Pandaboard mldonkey server

1. the original mldonkey with precise has bug.
https://bugs.launchpad.net/ubuntu/+source/mldonkey/+bug/1060007

2. try to build for my own.
   - get mldonkey-3.1.3.tar.bz2 from official site
   - extract & get build depend package
     apt-get install build-essential checkinstall ocaml-nox ocaml-native-compilers zlib1g-dev
   - change CXXFLAGS -O2 to -Os
   - ./configure --disable-multinet
   - make -j2
   - copy ./mlnet to /usr/bin/mlnet (to replace the old one)

3. regarding the password for remote user.
    - telnet 127.0.0.1 4000
    - useradd admin xxxx (xxxx is password you want)

Ref: https://help.ubuntu.com/community/MLDonkey
       http://mldonkey.sourceforge.net/Quickstart_guide
       http://mldonkey.sourceforge.net/CompilationProblems

Pandaboard - fix smsc95xx 1-1.1:1.0: eth0: kevent 2 may have been dropped

1. add smsc95xx.turbo_mode=N in /boot/boot.script

2.  /etc/sysctl.conf
    - vm.min_free_kbytes = 16384 32768
    - vm.vfs_cache_pressure = 200  300

3.  update systcl

    - sudo sysctl -p

lsmod result in Ubuntu precise on Pandaboard

ppp_deflate             4867  0
zlib_deflate           21306  1 ppp_deflate
bsd_comp                5569  0
ppp_async               7602  1
crc_ccitt               1628  1 ppp_async
xt_tcpudp               2573  29
xt_state                1384  1
iptable_filter          1733  1
ipt_MASQUERADE          1954  1
iptable_nat             4528  1
nf_nat                 19315  2 ipt_MASQUERADE,iptable_nat
nf_conntrack_ipv4      14233  4 iptable_nat,nf_nat
nf_conntrack           85255  5 xt_state,ipt_MASQUERADE,iptable_nat,nf_nat,nf_conntrack_ipv4
nf_defrag_ipv4          1594  1 nf_conntrack_ipv4
ip_tables              13212  2 iptable_filter,iptable_nat
x_tables               19387  6 xt_tcpudp,xt_state,iptable_filter,ipt_MASQUERADE,iptable_nat,ip_tables
dm_crypt               18016  0
wl12xx                174783  0
mac80211              490889  1 wl12xx
cfg80211              203992  2 wl12xx,mac80211
wl12xx_sdio             3829  0
compat                  3663  4 wl12xx,mac80211,cfg80211,wl12xx_sdio
gpio_keys               9031  0
leds_gpio               3788  0

Pandaboard disable ondemand cpu governor

1. sudo update-rc.d ondemand disable

2. modify rc.local
# By default this script does nothing.
#set scaling_governor to userspace
echo userspace > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo userspace > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
# set cpufreq to 800Mhz
echo 800000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
echo 800000 > /sys/devices/system/cpu/cpu1/cpufreq/scaling_setspeed

Android keylayout support

1. kernel add gpio key support
2. choose the right .kl & .kcm
it should be the same with the gpio key driver name(ex: gpio-keys.xx)

Openbravo POS note in Lucid (ARMv7)

RXTX could use the repo's package

but, RXTXComm.jar need to be put in /usr/lib/jvm/java-6-openjdk/jre/lib/ext

librxtxParallel.so, librxtxSerial.so need to be put in /usr/lib/jvm/java-6-openjdk/jre/lib/arm

Use TestSerialPort to do the test.
1. javac *.java
2. java ListCommPorts (check result)

Ubuntu ttySx default only root & dialout have permission to use.
so, the openbravo user need to join dialout group.

for autologon & auto-launch openbravo-pos
/etc/lxdm/lxdm.conf need to be modified
[base]
autologin=opos
session=/opt/openbravopos-2.30/start.sh

Pandaboard Ubuntu 12.04 precise note

My goal is make an device that be my wireless access point, transmission daemon, mldonkey daemon & samba server in my home.

