Re: hx4700-port serial connectivity

Ok,

I have another update on the serial cable, I have it working now with the
linux kernel.
After reading through some of the source, namely hx4700.c, I noted that you
are checking for DCD before enabling the serial port

so, to get this working I have had to wire the DCD wire so this additional
to below the following connection is required.

IPAQ connector -> DB9 Female
pin 6 -> s4 DCD

I am hoping to get my hands on some simply hello world like code that
contains
serial driver, and the necessary bootstrap stuff to load by itself and dump
hello world out the serial port.

does anyone have this kind of thing or know if there is anything around??

Regards,

Paul Solomon

----- Original Message -----
From: "Paul Solomon" <psolomon_at_tpg.com.au>
To: "hx4700-port mailing list" <hx4700-port_at_handhelds.org>
Sent: Wednesday, February 09, 2005 11:56 PM
Subject: Re: [Hx4700-port] hx4700-port serial connectivity

> Ok,
>
> I have done some mucking around and resoldering and resoldering again and
> I seem to have got the serial cable to work..
> The sucessful pinout was as follows..
>
> IPAQ connectror -> DB9 Female
> pin 7 -> pin 3 - RXD
> pin 8 -> pin 2 - TXD
> pin 10/15/22 -> pin 5 GND (I actually ended up wiring all 3 gnd pins
> together 10, 15, and 22)
>
> Please note, (as I got this backwards the first time!!) pin 1 on the IPAQ
> connector is the pin that will connect to the left mode side of the IPAQ
> when plugged in.
>
>
> now, with this cable I have managed to get into the serial console of the
> HP bootloader and have it print out lots of info.
> however, I have grabbed a copy of the haret, initd_feb2a, zImage_jan31 and
> startup.txt.
>
> I dumped these in my documents, when I start haret, I get tux, the
> thermometer goes up, his eyes go bloodshot, but I see nothing on the
> serial port..
>
> am I overlooking something, When I hit the soft restart button with the
> bootloader keys pressed however I get all the bootloader info on the
> serial port so I am pretty sure that my cable is working and that my
> serial parameters are set correctly..
>
> Any ideas would be great!
>
> Regards,
>
> Paul Solomon
>
> ----- Original Message -----
> From: "Michael Opdenacker" <michael_at_free-electrons.com>
> To: "Paul Solomon" <psolomon_at_tpg.com.au>
> Cc: "hx4700-port mailing list" <hx4700-port_at_handhelds.org>
> Sent: Tuesday, February 08, 2005 1:10 AM
> Subject: Re: [Hx4700-port] hx4700-port serial connectivity
>
>
>> Hi Paul,
>>
>> Thanks for (at least trying to) join the project!
>>
>>> I have recently bought a hx4700 and have just today tried to make a
>>> serial cable for it and run linux using the latest initrd, zimage and
>>> haret from the kernel wiki page..
>>>
>>> When I run haret, I get tux on the screen with a red thermometer filling
>>> up and then his eyes go bloodshot.. I however am not getting anything on
>>> the serial port..
>>>
>>> can someone confirm the correct serial settings, I am using 15200, 8N1,
>>> no flow..
>>
>> Well, I'm using 115200 8N1 too (I guess that's what you meant, instead of
>> "15200").
>>
>>>
>>> I actually suspect that my cable pinout may be incorrect, I based it off
>>> http://opdenacker.org/pda/ipaq/connector/ipaq_connector.png as I had a
>>> spare power connector lying around. However, I have also tried to get
>>> the HP serial bootloader up, but when it comes up it sats HP blah blah
>>> Serial.. but when I plug my cable in it changes to USB, and goes back to
>>> serial only if I remove my cable..
>>>
>>> so, is there anyone who can confirm that those serial pinouts are
>>> correct, I have also assumed that the serial cable is designed to be a
>>> DB9 Female which plugs straight into the serial port of the computer,
>>> i.e. no NULL modem crossover necessary..
>>
>> It definitely looks like your cable doesn't work. I confirm that at least
>> someone could successfully make a serial cable using this connectivity
>> diagram. This cable was tested on a h2200 device.
>>
>> By the way, I updated the URLs on
>> http://opdenacker.org/pda/ipaq/connector/ipaq_connector.png
>>
>> I hope we will find what's wrong with your cable...
>>
>> :-)
>>
>> Michael.
>>
>> --
>> Michael Opdenacker
>> http://free-electrons.com
>>
>>
>
>
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>
Received on Thu Feb 10 2005 - 04:47:27 EST