feat(examples/a): Add absolute dew point temperature display mode

[EVA-2020-02-2.git] / examples / combined.py

diff --git a/examples/combined.py b/examples/combined.py
old mode 100644 (file)
new mode 100755 (executable)
index e863de3..6c4ab6f
--- a/examples/combined.py
+++ b/examples/combined.py
@@ -1,8 +1,7 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3

 
 import time
 import colorsys
 
 import time
 import colorsys

-import os

 import sys
 import ST7735
 try:
 import sys
 import ST7735
 try:


@@ -13,12 +12,13 @@ except ImportError:
     import ltr559
 
 from bme280 import BME280
     import ltr559
 
 from bme280 import BME280

-from pms5003 import PMS5003, ReadTimeoutError as pmsReadTimeoutError
+from pms5003 import PMS5003, ReadTimeoutError as pmsReadTimeoutError, SerialTimeoutError

 from enviroplus import gas
 from subprocess import PIPE, Popen
 from PIL import Image
 from PIL import ImageDraw
 from PIL import ImageFont
 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(
 import logging
 
 logging.basicConfig(


@@ -26,7 +26,7 @@ logging.basicConfig(
     level=logging.INFO,
     datefmt='%Y-%m-%d %H:%M:%S')
 
     level=logging.INFO,
     datefmt='%Y-%m-%d %H:%M:%S')
 

-logging.info("""all-in-one.py - Displays readings from all of Enviro plus' sensors
+logging.info("""combined.py - Displays readings from all of Enviro plus' sensors

 
 Press Ctrl+C to exit!
 
 
 Press Ctrl+C to exit!
 


@@ -37,6 +37,7 @@ bme280 = BME280()
 
 # PMS5003 particulate sensor
 pms5003 = PMS5003()
 
 # PMS5003 particulate sensor
 pms5003 = PMS5003()

+time.sleep(1.0)

 
 # Create ST7735 LCD display class
 st7735 = ST7735.ST7735(
 
 # Create ST7735 LCD display class
 st7735 = ST7735.ST7735(


@@ -57,9 +58,10 @@ HEIGHT = st7735.height
 # Set up canvas and font
 img = Image.new('RGB', (WIDTH, HEIGHT), color=(0, 0, 0))
 draw = ImageDraw.Draw(img)
 # 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)
-smallfont = ImageFont.truetype(path + "/fonts/Asap/Asap-Bold.ttf", 10)
+font_size_small = 10
+font_size_large = 20
+font = ImageFont.truetype(UserFont, font_size_large)
+smallfont = ImageFont.truetype(UserFont, font_size_small)

 x_offset = 2
 y_offset = 2
 
 x_offset = 2
 y_offset = 2
 


@@ -104,23 +106,23 @@ units = ["C",
 # with NO WARRANTY. The authors of this example code claim
 # NO RESPONSIBILITY if reliance on the following values or this
 # code in general leads to ANY DAMAGES or DEATH.
 # with NO WARRANTY. The authors of this example code claim
 # NO RESPONSIBILITY if reliance on the following values or this
 # code in general leads to ANY DAMAGES or DEATH.

-limits = [[4,18,28,35],
-          [250,650,1013.25,1015],
-          [20,30,60,70],
-          [-1,-1,30000,100000],
-          [-1,-1,40,50],
-          [-1,-1,450,550],
-          [-1,-1,200,300],
-          [-1,-1,50,100],
-          [-1,-1,50,100],
-          [-1,-1,50,100]]
+limits = [[4, 18, 28, 35],
+          [250, 650, 1013.25, 1015],
+          [20, 30, 60, 70],
+          [-1, -1, 30000, 100000],
+          [-1, -1, 40, 50],
+          [-1, -1, 450, 550],
+          [-1, -1, 200, 300],
+          [-1, -1, 50, 100],
+          [-1, -1, 50, 100],
+          [-1, -1, 50, 100]]