1. first I take a look the following info as reference.
    http://drizztcp.wordpress.com/category/pandaboard/

2. Grab the Ubuntu 12.04 image from http://cdimage.ubuntu.com/releases/12.04/release/. I choose http://cdimage.ubuntu.com/releases/12.04/release/ubuntu-12.04-preinstalled-server-armhf+omap4.img.gz for  my Pandaboard A2.

3. Make bootable SDCard & following the install instruction. https://wiki.ubuntu.com/ARM/OmapDesktopInstall

4. Now, I have an bootable Panda.

5. Configuration the hostapd.  I don't want just take my panda as AP only. So, I decide to run dhcpd on wlan0.
  5.1 dhcp-server part:
     5.1.1. apt-get install isc-dhcp-server
     5.1.2 modify /etc/default/isc-dhcp-server
        - INTERFACES="wlan0"
     5.1.3 modify /etc/dhcp/dhcpd.conf
        - option domain-name "myhome.net";
        - option domain-name-servers 168.95.192.1, 168.95.1.1; (for my Hinet DNS)

        - subnet 192.168.0.0 netmask 255.255.255.0 {

              range 192.168.0.100 192.168.0.150;

              option subnet-mask 255.255.255.0;

              option broadcast-address 192.168.0.255;

              option routers 192.168.0.254;

            }

  5.2 hostapd part:

    5.2.1 /etc/network/interfaces We need wlan0 has static ip to be the rule of dhcp-server.

       - auto wlan0

          iface wlan0 inet static

          address 192.168.0.254

          netmask 255.255.255.0

          network 192.168.0.0

          broadcast 192.168.0.255

    5.2.2 /etc/hostapd/hostapd.conf

        - interface=wlan0

          driver=nl80211

          ssid=panda-wifi

          hw_mode=g

          ieee80211n=1  # enable 802.11n support.

          wmm_enabled=1

          #ht_capab=[HT40-][HT40+] #Ti wl1271 only up to 65Mbps. HT40 will cause module hang.

          channel=5

          macaddr_acl=0

          #0 is allow all connection, 1 is deny all connect, only accept in hostspd.accept

          accept_mac_file=/etc/hostapd/hostapd.accept

          deny_mac_file=/etc/hostapd/hostapd.deny

          auth_algs=1

          ignore_broadcast_ssid=0

          wpa=2

          wpa_passphrase=xxxxxx #choose the password you want.

          wpa_key_mgmt=WPA-PSK

          wpa_pairwise=TKIP

          rsn_pairwise=CCMP

    5.2.3 touch /etc/hostapd/hostapd.accept & /etc/hostapd/hostapd.deny to let hostapd daemon running.

  OK, we have wlan0 & hostapd work now. Next, I want the pppoe work. Zyxel P874 seems performance is not good enough for P2P.

6. PPPoE on eth0

  6.1 install ppp, pppoe support

       - apt-get install ppp pppconfig pppoe pppoeconf

  6.2 /etc/ppp/peers/dsl-provider

       - pty "/usr/sbin/pppoe -I eth0 -T 80 -m 1452"

         noipdefault

         usepeerdns

         defaultroute         

         user "????????@ip.hinet.net"

  6.3 /etc/ppp/chap-secrets, /etc/ppp/pap-secrets

       - "????????@ip.hinet.net" * "??????"

  6.4 /etc/network/interfaces

       - add dsl-provider section

          auto dsl-provider

          iface dsl-provider inet ppp

          provider dsl-provider

    6.5 PPPoE keepalive.sh (for auto-reconnect)

#!/bin/sh

# keepalive.sh

# This is a keepalive script for the Casema cable modems. This script was

# lifted from the /usr/doc/HOWTO/unmaintained/mini/Dynamic-IP-Hacks

# document. There should be an entry in your crontab looking like:

# */2 * * * * /etc/ppp/keepalive.sh

# to run this script every 2 minutes to see if your connection is still

# up, if not, gracefully kill the pppd process and remake it.

# Modify paths as necessary.

if [ -f /var/run/ppp0.pid ]; then

testing=$(ping -c4 -l4 168.95.192.1 2>&1 | grep "0 packets")

if [ "$testing" != "" ]; then

        /usr/bin/poff -a

        sleep 10

        /usr/bin/pon dsl-provider

fi

else

        /usr/bin/pon dsl-provider

fi

    6.6 /etc/crontab

        - */2 *    * * *   root    /etc/ppp/keepalive.sh  (for auto-reconnect)

7. To be an Wireless router

    7.1 /etc/sysctl.conf

       - enable IPv4 forward

          net.ipv4.ip_forward=1

    7.2 add iptable rule.

