Need a serial cable to connect your iPAQ h22xx (h2210, h2212e or h2215)
to your GNU/Linux PC and
start playing with the Linux kernel? Having a serial connection is much
easier than a USB one in early kernel debugging.
Unfortunately, only an USB cable is supplied with the H22xx.
Fortunately, you have 4 options:
You can buy a dual USB/Serial cable from HP.
It's reference is FA122A#AC3 and it costs $25.
You can reuse a dual serial/usb cable from the cradle of
other iPAQ devices! The same dual serial / usb cable will work for
H38xx, H39xx, H5xxx,
and H22xx, though the H22xx will not fit in the cradle. Don't hesitate
to get a second-hand one, which should be quite easy to find.
You can hardwire your own connector, knowing the connectivity between the cradle
and the serial and usb ports. You can do that by sacrificing your
charger cable, soldering its wires to those of a serial plug from an
old serial modem. Contact us through the h2200-port mailing list if you
need more details.
You can use IrDA
instead of a serial cable. Just run minicom on /dev/ttyS2 and set up
devices -> Serial port drivers -> PXA serial device, check "use
ttyS2in SIR mode"). This is probably your best and cheapest
option if you have a working IrDA port on your GNU/Linux computer. CAUTION: this doesn't work yet... We
are still investigating! So far, a serial cable is still the only
option to access a serial console!
Cradle disassembling instructions
Here's how I disassembled my iPAQ h3970 cradle. Hope this can help you
Caution: you could damage your cradle
and make it unusable! Of course, doing this may also void the warranty
of the cradle you disassembled!
First you have to unscrew the 4 small screws on the back (in the
The screws look like torx ones,
but even my smallest torx wrench wasn't small enough.
Fortunately, my neighbour had a very small allen wrench, with a round
end, of the below shape:
Good luck! This could be the most tricky part!
Now that you took the screws away, you can easily remove the black
sides and get:
Now take the base away:
Now smoothly slide the 2 connectors respectively up and down, to
separate them from the base. You never
have to use force:
Here's what you get when you're done:
You can now take the connector away from the base:
Remove this part from the base by unclipping it, to get bigger hole in
Don't try to separate the cable and the base by this end. The serial
connector can't go through the base. It's too thick:
Instead, move the connector through the base. This is not very easy,
but after rotating it several times, you'll find a way to take it
through. Again, you never need
to use force. Be flexible and patient: