Retro: ASUS mimic CX200 JTAG hacking 

Back in my university years I have had some issues with an Asus MIMIC CX200 camera. One of them got broken after a firmware upgrade so I have decided to fix it with JTAG. I have successfully got to UrJTAG to read the IDCODE of the S3C4510B, but I was unable to detect the flash. Now I know that I have had to tweak the bus driver and reveng the board a bit.

Here are some pics (shot with my Nokia 6230 in VGA res) about the trick:

Thin albanian wires were soldered directly to the pins.

Live together cry together series 100 Ohm level shifter JTAG adapter to LPT port.

I have designed an addon board to expose the CPU's intresting interfaces (2 serial, USB, JTAG)

It is fun to look back to those pictures from now. After 5 years we got to a state when it is easier and cheaper to buy a Rpi to solve the same problem rather than fixing that board...
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Install and uninstall Windows drivers from INF files on Windows XP 

Got a daily task with the following conditions:
Get a Windows driver (generated with NI VISA driver generator) installed from TestStand and uninstall that after the test sequence had been run.

My first idea was the devcon.exe's install command, but it does not do what I wanted insted of created a new device in the device manager.

But the following trick was did what I needed:
C:\WINDOWS\system32\rundll32.exe syssetup,SetupInfObjectInstallAction DefaultInstall 128 foo.inf

If you want to call it from NI TestStand create a variable and pass it as arguments otherwise it will not work as expected.

Removing the driver can be done with the following command:
C:\WINDOWS\system32\rundll32.exe syssetup,SetupInfObjectInstallAction Target_remove 4 foo.inf
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Compile urJTAG on Windows under cygwin 

urJTAG source from SVN or Git.
Cygwin: install the packagelist from here: with the technology described here: ... -packages/

The python binding is broken so run the ./ with --disable-python option.


#define NOUSER

befor, and

#ifdef IN
#undef IN

#ifdef OUT
#undef OUT

fter the #include <windows.h> into the sysdep.h

make -j 8 CFLAGS='-Wno-char-subscripts -Wno-unused-value'

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Siemens Quick Pic IQP-500 camera conclusions... 

I have started to play with ESP8266, and remembered to my old UART based IQP-500 Siemens S55 camera module got from a friend a few years ago.
I have started to dream about a 6USD Wifi IP camera, but my dreams shortly fallen to ashes.

I have started experimenting with the following python script:

The code assumes that you need to pull the RTS and CTS pins by hand to low.

Ah yeah... I used to be lazy, so after some patching that code I was able to drive these two pins with my CP2101 based UART converter's RTS and DTR pins. But the code did not worked (nothing came at the serial port after the camera was activated). Let's check with logic analyzer! The camera's baud was not exactly 19200 but ~19100 which gives 0.6% error. The cheapy UART converter have not tolerated that! Lets hook to the good old FTDI! It works. Good.

I was able to take picture with the python code.
Reopening a serialport in python will clear the RTS status, but changing baud rate on the fly does not have the same side effect.

The camera takes ~33K JPGs which is transferred ~3 seconds with the 115200. That would be poor for the video stream, so I thought that I will figure out how can the camera's baud rate increased. 921600 would fit well. But unfortunately the camera's protocoll is not documented and according to the other people reverse engineering results the camera does not have continuous recording functionality.
So bad.

I have not given up the camera project I will look around for cellphone camera modules with SPI port with JPG encoder inside.

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Building libkode & kxml_compiler on system having Qt4 & Qt5 

export USE_QT_VERSION=4; cmake -DQT_QT_INCLUDE_DIR=/usr/include/qt4 -DKDE4_BUILD_TESTS=ON -DQT_QMAKE_EXECUTABLE=/usr/bin/qmake-qt4

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