You want to read multiple bytes starting from register 0x00 of a device at address 0x60 using smbus2. Which approach correctly reads 4 bytes into a list?

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Raspberry Pi - I2C Communication

You want to read multiple bytes starting from register 0x00 of a device at address 0x60 using smbus2. Which approach correctly reads 4 bytes into a list?

Adata = bus.read_bytes(0x60, 0x00, 4)

Bdata = bus.read_byte_data(0x60, 0x00, 4)

Cdata = [bus.read_byte_data(0x60, reg) for reg in range(0x00, 0x04)]

Ddata = bus.read_i2c_block_data(0x60, 0x00, 4)

Step-by-Step Solution

Solution:

Step 1: Understand methods for reading multiple bytes
read_i2c_block_data(address, register, length) reads a block of bytes starting at register.
Step 2: Identify correct method usage
data = bus.read_i2c_block_data(0x60, 0x00, 4) uses read_i2c_block_data with correct parameters to read 4 bytes.
Final Answer:
data = bus.read_i2c_block_data(0x60, 0x00, 4) -> Option D
Quick Check:
Use read_i2c_block_data for multiple bytes [OK]

Quick Trick: Use read_i2c_block_data to read multiple bytes at once [OK]

Common Mistakes:

MISTAKES

Trying to pass length to read_byte_data
Using non-existent read_bytes method
Reading bytes one by one inefficiently

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You want to read multiple bytes starting from register 0x00 of a device at address 0x60 using smbus2. Which approach correctly reads 4 bytes into a list?

Step 1: Understand methods for reading multiple bytes

Step 2: Identify correct method usage

Final Answer:

Quick Check:

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