express.py: adapt to 'audiocore' in circuitpython 5, retaining compatibility with earlier versions

examples/circuitplayground_acceleration_mapping_neopixels.py

@@ -1,48 +0,0 @@
-"""Maps acceleration (tilt) to Neopixel colors.
-
-x, y, and z acceleration components map to red, green and blue,
-respectively.
-
-When the CPX is level, the lights are blue because there is no acceleration
-on x or y, but on z, gravity pulls at 9.81 meters per second per second (m/s²).
-When banking, the vertical (z) axis is no longer directly aligned with gravity,
-so the blue decreases, and red increases because gravity is now pulling more
-along the x axis. Similarly, when changing the pitch from level, we see blue change
-to green.
-
-This video walks you through the code: https://youtu.be/eNpPLbYx-iA
-"""
-
-import time
-from adafruit_circuitplayground.express import cpx
-
-cpx.pixels.brightness = 0.2  # Adjust overall brightness as desired, between 0 and 1
-
-
-def color_amount(accel_component):
-    """Convert acceleration component (x, y, or z) to color amount (r, g, or b)"""
-    standard_gravity = 9.81  # Acceleration (m/s²) due to gravity at the earth’s surface
-    accel_magnitude = abs(accel_component)                      # Ignore the direction
-    constrained_accel = min(accel_magnitude, standard_gravity)  # Constrain values
-    normalized_accel = constrained_accel / standard_gravity     # Convert to 0–1
-    return round(normalized_accel * 255)                        # Convert to 0–255
-
-
-def format_acceleration():
-    return ', '.join(('{:>6.2f}'.format(axis_value) for axis_value in acceleration))
-
-
-def format_rgb():
-    return ', '.join(('{:>3d}'.format(rgb_amount) for rgb_amount in rgb_amounts))
-
-
-def log_values():
-    print('({}) ==> ({})'.format(format_acceleration(), format_rgb()))
-
-
-while True:
-    acceleration = cpx.acceleration
-    rgb_amounts = [color_amount(axis_value) for axis_value in acceleration]
-    cpx.pixels.fill(rgb_amounts)
-    log_values()
-    time.sleep(0.1)

examples/circuitplayground_acceleration_neopixels.py

@@ -18,4 +18,10 @@ while True:
         B = 0
         x, y, z = cpx.acceleration
         print((x, y, z))
-        cpx.pixels.fill(((R + abs(int(x))), (G + abs(int(y))), (B + abs(int(z)))))
+        if x:
+            R = R + abs(int(x))
+        if y:
+            G = G + abs(int(y))
+        if z:
+            B = B + abs(int(z))
+        cpx.pixels.fill((R, G, B))