 
 # RGB palette for values on the combined screen
 
 # RGB palette for values on the combined screen

-palette = [(0,0,255),           # Dangerously Low
-           (0,255,255),         # Low
-           (0,255,0),           # Normal
-           (255,255,0),         # High
-           (255,0,0)]           # Dangerously High
+palette = [(0, 0, 255),           # Dangerously Low
+           (0, 255, 255),         # Low
+           (0, 255, 0),           # Normal
+           (255, 255, 0),         # High
+           (255, 0, 0)]           # Dangerously High

 
 values = {}
 
 
 values = {}
 


@@ -130,8 +132,9 @@ 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
     # 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]]
+    vmin = min(values[variable])
+    vmax = max(values[variable])
+    colours = [(v - vmin + 1) / (vmax - vmin + 1) for v in values[variable]]

     # Format the variable name and value
     message = "{}: {:.1f} {}".format(variable[:4], data, unit)
     logging.info(message)
     # Format the variable name and value
     message = "{}: {:.1f} {}".format(variable[:4], data, unit)
     logging.info(message)


@@ -139,18 +142,17 @@ def display_text(variable, data, unit):
     for i in range(len(colours)):
         # Convert the values to colours from red to blue
         colour = (1.0 - colours[i]) * 0.6
     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 a 1-pixel wide rectangle of colour

-        draw.rectangle((i, top_pos, i+1, HEIGHT), (r, g, b))
+        draw.rectangle((i, top_pos, i + 1, HEIGHT), (r, g, b))

         # Draw a line graph in black
         # Draw a line graph in black

-        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))
+        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)
 
     # Write the text at the top in black
     draw.text((0, 0), message, font=font, fill=(0, 0, 0))
     st7735.display(img)
 

+

 # Saves the data to be used in the graphs later and prints to the log
 def save_data(idx, data):
     variable = variables[idx]
 # Saves the data to be used in the graphs later and prints to the log
 def save_data(idx, data):
     variable = variables[idx]


@@ -165,24 +167,23 @@ def save_data(idx, data):
 def display_everything():
     draw.rectangle((0, 0, WIDTH, HEIGHT), (0, 0, 0))
     column_count = 2
 def display_everything():
     draw.rectangle((0, 0, WIDTH, HEIGHT), (0, 0, 0))
     column_count = 2

-    row_count = (len(variables)/column_count)
-    for i in xrange(len(variables)):
+    row_count = (len(variables) / column_count)
+    for i in range(len(variables)):

         variable = variables[i]
         data_value = values[variable][-1]
         unit = units[i]
         variable = variables[i]
         data_value = values[variable][-1]
         unit = units[i]

-        x = x_offset + ((WIDTH/column_count) * (i / row_count))
-        y = y_offset + ((HEIGHT/row_count) * (i % row_count))
+        x = x_offset + ((WIDTH // column_count) * (i // row_count))
+        y = y_offset + ((HEIGHT / row_count) * (i % row_count))

         message = "{}: {:.1f} {}".format(variable[:4], data_value, unit)
         lim = limits[i]
         rgb = palette[0]
         message = "{}: {:.1f} {}".format(variable[:4], data_value, unit)
         lim = limits[i]
         rgb = palette[0]

-        for j in xrange(len(lim)):
+        for j in range(len(lim)):

             if data_value > lim[j]:
             if data_value > lim[j]:

-                rgb = palette[j+1]
+                rgb = palette[j + 1]

         draw.text((x, y), message, font=smallfont, fill=rgb)
     st7735.display(img)
 
 
         draw.text((x, y), message, font=smallfont, fill=rgb)
     st7735.display(img)
 
 

-

 # Get the temperature of the CPU for compensation
 def get_cpu_temperature():
     process = Popen(['vcgencmd', 'measure_temp'], stdout=PIPE, universal_newlines=True)
 # Get the temperature of the CPU for compensation
 def get_cpu_temperature():
     process = Popen(['vcgencmd', 'measure_temp'], stdout=PIPE, universal_newlines=True)


@@ -190,156 +191,158 @@ def get_cpu_temperature():
     return float(output[output.index('=') + 1:output.rindex("'")])
 
