TPU HELP Please!

Hello... I am new to this group so before I go asking for help I 
figure I will introduce myself.  I am a Senior at Cal Poly San Luis 
Obispo studying Computer Engineering.  I have picked up a fun side 
project working with the MPC555 processor to help me to learn more 
about what it is to actually do some development.  I have 
successfully been able to send and receive data using intterupts 
through the QADC.  I also have even been able to use the TPU in a 
most basic form in order to make a servo that requires a constant 
pulse to move to a designated location.  The problem I now face has 
to do with the TPU in a more advanced way(but still probably 
relatively basic).  I still only sorta understand how the TPU works 
so I have a whole bunch of questions and I would really appreciate 
any advice or help.  I have connected a serial TX line to TPU B 
channel 0 and a serial RX line to TPU B channel 1.  The other board 
that I am trying to interface with sends out normal RS232 data.  
Here is a list of my questions.  

1:  Is it even possible to use the TPU in order to read RS232 data 
being sent through those 2 channels?

2:  I have read about the built in libraries that the TPU Function 
Library is distributed with the develpoment kit but none of them 
seems to work in a way that would be usefull... I took note of the 
Read/Writed Timers and Pin (RWTPIN) as being the most likely but 
that even seemed wrong.  If it is possible will one of those work or 
will I need to write my own tpu code?

3: Does anybody know if there are any built open source or freeware 
libraries that allow for easy reading of RS232 data by the MPC555 
processor through a TPU?

4:  I have read about OS's for microcontrollers such as the MPC555, 
such as uOS/II.  Would something like this make it easier for me to 
do basic developement?

I hope I have been clear about what my problem is but if I need to 
clearify, just say so and I will be more than happy to do so.  I 
have spent a long time trying to figure this out and haven't gotten 
anywhere very quickly.  I know I am asking a lot of questions  and I 
have a lot more but I am new to this and would really appreciat some 
experienced input.  

Thanks in advance,
Chris Koplan
CPE Cal Poly San Luis Obispo




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