Merge pull request #45 from jposada202020/adding_displayio_example

adding_displayio_example

Author: FoamyGuy

docs/examples.rst

@@ -16,3 +16,12 @@ parameters supported by the sensor.
 .. literalinclude:: ../examples/bmp280_normal_mode.py
     :caption: examples/bmp280_normal_mode.py
     :linenos:
+
+DisplayIO Simpletest
+---------------------
+
+This is a simple test for boards with built-in display.
+
+.. literalinclude:: ../examples/bmp280_displayio_simpletest.py
+    :caption: examples/bmp280_displayio_simpletest.py
+    :linenos:

examples/bmp280_displayio_simpletest.py

@@ -0,0 +1,53 @@
+# SPDX-FileCopyrightText: 2024 Tim Cocks for Adafruit Industries
+# SPDX-FileCopyrightText: 2024 Jose D. Montoya
+#
+# SPDX-License-Identifier: MIT
+
+import time
+import board
+from adafruit_display_text.bitmap_label import Label
+from terminalio import FONT
+from displayio import Group
+import adafruit_bmp280
+
+# Simple demo of the BMP280 barometric pressure sensor.
+# create a main_group to hold anything we want to show on the display.
+main_group = Group()
+# Initialize I2C bus and sensor.
+i2c = board.I2C()  # uses board.SCL and board.SDA
+bmp280 = adafruit_bmp280.Adafruit_BMP280_I2C(i2c)
+
+# change this to match the location's pressure (hPa) at sea level
+bmp280.sea_level_pressure = 1013.25
+
+# Create two Labels to show the readings. If you have a very small
+# display you may need to change to scale=1.
+tempandpress_output_label = Label(FONT, text="", scale=2)
+altitude_output_label = Label(FONT, text="", scale=2)
+
+# place the labels in the middle of the screen with anchored positioning
+tempandpress_output_label.anchor_point = (0, 0)
+tempandpress_output_label.anchored_position = (
+    4,
+    board.DISPLAY.height // 2 - 40,
+)
+altitude_output_label.anchor_point = (0, 0)
+altitude_output_label.anchored_position = (4, board.DISPLAY.height // 2 + 20)
+
+
+# add the label to the main_group
+main_group.append(tempandpress_output_label)
+main_group.append(altitude_output_label)
+
+# set the main_group as the root_group of the built-in DISPLAY
+board.DISPLAY.root_group = main_group
+
+# begin main loop
+while True:
+    # Update the label.text property to change the text on the display
+    tempandpress_output_label.text = (
+        f"Temperature:{bmp280.temperature:0.1f} C \nPressure:{bmp280.pressure:0.1f} hPa"
+    )
+    altitude_output_label.text = f"Altitude:{bmp280.altitude:0.2f} mts"
+    # wait for a bit
+    time.sleep(2.0)