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Raspberry Pi - SPI Communication

What will be the output of this Python code snippet using spidev to send data to an SPI display?

import spidev
spi = spidev.SpiDev()
spi.open(0, 0)
response = spi.xfer2([0xAA, 0xBB, 0xCC])
print(response)

A[0xAA, 0xBB, 0xCC]

B[170, 187, 204]

C[0, 0, 0]

D[255, 255, 255]

Step-by-Step Solution

Solution:

Step 1: Understand spi.xfer2() behavior
spi.xfer2() sends bytes and returns the bytes received from the SPI slave device.
Step 2: Consider typical response from display
Most SPI displays do not send meaningful data back, so response is usually zeros for each byte sent.
Final Answer:
[0, 0, 0] -> Option C
Quick Check:
spi.xfer2() returns received bytes, usually zeros from display [OK]

Quick Trick: SPI transfer returns received bytes, often zeros from displays [OK]

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What will be the output of this Python code snippet using spidev to send data to an SPI display?