[Solved] What will be the output of the following code snippet? import spidev spi = spidev.SpiDev() spi.open(0, 0) response = spi.xfer2([0x01, 0x02, 0x03]) spi.close() print(response) | Raspberry Pi

Raspberry Pi - SPI Communication

What will be the output of the following code snippet?

import spidev
spi = spidev.SpiDev()
spi.open(0, 0)
response = spi.xfer2([0x01, 0x02, 0x03])
spi.close()
print(response)

A[1, 2, 3]

B[0, 0, 0]

CA list of bytes received from the SPI device

DSyntaxError

Step-by-Step Solution

Solution:

Step 1: Understand spi.xfer2() behavior
The xfer2() method sends bytes and returns a list of bytes received from the SPI device.
Step 2: Analyze the code output
The output depends on the connected SPI device's response, so it returns a list of received bytes, not necessarily the same as sent.
Final Answer:
A list of bytes received from the SPI device -> Option C
Quick Check:
xfer2() returns received bytes list [OK]

Quick Trick: xfer2() returns device response bytes list [OK]

Common Mistakes:

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