Messages

46

Hardware Mods / Stuffing Serial Bluetooth Module Inside C1k Casing

« on: May 23, 2006, 03:35:24 pm »

There was a discussion about schemantics a few pages back. I'm not an electric engineer myself, Boris helped with schemantics. Basically, on his picture LOAD means the module itself. You can find GROUND in many places on Zaurus PCB, including OTG connector. However, beware that OTG connector's ground and +5V are protected from spikes with inductors, so some bouncing may occur. Not sure about possible implications, someone with more electrical knowledge would explain it better...

If you change the resistor in OTG power requlator, it can provide 500mA. I replaced the resistor with a 1K one, and it works fine - it has sufficient current for both ZD1211-based wifi and CSR BC02-Ext-based bluetooth modules at the same time. "3.3V" on Boris' picture means GPIO pin that controls the gate (base) of transistor.
-albertr

47

Zaurus - pdaXrom / Build Abiword 2.4.4

« on: May 23, 2006, 10:59:01 am »

Just out of curiosity, I've compiled firefox 1.5.0.3 with debian patches hoping mostly on debian patches, since Debian claims to support it on ARM, but unfortunately it didn't help with printing problem. So, like Meanie mentioned before, it looks more like pdaXrom-specific issue.
-albertr

48

Hardware Mods / Stuffing Serial Bluetooth Module Inside C1k Casing

« on: May 23, 2006, 10:52:03 am »

AlbertR,
I've now received some of the AML bluetooth modules and they are literally wafer thin - maybe slightly less than a millimetre thick. Do you think there's a chance that one could be squeezed into the gap under the CF card in a C3x00?

Paul, I don't know since I don't have a C3x00. It might be easier for you to just open yours up and measure its internal spacing. Let us know if it does fit...
-albertr

49

Hardware Mods / Stuffing Serial Bluetooth Module Inside C1k Casing

« on: May 23, 2006, 10:44:33 am »

Are there any USB "keychain" dongles with open source drivers that can work in Wireless-G mode on a USB 1.1 bus? Even though the througput would be limited to below Wireless-B speeds, it is still usefull to have Wireless-G capabilities for scanning and G-only access points.

It shouldn't be very difficult to modify ZyDAS's driver to work on b/g even when on USB1,1 bus. How good it would work is a different question. I'm not sure about other g-capable wifi usb chipsets like Ralink's.

Monitoring mode is a bit flaky with ZyDAS, at least with the current drivers.

Would a bluetooth module operate at the same speed using btuart vs. USB? Does btuart mode support the same profiles as USB?

Using the "de-sharped" serial driver, PXA270 works fine @ 961200 baud. That seems to be more than enough to cover BT 1.1 througput, even with BCSP packets overhead.
If you need 2.0 EDR speeds, you'll have to use usb.

As far as profiles go, they are implemented in modules' HCI firmware and in HCI bluetooth stack, so it's not interface-dependant.

Could anyone provide a simplified connection diagram for those who are capable solderers, but do not posses the electronics knowledge? I wish to perform the USB OTG Power Domain and btuart bluetooth mods. The extra power would either go towards the external USB port or an internal wifi module (provided I can make space for one)

What  diagram you are looking for? For USB OTG power regulator all you need is just to replace one resistor. It's pictured on my page. For BTUART to serial BT module connection just connect TX to TX, RX to RX and if you need hardware flow control - CTS to CTS and RTS to RTS. Also connect VCC and GROUND to power module up. If module has a TTL-level RESET input, you can implement resetting circuit via some GPIO line.
-albertr

50

Zaurus - pdaXrom / Build Abiword 2.4.4

« on: May 22, 2006, 12:56:25 pm »

Could be that, or just mozilla's postscript engine gets borked on arm platform (gcc optimization?)... I'm not a postscript expert, but take a look at the attached diff - doesn't it look like pagesize and color values got set incorrectly?
-albertr

51

Zaurus - pdaXrom / Build Abiword 2.4.4

« on: May 22, 2006, 10:51:07 am »

Well, I've compiled Firefox 1.5.0.4 from yesterday's mozilla's cvs, but it still seems to have the same problem.
-albertr

52

Zaurus - pdaXrom / Build Abiword 2.4.4

« on: May 19, 2006, 04:09:57 pm »

Yes, it was too big for an attachment...

http://www.zavrik.ru/feed/pdaxrom/firefox_....2_armv5tel.ipk

-albertr

53

Zaurus - pdaXrom / Build Abiword 2.4.4

« on: May 19, 2006, 02:59:46 pm »

I've compiled Firefox 1.5.0.2 and it sure can print. The only problem is that  it prints PS Level.3 that my office printer (HP8100) fails to interpret. And I don;t have any other PS printer here to see who to blame. I'm gonna take another look at this, since ability to print web pages from my Z is important to me.
-albertr

54

5x00 General discussions / Anyone Retire Their 5500 For A Server Service?

« on: May 19, 2006, 02:16:04 pm »

I have my old 5000D (32MB of RAM vs. 64MB of 5500) working as an arm build host with the old gcc 2.x toolchain. With just 32MB of RAM most of the C++ is out of question, but it works fine for plain C language projects, even for very large ones (it NFS-mounts some of its filesystems).
Actually, integer-ariphmetics- wise it beats my old Sun SS20, even when SS20 is upgraded to ROSS HyperSPARC 150MHz CPU.
-albertr

55

Zaurus - pdaXrom / Build Abiword 2.4.4

« on: May 19, 2006, 02:08:36 pm »

Yes, freetype it was! Thanks for figuring it out! I've compiled 2.1.10 and now AbiWord prints fine. I think you are right about Debian might have been patching  AbiWord or maybe that's because AbiWord compiled with "--disable-gnome" configure option on pdaXrom.

Anyone noticed that some of the font's facesets are changed when switching from freetype 2.1.9 to 2.1.10?

Now if I only can make Firefox to print postscript correctly...
-albertr

56

Zaurus - pdaXrom / Build Abiword 2.4.4

« on: May 19, 2006, 10:29:34 am »

A question for you guys - since you can print in Abiword running on pdaXrom, does your Print dialog show configured CUPS printers? I've compiled both 2.4.2 and 2.4.4 for pdaXrom, but in both cases Print dialog shows only "Create PDF" and "Generic Postscript", it doesn't show my CUPS printers. Also, I din;t find a way in Abiword to add/configure a new printer.

I'm running old rc11 pdaXrom, and Abiword (both versions) crashes when I'm trying to print to Generic Postscript or go into Print Preview.
I don;t have any experience with CUPS and Abiword, so hints on how to debug it are appreciated...
-albertr

57

Hardware Mods / 128 Mb Flash Upgrade

« on: May 19, 2006, 10:07:20 am »

Actually, I was just trying to say that RAM upgrade might be at least as useful .. especially since you got a hold of surface mount station. Hint, hint....
-albertr

58

Hardware Mods / 128 Mb Flash Upgrade

« on: May 18, 2006, 11:32:07 am »

I'm wondering why  to take risks of damaging the Zaurus with upgrading  64MB NAND chip to mere 128MB NAND when 4GB SD cards are available for under 100 bucks now? I think upgrading RAM chips would be more rewarding and at least as much difficult and interesting?
-albertr

59

New products and alternatives / Isn't This What Sharp Should Be Doing?

« on: May 16, 2006, 01:53:25 pm »

$1800? No, thanks.
-albertr

60

Security and Networking / Bluetooth Usb Dongles (first Time User)

« on: May 12, 2006, 02:44:44 pm »

The chipset used in your USB dongle is Broadcom BCM2045. It should be supported by BlueZ under Linux.
-albertr