Merge branch 'master' into master

Author: ladyada

Adafruit_STEMMA_Speaker/STEMMA_Speaker_CPX_play_file.py

@@ -0,0 +1,7 @@
+from adafruit_circuitplayground.express import cpx
+
+while True:
+    if cpx.button_a:
+        cpx.play_file("rise.wav")
+    if cpx.button_b:
+        cpx.play_file("dip.wav")

Adafruit_STEMMA_Speaker/STEMMA_Speaker_CPX_play_tone.py

@@ -0,0 +1,7 @@
+from adafruit_circuitplayground.express import cpx
+
+while True:
+    if cpx.button_a:
+        cpx.play_tone(260, 1)
+    if cpx.button_b:
+        cpx.play_tone(292, 1)

Adafruit_STEMMA_Speaker/dip.wav

@@ -85,6 +85,8 @@ void setup(void) {
   Serial.begin(115200);
   randomSeed(analogRead(A3)); // Seed random() from floating analog input
 
+  pinMode(MOTION_SENSOR_PIN, INPUT);
+
 #ifdef DISPLAY_BACKLIGHT
   // Enable backlight pin, initially off
   pinMode(DISPLAY_BACKLIGHT, OUTPUT);

Adafruit_STEMMA_Speaker/rise.wav

@@ -0,0 +1,16 @@
+# Adafruit Learning System tutorial - A CircuitPython BLE Client & Server
+
+Use Bluetooth to turn a server on and off and actively sense the server's status light
+
+Follow the Adafruit learn guide here: https://learn.adafruit.com/circuitpython-ble-client-server/
+
+Adafruit invests time and resources providing this open source code,
+please support Adafruit and open-source hardware by purchasing
+products from [Adafruit](https://www.adafruit.com)!
+ 
+MIT license, project and code by rdagger
+
+All text above, and the splash screen below must be included in any redistribution
+
+-----------------------
+If you are looking to make changes/additions, please use the GitHub Issues and Pull Request mechanisms.