Raspberry Pi - Serial UART Communication
You want to connect a temperature sensor to Raspberry Pi using serial communication. The sensor sends data at 4800 baud. Which setup is correct to read data continuously and print it line by line?
You want to connect a temperature sensor to Raspberry Pi using serial communication. The sensor sends data at 4800 baud. Which setup is correct to read data continuously and print it line by line?
hard🚀 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Match baud rate and port for continuous reading
Sensor uses 4800 baud, so serial.Serial('/dev/ttyS0', 4800) matches speed and port.Step 2: Use readline() in a loop for line-by-line reading
Using readline() reads until newline, decode() converts bytes to string, strip() removes extra spaces, and print() outputs lines continuously.Final Answer:
import serial ser = serial.Serial('/dev/ttyS0', 4800) while True: line = ser.readline().decode().strip() print(line) -> Option AQuick Check:
Correct baud + readline loop = continuous line reading [OK]
Quick Trick: Use readline() with correct baud rate for continuous sensor data [OK]
Common Mistakes:
MISTAKES- Using wrong baud rate causing no data
- Reading fixed bytes instead of lines
- Using wrong port name for device
Master "Serial UART Communication" in Raspberry Pi
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