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Finally got a chance to play around with the second ipcam I bought.

This one is a little bit smarter than the previous one – its running off an ARM5ARM7 CPU (Nuvoton NUC745ADN), so has a bit more oomph. 16M ram is a whole lot more to play with for a start! The last device only had 16KB, so this puppy can be taught to do some tricks!

Serial was a little bit trickier to solder on this time – my initial connectors were too small, so had to resolder with larger ones, and I managed to mess up a tad. Never said my soldering was any good 😉
Getting it to talk to the computer was a bit painful too – eventually I settled on 115,200 8,n,1, xon/xoff which should have worked the first time around, but I was getting garbage.

Probably flow control (xon/xoff), as fiddling with the connections got it going eventually.

First output from the board is below – this is from a clean boot (with no ethernet or wifi).

W90P745 Boot Loader [ Version 1.1 $Revision: 1 $ ] Rebuilt on Dec 10 2009
Memory Size is 0x1000000 Bytes, Flash Size is 0x200000 Bytes
Board designed by Winbond
Hardware support provided at Winbond
Copyright (c) Winbond Limited 2001 - 2006. All rights reserved.
Boot Loader Configuration:

MAC Address : 0E:F2:B3:DC:08:05
IP Address :
DHCP Client : Enabled
CACHE : Enabled
BL buffer base : 0x00300000
BL buffer size : 0x00100000
Baud Rate : -1
USB Interface : Disabled
Serial Number : 0xFFFFFFFF

For help on the available commands type 'h'

Press ESC to enter debug mode ......
Cache enabled!
Processing image 1 ...
Processing image 2 ...
Processing image 3 ...
Processing image 4 ...
Processing image 5 ...
Processing image 6 ...
Processing image 7 ...
Unzip image 7 ...
Executing image 7 ...
Linux version 2.4.20-uc0 (root@maverick-linux) (gcc version 3.0) #1013 Èý 12ÔÂ 2 13:17:32 CST 2009
Processor: Winbond W90N745 revision 1
Architecture: W90N745
On node 0 totalpages: 4096
zone(0): 0 pages.
zone(1): 4096 pages.
zone(2): 0 pages.
Kernel command line: root=/dev/rom0 rw
Calibrating delay loop... 39.83 BogoMIPS
Memory: 16MB = 16MB total
Memory: 14376KB available (1435K code, 288K data, 40K init)
Dentry cache hash table entries: 2048 (order: 2, 16384 bytes)
Inode cache hash table entries: 1024 (order: 1, 8192 bytes)
Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
Buffer-cache hash table entries: 1024 (order: 0, 4096 bytes)
Page-cache hash table entries: 4096 (order: 2, 16384 bytes)
POSIX conformance testing by UNIFIX
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
Starting kswapd
Winbond W90N745 Serial driver version 1.0 (2005-08-15) with no serial options enabled
ttyS00 at 0xfff80000 (irq = 9) is a W90N745
Winbond W90N7451 Serial driver version 1.0 (2005-08-15) with no serial options enabled
ttyS00 at 0xfff80100 (irq = 10) is a W90N7451
I2C Bus Driver has been installed successfully.
Blkmem copyright 1998,1999 D. Jeff Dionne
Blkmem copyright 1998 Kenneth Albanowski
Blkmem 1 disk images:
0: 7F0E0000-7F16D3FF [VIRTUAL 7F0E0000-7F16D3FF] (RO)
AM29LV160DB Flash Detected
01 eth0 initial ok!
PPP generic driver version 2.4.2
Linux video capture interface: v1.00
Winbond Audio Driver v1.0 Initialization successfully.
usb.c: registered new driver hub
add a static ohci host controller device
: USB OHCI at membase 0xfff05000, IRQ 15
usb-ohci.c: AMD756 erratum 4 workaround
usb.c: new USB bus registered, assigned bus number 1
hub.c: USB hub found
hub.c: 2 ports detected
usb.c: registered new driver audio
audio.c: v1.0.0:USB Audio Class driver
usb.c: registered new driver serial
usbserial.c: USB Serial Driver core v1.4

