Difference between revisions of "User:SamuelM"

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* Background:
 
* Background:
−
:: Student at [http://www.eseo.fr/ ESEO] (French engineering school), specialised in Embedded systeme and Automation /
+
:: <s>Student at [http://www.eseo.fr/ ESEO] (French engineering school), specialised in Embedded systeme and Automation /</s>
 
:: <s>Master student at l'[http://www.plymouth.ac.uk/ University of Plymouth] (UK), in [http://www.plymouth.ac.uk/courses/postgraduate/taught/2558/MSc+Robotics Robotics].</s>
 
:: <s>Master student at l'[http://www.plymouth.ac.uk/ University of Plymouth] (UK), in [http://www.plymouth.ac.uk/courses/postgraduate/taught/2558/MSc+Robotics Robotics].</s>
−
:: Internship in Emebedded system and Robotics (Paris)
+
:: Embedded and System Engineer (Paris, France)
  
 
== Interests ==
 
== Interests ==
Line 58: Line 58:
  
 
== Contributions ==
 
== Contributions ==
−
[[OpenCV|Cross-compile OpenCV for your APF]]
 
  
−
[[CMake]]
+
; [[CMake]]
 +
: CMake infrastructure has been integrated in Buildroot since the BR release 2011.02 (available in Armadeus SDK since the armadeus-4.1 release).
 +
 
 +
Armadeus-4.0 uses the Buildroot 2010.11 release
 +
 
 +
Armadeus-4.1 uses the Buildroot 2011.05 release
 +
 
 +
; [[OpenCV|Cross-compile OpenCV for your APF]]
 +
: Already in Buildroot since the BR release 2011.11 (requires CMake infrastructure).
 +
 
 +
; [[External_Toolchains]]
 +
: How to build an Armadeus rootfs with a Buildroot more recent than the one used by the official Armadeus SDK. '''!!! Experimental !!!'''
  
 
== Tips ==
 
== Tips ==
 
=== A colored (and useful) prompt ===
 
=== A colored (and useful) prompt ===
 +
''zsh and [http://www.ctaf.free.fr/dokuwiki/doku.php?id=ctafconf ctafconf] users won't be lost'' ;-)
 
<source lang="bash">
 
<source lang="bash">
 
##
 
##
−
## .profile
+
## ~/.profile
 
##
 
##
 
source /etc/profile
 
source /etc/profile
  
−
bldblk='\033[1;30m' # Black - Bold
+
## Enhanced promt
−
bldred='\033[1;31m' # Red
+
if [ -t 0 ]; then
−
bldgrn='\033[1;32m' # Green
+
    bldblk='\033[1;30m' # Black - Bold
−
bldylw='\033[1;33m' # Yellow
+
    bldred='\033[1;31m' # Red
−
bldblu='\033[1;34m' # Blue
+
    bldgrn='\033[1;32m' # Green
−
bldpur='\033[1;35m' # Purple
+
    bldylw='\033[1;33m' # Yellow
−
bldcyn='\033[1;36m' # Cyan
+
    bldblu='\033[1;34m' # Blue
−
bldwht='\033[1;37m' # White
+
    bldpur='\033[1;35m' # Purple
−
txtrst='\033[0m'    # Text Reset
+
    bldcyn='\033[1;36m' # Cyan
 +
    bldwht='\033[1;37m' # White
 +
    txtrst='\033[0m'    # Text Reset
 +
    undred='\033[4;31m' # Red - Underlined
 +
    bgdred='\033[1;41m' # Red - Background
 +
    bgdblu='\033[1;44m' # Blue - Background
 +
fi;
  
−
export PS1="${txtrst}\u${bldylw}@${bldgrn}\h ${bldpur}[${bldred}\$?${bldpur}] [${bldblu}\w${bldpur}] ${txtrst}\n\${SHELL:5}${bldgrn}\$${txtrst} "
+
rootbgd="${bgdred}"
 +
userbgd="${bgdblu}"
 +
 
 +
export PS1="\$([ \$(id -u) -eq 0 ] && echo -en \"${rootbgd}\" || echo -en \"${userbgd}\")\u${bldylw}@${bldgrn}\h${txtrst} \
 +
${bldpur}[\$(eval \"res=\$?\"; [ \${res} -eq 0 ] && echo -en \"${bldwht}\${res}\" || echo -en \"${bldred}err \${res}\")${bldpur}] \
 +
[${bldblu}\$([ \$(id -u) -eq 0 ] && echo -en \"\\W\" || echo -en \"\\\w\")${bldpur}] ${txtrst}\n\${SHELL:5}${bldgrn}\$${txtrst} "
 
