examples: Add temp_pressure_display for wsen-pads.

Author: Charly-sketch

lib/wsen-pads/examples/temp_pressure_display.py

@@ -0,0 +1,43 @@
+"""
+Read temperature and pressure, format a nice display with units and a simple bar graph using # characters to visualize pressure (e.g. 1013.2 hPa [##########-----])
+"""
+from machine import I2C
+from time import sleep
+
+from wsen_pads import WSEN_PADS
+
+TEMP_MIN = 15.0
+TEMP_MAX = 30.0
+PRESS_MIN = 1020.0
+PRESS_MAX = 1023.0
+
+
+i2c = I2C(1)
+sensor = WSEN_PADS(i2c)
+
+def bar_graph(value, vmin, vmax, width=20):
+    # Clamp value
+    if value < vmin:
+        value = vmin
+    elif value > vmax:
+        value = vmax
+
+    ratio = (value - vmin) / (vmax - vmin)
+    filled = int(ratio * width)
+
+    return "[" + "#" * filled + "-" * (width - filled) + "]"
+
+while True:
+    temp = sensor.temperature()
+    pressure = sensor.pressure_hpa()
+
+    temp_bar = bar_graph(temp, TEMP_MIN, TEMP_MAX)
+    press_bar = bar_graph(pressure, PRESS_MIN, PRESS_MAX)
+
+    line = "T:{:5.1f}°C {} | P:{:6.1f}hPa {}".format(
+        temp, temp_bar, pressure, press_bar
+    )
+
+    print("\r" + line, end="")
+
+    sleep(1)