[Solved] Identify the error in this code snippet using spidev: import spidev spi = spidev.SpiDev() spi.xfer2([0x01, 0x02]) spi.open(0, 0) spi.close() | Raspberry Pi

Raspberry Pi - SPI Communication

Identify the error in this code snippet using spidev:

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

ANot closing SPI device after use

BCalling xfer2() before opening SPI device

CUsing wrong method name xfer2()

DMissing import statement

Step-by-Step Solution

Solution:

Step 1: Check method call order
The xfer2() method requires the SPI device to be opened first with open().
Step 2: Identify the error
Here, xfer2() is called before open(), causing a runtime error.
Final Answer:
Calling xfer2() before opening SPI device -> Option B
Quick Check:
Open SPI before xfer2() call [OK]

Quick Trick: Always open SPI before using xfer2() [OK]

Common Mistakes:

MISTAKES

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Identify the error in this code snippet using spidev: