4 replies

Continuous Distance Measurement and OLED Update on BeagleBone Black with VL53L0X

Hello guys, based on my project parking assistance system using a

BeagleBone Black

BeagleBone Black

running Embedded Linux,

VL53L0X

VL53L0X

time of flight distance sensor to detect the distance to nearby objects and a

0.96-inch OLED

0.96-inch OLED

display to show the distance and warning messages. how do I continuously measure the distance using the

VL53L0X

VL53L0X

sensor and update the

OLED

OLED

display with the readings?
I have added debug prints, checked for memory issues, ensured proper handling of the

OLED

OLED

display but am getting the error prompt

Error: ValueError: I/O operation on closed file

Error: ValueError: I/O operation on closed file

here's my code

import board
import busio
import adafruit_vl53l0x
from Adafruit_SSD1306 import SSD1306_128_64
import time

# Initialize I2C bus and devices
i2c = busio.I2C(board.SCL, board.SDA)
vl53 = adafruit_vl53l0x.VL53L0X(i2c)
disp = SSD1306_128_64(rst=None)
disp.begin()
disp.clear()
disp.display()

while True:
    distance = vl53.range
    print(f"Distance: {distance} mm")

    disp.clear()
    disp.text(f"Distance: {distance} mm", 0, 0, 1)
    disp.display()

    time.sleep(1)

import board
import busio
import adafruit_vl53l0x
from Adafruit_SSD1306 import SSD1306_128_64
import time

# Initialize I2C bus and devices
i2c = busio.I2C(board.SCL, board.SDA)
vl53 = adafruit_vl53l0x.VL53L0X(i2c)
disp = SSD1306_128_64(rst=None)
disp.begin()
disp.clear()
disp.display()

while True:
    distance = vl53.range
    print(f"Distance: {distance} mm")

    disp.clear()
    disp.text(f"Distance: {distance} mm", 0, 0, 1)
    disp.display()

    time.sleep(1)

Solution

Hello,Your setup is okay, but the

ValueError: I/O operation on closed file

ValueError: I/O operation on closed file

error seems to points to an issue with how the

OLED

OLED

display or

I2C

I2C

bus is being managed. Make sure the

OLED

OLED

is properly initialized and stays active. You might also want to wrap your

loop

loop

in a

try-except

try-except

block to catch

errors

errors

and prevent the display from closing unexpectedly. re-check your wiring as well. Here's a quick fix:

try:
    while True:
        # Your code to read distance and update the display
except ValueError as e:
    print(f"An error occurred: {e}")

try:
    while True:
        # Your code to read distance and update the display
except ValueError as e:
    print(f"An error occurred: {e}")

@Boss lady

Jump to solution

Continuous Distance Measurement and OLED Update on BeagleBone Black with VL53L0X

Hello guys, based on my project parking assistance system using a

BeagleBone Black

BeagleBone Black

running Embedded Linux,

VL53L0X

VL53L0X

time of flight distance sensor to detect the distance to nearby objects and a

0.96-inch OLED

0.96-inch OLED

display to show the distance and warning messages. how do I continuously measure the distance using the

VL53L0X

VL53L0X

sensor and update the

OLED

OLED

display with the readings?
I have added debug prints, checked for memory issues, ensured proper handling of the

OLED

OLED

display but am getting the error prompt

Error: ValueError: I/O operation on closed file

Error: ValueError: I/O operation on closed file

here's my code

import board
import busio
import adafruit_vl53l0x
from Adafruit_SSD1306 import SSD1306_128_64
import time

# Initialize I2C bus and devices
i2c = busio.I2C(board.SCL, board.SDA)
vl53 = adafruit_vl53l0x.VL53L0X(i2c)
disp = SSD1306_128_64(rst=None)
disp.begin()
disp.clear()
disp.display()

while True:
    distance = vl53.range
    print(f"Distance: {distance} mm")

    disp.clear()
    disp.text(f"Distance: {distance} mm", 0, 0, 1)
    disp.display()

    time.sleep(1)

import board
import busio
import adafruit_vl53l0x
from Adafruit_SSD1306 import SSD1306_128_64
import time

# Initialize I2C bus and devices
i2c = busio.I2C(board.SCL, board.SDA)
vl53 = adafruit_vl53l0x.VL53L0X(i2c)
disp = SSD1306_128_64(rst=None)
disp.begin()
disp.clear()
disp.display()

while True:
    distance = vl53.range
    print(f"Distance: {distance} mm")

    disp.clear()
    disp.text(f"Distance: {distance} mm", 0, 0, 1)
    disp.display()

    time.sleep(1)

Solution

Hello,Your setup is okay, but the

ValueError: I/O operation on closed file

ValueError: I/O operation on closed file

error seems to points to an issue with how the

OLED

OLED

display or

I2C

I2C

bus is being managed. Make sure the

OLED

OLED

is properly initialized and stays active. You might also want to wrap your

loop

loop

in a

try-except

try-except

block to catch

errors

errors

and prevent the display from closing unexpectedly. re-check your wiring as well. Here's a quick fix:

try:
    while True:
        # Your code to read distance and update the display
except ValueError as e:
    print(f"An error occurred: {e}")

try:
    while True:
        # Your code to read distance and update the display
except ValueError as e:
    print(f"An error occurred: {e}")

@Boss lady

Jump to solution

Continuous Distance Measurement and OLED Update on BeagleBone Black with VL53L0X

Continuous Distance Measurement and OLED Update on BeagleBone Black with VL53L0X

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