[Solved] Identify the error in this code snippet for initializing the LCD with I2C backpack:from RPLCD.i2c import CharLCD lcd = CharLCD(i2c_expander='PCF8574', address=0x3F) lcd.write_string('Test') | Raspberry Pi

Raspberry Pi - Display and Output

Identify the error in this code snippet for initializing the LCD with I2C backpack:

from RPLCD.i2c import CharLCD
lcd = CharLCD(i2c_expander='PCF8574', address=0x3F)
lcd.write_string('Test')

AMissing 'port' parameter for CharLCD initialization

BThe parameter name should be 'address' not 'i2c_expander'

CThe I2C address 0x3F is invalid for this device

DThe parameter 'i2c_expander' should be 'i2c_expander' but is correct here

Step-by-Step Solution

Solution:

Step 1: Check CharLCD parameters
CharLCD requires 'i2c_expander', 'address', and 'port' parameters for I2C setup.
Step 2: Identify missing parameter
The code misses the 'port' parameter, which is needed to specify the I2C bus number.
Final Answer:
Missing 'port' parameter for CharLCD initialization -> Option A
Quick Check:
Missing required 'port' parameter = A [OK]

Quick Trick: Always include 'port' when initializing CharLCD with I2C [OK]

Common Mistakes:

MISTAKES

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Identify the error in this code snippet for initializing the LCD with I2C backpack: