forked from DevOps/deploy.stack
106 lines
3.7 KiB
Python
106 lines
3.7 KiB
Python
# This example is for use on (Linux) computers that are using CPython with
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# Adafruit Blinka to support CircuitPython libraries. CircuitPython does
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# not support PIL/pillow (python imaging library)!
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import time
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import subprocess
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from board import SCL, SDA
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import busio
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from PIL import Image, ImageDraw, ImageFont
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import adafruit_ssd1306
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# Create the I2C interface.
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i2c = busio.I2C(SCL, SDA)
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# Create the SSD1306 OLED class.
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# The first two parameters are the pixel width and pixel height. Change these
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# to the right size for your display!
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disp = adafruit_ssd1306.SSD1306_I2C(128, 64, i2c)
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# Clear display.
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disp.fill(0)
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disp.show()
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# Create blank image for drawing.
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# Make sure to create image with mode '1' for 1-bit color.
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width = disp.width
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height = disp.height
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image = Image.new("1", (width, height))
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# Get drawing object to draw on image.
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draw = ImageDraw.Draw(image)
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# Draw a black filled box to clear the image.
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draw.rectangle((0, 0, width, height), outline=0, fill=0)
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# Draw some shapes.
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# First define some constants to allow easy resizing of shapes.
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padding = -2
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top = padding
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bottom = height - padding
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# Move left to right keeping track of the current x position for drawing shapes.
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x = 0
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# Load default font.
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#font = ImageFont.load_default()
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# Alternatively load a TTF font. Make sure the .ttf font file is in the
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# same directory as the python script!
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# Some other nice fonts to try: http://www.dafont.com/bitmap.php
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font = ImageFont.truetype('/usr/share/fonts/truetype/wqy/wqy-microhei.ttc', 11)
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font_clock = ImageFont.truetype('/usr/share/fonts/truetype/wqy/wqy-microhei.ttc', 24)
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font_date = ImageFont.truetype('/usr/share/fonts/truetype/wqy/wqy-microhei.ttc', 16)
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# 添加图像切换状态变量
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show_system_info = True
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last_switch_time = time.time()
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switch_interval = 5 # 5秒切换一次
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while True:
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# 检查是否需要切换图像
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current_time = time.time()
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if current_time - last_switch_time >= switch_interval:
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show_system_info = not show_system_info
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last_switch_time = current_time
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# Draw a black filled box to clear the image.
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draw.rectangle((0, 0, width, height), outline=0, fill=0)
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if show_system_info:
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# 显示系统信息
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# Shell scripts for system monitoring from here:
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# https://unix.stackexchange.com/questions/119126/command-to-display-memory-usage-disk-usage-and-cpu-load
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cmd = "hostname -I | cut -d' ' -f1"
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IP = subprocess.check_output(cmd, shell=True).decode("utf-8")
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cmd = 'cut -f 1 -d " " /proc/loadavg'
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CPU = subprocess.check_output(cmd, shell=True).decode("utf-8")
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cmd = "free -m | awk 'NR==2{printf \"Mem: %s/%s MB %.2f%%\", $3,$2,$3*100/$2 }'"
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MemUsage = subprocess.check_output(cmd, shell=True).decode("utf-8")
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cmd = 'df -h | awk \'$NF=="/data"{printf "Disk: %d/%d GB %s", $3,$2,$5}\''
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Disk = subprocess.check_output(cmd, shell=True).decode("utf-8")
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date_time = time.strftime("%Y-%m-%d, %H:%M:%S")
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# Write four lines of text.
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draw.text((x, top + 1), "IP: " + IP, font=font, fill=255)
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draw.text((x, top + 13), "CPU: " + CPU, font=font, fill=255)
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draw.text((x, top + 23), MemUsage, font=font, fill=255)
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draw.text((x, top + 35), Disk, font=font, fill=255)
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draw.text((x, top + 47), date_time, font=font, fill=255)
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else:
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# 显示时钟信息
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text = time.strftime("%A")
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draw.text((0, 0), text, font=font_date, fill=255)
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text = time.strftime("%Y-%m-%d")
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draw.text((0, 20), text, font=font_date, fill=255)
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text = time.strftime("%X")
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draw.text((0, 40), text, font=font_clock, fill=255)
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# Display image.
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disp.image(image)
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disp.show()
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time.sleep(0.1)
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