 
     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 = 1.95
-
-cpu_temps = [get_cpu_temperature()] * 5
-
-delay = 0.5  # Debounce the proximity tap
-mode = 10    # The starting mode
-last_page = 0
-light = 1
+def main():
+    # Tuning factor for compensation. Decrease this number to adjust the
+    # temperature down, and increase to adjust up
+    factor = 2.25
+
+    cpu_temps = [get_cpu_temperature()] * 5
+
+    delay = 0.5  # Debounce the proximity tap
+    mode = 10    # The starting mode
+    last_page = 0
+
+    for v in variables:
+        values[v] = [1] * WIDTH
+
+    # The main loop
+    try:
+        while True:
+            proximity = ltr559.get_proximity()
+
+            # If the proximity crosses the threshold, toggle the mode
+            if proximity > 1500 and time.time() - last_page > delay:
+                mode += 1
+                mode %= (len(variables) + 1)
+                last_page = time.time()
+
+            # One mode for each variable
+            if mode == 0:
+                # variable = "temperature"
+                unit = "C"
+                cpu_temp = get_cpu_temperature()
+                # Smooth out with some averaging to decrease jitter
+                cpu_temps = cpu_temps[1:] + [cpu_temp]
+                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(variables[mode], data, unit)

 
 

-for v in variables:
-    values[v] = [1] * WIDTH
+            if mode == 1:
+                # variable = "pressure"
+                unit = "hPa"
+                data = bme280.get_pressure()
+                display_text(variables[mode], data, unit)

 
 

-# The main loop
-try:
-    while True:
-        proximity = ltr559.get_proximity()
-
-        # If the proximity crosses the threshold, toggle the mode
-        if proximity > 1500 and time.time() - last_page > delay:
-            mode += 1
-            mode %= (len(variables)+1)
-            last_page = time.time()
-
-        # One mode for each variable
-        if mode == 0:
-            # variable = "temperature"
-            unit = "C"
-            cpu_temp = get_cpu_temperature()
-            # Smooth out with some averaging to decrease jitter
-            cpu_temps = cpu_temps[1:] + [cpu_temp]
-            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(variables[mode], data, unit)
-
-        if mode == 1:
-            # variable = "pressure"
-            unit = "hPa"
-            data = bme280.get_pressure()
-            display_text(variables[mode], data, unit)
-
-        if mode == 2:
-            # variable = "humidity"
-            unit = "%"
-            data = bme280.get_humidity()
-            display_text(variables[mode], data, unit)
-
-        if mode == 3:
-            # variable = "light"
-            unit = "Lux"
-            if proximity < 10:
-                data = ltr559.get_lux()
-            else:
-                data = 1
-            display_text(variables[mode], data, unit)
-
-        if mode == 4:
-            # variable = "oxidised"
-            unit = "kO"
-            data = gas.read_all()
-            data = data.oxidising / 1000
-            display_text(variables[mode], data, unit)
-
-        if mode == 5:
-            # variable = "reduced"
-            unit = "kO"
-            data = gas.read_all()
-            data = data.reducing / 1000
-            display_text(variables[mode], data, unit)
-
-        if mode == 6:
-            # variable = "nh3"
-            unit = "kO"
-            data = gas.read_all()
-            data = data.nh3 / 1000
-            display_text(variables[mode], data, unit)
-
-        if mode == 7:
-            # variable = "pm1"
-            unit = "ug/m3"
-            try:
-                data = pms5003.read()
-            except pmsReadTimeoutError:
-                logging.warn("Failed to read PMS5003")
-            else:
-                data = float(data.pm_ug_per_m3(1.0))
+            if mode == 2:
+                # variable = "humidity"
+                unit = "%"
+                data = bme280.get_humidity()

                 display_text(variables[mode], data, unit)
 
                 display_text(variables[mode], data, unit)
 

-        if mode == 8:
-            # variable = "pm25"
-            unit = "ug/m3"
-            try:
-                data = pms5003.read()
-            except pmsReadTimeoutError:
-                logging.warn("Failed to read PMS5003")
-            else:
-                data = float(data.pm_ug_per_m3(2.5))
+            if mode == 3:
+                # variable = "light"
+                unit = "Lux"
+                if proximity < 10:
+                    data = ltr559.get_lux()
+                else:
+                    data = 1

                 display_text(variables[mode], data, unit)
 
                 display_text(variables[mode], data, unit)
 

-        if mode == 9:
-            # 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))
+            if mode == 4:
+                # variable = "oxidised"
+                unit = "kO"
+                data = gas.read_all()
+                data = data.oxidising / 1000

                 display_text(variables[mode], data, unit)
                 display_text(variables[mode], data, unit)

