-#!/usr/bin/env python
+#!/usr/bin/env python3
import time
import colorsys
import os
import sys
import ST7735
-import ltr559
+try:
+ # Transitional fix for breaking change in LTR559
+ from ltr559 import LTR559
+ ltr559 = LTR559()
+except ImportError:
+ import ltr559
from bme280 import BME280
-from pms5003 import PMS5003
+from pms5003 import PMS5003, ReadTimeoutError as pmsReadTimeoutError
from enviroplus import gas
from subprocess import PIPE, Popen
from PIL import Image
from PIL import ImageDraw
from PIL import ImageFont
+from fonts.ttf import RobotoMedium as UserFont
+import logging
+
+logging.basicConfig(
+ format='%(asctime)s.%(msecs)03d %(levelname)-8s %(message)s',
+ level=logging.INFO,
+ datefmt='%Y-%m-%d %H:%M:%S')
-print("""all-in-one.py - Displays readings from all of Enviro plus' sensors
+logging.info("""all-in-one.py - Displays readings from all of Enviro plus' sensors
Press Ctrl+C to exit!
# Set up canvas and font
img = Image.new('RGB', (WIDTH, HEIGHT), color=(0, 0, 0))
draw = ImageDraw.Draw(img)
-path = os.path.dirname(os.path.realpath(__file__))
-font = ImageFont.truetype(path + "/fonts/Asap/Asap-Bold.ttf", 20)
+font_size = 20
+font = ImageFont.truetype(UserFont, font_size)
message = ""
# The position of the top bar
top_pos = 25
+
# Displays data and text on the 0.96" LCD
def display_text(variable, data, unit):
# Maintain length of list
values[variable] = values[variable][1:] + [data]
# Scale the values for the variable between 0 and 1
- colours = [(v - min(values[variable]) + 1) / (max(values[variable]) - min(values[variable]) + 1) for v in values[variable]]
+ colours = [(v - min(values[variable]) + 1) / (max(values[variable])
+ - min(values[variable]) + 1) for v in values[variable]]
# Format the variable name and value
message = "{}: {:.1f} {}".format(variable[:4], data, unit)
- print(message)
+ logging.info(message)
draw.rectangle((0, 0, WIDTH, HEIGHT), (255, 255, 255))
for i in range(len(colours)):
# Convert the values to colours from red to blue
colour = (1.0 - colours[i]) * 0.6
- r, g, b = [int(x * 255.0) for x in colorsys.hsv_to_rgb(colour, 1.0, 1.0)]
+ r, g, b = [int(x * 255.0) for x in colorsys.hsv_to_rgb(colour,
+ 1.0, 1.0)]
# Draw a 1-pixel wide rectangle of colour
draw.rectangle((i, top_pos, i+1, HEIGHT), (r, g, b))
# Draw a line graph in black
- line_y = HEIGHT - (top_pos + (colours[i] * (HEIGHT - top_pos))) + top_pos
+ line_y = HEIGHT - (top_pos + (colours[i] * (HEIGHT - top_pos)))\
+ + top_pos
draw.rectangle((i, line_y, i+1, line_y+1), (0, 0, 0))
# Write the text at the top in black
draw.text((0, 0), message, font=font, fill=(0, 0, 0))
st7735.display(img)
+
# Get the temperature of the CPU for compensation
def get_cpu_temperature():
- process = Popen(['vcgencmd', 'measure_temp'], stdout=PIPE)
+ process = Popen(['vcgencmd', 'measure_temp'], stdout=PIPE, universal_newlines=True)
output, _error = process.communicate()
return float(output[output.index('=') + 1:output.rindex("'")])
+
# Tuning factor for compensation. Decrease this number to adjust the
# temperature down, and increase to adjust up
-factor = 0.8
+factor = 2.25
-cpu_temps = [0] * 5
+cpu_temps = [get_cpu_temperature()] * 5
delay = 0.5 # Debounce the proximity tap
-mode = 0 # The starting mode
+mode = 0 # The starting mode
last_page = 0
light = 1
# One mode for each variable
if mode == 0:
- variable = "temperature"
+ # variable = "temperature"
unit = "C"
cpu_temp = get_cpu_temperature()
# Smooth out with some averaging to decrease jitter
avg_cpu_temp = sum(cpu_temps) / float(len(cpu_temps))
raw_temp = bme280.get_temperature()
data = raw_temp - ((avg_cpu_temp - raw_temp) / factor)
- display_text(variable, data, unit)
+ display_text(variables[mode], data, unit)
if mode == 1:
- variable = "pressure"
+ # variable = "pressure"
unit = "hPa"
data = bme280.get_pressure()
- display_text(variable, data, unit)
+ display_text(variables[mode], data, unit)
if mode == 2:
- variable = "humidity"
+ # variable = "humidity"
unit = "%"
data = bme280.get_humidity()
- display_text(variable, data, unit)
+ display_text(variables[mode], data, unit)
if mode == 3:
- variable = "light"
+ # variable = "light"
unit = "Lux"
if proximity < 10:
data = ltr559.get_lux()
else:
data = 1
- display_text(variable, data, unit)
+ display_text(variables[mode], data, unit)
if mode == 4:
- variable = "oxidised"
+ # variable = "oxidised"
unit = "kO"
data = gas.read_all()
data = data.oxidising / 1000
- display_text(variable, data, unit)
+ display_text(variables[mode], data, unit)
if mode == 5:
- variable = "reduced"
+ # variable = "reduced"
unit = "kO"
data = gas.read_all()
data = data.reducing / 1000
- display_text(variable, data, unit)
+ display_text(variables[mode], data, unit)
if mode == 6:
- variable = "nh3"
+ # variable = "nh3"
unit = "kO"
data = gas.read_all()
data = data.nh3 / 1000
- display_text(variable, data, unit)
+ display_text(variables[mode], data, unit)
if mode == 7:
- variable = "pm1"
+ # variable = "pm1"
unit = "ug/m3"
- data = pms5003.read()
- data = data.pm_ug_per_m3(1.0)
- display_text(variable, data, unit)
+ try:
+ data = pms5003.read()
+ except pmsReadTimeoutError:
+ logging.warn("Failed to read PMS5003")
+ else:
+ data = float(data.pm_ug_per_m3(1.0))
+ display_text(variables[mode], data, unit)
if mode == 8:
- variable = "pm25"
+ # variable = "pm25"
unit = "ug/m3"
- data = pms5003.read()
- data = data.pm_ug_per_m3(2.5)
- display_text(variable, data, unit)
+ try:
+ data = pms5003.read()
+ except pmsReadTimeoutError:
+ logging.warn("Failed to read PMS5003")
+ else:
+ data = float(data.pm_ug_per_m3(2.5))
+ display_text(variables[mode], data, unit)
if mode == 9:
- variable = "pm10"
- unit = "g/m3"
- data = pms5003.read()
- data = data.pm_ug_per_m3(10)
- display_text(variable, data, unit)
+ # variable = "pm10"
+ unit = "ug/m3"
+ try:
+ data = pms5003.read()
+ except pmsReadTimeoutError:
+ logging.warn("Failed to read PMS5003")
+ else:
+ data = float(data.pm_ug_per_m3(10))
+ display_text(variables[mode], data, unit)
# Exit cleanly
except KeyboardInterrupt:
projects / EVA-2020-02-2.git / blobdiff