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#!/usr/bin/python3
# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
# SPDX-License-Identifier: MIT
# -*- coding: utf-8 -*-
import time
import subprocess
import digitalio
import board
from PIL import Image, ImageDraw, ImageFont
from adafruit_rgb_display import st7789
# Configuration for CS and DC pins (these are FeatherWing defaults on M0/M4):
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 for drawing.
# Make sure to create image with mode 'RGB' for full color.
height = disp.width # we swap height/width to rotate it to landscape!
width = disp.height
image = Image.new("RGB", (width, height))
rotation = 90
# 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, 0, 0))
disp.image(image, rotation)
# 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
# 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", 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)
# 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 = "IP: " + 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")
cmd = "date +%X\ %d%b%y"
TimeDate = subprocess.check_output(cmd, shell=True).decode("utf-8")
cmd = "localtemp.py"
LocalTemp = subprocess.check_output(cmd, shell=True).decode("utf-8")
# Write four lines of text.
y = top
draw.text((x, y), IP, font=font, fill="#FFFFFF")
y += font.getsize(IP)[1]
draw.text((x, y), TimeDate, font=font, fill="#FFFF00")
y += font.getsize(TimeDate)[1]
draw.text((x, y), LocalTemp, font=font, fill="#00FF00")
y += font.getsize(LocalTemp)[1]
draw.text((x, y), Temp, font=font, fill="#FF00FF")
# Display image.
disp.image(image, rotation)
time.sleep(0.1)
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