68300

Andrei,
 
Changing the channel priority will not do anything to a TPU pin.
 
Suppose that you configured a TPU channel to be a PWM, which makes the TPU pin an output.  Well, the pin will just sit there and give a nice PWM.  
 
If you change the channel priority to %00 (no priority) then the TPU channel will never get serviced again.  The pin will remain an output at the level it was at when the channel priority was set to %00.
 
Once again, changing the channel priority to %00 will not reset a TPU channel or make it become an input or anything else.
 
Regards,
 
Charlie

-----Original Message-----
From: Andrei Chichak [mailto:acpmiedm@...]
Sent: Thursday, January 09, 2003 3:05 PM
To: 68300@yahoogroups.com
Subject: RE: [68300] TPU pin state


Thanks Charlie,

The second part of the question was does setting the channel priority, of a 
configured channel, to disabled make the pin into an input with no function?

Thanks
Andrei

At 12:57 PM 1/9/2003 -0700, you wrote:
>Hello everyone,
>
>Unprogrammed TPU pins become inputs and have no function.
>
>They cannot be used as I/O or anything.  Only the TPU can use these pins.
>
>Charlie
>
>-----Original Message-----
>From: Andrei Chichak [mailto:acpmiedm@...]
>Sent: Thursday, January 09, 2003 1:20 PM
>To: 68300@yahoogroups.com
>Subject: [68300] TPU pin state
>
>
>When a TPU pin is not programmed, does it default to an input, output, or
>is it high Z?
>
>What is the proper way to stop a TPU port so that it goes back to default
>state? Just set the channel priority to disabled?
>
>I have a TPU UART transmitter channel that I want to disable until the
>remote party initiates a conversation. I currently set the channel to be a
>receiver until it is needed then it is disabled and turned into a
>transmitter. I have since changed my code to simply set the channel
>priority to disabled until it is needed.
>
>Andrei
>
>-------
>Andrei Chichak               #200 10835-120 Street
>Senior Software Developer    Edmonton, Alberta
>Pulmonox Medical Inc.        Canada
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>                               (F) (780) 452-0169
>
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