Jot Down: 2011

2011年10月18日星期二

Dump the Memory

PMDump v1.2

Open up a command prompt type the "pmdump -list" command

"pmdump -list" displays a list of running Process with their Process ID (PID)

OR type the "tasklist" command

"tasklist" displays a list of applications and services with their Process ID (PID) for all tasks running on either a local or a remote computer.

then dump the memory contents of a process

type the "pmdump <PID> <filename>" command
ex: pmdump 777 dump.bin

pmdump 1.2 - (c) 2002, Arne Vidstrom (arne.vidstrom@ntsecurity.nu)
- http://ntsecurity.nu/toolbox/pmdump/

Usage: pmdump <pid> <filename>

- dumps the process memory contents to a file

pmdump -list

- lists all running processes and their PID's

ManTech Physical Memory Dump Utility

mdd_1.3.zip

a physical memory acquisition tool for imaging Windows based computers

ManTech Memory DD 1.3 acquires a forensic image of physical memory and stores it as a raw binary file.

Memory DD must be run with Administrator privileges

type the "mdd_1.3 -o <outputfile>" command

ex: mdd_1.3 -o dump.bin

-> mdd

-> ManTech Physical Memory Dump Utility

-> This program comes with ABSOLUTELY NO WARRANTY; for details use option `-w'

This is free software, and you are welcome to redistribute it

under certain conditions; use option `-c' for details.

mdd ManTech Physical Memory Dump Utility

Usage:

mdd <-o OUTPUTFILE> [-qvcw]

-o OUTPUTFILE output file for dump

-q quiet; no output except on error

-v verbose; output offsets of failed mappings

-c redistribution conditions for GPL

-w warranty information for GPL

2011年10月15日星期六

pkg_add: unable to fetch

For example, if you try to install a convmv package

# pkg_add -r convmv
Error: Unable to get ftp://ftp.freebsd.org/pub/FreeBSD/ports/amd64/packages-7.3-release/Latest/convmv.tbz: File unavailable (e.g., file not found, no access)
pkg_add: unable to fetch 'ftp://ftp.freebsd.org/pub/FreeBSD/ports/amd64/packages-7.3-release/Latest/convmv.tbz' by URL

Modify the PACKAGESITE environment variable
# setenv PACKAGESITE ftp://ftp.freebsd.org/pub/FreeBSD/ports/amd64/packages-7-stable/Latest/

then
# pkg_add -r convmv
Fetching ftp://ftp.freebsd.org/pub/FreeBSD/ports/amd64/packages-7-stable/Latest/convmv.tbz... Done.

OR
# pkg_add -r ftp://ftp.freebsd.org/pub/FreeBSD/ports/amd64/packages-7-stable/Latest/convmv.tbz
Fetching ftp://ftp.freebsd.org/pub/FreeBSD/ports/amd64/packages-7-stable/Latest/convmv.tbz... Done.

2011年10月13日星期四

Mounting FreeBSD UFS2 File System

Make the directory for mount

sudo mkdir /mnt/<mount-directory>

ex: sudo mkdir /mnt/ufsdisk

Mount the ufs partition

sudo mount -t ufs -r -o ufstype=ufs2 /dev/<partition> /mnt/<mount-directory>

ex: sudo mount -t ufs -r -o ufstype=ufs2 /dev/sda1 /mnt/ufsdisk

Filename Encoding Conversion

Install package

sudo apt-get install convmv

Converts filename

sudo convmv -f <encoding> -t <encoding> -r --notest *

ex: sudo convmv -f big5 -t utf-8 -r --notest *

USAGE: convmv [options] FILE(S)

-f enc encoding *from* which should be converted

-t enc encoding *to* which should be converted

-r recursively go through directories

-i interactive mode (ask for each action)

--nfc target files will be normalization form C for UTF-8 (Linux etc.)

--nfd target files will be normalization form D for UTF-8 (OS X etc.)

--qfrom be quiet about the "from" of a rename (if it screws up your terminal e.g.)

--qto be quiet about the "to" of a rename (if it screws up your terminal e.g.)

--exec c execute command instead of rename (use #1 and #2 and see man page)

--list list all available encodings

--lowmem keep memory footprint low (see man page)

--nosmart ignore if files already seem to be UTF-8 and convert if posible

--notest actually do rename the files

--replace will replace files if they are equal

--unescape convert%20ugly%20escape%20sequences

--upper turn to upper case

--lower turn to lower case

--parsable write a parsable todo list (see man page)

--help print this help

Mount the Windows share on Linux

Install package

sudo apt-get install smbfs

Make the directory for mount

sudo mkdir /mnt/<mount-directory>

ex: sudo mkdir /mnt/share

Mount the share

mount -t cifs //<IP>/<share> /mnt/<mount-directory> -o user=<user>,pass=<pass>,iocharset=<charset>

ex: sudo mount -t cifs //127.0.0.1/share /mnt/share/ -o user=user,iocharset=utf8

mount.cifs //<IP>/<share> /mnt/<mount-directory> -o user=<user>,pass=<pass>,iocharset=<charset>

ex: sudo mount.cifs //127.0.0.1/share /mnt/share/ -o user=user,iocharset=utf8

smbmount //<IP>/<share> /mnt/<mount-directory> -o user=<user>,pass=<pass>,iocharset=<charset>

ex: sudo smbmount //127.0.0.1/share /mnt/share/ -o user=user,iocharset=utf8

Umount the directory

sudo umount /mnt/<mount-directory>

ex: sudo umount /mnt/share

Usage: mount.cifs <remotetarget> <dir> -o <options>

Mount the remote target, specified as a UNC name, to a local directory.

