ich möchte meinem Raspi im Desk-Pi ein OLED Display zur Anzeige von IP, Temperatur, Speicherauslastung, RAM und CPU-Auslastung gönnen. Im Internet gibt es in diversen Tutorials zur Anzeige der Parameter ein für mich grundsätzlich perfekt geeignetes Python Script.
Ich würde jedoch gerne in der dritten Display-Zeile "Mem" die prozentuelle Memory-Anzeige ohne Nachkommastellen darstellen, da die letzten beiden Ziffern aufgrund der Displaygröße abgeschnitten werden. Aktuell sind es 2 Nachkommastellen.
Was Python betrifft, bin ich leider völlig blank. In der (vermutlich zutreffenden) Code-Zeile
Code: Alles auswählen
cmd = "free -m | awk 'NR==2{printf \"Mem: %s/%sMB %.2f%%\", $3,$2,$3*100/$2 }'"
Danke vielmals für Eure Hilfe
Code: Alles auswählen
# SPDX-FileCopyrightText: 2017 Tony DiCola for Adafruit Industries
# SPDX-FileCopyrightText: 2017 James DeVito for Adafruit Industries
# SPDX-License-Identifier: MIT
# This example is for use on (Linux) computers that are using CPython with
# Adafruit Blinka to support CircuitPython libraries. CircuitPython does
# not support PIL/pillow (python imaging library)!
import time
import subprocess
from board import SCL, SDA
import busio
from PIL import Image, ImageDraw, ImageFont
import adafruit_ssd1306
# Create the I2C interface.
i2c = busio.I2C(SCL, SDA)
# Create the SSD1306 OLED class.
# The first two parameters are the pixel width and pixel height. Change these
# to the right size for your display!
disp = adafruit_ssd1306.SSD1306_I2C(128, 32, i2c)
# Clear display.
disp.fill(0)
disp.show()
# 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)
# Draw a black filled box to clear the image.
draw.rectangle((0, 0, width, height), outline=0, fill=0)
# Draw some shapes.
# First define some constants to allow easy resizing of shapes.
padding = -2
top = padding
bottom = height - padding
# Move left to right keeping track of the current x position for drawing shapes.
x = 0
# Load default font.
font = ImageFont.load_default()
# Alternatively load a TTF font. Make sure the .ttf font file is in the
# same directory as the python script!
# Some other nice fonts to try: http://www.dafont.com/bitmap.php
# font = ImageFont.truetype('/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf', 9)
while True:
# Draw a black filled box to clear the image.
draw.rectangle((0, 0, width, height), outline=0, fill=0)
# Shell scripts for system monitoring from here:
# https://unix.stackexchange.com/questions/119126/command-to-display-memory-usage-disk-usage-and-cpu-load
cmd = "hostname -I | cut -d\' \' -f1"
#cmd = "hostname -I |cut -f 2 -d ' '"
IP = subprocess.check_output(cmd, shell = True )
cmd = "top -bn1 | grep load | awk '{printf \"CPU Load: %.2f\", $(NF-2)}'"
CPU = subprocess.check_output(cmd, shell = True )
cmd = "free -m | awk 'NR==2{printf \"Mem: %s/%sMB %.2f%%\", $3,$2,$3*100/$2 }'"
MemUsage = subprocess.check_output(cmd, shell = True )
cmd = "df -h | awk '$NF==\"/\"{printf \"Disk: %d/%dGB %s\", $3,$2,$5}'"
Disk = subprocess.check_output(cmd, shell = True )
cmd = "vcgencmd measure_temp |cut -f 2 -d '='"
temp = subprocess.check_output(cmd, shell = True )
#cmd = "hostname -I | cut -d' ' -f1"
#IP = subprocess.check_output(cmd, shell=True).decode("utf-8")
#cmd = 'cut -f 1 -d " " /proc/loadavg'
#CPU = subprocess.check_output(cmd, shell=True).decode("utf-8")
#cmd = "free -m | awk 'NR==2{printf \"Mem: %s/%s MB %.2f%%\", $3,$2,$3*100/$2 }'"
#MemUsage = subprocess.check_output(cmd, shell=True).decode("utf-8")
#cmd = 'df -h | awk \'$NF=="/"{printf "Disk: %d/%d GB %s", $3,$2,$5}\''
#Disk = subprocess.check_output(cmd, shell=True).decode("utf-8")
# Write four lines of text.
draw.text((x, top), "IP: " + str(IP,'utf-8'), font=font, fill=255)
draw.text((x, top+8), str(CPU,'utf-8') + " " + str(temp,'utf-8') , font=font, fill=255)
draw.text((x, top+16), str(MemUsage,'utf-8'), font=font, fill=255)
draw.text((x, top+25), str(Disk,'utf-8'), font=font, fill=255)
#draw.text((x, top), "IP: " + str(IP), font=font, fill=255)
#draw.text((x, top+8), str(CPU), font=font, fill=255)
#draw.text((x, top+16), str(MemUsage), font=font, fill=255)
#draw.text((x, top+25), str(Disk), font=font, fill=255)
#draw.text((x, top + 0), "IP: " + IP, font=font, fill=255)
#draw.text((x, top + 8), "CPU load: " + CPU, font=font, fill=255)
#draw.text((x, top + 16), MemUsage, font=font, fill=255)
#draw.text((x, top + 25), Disk, font=font, fill=255)
# Display image.
disp.image(image)
disp.show()
time.sleep(0.1)