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Peripherals
DMA
DMA Interview Questions
10 questions in
Peripherals
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When should you use DMA instead of CPU-driven data transfers?
DMA
Transfer Fundamentals
foundational
0
What is the overhead of setting up a DMA transfer, and when does it outweigh the benefit?
DMA
Transfer Fundamentals
foundational
0
Why does memory alignment matter for DMA transfers?
DMA
Transfer Fundamentals
foundational
#4
0
How do circular buffers with Half-Transfer (HT) and Transfer-Complete (TC) interrupts work?
DMA
Modes and Configuration
foundational
#5
0
How does double buffering work in DMA, and how is it different from circular mode with HT/TC?
DMA
Modes and Configuration
foundational
#6
0
How does DMA channel priority and arbitration work?
DMA
Modes and Configuration
foundational
#7
0
Which peripherals are commonly paired with DMA, and what configurations are typical?
DMA
Modes and Configuration
foundational
#8
0
What is the cache coherency problem on Cortex-M7, and how do you solve it with DMA?
DMA
Cache and Performance
foundational
#9
0
What happens if the CPU and DMA access the same memory or peripheral simultaneously?
DMA
Cache and Performance
foundational
#10
0
How do you debug DMA transfers that appear to silently fail?
DMA
Cache and Performance
foundational