Re: [ts-7000] autostarting an application in initd/busybox

[Mark Featherston <>]

Roko,

The SD card or XNAND are mounted in parallel to the /bin/sh process where shinit is called.  This shell script is run before the /mnt/root/ directory is mounted with the Debian partition.  The error 'not fount' in this case is referring to the glibc library in Debian under /mnt/root/.  There are 4 options for dealing with this.

1) Move your application startup below the nbd-client startups to wait for Debian to be mounted:

  /yourapphere < $CONSOLE > $CONSOLE 2>&1
  # Software auto-update  
  if [ -x /mnt/root/tsinit ]; then
    /mnt/root/tsinit $XCONSOLE < $CONSOLE > $CONSOLE 2>&1
  fi
  
) </dev/null >/dev/null 2>&1 &

2) You can compile your application with the uclibc toolchain.  This is what we do with our own ctl applications in the initrd:
ftp://ftp.embeddedarm.com/ts-arm-sbc/ts-7500-linux/cross-toolchains/crosstool-linux-arm-uclibc-3.4.6.tar.gz

3) You can compile your application statically to remove the dependency on the external glibc library.

4) As you suggest you can wait in a loop until the Debian partition becomes available.  Keep testing for the existence of the /mnt/root/notrootfs file, and as soon as it is gone the Debian partition has mounted.

Best Regards, 
________________________________________________________________
 Mark Featherston, Technologic Systems | voice: (480) 837-5200
 16525 East Laser Drive                | fax: (480) 837-5300
 Fountain Hills, AZ 85268              | web: www.embeddedARM.com 

On 02/21/2012 10:41 AM, roko2ko wrote:

 

Hello!
I'm using TS 7553 and want to autostart my application in initd/busybox environment. I boot from mSD.

At the end of './shinit' script I've put the following code:
sleep 10
/root/myApp

If I use a shorter sleep period, most of the time I get "sh: /root/myApp not found" error - probably because partition isn't fully loaded into the RAM?? If it's important, I have extended my initd partition from default 2 MB to 4 MB - but this problem occurred in a similar fashion when partition was only 2 MB.

Anyway, the problem is that sometimes everything is ready after 5 s of sleep, and sometimes not. Is there a way to make this init process shorter? Or at least a way to contionously try to execute application in a loop until it succeeds?

Thank you,
Roko

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