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EmbeddedComputingSystemsUnit4 .pdf



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Embedded Computing System(06CS74)

UNIT - 4
DEVICE DRIVERS AND INTERRUPTS SERVICE MECHANISM:
Device access without interrupts
ISR concept
Interrupt sources
Interrupt servicing mechanism
Multiple interrupts
Context and the periods for context-switching interrupt latency and deadline
Classification of processors’ interrupt service mechanism from context-saving
angle
Direct memory access
Device drivers programming.
7 Hours

Page 35

Embedded Computing System(06CS74)

Device access without interrupts, ISR concept

Interrupt sources

Page 36

Embedded Computing System(06CS74)

Multiple interrupts
Hardware assigned priorities

Page 37

Embedded Computing System(06CS74)
Software Assigned priority

Context and the periods for context-switching interrupt latency and deadline
Interrupt Latency

Context switching

Interrupt service Deadline

Page 38

Embedded Computing System(06CS74)

Interrupt servicing mechanism

Direct memory access

Page 39

Embedded Computing System(06CS74)

Device drivers programming

Page 40

Embedded Computing System(06CS74)

Linux device drivers

Page 41


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