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Forum: ARM programming with GCC/GNU tools EINT1 using pin P1.17 (NXP LPC2148)


Author: timo (Guest)
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Hi,

The user manual says that Pins P0.3 and P0.14 can be selected to perform
EINT1 function. I ask. Is it possible to use another pin example P1.17
using EINT1 function?

thanx Timo

Author: Martin Thomas (Guest)
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timo wrote:
> The user manual says that Pins P0.3 and P0.14 can be selected to perform
> EINT1 function. I ask. Is it possible to use another pin example P1.17
> using EINT1 function?

EINT1 can be configured to the two pins you have already found. What
makes you think that the EINT1 function can be routed to another pin
which is not documented? P1.17 has only two functions: GPIO and
"something" for the Trace-Interface - see user's manual pin description
tables. If the frequency is not too high you could poll any GPIO-pin in
a timer-ISR to detect a change.

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