Options:
user=<arg>
pass=<arg>
dom=<arg>

Less commonly used options:
credentials=<filename>,guest,perm,noperm,setuids,nosetuids,rw,ro,
sep=<char>,iocharset=<codepage>,suid,nosuid,exec,noexec,serverino,
mapchars,nomapchars,nolock,servernetbiosname=<SRV_RFC1001NAME>
directio,nounix,cifsacl,sec=<authentication mechanism>,sign

Options not needed for servers supporting CIFS Unix extensions
(e.g. unneeded for mounts to most Samba versions):
uid=<uid>,gid=<gid>,dir_mode=<mode>,file_mode=<mode>,sfu

Rarely used options:
port=<tcpport>,rsize=<size>,wsize=<size>,unc=<unc_name>,ip=<ip_address>,
dev,nodev,nouser_xattr,netbiosname=<OUR_RFC1001NAME>,hard,soft,intr,
nointr,ignorecase,noposixpaths,noacl,prefixpath=<path>,nobrl

Options are described in more detail in the manual page
man 8 mount.cifs

To display the version number of the mount helper:
mount.cifs -V

2011年10月12日星期三

Blackfin531 with OV7725+FIFO

將OV7725+FIFO接到Blackfin531非同步記憶體匯流排上

OV7725+FIFO

AL422B的控制流程

影像進入FIFO的部分利用VSYNC、WRST、WEN來控制，這部分使用GPIO

影像從FIFO讀入DSP記憶體的部分利用D0~D7、RRST、OE、RCK接非同步記憶體介面來達成

SCL、SDA控制CMOS SCCB部分以GPIO模擬達成

XCLK利用Timer產生PWM訊號當作Clock

*Num.*	*OV7725+FIFO*	*BF531*	*Num.*	*OV7725+FIFO*	*BF531*
1	VCC	VCC3	11	RCLK	ARE
2	GND	GND	12	GND	GND
3	SCL	PF11	13	D0	PD0
4	SDA	PF10	14	D1	PD1
5	VSYNC	PF0	15	D2	PD2
6	WRST	PF2	16	D3	PD3
7	WEN	PF1	17	D4	PD4
8	XCLK	TMR2	18	D5	PD5
9	RRST	PA19	19	D6	PD6
10	OE	AMS2	20	D7	PD7

程式流程

先將FIFO write disable，write reset，等到Frame出現打開write enable，抓完一個Frame後write disable

WEN_OFF

   WRST_OFF
   Delay_us(1);
   WRST_ON

while(VSYNC);
while(!(VSYNC));
   WEN_ON
while(VSYNC);
while(!(VSYNC));
   WEN_OFF

讀取位置0x20200000進行read reset，讀取位置0x20280000將FIFO資料搬回記憶體

   FIFO=(unsigned char *)0x20200000;
i=*FIFO;

   FIFO=(unsigned char *)0x20280000;
   for(i=0;i<640;i++)
   for(j=0;j<480;j++)
   ima[i][j]=*FIFO;

增加第二組OV7725+FIFO

*Num.*	*OV7725+FIFO*	*BF531*	*Num.*	*OV7725+FIFO*	*BF531*
1	VCC	VCC3	11	RCLK	ARE
2	GND	GND	12	GND	GND
3	SCL	PF11	13	D0	PD0
4	SDA	PF10	14	D1	PD1
5	VSYNC2	PF3	15	D2	PD2
6	WRST	PF2	16	D3	PD3
7	WEN2	PF4	17	D4	PD4
8	XCLK	TMR2	18	D5	PD5
9	RRST	PA19	19	D6	PD6
10	OE	AMS3	20	D7	PD7

程式流程

先將兩組FIFO write disable，同時write reset，等到CMOS1 Frame出現打開FIFO1 write enable，抓完Frame1後FIFO1 write disable

WEN_OFF
WEN2_OFF

   WRST_OFF
   Delay_us(1);
   WRST_ON

while(VSYNC);
while(!(VSYNC));
   WEN_ON
while(VSYNC);
while(!(VSYNC));
   WEN_OFF

等到CMOS2 Frame出現打開FIFO2 write enable，抓完Frame2後FIFO2 write disable

while(VSYNC2);
while(!(VSYNC2));
WEN2_ON
while(VSYNC2);
while(!(VSYNC2));

WEN2_OFF

讀取位置0x20200000進行read reset，讀取位置0x20280000將FIFO資料搬回記憶體

   FIFO=(unsigned char *)0x20200000;
i=*FIFO;

   FIFO=(unsigned char *)0x20280000;
   for(i=0;i<640;i++)
   for(j=0;j<480;j++)
   ima[i][j]=*FIFO;

讀取位置0x20300000進行read reset，讀取位置0x20380000將FIFO資料搬回記憶體

   FIFO=(unsigned char *)0x20300000;
i=*FIFO;

   FIFO=(unsigned char *)0x20380000;
   for(i=0;i<640;i++)
   for(j=0;j<480;j++)
   ima2[i][j]=*FIFO;

2011年10月18日 星期二