_____ ____ _ ____
|__ / _| _ \ / \ / ___|
/ / | | | | | |/ _ \ \___ \
/ /| |_| | |_| / ___ \ ___) |
/____\__, |____/_/ \_\____/
ZD1211B - version
usb.c: registered new driver zd1211b
main_usb.c: VIA Networking Wireless LAN USB Driver 1.13
usb.c: registered new driver vntwusb
usb.c: registered new driver rt73
dvm usb cam driver by Maverick Gao in 2006-8-12
usb.c: registered new driver dvm
dvm usb cam driver 0.1 for sonix288 by Maverick Gao in 2009-4-20
usb.c: registered new driver dvm usb cam driver for sonix288
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP: Hash tables configured (established 1024 bind 2048)
VFS: Mounted root (romfs filesystem) readonly.
Freeing init memory: 40K
BINFMT_FLAT: bad magic/rev (0x74202d74, need 0x4)
BINFMT_FLAT: bad magic/rev (0x74202d74, need 0x4)
Shell invoked to run file: /bin/init
Command: mount -t proc none /proc
Command: mount -t ramfs none /usr
Command: mount -t ramfs none /swap
Command: mount -t ramfs none /var/run
Command: mount -t ramfs none /etc
Command: mount -t ramfs none /flash
Command: mount -t ramfs none /home
Command: camera&
Command: sh
no support

Sash command shell (version 1.1.1)
/> hub.c: connect-debounce failed, port 1 disabled
new USB device :80fd7e04-fed640
hub.c: new USB device 1, assigned address 2
dvm cmos successfully initialized
dvm camera registered as video0
new USB device :80fb0204-fed640
hub.c: new USB device 2, assigned address 3
idVendor = 0x148f, idProduct = 0x2573

Wait for auto-negotiation complete...ResetPhyChip Failed
video0 opened
set resolution 5
set brightness 144
set contrast 3
set sharpness 3
set mode 2
manage pid:16
audio_dev.state not AU_STATE_RECORDING
=> usb_rtusb_open
retide_ddns.c: can not get server ip
ntpc.c: can not resolve ntpserver('s ip
get oray info
upnp get ip error
inet_sr.c INET_rinput 321
inet_sr.c INET_setroute 75
inet_sr.c INET_rinput 321
inet_sr.c INET_setroute 75
MlmeAssocReqAction(): WPA2/WPA2PSK fill the ReqVarIEs with CipherTmp!

Initially I had the board setup on its own without the camera attached, but the boot scripts require it connected, otherwise they reboot..
Ostensibly, this is the same hardware as the fi8908w (who are just reselling the OEM version with marginally different firmware as far as I can tell).

Next step is to setup a cross compiler for uclinux so I can make some binaries, and test.
Luckily all the available tools are open source / free. Yay!

I’m in contact with the factory, and they’ll be sending an SDK over at some point soonish, although its only in Chinese.
Luckily for me, that shouldn’t be a problem, as i’m reasonably capable at groking both code, and simplified chinese :)

ucLinux should be easy enough to build a rom image for though – tons of examples, and I already have a few firmware files to compare.

It shouldn’t be too hard for me to roll another firmware with ssh installed, so that we can get in without serial, that would be more useful for others too.

I’ve had a quick look inside the folders in the device from the device itself – fairly minimal, pretty much the only binaries are the necessary ones.
My initial aim is to redo the UI to a nicer one, and fix some of the more glaring bugs. The factory people are at a trade show in Taiwan this week, so hopefully next week I’ll get some dev tools (otherwise its reverse engineering, bleh…).

Some more people are playing with these as well (links below):

Unfortuanately for me, both are variably accessible. WordPress is available this week woohoo, but its an on / off dealio with the GFW…, so I might have to stop commenting there once the government decides if WordPress is “teh evil” again.

The irishjesus blog guy has done some of the harder bits like file extraction already (although not strictly necessary, as there are existing tools for that kind of thing).


Have some docs from the factory now, see attached file for the CGI spec.

IP Camera CGI 应用指南-1.11

I have others, but not so relevant especially for those than don’t read Chinese!

Data sheet for the Chip and build instructions here –



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