Difference between revisions of "Debian udev"

From NAS-Central Buffalo - The Linkstation Wiki
Jump to: navigation, search
m (Reverted edit of NtrQgn, changed back to last version by Jkk)
m (corrected initial kuro_boot state (ttyS1 instead of AVR00), and clarified kuro_boot code)
 
(5 intermediate revisions by 4 users not shown)
Line 10: Line 10:
 
* /etc/init.d/halt :
 
* /etc/init.d/halt :
 
replace  
 
replace  
  echo -n "EEEE" > /dev/AVR00
+
  echo -n "EEEE" > /dev/ttyS1
 
with
 
with
 
  if [ -e /dev/AVR00 ]; then
 
  if [ -e /dev/AVR00 ]; then
Line 20: Line 20:
 
* /etc/init.d/reboot :
 
* /etc/init.d/reboot :
 
replace
 
replace
  echo -n "EEEE" > /dev/AVR00
+
  echo -n "CCCC" > /dev/ttyS1
 
with
 
with
 
  if [ -e /dev/AVR00 ]; then
 
  if [ -e /dev/AVR00 ]; then
   echo -n "EEEE" > /dev/AVR00
+
   echo -n "CCCC" > /dev/AVR00
 
  else
 
  else
   echo -n "EEEE" > /dev/ttyS1
+
   echo -n "CCCC" > /dev/ttyS1
 
  fi
 
  fi
  
 
* /etc/init.d/kuro_boot :
 
* /etc/init.d/kuro_boot :
 
replace
 
replace
   echo -n "AVR00 port init : "
+
   echo -n "AVR port init : "
   stty -F /dev/AVR00 10:1:9f0d:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0
+
   stty -F /dev/ttyS1 10:1:9f0d:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0
 
   echo -n "AVR init string send"
 
   echo -n "AVR init string send"
   echo -n "AAAAFFFFJJJJ>>>>VVVV>>>>ZZZZVVVVKKKK" > /dev/AVR00
+
   echo -n "AAAAFFFFJJJJ>>>>VVVV>>>>ZZZZVVVVKKKK" > /dev/ttyS1
 
with
 
with
  
Line 39: Line 39:
 
   echo -n "AVR00 port init : "
 
   echo -n "AVR00 port init : "
 
   stty -F /dev/AVR00 10:1:9f0d:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0
 
   stty -F /dev/AVR00 10:1:9f0d:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0
   echo -n "AVR init string send"
+
   echo -n "AVR00 init string send"
 
   echo -n "AAAAFFFFJJJJ>>>>VVVV>>>>ZZZZVVVVKKKK" > /dev/AVR00
 
   echo -n "AAAAFFFFJJJJ>>>>VVVV>>>>ZZZZVVVVKKKK" > /dev/AVR00
 
  else
 
  else
 
   echo -n "ttyS1 port init : "
 
   echo -n "ttyS1 port init : "
 
   stty -F /dev/ttyS1 10:1:9f0d:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0
 
   stty -F /dev/ttyS1 10:1:9f0d:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0
   echo -n "AVR init string send"
+
   echo -n "ttyS1 init string send"
 
   echo -n "AAAAFFFFJJJJ>>>>VVVV>>>>ZZZZVVVVKKKK" > /dev/ttyS1
 
   echo -n "AAAAFFFFJJJJ>>>>VVVV>>>>ZZZZVVVVKKKK" > /dev/ttyS1
 
  fi
 
  fi

Latest revision as of 00:54, 10 March 2008

Why is there a problem while installing udev ?

Installing udev on the kurobox debian will lead to a problem with AVR device initialisation (and if you do not initialise the AVR device, the kurobox will shut down few minutes after power up) !

The problem is that the AVR device can be accessed using /dev/AVR00, but udev will not create this device ! You have to use /dev/ttyS1 instead ! The problem is that when you're not running udev, /dev/ttyS1 does not point to the AVR device !

How to solve the problem

To solve this, you have to update the following files :

  • /etc/init.d/halt :

replace

echo -n "EEEE" > /dev/ttyS1

with

if [ -e /dev/AVR00 ]; then
  echo -n "EEEE" > /dev/AVR00
else
  echo -n "EEEE" > /dev/ttyS1
fi
  • /etc/init.d/reboot :

replace

echo -n "CCCC" > /dev/ttyS1

with

if [ -e /dev/AVR00 ]; then
  echo -n "CCCC" > /dev/AVR00
else
  echo -n "CCCC" > /dev/ttyS1
fi
  • /etc/init.d/kuro_boot :

replace

  echo -n "AVR port init : "
  stty -F /dev/ttyS1 10:1:9f0d:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0
  echo -n "AVR init string send"
  echo -n "AAAAFFFFJJJJ>>>>VVVV>>>>ZZZZVVVVKKKK" > /dev/ttyS1

with

if [ -e /dev/AVR00 ]; then
  echo -n "AVR00 port init : "
  stty -F /dev/AVR00 10:1:9f0d:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0
  echo -n "AVR00 init string send"
  echo -n "AAAAFFFFJJJJ>>>>VVVV>>>>ZZZZVVVVKKKK" > /dev/AVR00
else
  echo -n "ttyS1 port init : "
  stty -F /dev/ttyS1 10:1:9f0d:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0
  echo -n "ttyS1 init string send"
  echo -n "AAAAFFFFJJJJ>>>>VVVV>>>>ZZZZVVVVKKKK" > /dev/ttyS1
fi
  • /etc/init.d/kuroevtd (If you're not willing to install avr_evtd instead of kuroevtd)

replace both entries (in start & restart) of

start-stop-daemon --start --quiet --exec /usr/sbin/kuroevtd /dev/AVR00

with

if [ -e /dev/AVR00 ]; then
  start-stop-daemon --start --quiet --exec /usr/sbin/kuroevtd /dev/AVR00
else
  start-stop-daemon --start --quiet --exec /usr/sbin/kuroevtd /dev/ttyS1
fi

Conclusion

Now you can make a

apt-get install udev

and the kurobox will no more shutdown few minutes after startup !

--Sylver 10:03, 14 June 2006 (CDT)