-        if mode == 10:
-            # Everything on one screen
-            cpu_temp = get_cpu_temperature()
-            # Smooth out with some averaging to decrease jitter
-            cpu_temps = cpu_temps[1:] + [cpu_temp]
-            avg_cpu_temp = sum(cpu_temps) / float(len(cpu_temps))
-            raw_temp = bme280.get_temperature()
-            raw_data = raw_temp - ((avg_cpu_temp - raw_temp) / factor)
-            save_data(0, raw_data)
-            display_everything()
-            raw_data = bme280.get_pressure()
-            save_data(1, raw_data)
-            display_everything()
-            raw_data = bme280.get_humidity()
-            save_data(2, raw_data)
-            if proximity < 10:
-                raw_data = ltr559.get_lux()
-            else:
-                raw_data = 1
-            save_data(3, raw_data)
-            display_everything()
-            gas_data = gas.read_all()
-            save_data(4, gas_data.oxidising / 1000)
-            save_data(5, gas_data.reducing / 1000)
-            save_data(6, gas_data.nh3 / 1000)
-            display_everything()
-            pms_data = None
-            try:
-                pms_data = pms5003.read()
-            except pmsReadTimeoutError:
-                logging.warn("Failed to read PMS5003")
-            else:
-                save_data(7, float(pms_data.pm_ug_per_m3(1.0)))
-                save_data(8, float(pms_data.pm_ug_per_m3(2.5)))
-                save_data(9, float(pms_data.pm_ug_per_m3(10)))
-                display_everything()

 
 

+            if mode == 5:
+                # variable = "reduced"
+                unit = "kO"
+                data = gas.read_all()
+                data = data.reducing / 1000
+                display_text(variables[mode], data, unit)

 
 

+            if mode == 6:
+                # variable = "nh3"
+                unit = "kO"
+                data = gas.read_all()
+                data = data.nh3 / 1000
+                display_text(variables[mode], data, unit)

 
 

-# Exit cleanly
-except KeyboardInterrupt:
-    sys.exit(0)
+            if mode == 7:
+                # variable = "pm1"
+                unit = "ug/m3"
+                try:
+                    data = pms5003.read()
+                except pmsReadTimeoutError:
+                    logging.warning("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"
+                unit = "ug/m3"
+                try:
+                    data = pms5003.read()
+                except pmsReadTimeoutError:
+                    logging.warning("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 = "ug/m3"
+                try:
+                    data = pms5003.read()
+                except pmsReadTimeoutError:
+                    logging.warning("Failed to read PMS5003")
+                else:
+                    data = float(data.pm_ug_per_m3(10))
+                    display_text(variables[mode], data, unit)
+            if mode == 10:
+                # Everything on one screen
+                cpu_temp = get_cpu_temperature()
+                # Smooth out with some averaging to decrease jitter
+                cpu_temps = cpu_temps[1:] + [cpu_temp]
+                avg_cpu_temp = sum(cpu_temps) / float(len(cpu_temps))
+                raw_temp = bme280.get_temperature()
+                raw_data = raw_temp - ((avg_cpu_temp - raw_temp) / factor)
+                save_data(0, raw_data)
+                display_everything()
+                raw_data = bme280.get_pressure()
+                save_data(1, raw_data)
+                display_everything()
+                raw_data = bme280.get_humidity()
+                save_data(2, raw_data)
+                if proximity < 10:
+                    raw_data = ltr559.get_lux()
+                else:
+                    raw_data = 1
+                save_data(3, raw_data)
+                display_everything()
+                gas_data = gas.read_all()
+                save_data(4, gas_data.oxidising / 1000)
+                save_data(5, gas_data.reducing / 1000)
+                save_data(6, gas_data.nh3 / 1000)
+                display_everything()
+                pms_data = None
+                try:
+                    pms_data = pms5003.read()
+                except (SerialTimeoutError, pmsReadTimeoutError):
+                    logging.warning("Failed to read PMS5003")
+                else:
+                    save_data(7, float(pms_data.pm_ug_per_m3(1.0)))
+                    save_data(8, float(pms_data.pm_ug_per_m3(2.5)))
+                    save_data(9, float(pms_data.pm_ug_per_m3(10)))
+                    display_everything()
+
+    # Exit cleanly
+    except KeyboardInterrupt:
+        sys.exit(0)
+
+
+if __name__ == "__main__":
+    main()