Hello,
I am trying to read a DTMF module with an interrupt on a 18F4520.pin B4. I
found something in the examples. Is thissufficient and correct? Direct
reading of portD_low is working correct.
-- choose pins to use for int on change
const byte int_on_change_pins[] = {"B",4}
include interrupt_on_change
int_on_change_init()
-- interrupt for pin B4
procedure int_on_change_callback_0() is
pragma inline
delay_1mS(400)
DTMF = portD_low
end procedure
regards
Hans
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