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Assembly Programming
(5/5)
Write a sequence of instructions to configure PQ2 pin (the SW0 button on the lab kit) as a source of INT0.
INSTRUCTIONS TO CANDIDATESANSWER ALL QUESTIONS
- Write a sequence of instructions to configure PQ2 pin (the SW0 button on the lab kit) as a source of INT0. Configure PQ2 to interrupt on the falling edge. Place INT0 interrupt on high priority. Enable interrupt globally.
- Write the interrupt service routine for INT0 interrupt of PORTQ, which
- Clear the INTo interrupt flag
- Check the PA7 pin. If PA7 is high, increment the data memory location at 0x2050. Otherwise decrement the data memory location at 0x2050.
- Output the value of data memory location at 0x2050 to PORTB.
(5/5)
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