Merge pull request #32 from kattni/update-tap-example

Update tap example to use interrupt. See comments.

Author: caternuson

examples/tap.py

@@ -4,34 +4,36 @@
 # Author: Tony DiCola
 import board
 import adafruit_lis3dh
+import busio
+import digitalio
 
 
 # Uncomment _one_ of the hardware setups below depending on your wiring:
 
 # Hardware I2C setup. Use the CircuitPlayground built-in accelerometer if available;
 # otherwise check I2C pins.
-import busio
 if hasattr(board, 'ACCELEROMETER_SCL'):
     i2c = busio.I2C(board.ACCELEROMETER_SCL, board.ACCELEROMETER_SDA)
-    lis3dh = adafruit_lis3dh.LIS3DH_I2C(i2c, address=0x19)
+    int1 = digitalio.DigitalInOut(board.ACCELEROMETER_INTERRUPT)
+    lis3dh = adafruit_lis3dh.LIS3DH_I2C(i2c, address=0x19, int1=int1)
 else:
     i2c = busio.I2C(board.SCL, board.SDA)
-    lis3dh = adafruit_lis3dh.LIS3DH_I2C(i2c)
+    int1 = digitalio.DigitalInOut(board.D10)  # Set this to the correct pin for the interrupt!
+    lis3dh = adafruit_lis3dh.LIS3DH_I2C(i2c, int1=int1)
 
 # Software I2C setup:
-#import bitbangio
-#i2c = bitbangio.I2C(board.SCL, board.SDA)
-#lis3dh = adafruit_lis3dh.LIS3DH_I2C(i2c)
+# import bitbangio
+# i2c = bitbangio.I2C(board.SCL, board.SDA)
+# lis3dh = adafruit_lis3dh.LIS3DH_I2C(i2c)
 
 # Hardware SPI setup:
-#import busio
-#spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
-#cs = busio.DigitalInOut(board.D6)  # Set to appropriate CS pin!
-#lis3dh = adafruit_lis3dh.LIS3DH_SPI(spi, cs)
-
+# import busio
+# spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
+# cs = busio.DigitalInOut(board.D6)  # Set to appropriate CS pin!
+# lis3dh = adafruit_lis3dh.LIS3DH_SPI(spi, cs)
 
 # Set range of accelerometer (can be RANGE_2_G, RANGE_4_G, RANGE_8_G or RANGE_16_G).
-lis3dh.range = adafruit_lis3dh.RANGE_2_G
+lis3dh.range = adafruit_lis3dh.RANGE_8_G
 
 # Set tap detection to double taps.  The first parameter is a value:
 #  - 0 = Disable tap detection.
@@ -43,13 +45,9 @@
 #  - 4G = 20-40 threshold
 #  - 8G = 10-20 threshold
 #  - 16G = 5-10 threshold
-lis3dh.set_tap(2, 80)
+lis3dh.set_tap(2, 60)
 
-# Loop forever printing if a double tap is detected. A single double tap may cause multiple
-# `tapped` reads to return true so we make sure the last once was False.
-last_tap = False
+# Loop forever printing if a double tap is detected.
 while True:
-    tap = lis3dh.tapped
-    if tap and not last_tap:
-        print('Double tap!')
-    last_tap = tap
+    if lis3dh.tapped:
+        print('Tapped!')