DevHeads IoT Integration Server•6mo ago

Troubleshooting BME280 Sensor Data Reading Issue on Raspberry Pi Pico with MicroPython

Hello, I am trying to interface a BME280 sensor with a Raspberry Pi Pico using MicroPython over I2C to monitor environmental conditions such as temperature, humidity, and pressure. However, I am encountering an issue with reading the sensor data, I have referred to the BME280 sensor documentation and the MicroPython library documentation to confirm the correct method for reading sensor data, I have examined the bme280 library code to verify the methods available for reading data from the sensor, I reinstalled the bme280 library to ensure it was correctly installed, I ran a simple I2C scan script to ensure that the BME280 sensor is properly connected and detected by the Raspberry Pi Pico.

i2c = I2C(0, scl=Pin(17), sda=Pin(16), freq=100000)
devices = i2c.scan()
print("I2C devices found:", devices)

i2c = I2C(0, scl=Pin(17), sda=Pin(16), freq=100000)
devices = i2c.scan()
print("I2C devices found:", devices)

But still getting the error

AttributeError: 'BME280' object has no attribute 'read_compensated_data'

AttributeError: 'BME280' object has no attribute 'read_compensated_data'

This is my code

from machine import I2C, Pin
import time
import bme280

# Initialize I2C
i2c = I2C(0, scl=Pin(17), sda=Pin(16), freq=100000)

# Create BME280 object
bme = bme280.BME280(i2c=i2c)

while True:
    temperature, pressure, humidity = bme.read_compensated_data()
    print(f"Temperature: {temperature/100:.2f} °C")
    print(f"Pressure: {pressure/256:.2f} hPa")
    print(f"Humidity: {humidity/1024:.2f} %")
    time.sleep(1)

from machine import I2C, Pin
import time
import bme280

# Initialize I2C
i2c = I2C(0, scl=Pin(17), sda=Pin(16), freq=100000)

# Create BME280 object
bme = bme280.BME280(i2c=i2c)

while True:
    temperature, pressure, humidity = bme.read_compensated_data()
    print(f"Temperature: {temperature/100:.2f} °C")
    print(f"Pressure: {pressure/256:.2f} hPa")
    print(f"Humidity: {humidity/1024:.2f} %")
    time.sleep(1)

@Middleware & OS

Solution:

Hello @Enthernet Code read_compensated_data() method doesn't exist in your BME280 library. Try adding this: ```...

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3 Replies

RED HAT•6mo ago

Hi @Enthernet Code It looks like the method read_compensated_data does not exist in the bme280 library you are using. You might want to check the documentation or the source code of the library to find the correct method for reading data from the sensor

Solution

wafa_ath•6mo ago

Hello @Enthernet Code read_compensated_data() method doesn't exist in your BME280 library. Try adding this:

while True:
    print(f"Temperature: {bme.temperature:.2f} °C")
    print(f"Pressure: {bme.pressure:.2f} hPa")
    print(f"Humidity: {bme.humidity:.2f} %")
    time.sleep(1)

while True:
    print(f"Temperature: {bme.temperature:.2f} °C")
    print(f"Pressure: {bme.pressure:.2f} hPa")
    print(f"Humidity: {bme.humidity:.2f} %")
    time.sleep(1)

If this doesn't work, check your BME280 library's version

Enthernet Code•6mo ago

okay would do

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Troubleshooting BME280 Sensor Data Reading Issue on Raspberry Pi Pico with MicroPython