How to enable and disable Global Interrupt?

Systems Architecture
7th Edition
ISBN:9781305080195
Author:Stephen D. Burd
Publisher:Stephen D. Burd
Chapter6: System Integration And Performance
Section: Chapter Questions
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3. Answer the following:
a. What is the purpose of PCIE1 in PCICR Register?
b. What are PCICR and PCMSKO Registers?
c. What is the purpose of PCINT7 bit in PCMSKO?
4. If you want to set a Pin Change Interrupt on Pin B7, which bits must be set? (Refer to the
datasheet)
5. How to enable and disable Global Interrupt?
6. How do you define an ISR() in your program? Write an ISR for pin change interrupt to toggle
LED,
Transcribed Image Text:3. Answer the following: a. What is the purpose of PCIE1 in PCICR Register? b. What are PCICR and PCMSKO Registers? c. What is the purpose of PCINT7 bit in PCMSKO? 4. If you want to set a Pin Change Interrupt on Pin B7, which bits must be set? (Refer to the datasheet) 5. How to enable and disable Global Interrupt? 6. How do you define an ISR() in your program? Write an ISR for pin change interrupt to toggle LED,
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