drgeoff wrote:You don't say which OS image you have used though I haven't heard that any of them are set to automatically re-write config.txt.
1. Boot the RPi and make a simple change to config.txt. Just put '# this is a comment' as the last line. (Don't include the quote marks.)
2. Exit and save.
3. Type 'sudo shutdown -h now'
4. Wait until LEDs stop flashing. (They will not all turn off.)
5. Unplug the power.
6. Remove the SD card, put it in a card reader and plug in to your PC
7. If your PC is a Windows PC it will only see the boot partition with several files including config.txt. Open that and see if the comment line is there. (If your PC is a Linux PC, it will also see the main partition on the SD card.)
8. If the comment line is present, safely remove the SD card from the PC, re-insert in RPi and boot it. Then 'nano /boot/config.txt'. Is the comment line still there?
Thanks I've tryed that one, I'm using 2012-07-15-wheezy-raspbian.zip OS btw.
I also did the following, on my windows 7 pc, added a comment and then put the sd back into the pi, after boot, I checked and it was still there (really dont know if the PI used the settings, how do i check the current frequency of the ARM?
Then I shutdown the PI down, took out the SD card and my comment was still there! So It seems that making changes to the config.txt on the Pi itself wont work, but doing it on an another computer does work.
So yea my problem is resolved but it should be possible to change the config in the pi...
Created of the ArduinoPi, a PHP/Python API for controlling an Arduino with the Raspberry Pi.
More info: http://www.fritz-hut.com/all-projects/arduinopi/