2022年11月28日月曜日

Raspberry Pi でOLEDにmpd 曲名を追加(Python3 ver.)


Adafruit_Python_SSD1306
のサンプルスクリプトstats.pyにmpd の曲名を追加してみました Python3 ver.

Python2 も終わったので3対応かな。OSのver. upは未だですが。
(新しいmicroSD card未入手)



# apt install python3-pip
# pip3 install Adafruit-SSD1306
# pip3 install RPi.GPIO  <--- 必要か不明?!
# pip3 install pillow

[python script ]

#!/usr/bin/env python3

import os
import os.path
import re

import time

import Adafruit_GPIO.SPI as SPI
import Adafruit_SSD1306

from PIL import Image
from PIL import ImageDraw
from PIL import ImageFont

import subprocess

# Raspberry Pi pin configuration:
RST = 24
# Note the following are only used with SPI:
DC = 23
SPI_PORT = 0
SPI_DEVICE = 0


# Note you can change the I2C address by passing an i2c_address parameter like:
disp = Adafruit_SSD1306.SSD1306_128_64(rst=RST, i2c_address=0x3C)

# Initialize library.
disp.begin()

# Clear display.
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)

# 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()

## font2

font2 = ImageFont.truetype('/home/hogehoge/font/misakifont/misaki_gothic.ttf', 8, encoding='unic')

# 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('Minecraftia.ttf', 8)

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"
    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 = "uptime -p"
    Uptime = subprocess.check_output(cmd, shell = True )

    cmd = "mpc current"
    FullSongName = subprocess.check_output(cmd, shell = True )

    fo=os.path.basename(FullSongName)
    f=fo.decode('utf-8')
    regexp = re.compile("^[0-9]+ +|^[0-9]+-")
    if f=='':
       SongName=''
    else:
       fn, ext = os.path.splitext(f)
       pre = regexp.search(fn)
       if pre is None:
          SongName=fn
       else:
          SongName=fn.replace(pre.group(), "")

    # Write two lines of text.
    draw.text((x, top),       "IP: " + str(IP.decode('utf-8')),  font=font, fill=255)
    draw.text((x, top+8),    "CPU " + str(CPU.decode('utf-8')),  font=font, fill=255)
    draw.text((x, top+16),    str(MemUsage.decode('utf-8')),  font=font, fill=255)
    draw.text((x, top+25),    str(Disk.decode('utf-8')),  font=font, fill=255)
    draw.text((x, top+34),    str(Uptime.decode('utf-8')),  font=font, fill=255)
    draw.text((x, top+43),    SongName,  font=font2, fill=255)
   # Display image.
    disp.image(image)
    disp.display()
    time.sleep(30)

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