adding_displayIO_example

Author: JPOSADA202020

docs/examples.rst

@@ -33,3 +33,12 @@ The accelerometer can also be configured to detect taps.
 .. literalinclude:: ../examples/adxl34x_tap_detection_test.py
     :caption: examples/adxl34x_tap_detection_test.py
     :linenos:
+
+DisplayIO Simpletest
+---------------------
+
+This is a simple test for boards with built-in display.
+
+.. literalinclude:: ../examples/adxl34x_displayio_simpletest.py
+    :caption: examples/adxl34x_displayio_simpletest.py
+    :linenos:

examples/adxl34x_displayio_simpletest.py

@@ -0,0 +1,44 @@
+# 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_adxl34x
+
+
+# create a main_group to hold anything we want to show on the display.
+main_group = Group()
+
+i2c = board.I2C()  # uses board.SCL and board.SDA
+# i2c = board.STEMMA_I2C()  # For using the built-in STEMMA QT connector on a microcontroller
+
+# For ADXL343
+accelerometer = adafruit_adxl34x.ADXL343(i2c)
+# For ADXL345
+# accelerometer = adafruit_adxl34x.ADXL345(i2c)
+
+# Create a Label to show the readings. If you have a very small
+# display you may need to change to scale=1.
+display_output_label = Label(FONT, text="", scale=1)
+
+# place the label in the middle of the screen with anchored positioning
+display_output_label.anchor_point = (0, 0)
+display_output_label.anchored_position = (4, board.DISPLAY.height // 2)
+
+# add the label to the main_group
+main_group.append(display_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:
+    acceleration_x, acceleration_y, acceleration_z = accelerometer.acceleration
+    # Update the label.text property to change the text on the display
+    display_output_label.text = f"x:{acceleration_x:.1f} m/s^2 y:{acceleration_y:.1f} m/s^2 z:{acceleration_z:.1f} m/s^2"
+    # wait for a bit
+    time.sleep(1)