Controlling LAN LEDs individually

[rbiks]

Hi out there,

here is a small program that allows you to control the LAN status LEDs. You might simply want to switch them off if you find them too bright (this was my intention).
Your need libusb-0.1-4 and libusb-dev to compile. It does not work with libusb-1! I tested the program with raspbian but it should also work with other distributions.

Get the attachment, ungzip it and compile with

Code: Select all

make

Have fun!

[mahjongg]

for a moment I thought that you controlled over 9000 LED's!

Because of that I slightly modified the subject line.

[rbiks]

After a bit of trying I managed to control the LAN LEDs individually. Any of the three LEDs (duplex, speed and link) can now be independently switched so that it is suitable to signal events as you like.

[rpdom]

i tried this on my model a pi and i couldn't get any of those leds to light up. am i doing something wrong?

[rbiks]

i tried this on my model a pi and i couldn't get any of those leds to light up. am i doing something wrong?

Try harder

[joan]

i tried this on my model a pi and i couldn't get any of those leds to light up. am i doing something wrong?

It might work if you use sudo.

[rpdom]

Tanks. sudo fixed it

[kosh-ark]

Hello,
I tried to compile but it doesn't work:

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pi@volumio:~$ apt-get install gcc
pi@volumio:~$ sudo apt-get install libusb-dev
pi@volumio:~$ gcc llctl.c
/tmp/cc1vXasU.o: In function `get_config':
llctl.c:(.text+0x374): undefined reference to `usb_control_msg'
/tmp/cc1vXasU.o: In function `write_config':
llctl.c:(.text+0x3f8): undefined reference to `usb_control_msg'
/tmp/cc1vXasU.o: In function `get_usb_device':
llctl.c:(.text+0x420): undefined reference to `usb_init'
llctl.c:(.text+0x424): undefined reference to `usb_find_busses'
llctl.c:(.text+0x428): undefined reference to `usb_find_devices'
llctl.c:(.text+0x4c0): undefined reference to `usb_busses'
/tmp/cc1vXasU.o: In function `main':
llctl.c:(.text+0x578): undefined reference to `usb_open'
llctl.c:(.text+0x5b8): undefined reference to `usb_close'
llctl.c:(.text+0x60c): undefined reference to `usb_open'
llctl.c:(.text+0x9c0): undefined reference to `usb_close'
collect2: ld returned 1 exit status

Could you please provide binaries or some help? thanks.

[kosh-ark]

My fault, I didn't notice the Makefile.
Compiled now.

[henryk]

FYI: There *is* a datasheet that covers this topic. It's just called "Databook for Software Development" and hence not easy to find when looking for a datasheet: http://www.microchip.com/SWLibraryWeb/p ... AN95xx-DAT. LED-GPIO configuration is found in section 4.3.9 on page 160.

[rbiks]

FYI: There *is* a datasheet that covers this topic. It's just called "Databook for Software Development" and hence not easy to find when looking for a datasheet: http://www.microchip.com/SWLibraryWeb/p ... AN95xx-DAT. LED-GPIO configuration is found in section 4.3.9 on page 160.

Thank you Henryk,

this looks very interesting. Expecially the sections about power saving.

rbiks

[bejkarna]

I had some problems compiling using Makefile. I got errors like:

llctl.c:(.text+0x220): undefined reference to `usb_control_msg'

I solved this by putting CCFLAGS after SRC in Makefile as follows:

CC = gcc
CCFLAGS = -lusb
SRC = llctl.c
TRG = llctl

all:
$(CC) $(SRC) $(CCFLAGS) -o $(TRG)
strip $(TRG)

[coding]

Hello,

I would like to disable the LAN LEDs of my Raspberry Pi 2.
I noticed this thread is old and it was created when the Raspberry Pi 2 did not yet exist.
Is this the only method to disable the LAN LEDs or is there a simpler method especially for the Raspberry Pi 2?

[DougieLawson]

Hello,

I would like to disable the LAN LEDs of my Raspberry Pi 2.
I noticed this thread is old and it was created when the Raspberry Pi 2 did not yet exist.
Is this the only method to disable the LAN LEDs or is there a simpler method especially for the Raspberry Pi 2?

