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raspap-webgui/app/pitft/stats.py

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# -*- coding: utf-8 -*-
#
# Author: @billz
# Author URI: https://github.com/billz
# Description: RaspAP stats display for the Adafruit Mini PiTFT,
# a 135x240 Color TFT add-on for the Raspberry Pi.
# Based on Adafruit's rgb_display_ministats.py
# See: https://github.com/adafruit/Adafruit_CircuitPython_RGB_Display
# License: MIT License
import time
import subprocess
import digitalio
import board
from PIL import Image, ImageDraw, ImageFont
import adafruit_rgb_display.st7789 as st7789
# Configuration for CS and DC pins
cs_pin = digitalio.DigitalInOut(board.CE0)
dc_pin = digitalio.DigitalInOut(board.D25)
reset_pin = None
# Config for display baudrate (default max is 24mhz)
BAUDRATE = 64000000
# Setup SPI bus using hardware SPI
spi = board.SPI()
# Create the ST7789 display
disp = st7789.ST7789(spi, cs=cs_pin, dc=dc_pin, rst=reset_pin, baudrate=BAUDRATE,
width=135, height=240, x_offset=53, y_offset=40)
# Create blank image with mode 'RGB'
height = disp.width # swap height/width to rotate it to landscape
width = disp.height
image = Image.new('RGB', (width, height))
rotation = 90
# Get a drawing object and clear the image
draw = ImageDraw.Draw(image)
draw.rectangle((0, 0, width, height), outline=0, fill=(0, 0, 0))
disp.image(image,rotation)
# Define some constants
padding = -2
top = padding
bottom = height-padding
# Move left to right keeping track of the current x position
x = 0
# Load DejaVu TTF Font
# Install with: sudo apt-get install ttf-dejavu
font = ImageFont.truetype('/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf', 24)
# Turn on the backlight
backlight = digitalio.DigitalInOut(board.D22)
backlight.switch_to_output()
backlight.value = True
while True:
# Draw a black filled box to clear the image
draw.rectangle((0, 0, width, height), outline=0, fill=0)
# Collect basic system stats
cmd = "hostname -I | cut -d\' \' -f1"
IP = "IP: "+subprocess.check_output(cmd, shell=True).decode("utf-8")
cmd = "pidof hostapd | wc -l | awk '{printf \"Hotspot: %s\", $1 == 1 ? \"Active\" : \"Down\"}'"
Hostapd = subprocess.check_output(cmd, shell=True).decode("utf-8")
cmd = "vnstat -i wlan0 | grep tx: | awk '{printf \"Data Tx: %d %s\", $5,$6}'"
DataTx = subprocess.check_output(cmd, shell=True).decode("utf-8")
cmd = "top -bn1 | grep load | awk '{printf \"CPU Load: %.2f\", $(NF-2)}'"
CPU = subprocess.check_output(cmd, shell=True).decode("utf-8")
cmd = "free -m | awk 'NR==2{printf \"Mem: %sMB %.2f%%\", $3,$3*100/$2 }'"
MemUsage = subprocess.check_output(cmd, shell=True).decode("utf-8")
cmd = "cat /sys/class/thermal/thermal_zone0/temp | awk \'{printf \"CPU Temp: %.1f C\", $(NF-0) / 1000}\'" # pylint: disable=line-too-long
Temp = subprocess.check_output(cmd, shell=True).decode("utf-8")
# Write five lines of stats
y = top
draw.text((x, y), IP, font=font, fill="#ffaaaa")
y += font.getsize(IP)[1]
draw.text((x, y), Hostapd, font=font, fill="#d46a6a")
y += font.getsize(Hostapd)[1]
draw.text((x, y), DataTx, font=font, fill="#aa3939")
y += font.getsize(DataTx)[1]
draw.text((x, y), MemUsage, font=font, fill="#801515")
y += font.getsize(MemUsage)[1]
draw.text((x, y), Temp, font=font, fill="#550000")
# Display image
disp.image(image, rotation)
time.sleep(.1)