accessing 2 ports at a time

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???
11/05/01 22:23
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#16287 - accessing 2 ports at a time

Does anyone know why can't I access port 0 and 1 at the same time?
I want to send an output signal to a DAC through P1 (with a timer ISR) and at the same time I want to be reading a keypad in P0.
When I do each of them separated, they work; but when I use the complete code, the 'Atmel 8951' will either paralize or do only one of them.

I still don't know if is a hardware or software problem, or just limitations of the micro.

List of 8 messages in thread

Topic Author Date
accessing 2 ports at a time              01/01/70 00:00
RE: accessing 2 ports at a time              01/01/70 00:00
RE: accessing 2 ports at a time              01/01/70 00:00
RE: accessing 2 ports at a time              01/01/70 00:00
RE: accessing 2 ports at a time              01/01/70 00:00
RE: accessing 2 ports at a time              01/01/70 00:00
RE: accessing 2 ports at a time              01/01/70 00:00
RE: accessing 2 ports at a time              01/01/70 00:00

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Topic	Author	Date
*accessing 2 ports at a time*		01/01/70 00:00
RE: accessing 2 ports at a time		01/01/70 00:00
RE: accessing 2 ports at a time		01/01/70 00:00
RE: accessing 2 ports at a time		01/01/70 00:00
RE: accessing 2 ports at a time		01/01/70 00:00
RE: accessing 2 ports at a time		01/01/70 00:00
RE: accessing 2 ports at a time		01/01/70 00:00
RE: accessing 2 ports at a time		01/01/70 00:00