       - wlan0 as LAN (192.168.0.xxx/24) , ppp0 as Internet connection

       7.2.1 /etc/firewall-rules

*nat

:PREROUTING ACCEPT [0:0]

:POSTROUTING ACCEPT [0:0]

:OUTPUT ACCEPT [0:0]

-A POSTROUTING -s 192.168.0.0/24 -o ppp0 -j MASQUERADE

COMMIT

*filter

:INPUT DROP [0:0]

:FORWARD ACCEPT [0:0]

:OUTPUT ACCEPT [0:0]

-A INPUT -i wlan0 -s 127.0.0.1/8 -j DROP

-A OUTPUT -o wlan0 -d 127.0.0.1/8 -j DROP

-A INPUT -i ppp0 -s 127.0.0.1/8 -j DROP

-A OUTPUT -o ppp0 -d 127.0.0.1/8 -j DROP

-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT

-A INPUT -s 127.0.0.0/8 -d 127.0.0.0/8 -i lo -j ACCEPT

-A INPUT -i ppp0 -p tcp -m tcp --dport 22 -j ACCEPT

#for transmission package

-A INPUT -i ppp0 -p tcp -m tcp --dport 9091 -j ACCEPT

-A INPUT -i ppp0 -p tcp -m tcp --dport 51413 -j ACCEPT

#for FTP

-A INPUT -i wlan0 -p tcp -m tcp --dport 20 -j ACCEPT

-A INPUT -i wlan0 -p tcp -m tcp --dport 21 -j ACCEPT

# for SSH

-A INPUT -i wlan0 -p tcp -m tcp --dport 22 -j ACCEPT

#for SMB/CIFS

-A INPUT -i wlan0 -p tcp -m tcp --dport 139 -j ACCEPT

-A INPUT -i wlan0 -p tcp -m tcp --dport 445 -j ACCEPT

#for transmission package

-A INPUT -i wlan0 -p tcp -m tcp --dport 4001 -j ACCEPT

-A INPUT -i wlan0 -p tcp -m tcp --dport 9091 -j ACCEPT

#for SMB/CIFS

-A INPUT -i wlan0 -p udp -m udp --dport 137 -j ACCEPT

-A INPUT -i wlan0 -p udp -m udp --dport 138 -j ACCEPT

#deny hacker scan

-A INPUT -p tcp --tcp-flags ALL NONE -j DROP

-A FORWARD -p tcp --tcp-flags ALL NONE -j DROP

-A INPUT -p tcp --tcp-flags SYN,FIN SYN,FIN -j DROP

-A FORWARD -p tcp --tcp-flags SYN,FIN SYN,FIN -j DROP

-A INPUT -p tcp --tcp-flags SYN,RST SYN,RST -j DROP

-A FORWARD -p tcp --tcp-flags SYN,RST SYN,RST -j DROP

-A INPUT -p tcp --tcp-flags FIN,RST FIN,RST -j DROP

-A FORWARD -p tcp --tcp-flags FIN,RST FIN,RST -j DROP

-A INPUT -p tcp --tcp-flags ACK,FIN FIN -j DROP

-A FORWARD -p tcp --tcp-flags ACK,FIN FIN -j DROP

-A INPUT -p tcp --tcp-flags ACK,URG URG -j DROP

-A FORWARD -p tcp --tcp-flags ACK,URG URG -j DROP

# icmp allow list

-A INPUT -p icmp --icmp-type 0 -j ACCEPT

-A INPUT -p icmp --icmp-type 3 -j ACCEPT

-A INPUT -p icmp --icmp-type 3/4 -j ACCEPT

-A INPUT -p icmp --icmp-type 4 -j ACCEPT

-A INPUT -p icmp --icmp-type 11 -j ACCEPT

-A INPUT -p icmp --icmp-type 12 -j ACCEPT

-A INPUT -p icmp --icmp-type 14 -j ACCEPT

-A INPUT -p icmp --icmp-type 16 -j ACCEPT

-A INPUT -p icmp --icmp-type 18 -j ACCEPT

COMMIT

     7.2.2 /etc/network/interfaces

        - modify dsl-provider section.

