External Interrupts & pushbutton example
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Posted By:   John_Reynolds
Posted On:   Sunday, May 30, 2004 12:27 AM

Hi all, Iam attempting to conduct the pushbutton example from the Tinispec.pdf file. Iam using a Dallas Semiconductor Rev C socket board with a 390 TINI board. Hardware is not my strong point and lost as to where the pin is that i should hook the button up to for an external interrupt to occur. Using socket72revC.pdf (page 2 of 5) i have worked out that i need the button to apply 5v onto Int1 (pin 9 U3:C) or Int2 (pin 10 on U3:C) so that this will drive ExtInt to 0 which means that an interrupt will occur. The question is, Where abouts on the Dallas Semiconductor Rev C socket can i plug in   More>>

Hi all,



Iam attempting to conduct the pushbutton example from the
Tinispec.pdf file.



Iam using a Dallas Semiconductor Rev C socket board with a
390 TINI board.



Hardware is not my strong point and lost as to where the
pin is that i should hook the button up to for an external
interrupt to occur.



Using socket72revC.pdf (page 2 of 5) i have worked out that i need the
button to apply 5v onto Int1 (pin 9 U3:C) or Int2 (pin 10
on U3:C) so that this will drive ExtInt to 0 which means
that an interrupt will occur.



The question is, Where abouts on the Dallas Semiconductor
Rev C socket can i plug into pins from an external source that connect upto Int1 or Int2 ? I have
repeatedly tried tracing the solder lines but keep getting
lost.



Please Help.



Thanks in advance,



John.

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