linux-kernel - Re: [PATCH] Add the LED burst trigger

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Date:	Thu, 26 Dec 2013 12:18:37 +0100
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	lgxue@...mail.com
Cc:	Bryan Wu <cooloney@...il.com>, Richard Purdie <rpurdie@...ys.net>,
	Rob Landley <rob@...dley.net>,
	"Milo(Woogyom) Kim" <milo.kim@...com>, linux-leds@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-doc@...r.kernel.org
Subject: Re: [PATCH] Add the LED burst trigger

On Tue, Dec 24, 2013 at 3:30 PM,  <lgxue@...mail.com> wrote:
> +Three properties are exported. They are freq, times and delay_off.
> +
> +     freq      - the blink frequency, default value is 3 means 3HZ

Please write "3 Hz". In the kernel "HZ" means the number of jiffies per
second, and "3 HZ" thus represents a 3-second period.

> +     times     - burst blink times in one cycle, no default value
> +     delay_off - off time between two burst blinks, default value is 500 ms
> +
> +2. Case studies
> +
> +     Example 1
> +
> +     echo burst > trigger
> +     echo 2 > times
> +
> +     The behaviour is like below:
> +
> +     on(1/6s)off(1/6s)on(1/6s)off(1/6m)
> +     ...off 500ms...
> +     on(1/6s)off(1/6s)on(1/3s)off(1/6m)

on(1/6s)off(1/6s)on(1/6s)off(1/6s)

> +     ...off 500ms

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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