I'm not sure the LAN LEDs are connected to a GPIO on the RPi2 (or a B+), they appear to be part of the ethernet hardware.

I'd guess the machine to test this stuff on is my B+, since the old A/B version of the program should run on there without needing any changes.

Edit: I tried this on my B+ and it has precisely zero effect on the ethernet LEDs.

[The_Unknown]

I just used the script on my Pi 2. Works like a charm. Only one thing is still annoying: When restarting the device, the configuration gets lost I tried to add it to the super user level /etc/rc.local file but not success. The file is read but my commands (which of course in this case don't use the sudo command) aren't executed.

Adding to the user's .profile file (user osmc) won't work either since it's required to run it as super user.

What can I do ?

[dasmanul]

I can confirm that this works flawlessly on a Pi 2. Thanks very much, rbiks! I'm using my Pi 2 as a music player in the bedroom and the LEDs were somewhat annoying.

I also had no trouble adding it to /etc/rc.local (on Raspbian Jessie), Ethernet LEDs turn off immediately after reboot.

I tried to add it to the super user level /etc/rc.local file but not success. The file is read but my commands (which of course in this case don't use the sudo command) aren't executed.

That's strange. As I wrote, this works flawlessly for me. What version of which OS are you running? What exactly did you put into /etc/rc.local? Did you give the full path for the llctl binary? Here's what it looks like on my system:

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reiter@nacht:~$ grep llctl /etc/rc.local 
/usr/local/bin/llctl f0 l0 d0

[coding]

Can someone who is a programmer and has a good reputation on this forum please confirm that the source code is safe to use? I don't understand the source code, so I wouldn't know what I compile and how it could affect my Pi's security. But if it works and is safe, I think it should become more known to the community.

[shuckle]

Source is safe on security point of view.
It is simple little program, which does not open any doors nor include viruses.

I also tested that it works and indeed needs root privileges.

You just compile it:
make

It needs this:
sudo apt-get install libusb-dev

[coding]

Wow, I just tried this program too, it works for the Pi 2 and is fantastic. It's a must have for bedroom Pis. This thread is heavily underrated, the attachment should have thousands of downloads. The Raspberry Pi foundation should include such functionality in their raspi-config setup program.

Many thanks @rbiks for a great program!

[The_Unknown]

I can confirm that this works flawlessly on a Pi 2. Thanks very much, rbiks! I'm using my Pi 2 as a music player in the bedroom and the LEDs were somewhat annoying.

I also had no trouble adding it to /etc/rc.local (on Raspbian Jessie), Ethernet LEDs turn off immediately after reboot.

I tried to add it to the super user level /etc/rc.local file but not success. The file is read but my commands (which of course in this case don't use the sudo command) aren't executed.

That's strange. As I wrote, this works flawlessly for me. What version of which OS are you running? What exactly did you put into /etc/rc.local? Did you give the full path for the llctl binary? Here's what it looks like on my system:

Code: Select all

reiter@nacht:~$ grep llctl /etc/rc.local 
/usr/local/bin/llctl f0 l0 d0

At first I had the file in the osmc-user's dir. After your post, I tried to do exactly the same as you did, but no success. The lights are on

[wiredman]

okay so the right way to do it is to edit "/etc/network/interfaces"
under the "iface eth0" line, add post-up /path/llctl f0 l0 d0.
the network driver changes leds later on; this makes it so every time it changes, you reset the leds.

[coding]

Do you know how to install libusb-0.1-4 in Arch Linux? Because there is only libusb 1. Libusb's homepage does not list the release 0.1.

Any way to rewrite the code to work with libusb-1?

Edit: this is a solution:

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pacman -S libusb-compat

It's version 0.1.5-1 and works. Could compile and execute.

[mcduman]

anybody tried this with the rpi3? I cannot get it to work.

[dom]

anybody tried this with the rpi3? I cannot get it to work.

Yes, works for me on Pi3.
I ran:

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tar xf llctl.tgz 
make
sudo ./llctl f0 l0 d0

and the LEDs went off.

[mcduman]

Yep it works. I saw a new commit at github though dated February 2017 (https://github.com/dradermacher/lan951x-led-ctl) downloaded and compiled it but could not get it to work