</source>
 
</source>
 +
 +
=== u-boot configuration ===
 +
 +
# ''nfs-boot'' (kernel and rootfs), if the nfs server is alive
 +
# ''boot from the NAND flash'', otherwise
 +
 +
==== u-boot environment ====
 +
 +
<pre class="apf">
 +
BIOS> setenv nfsboot 'setenv bootargs ${console} ${mtdparts}; \
 +
run addnfsargs addipargs; \
 +
setenv autostart yes; \
 +
nfs ${loadaddr} {serverip}:${rootpath}/${board_name}-linux.bin; \
 +
bootm'
 +
BIOS> setenv addnfsargs 'setenv bootargs ${bootargs} root=/dev/nfs rw nfsroot=${serverip}:${rootpath}'
 +
BIOS> setenv addipargs 'setenv bootargs ${bootargs} ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}::off'
 +
BIOS> setenv bootcmd 'if ping ${serverip}; then \
 +
  echo; \
 +
  echo Boot over NFS; \
 +
  echo; \
 +
  run nfsboot; \
 +
else \
 +
  echo; \
 +
  echo Boot from the board;  \
 +
  run jffsboot; \
 +
fi'
 +
BIOS> setenv board_name apf27
 +
BIOS> setenv netmask 255.255.255.0
 +
BIOS> setenv serverip 192.168.10.2
 +
BIOS> setenv gatewayip 192.168.10.1
 +
BIOS> setenv ipaddr 192.168.10.10
 +
BIOS> setenv rootpath /path/to/where/you/untar/your/rootfs
 +
BIOS> saveenv
 +
BIOS> boot
 +
</pre>
 +
 +
Adjust the <tt>bootdelay</tt> if needed.
 +
 +
Next boot will automatically try to boot over NFS, then fallback on the NAND flash
 +
 +
{{Warning|
 +
 +
If the '''NFS server is alive''', but neither the '''linux kernel image nor the rootfs'''
 +
are '''NOT at the expected location''': ''/path/to/where/you/untar/your/rootfs'',
 +
 +
the boot will hang up, so '''booting will fail''' !}}
 +
 +
==== NFS server configuration ====
 +
 +
Refer to the [[Network File System configuration|NFS wiki page]] to setting the NFS server up.
 +
 +
{{Note|Check that the NFS server configuration allows NFS v2 request.
 +
 +
On Archlinux: ''/etc/conf.d/nfs-server'' (see https://wiki.archlinux.org/index.php/NFS#Configure_NFS_fixed_ports)
 +
<source lang="bash">
 +
#MOUNTD_OPTS="--no-nfs-version 2"
 +
MOUNTD_OPTS=""
 +
</source>
 +
}}
 +
 +
Then:
 +
 +
* untar the rootfs tarball in ''/path/to/where/you/untar/your/rootfs''
 +
* copy the linux kernel image to ''/path/to/where/you/untar/your/rootfs''
 +
 +
<pre class="host">
 +
sudo tar xvf apf27-rootfs.tar -C /path/to/where/you/untar/your/rootfs
 +
sudo -fv cp apf27-linux.bin /path/to/where/you/untar/your/rootfs
 +
</pre>

Latest revision as of 22:54, 7 March 2012

<< Member list

<< User list

whoami

  • Name:
Samuel MARTIN
  • Background:
Student at ESEO (French engineering school), specialised in Embedded systeme and Automation /
Master student at l'University of Plymouth (UK), in Robotics.
Embedded and System Engineer (Paris, France)

Interests

  • Robotics
  • Computer Vision
  • Image & signal processing
  • Linux

Objectives

or, what I wanna do with the APF board (APF27 + Devfull)

  • Have fun!
  • Improve my skills in:
    • Hardware development (FPGA)
    • System and embedded OS
    • Electronic development
    • Software development for embedded (tiny) target
  • Share my experiments

Contributions

CMake
CMake infrastructure has been integrated in Buildroot since the BR release 2011.02 (available in Armadeus SDK since the armadeus-4.1 release).

