[NTLK] MP2x00 Internal Interconnect Breakout

[Jake Bordens]

I have posted the source to "Internal Serial Enabler" - a small newton app 
that allows you to view and control a few of the signals of the internal 
serial slot on the MessagePad 2x00.

Once again, I can't credit Eckhart Köppen enough for posting the source to 
Newton-Blunt-Support <https://github.com/ekoeppen/Newton-Blunt-Support>.  
It is how I learned to call arbitrary ROM functions.


This application is intended for developers working on hardware for the 
internal serial slot.  If you are not such a person, do not install this 
application.   It should be harmless for a Newton with an empty internal 
serial slot.  Even still, you are toggling hardware signals with 
undocumented ROM functions... there is the potential to do hardware damage.

You can find more info and a screenshot here: 
http://retronewton.blogspot.com/2015/01/posted-to-github.html

Seriously, you don't need this.  There are a handful of people for whom 
this will be useful. If you're not one of them, then move along-- nothing 
to see here.



Jake

On 1/15/15, 11:23 AM, "Matthias Melcher" <mm at matthiasm.com> wrote:

>
>> On Jan 15, 2015, at 2:38 AM, Jake Bordens <jake at allaboutjake.com> wrote:
>> 
>> One note, I have been able to successfully call the 
>> SerialPortXXXLineDriverConfig functions and control the pins manually.  
>> Both Select0 and Select3 work as expected. I whipped up a little app to 
>> manually toggle the signals:
>> 
>> 
>>http://2.bp.blogspot.com/-2ZMlwBeOJNQ/VLcVzjiQKGI/AAAAAAAAAaE/1GlD45N1hLs
>>/s
>> 1600/serial_enabler_screenshot.jpg
>
>Nice one. This may come in handy. Would you please send me a copy? mm ät 
>matthiasm dot com
>
>> This is based on Eckhart's code, which provides a good blueprint for 
>> calling arbitrary functions in ROM.  I don't call the 
>>WriteDIO/WriteGPIO 
>> functions directly, but call the LineDriverConfig functions to do it-- 
>>you 
>> just need to have the right parameters.
>> 
>> Also, just so that I have a good place to post images and content, I 
>>setup 
>> a little blogger blog roll.  I'm not really a blogger, but I wanted 
>> someplace that will have some sort of staying power.  I figure since 
>> blogger.com is google-owned, it'll likely be around for a good long 
>>time.
>> 
>> http://retronewton.blogspot.com
>
>Great idea. Thanks for putting tis all together.
>
>In the mean time, I received the USB test board and I did get serial 
>communication to run on the board. There is no hook up to my MP yet.
>----------------------------------------------------------------------
>
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