Created
December 19, 2022 18:14
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Display all network interfaces' IP address on an I2C OLED screen connected over GPIO
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| """ Display all network interfaces' IP address on an I2C OLED screen connected over GPIO (mainly for a raspberry pi) """ | |
| import socket | |
| import time | |
| from PIL import Image | |
| from PIL import ImageDraw | |
| from PIL import ImageFont | |
| import Adafruit_GPIO.SPI as SPI | |
| import Adafruit_SSD1306 | |
| import RPi.GPIO as GPIO | |
| import netifaces | |
| GPIO.setmode(GPIO.BCM) | |
| RST = 24 | |
| disp = Adafruit_SSD1306.SSD1306_128_64(rst=RST, i2c_address=0x3C) | |
| def get_ip(): | |
| s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) | |
| s.connect(("8.8.8.8", 80)) | |
| ip_addr = s.getsockname()[0] | |
| s.close() | |
| return ip_addr | |
| def all_ips(): | |
| ip = dict() | |
| for interface in netifaces.interfaces(): | |
| try: | |
| out = netifaces.ifaddresses(interface)[netifaces.AF_INET] | |
| except KeyError: | |
| ip[interface] = "X_X" | |
| else: | |
| ip[interface] = out[0]["addr"] | |
| return ip | |
| def main(): | |
| # Setup display | |
| disp.begin() | |
| disp.clear() | |
| disp.display() | |
| # Create blank image for drawing. | |
| # Make sure to create image with mode '1' for 1-bit color. | |
| width = disp.width | |
| height = disp.height | |
| image = Image.new('1', (width, height)) | |
| # Get drawing object to draw on image. | |
| draw = ImageDraw.Draw(image) | |
| font = ImageFont.load_default() | |
| # Draw a black filled box to clear the image. | |
| draw.rectangle((0,0,width,height), outline=0, fill=0) | |
| def draw_text(text, line=0): | |
| draw.text((5, 5 + line * 10), text, font=font, fill=1) | |
| # Check & redraw IP address | |
| old_ip = "" | |
| try: | |
| while 1: # Try forever because this is an example | |
| ip_addr = "" | |
| for key, value in all_ips().items(): | |
| ip_addr += f"{key}:{value}\n" | |
| if ip_addr != old_ip: | |
| draw.rectangle((0,0,width,height), outline=0, fill=0) | |
| old_ip = ip_addr | |
| if ip_addr: | |
| draw_text(ip_addr) | |
| else: | |
| draw_text("Searching for Wi-Fi...") | |
| disp.image(image) | |
| disp.display() | |
| time.sleep(.01) | |
| except KeyboardInterrupt: | |
| GPIO.cleanup() | |
| if __name__ == '__main__': | |
| main() |
original credit/fork of: rfong/I2C_SSD1306_ipaddr.py
script modified to display IP addresses detected on all interfaces
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Co-Authored by @RoguedBear