Armadeus-4.0 uses the Buildroot 2010.11 release

Armadeus-4.1 uses the Buildroot 2011.05 release

Cross-compile OpenCV for your APF
Already in Buildroot since the BR release 2011.11 (requires CMake infrastructure).
External_Toolchains
How to build an Armadeus rootfs with a Buildroot more recent than the one used by the official Armadeus SDK. !!! Experimental !!!

Tips

A colored (and useful) prompt

zsh and ctafconf users won't be lost ;-) 

##
## ~/.profile
##
source /etc/profile

## Enhanced promt
if [ -t 0 ]; then
    bldblk='\033[1;30m' # Black - Bold
    bldred='\033[1;31m' # Red
    bldgrn='\033[1;32m' # Green
    bldylw='\033[1;33m' # Yellow
    bldblu='\033[1;34m' # Blue
    bldpur='\033[1;35m' # Purple
    bldcyn='\033[1;36m' # Cyan
    bldwht='\033[1;37m' # White
    txtrst='\033[0m'    # Text Reset
    undred='\033[4;31m' # Red - Underlined
    bgdred='\033[1;41m' # Red - Background
    bgdblu='\033[1;44m' # Blue - Background
fi;

rootbgd="${bgdred}"
userbgd="${bgdblu}"

export PS1="\$([ \$(id -u) -eq 0 ] && echo -en \"${rootbgd}\" || echo -en \"${userbgd}\")\u${bldylw}@${bldgrn}\h${txtrst} \
${bldpur}[\$(eval \"res=\$?\"; [ \${res} -eq 0 ] && echo -en \"${bldwht}\${res}\" || echo -en \"${bldred}err \${res}\")${bldpur}] \
[${bldblu}\$([ \$(id -u) -eq 0 ] && echo -en \"\\W\" || echo -en \"\\\w\")${bldpur}] ${txtrst}\n\${SHELL:5}${bldgrn}\$${txtrst} "

u-boot configuration

  1. nfs-boot (kernel and rootfs), if the nfs server is alive
  2. boot from the NAND flash, otherwise

u-boot environment

BIOS> setenv nfsboot 'setenv bootargs ${console} ${mtdparts}; \
 run addnfsargs addipargs; \
 setenv autostart yes; \
 nfs ${loadaddr} {serverip}:${rootpath}/${board_name}-linux.bin; \
 bootm'
BIOS> setenv addnfsargs 'setenv bootargs ${bootargs} root=/dev/nfs rw nfsroot=${serverip}:${rootpath}'
BIOS> setenv addipargs 'setenv bootargs ${bootargs} ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}::off'
BIOS> setenv bootcmd 'if ping ${serverip}; then \
  echo; \
  echo Boot over NFS; \
  echo; \
  run nfsboot; \
 else \
  echo; \
  echo Boot from the board;  \
  run jffsboot; \
 fi'
BIOS> setenv board_name apf27
BIOS> setenv netmask 255.255.255.0
BIOS> setenv serverip 192.168.10.2
BIOS> setenv gatewayip 192.168.10.1
BIOS> setenv ipaddr 192.168.10.10
BIOS> setenv rootpath /path/to/where/you/untar/your/rootfs
BIOS> saveenv
BIOS> boot

Adjust the bootdelay if needed.

Next boot will automatically try to boot over NFS, then fallback on the NAND flash

Warning Warning:

If the NFS server is alive, but neither the linux kernel image nor the rootfs are NOT at the expected location: /path/to/where/you/untar/your/rootfs,

the boot will hang up, so booting will fail !


NFS server configuration

Refer to the NFS wiki page to setting the NFS server up.

Note Note: Check that the NFS server configuration allows NFS v2 request.

On Archlinux: /etc/conf.d/nfs-server (see https://wiki.archlinux.org/index.php/NFS#Configure_NFS_fixed_ports) 

#MOUNTD_OPTS="--no-nfs-version 2"
MOUNTD_OPTS=""


Then:

  • untar the rootfs tarball in /path/to/where/you/untar/your/rootfs
  • copy the linux kernel image to /path/to/where/you/untar/your/rootfs
sudo tar xvf apf27-rootfs.tar -C /path/to/where/you/untar/your/rootfs
sudo -fv cp apf27-linux.bin /path/to/where/you/untar/your/rootfs
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