           auto dsl-provider

           iface dsl-provider inet ppp

           pre-up iptables-restore < /etc/firewall-rules

           provider dsl-provider

8. install transmission daemon & do basic setting.

BTW, I upgrade the kernel to 3.4.0 (from PPA) & upgrade the tiwlan-wl12xx-dkms, tiwlan-wl12xx-firmware to help wl1271 more stable.

Done...

Upgrade lucid to precise

1. boot.scr mmc init 2;fatload mmc 2 80200000 uImage;bootm 0x80200000 setenv bootargs console=ttyO2,115200n8 mem=512M@0x80000000 root=/dev/mmcblk0p2 rw rootfstype=ext4 rootwait mpurate=${mpurate} ethaddr=${ethaddr} omapdss.def_disp=dvi omapfb.mode=dvi:800x600MR-16@60 vram=4M --no-log ps: --no-log is workaround for "init: Failed to create pty - disabling logging for job"

2. apt sources.list modify /etc/apt/sources.list, replace lucid to precise

3. do dist-upgrade apt-get dist-upgrade -o APT::Immediate-Configure=false during dist-upgrade, some configuration file will be changed

4. mkdir lib/modules dir mkdir -p /lib/modules/2.6.37-gb0042ce touch /lib/modules/2.6.37-gb0042ce/modules.dep

5. remove old udev net rules rm /etc/udev/rules.d/70-persistent-net.rules

6. do backup tar cvpf gogobox-ubuntu-precise-20121015.tar.gz --exclude=/proc --exclude=/lost+found --exclude=/mnt --exclude=/sys /

OMAPDSS:How to enable DVI display

How to enable DVI display
DVI display can be enabled in two ways
1. Using bootargs
Eg: omapdss.def_disp="dvi" omapfb.mode=dvi:720x480@60
2. Using SYSFS attributes
echo 0 > /sys/devices/platform/omapdss/display0/enabled
echo "" > /sys/devices/platform/omapdss/manager0/display
fbset -fb /dev/fb0 -xres 720 -yres 480
echo "dvi" > /sys/devices/platform/omapdss/manager0/display
echo 1 > /sys/devices/platform/omapdss/display2/enabled
kill
Restart without enabling rotation: matrix_gui -qws /usr/share/matrix/html/menu_main.html

ref: http://processors.wiki.ti.com/index.php/AM37x_EVM_Software_Developer%27s_Guide

Bash - rename your file name

for i in *.rmvb; do mv $i `echo $i | cut -d '.' -f 2,3,4,5,6`; done

ex: 远古外星人.Ancient.Aliens.S02E10.HDTV-RMVB.rmvb to Ancient.Aliens.S02E10.HDTV-RMVB.rmvb

Ubuntu Backup/Restore

reference from: http://ubuntuforums.org/showthread.php?t=81311

1. Gen the Tar file:
tar cvpf sendai-backup.tar --exclude=/proc --exclude=/lost+found --exclude=/sendai-backup.tar --exclude=/mnt --exclude=/sys /

2. Restore the tar to target
tar xvpf sendai-backup.tar -C /

3. mkdir the exclude dir
mkdir proc
mkdir lost+found
mkdir mnt
mkdir sys

MK100 Dev. Env R3

Installing Windows Embedded CE 6.0 – Steps:

