Maxim-integrated MAXQ Family Users Guide: MAXQ2010 Supplement Instrukcja Użytkownika Pobierz pdf (Strona 53)

MAXQ Family User’s Guide:

MAXQ2010 Supplement

6-15

6.2.3 External Interrupt Example: Handling Interrupt on INT10/P5.2

move PD5.2, #0 ; Set P5.2 to input mode

move PO5.2, #1 ; Enable weak pullup

move IV, #intHandler ; Set interrupt vector

move IMR.1, #1 ; Enable interrupts for module 1

move EIE1.2, #1 ; Enable external interrupt 10

move EIES1.2, #1 ; Set INT10 to trigger on falling edge

move EIF1.2, #0 ; Force interrupt flag cleared

nop

move IC.0, #1 ; Enable interrupts globally

sjump $ ; Wait for int to trigger (press SW3)

intHandler:

move EIF1.2, #0 ; Clear interrupt flag

nop

nop ; [SET BREAKPOINT HERE]

nop

reti

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 146 147

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Maxim-integrated MAXQ Family Users Guide: MAXQ2010 Supplement Instrukcja Użytkownika Strona 53