Am Dienstag, 31. Juli 2012, 18:36:03 schrieb Gordan Bobic:
Question #204692 on AC100_enablement changed:
https://answers.launchpad.net/ac100/+question/204692
Status: Open = Answered
Gordan Bobic proposed the following answer:
On 07/31/2012 07:01 PM, Francesco Cortassa Gozzi wrote:
New question #204692 on AC100_enablement:
https://answers.launchpad.net/ac100/+question/204692
Hi Guys!
First of all, my very big compliments to all of you for the hard work you
have done to make the ac100 a pleasant-to-use machine!!!
I'd like to add the internal MMC activity notification, as it frequently
happens that I start some heavy application, say Firefox, and the system
gets stuck for some seconds. I dunno if I didn't click correctly or it's
just a matter of waiting... In a proper laptop, I'd have a look at the
HDD led to verify that the program is starting up. I'd sacrifice the wifi
led to use it for MMC activity.
Unfortunately I'm not that linux guru as you guys are, and that's the
reason why I'm asking for your help. What I know is that the MMC led is
driven by the '/sys/class/leds/mmc0::/brightness' system file, and I'm
looking for a convenient way to feed the
'/sys/class/leds/wifi-led/brightness' wifi led with the mmc content...
Or, even, another better way to do the job.
Just for testing, the following command does the trick, but it is awful
and cpu consuming (I feel ashamed of this command!!!):
while : ; do cat /sys/class/leds/mmc0::/brightness
/sys/class/leds/wifi-led/brightness ;done
Does anyone of you have an idea on how to pipe the content of one file
into the other, without making loops or whatever? I tried also to symlink
without luck...
To make it efficient, you'd need to write a kernel patch that connects
these internally and runs every time the MMC interrupt triggers.
maybe not. I haven't my ac100 here, but in theory, it should be enough to
echo mmc0 to the wifi led trigger in sysfs.
Marc
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