1. Visual Studio 2005
2. Visual Studio 2005 SP1
3. Visual Studio 2005 SP1 for Vista
4. Windows Embedded CE 6.0
5. Windows Embedded CE 6.0 SP1
6. Windows Embedded CE 6.0 R2
7. Windows Embedded CE 6.0 R3
8. Install Windows Embedded CE 6.0_Product_Update_Rollup_2009
9. copy C:\Program Files\Common Files\microsoft shared\Windows CE Tools\Platman\target\wce600\armV4i to C:\Program Files\Common Files\microsoft shared\Windows CE Tools\Platman\target\wce600\armV4 (for active-sync)
10. device emulator 2.0
11. .net cf 2.0 sp2
12. install ARM VFPv2 library
13. install WesttekFileViewers6.exe (Office, PDF viewer)

Windows CE 6 FTPD, HTTPD related document

FTPD
http://msdn.microsoft.com/en-us/library/ms881874.aspx

HTTPD
http://msdn.microsoft.com/en-us/library/ee498633.aspx

network adb in beagleboard

since rowboat gadget driver does not works for me. so i choose use network adbd for my beagleboard-xm.

target:
setprop service.adb.tcp.port 5555
stop adbd
start adbd

windows:
adb connect xxx.xxx.xxx.xxx:5555

done.

Beagle edit boot.scr

Strip the 72byte long uboot header:
dd if=boot.scr of=boot.script bs=1 skip=72

use u-boot mkimage to gen the .scr
mkimage -A arm -T script -C none -n "beaglexm boot script" -d boot.script boot.scr

OMAP3 GPIO reset pin

take omap3-evm as reference

1. xxxx.h for mux

MUX_VAL(CP(GPMC_WAIT2), (IEN | PTU | EN | M4)) /*GPIO_64*/\

2. xxx.c for set h-l-h pulse

/* Make GPIO 64 as output pin */
writel(readl(&gpio3_base->oe) & ~(GPIO0), &gpio3_base->oe);

/* Now send a pulse on the GPIO pin */
writel(GPIO0, &gpio3_base->setdataout);
udelay(1);
writel(GPIO0, &gpio3_base->cleardataout);
udelay(1);
writel(GPIO0, &gpio3_base->setdataout);

Platform Builder 6 remote tools

C:\Program Files\Common Files\microsoft shared\Windows CE Tools\Platman\target\wce600

copy armv4i to armv4

then VS2005(PB6) remote tools is ready.

Enable multi-core compiling with Visual Studio 2005/2008 for Qt

for Visual studio 2005 mkspecs\win32-msvc2005\qmake.conf
for Visual studio 2008 mkspecs\win32-msvc2008\qmake.conf

change
QMAKE_CFLAGS = -nologo -Zm200 -Zc:wchar_t-
to
QMAKE_CFLAGS = -nologo -Zm200 -MP -Zc:wchar_t-

Speeding up Visual C++ Qt Builds (jom)

1. extract jom binary to %QTDIR%\bin
2. run jom instead of nmake

binary stored place: ftp://ftp.qt.nokia.com/jom/

Install Qt 4.5.3 for Windows with VS2005

Install Qt 4.5.3 for Windows with VS2005

1. get qt-win-opensource-src-4.5.3.zip from ftp or file server

2. extract zip file to c:\qt\

3. cd C:\Qt\qt-win-opensource-src-4.5.3 (check the path in your system)

4. C:\Program Files\Microsoft Visual Studio 8\VC\bin\vsvars32.bat

5. configure -platform win32-msvc2005 -no-qt3support

5.1. wait for a while

6. nmake

6.1. wait for a while

7. Add system variable "QTDIR=C:\Qt\qt-win-opensource-src-4.5.3" & "PATH=C:\Qt\qt-win-opensource-src-4.5.3\bin;%PATH%"

MySQL for Qt

1. Install MySQL with development files (%QTDIR% == C:\Qt\qt-win-opensource-src-4.5.3)
2. C:\Program Files\Microsoft Visual Studio 8\VC\bin\vsvars32.bat
3. cd %QTDIR%\src\plugins\sqldrivers\mysql
4. qmake "INCLUDEPATH+='C:\Program Files\MySQL\MySQL Server 5.1\include'" "LIBS+='C:\Program Files\MySQL\MySQL Server 5.1\lib\opt\libmysql.lib'" mysql.pro
5. nmake
6. Check result. (you will see files in %QTDIR%\plugins\sqldrivers)