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- - N900 Radio Transmitter: ways to amplify the radio signal (https://talk.maemo.org/showthread.php?t=38582)

Re: N900 Radio Transmitter: ways to amplify the radio signal

Quote:

Originally Posted by DaveQB (Post 451795)

Oh good one.

Well what I did was 3 things:

1. Become root, run visudo. In that text file [be careful] add line:
user ALL = NOPASSWD: /usr/local/bin/118
ie type
O
user ALL = NOPASSWD: /usr/local/bin/118
[ESC]
:x

2. Make a file "/usr/local/bin/118"
with contents:

Code:

#!/bin/sh

/bin/echo 118 > /sys/class/i2c-adapter/i2c-2/2-0063/power_level

exit 0

Then type:

Code:

chmod 755 /usr/local/bin/118

3. Add file:
/usr/share/applications/hildon/118.desktop
With contents:

Code:

[Desktop Entry]

Version=0.1

Type=Application

Name=118

Exec= /usr/bin/sudo /usr/local/bin/118

Icon=

X-Windows-Icon=

X-HildonDesk-ShowInToolbar=false

X-Osso-Type=application/x-executable

And now you have an app called 118 that does what you want.
I am not an expert on hildon *.desktop files and running this command waits for some sort of X feedback, so you need to multi-task out and it disappears.

Please someone tidy up that part of it.

I have put those two files you create in that in a tarball you get download onto the N900 directly.

So run this as root:

Code:

wget http://www.dward.us/software/118.tar

tar xf 118.tar

Now run ls and they will both be there, so now just run:

Code:

mv 118 /usr/local/bin/

mv 118.desktop /usr/share/applications/hildon/

HTH

Re: N900 Radio Transmitter: ways to amplify the radio signal

I was trying to get the exact same thing running and it's great that someone got it working! =)

Anyway, I hit a bump trying to follow your steps:
Nokia-N900-42-11:~# visudo
visudo: no editor found (editor path = /bin/vi)

Any clue? I'm using an ssh connection and logged in as root.

Re: N900 Radio Transmitter: ways to amplify the radio signal

Quote:

Originally Posted by ssjtoma (Post 451943)

Oh ok, I thought that was just my N900.

Just link it to vim, you do have vim installed?

Code:

ln -s /usr/bin/vim /bin/vi

Re: N900 Radio Transmitter: ways to amplify the radio signal

Quote:

Originally Posted by DaveQB (Post 451944)

Oh ok, I thought that was just my N900.

Just link it to vim, you do have vim installed?

Code:

ln -s /usr/bin/vim /bin/vi

No, but I'm installing it right now =)

Re: N900 Radio Transmitter: ways to amplify the radio signal

Nice. Works like a charm. I renamed it though to RadioHACK =)

Re: N900 Radio Transmitter: ways to amplify the radio signal

Quote:

Originally Posted by ssjtoma (Post 451954)

Nice. Works like a charm. I renamed it though to RadioHACK =)

Cool. There was a typo in my code with the untaring. I have edited and fixed that, sorry.

Now to make the GUI side effect much better.
I am installed the Maemo 5 SDK, so maybe I will make this a whole lot better and add a dialog box to say the command was successful.

Re: N900 Radio Transmitter: ways to amplify the radio signal

Haha nice. Don't forget to add the permission setting steps to your guide with the tar ball!

chmod 755 /usr/local/bin/118

;)

Re: N900 Radio Transmitter: ways to amplify the radio signal

Quote:

Originally Posted by ssjtoma (Post 451963)

Haha nice. Don't forget to add the permission setting steps to your guide with the tar ball!

chmod 755 /usr/local/bin/118

;)

That is the idea of the tarball; tar preserves unix perms, that's why I used that method.

Re: N900 Radio Transmitter: ways to amplify the radio signal

I wrote to Pekka Ronkko, author of the simple-fmtx widget, to enclose the hack in the next version of his package. Best solution imho.

Re: N900 Radio Transmitter: ways to amplify the radio signal

Wrote the following quick & dirty script to use with desktop-cmd-exec

Create a file with the following code to /usr/local/bin/toggleradio.sh

Code:

#!/bin/bash

fmtx_client|grep disabled > /dev/null

if [ $? -eq 0 ]; then

   fmtx_client -p 1 > /dev/null

   fmtx_client -f 106900 > /dev/null

   echo 118 > /sys/class/i2c-adapter/i2c-2/2-0063/power_level

   echo "RF Enabled @106.90 with power `cat /sys/class/i2c-adapter/i2c-2/2-0063/power_level`"

else

   fmtx_client -p 0

   echo "RF Disabled"

fi

exit 0

chmod 755 /usr/local/bin/toggleradio.sh
add

Code:

user ALL = NOPASSWD: /usr/local/bin/toggleradio.sh

to /etc/sudoers

This will enable the rf transmitter if it's disabled and raise the power and disabled it if it's enabled. Configure desktop-cmd-exec to run it on click. The command line to insert to desktop-cmd-exec is 'sudo /usr/local/bin/toggleradio.sh'

Note, needs bash which you can get by

Code:

apt-get install bash

NOTE: there's seemingly a bug in the desktop-cmd-exec right now which causes it to run the script when you return to the desktop even though it's set to run on-click. I contacted the dev and hope that it'll be sorted out soon.

Made a new version of the script that's not dependent on bash & has some optional parameters to set the xmit power / freq

Code:

#!/bin/sh

#N900 FM transmitter toggler



#Establishing funtions

enableFM () {

   fmtx_client -p1 > /dev/null

   if [ $freq ]; then

        fmtx_client -f$freq > /dev/null

   fi

   echo $power > /sys/class/i2c-adapter/i2c-2/2-0063/power_level

   freq=`fmtx_client |grep frequency=|awk '{print int(substr($1,11))/1000};'`

   echo "RF Enabled @"$freq" with power `cat /sys/class/i2c-adapter/i2c-2/2-0063/power_level`"

   return 0

}



disableFM () {

   fmtx_client -p 0 > /dev/null

   echo "RF Disabled"

   return 0

}



usage () {

        echo "Usage:"

        echo " By default the script sets the power to 118 and does not mess with your default frequency, if you just run it."

        echo " Optional parameter one let's you define the transmission power manually"

        echo " Optional parameter two let's you define the frequency manually (eg. 106900 for 106.9)"

 exit 0

}







#Very simple command line parsing

case "$1" in

        [0-9]* )        power=$1;;

        [A-Za-z\-]* )   usage;;

        * )             power=118;;

esac

case "$2" in

        [0-9]* )        freq=$2;;

        * )

esac



fmtx_client|grep disabled > /dev/null

if [ $? = 0 ]; then

  enableFM

else

  disableFM

fi

exit 0