003-11-03 09:47:30 +00:00			`*/`

			`#ifndef _DEV_LED_H`
			`#define _DEV_LED_H`

			`typedef void led_t(void *, int);`

- Remove the __FBSDID and put the $FreeBSD$ tag in the comment above, so that including this file more than once works. - Fix some style bugs while I'm here. 2004-05-10 11:50:21 +00:00			`dev_t led_create(led_t , void , char const *);`
			`void led_destroy(dev_t);`

			`#endif`