Updates for ItsyBitsy M4

CircuitPython_Essentials/CircuitPython_DotStar.py

@@ -1,13 +1,10 @@
 # CircuitPython demo - Dotstar
-
 import time
-
 import adafruit_dotstar
 import board
 
 num_pixels = 30
-pixels = adafruit_dotstar.DotStar(
-    board.A1, board.A2, num_pixels, brightness=0.1, auto_write=False)
+pixels = adafruit_dotstar.DotStar(board.A1, board.A2, num_pixels, brightness=0.1, auto_write=False)
 
 
 def wheel(pos):

CircuitPython_Essentials/CircuitPython_Internal_RGB_LED_colors.py

@@ -1,7 +1,7 @@
 import time
 import board
 
-# For Trinket M0, Gemma M0, and ItsyBitsy M0 Express
+# For Trinket M0, Gemma M0, ItsyBitsy M0 Express, and ItsyBitsy M4 Express
 import adafruit_dotstar
 led = adafruit_dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1)
 # For Feather M0 Express, Metro M0 Express, Metro M4 Express, and Circuit Playground Express

CircuitPython_Essentials/CircuitPython_Internal_RGB_LED_rainbow.py

@@ -1,7 +1,7 @@
 import time
 import board
 
-# For Trinket M0, Gemma M0, and ItsyBitsy M0 Express
+# For Trinket M0, Gemma M0, ItsyBitsy M0 Express and ItsyBitsy M4 Express
 import adafruit_dotstar
 led = adafruit_dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1)
 # For Feather M0 Express, Metro M0 Express, Metro M4 Express and Circuit Playground Express

CircuitPython_Essentials/CircuitPython_NeoPixel.py

@@ -1,15 +1,12 @@
 # CircuitPython demo - NeoPixel
-
 import time
-
 import board
 import neopixel
 
 pixel_pin = board.A1
 num_pixels = 8
 
-pixels = neopixel.NeoPixel(pixel_pin, num_pixels,
-                           brightness=0.3, auto_write=False)
+pixels = neopixel.NeoPixel(pixel_pin, num_pixels, brightness=0.3, auto_write=False)
 
 
 def wheel(pos):

CircuitPython_Essentials/CircuitPython_NeoPixel_RGBW.py

@@ -1,15 +1,13 @@
 # CircuitPython demo - NeoPixel RGBW
 
 import time
-
 import board
 import neopixel
 
 pixel_pin = board.A1
 num_pixels = 8
 
-pixels = neopixel.NeoPixel(pixel_pin, num_pixels,
-                           brightness=0.3, auto_write=False,
+pixels = neopixel.NeoPixel(pixel_pin, num_pixels, brightness=0.3, auto_write=False,
                            pixel_order=(1, 0, 2, 3))
 
 

CircuitPython_Essentials/CircuitPython_PWM.py

@@ -1,5 +1,4 @@
 import time
-
 import board
 import pulseio
 

CircuitPython_Essentials/CircuitPython_PWM_Piezo.py

@@ -1,15 +1,12 @@
 import time
-
 import board
 import pulseio
 
 # For the M0 boards:
-piezo = pulseio.PWMOut(board.A2, duty_cycle=0,
-                       frequency=440, variable_frequency=True)
-# For Metro M4 Express:
-# piezo = pulseio.PWMOut(
-# board.A1, duty_cycle=0, frequency=440, variable_frequency=True
-# )
+piezo = pulseio.PWMOut(board.A2, duty_cycle=0, frequency=440, variable_frequency=True)
+
+# For the M4 boards:
+# piezo = pulseio.PWMOut(board.A1, duty_cycle=0, frequency=440, variable_frequency=True)
 
 while True:
     for f in (262, 294, 330, 349, 392, 440, 494, 523):

CircuitPython_Essentials/CircuitPython_PWM_Piezo_simpleio.py

@@ -1,5 +1,4 @@
 import time
-
 import board
 import simpleio
 
@@ -7,7 +6,7 @@ while True:
     for f in (262, 294, 330, 349, 392, 440, 494, 523):
         # For the M0 boards:
         simpleio.tone(board.A2, f, 0.25)  # on for 1/4 second
-        # For the Metro M4 Express:
+        # For the M4 boards:
         # simpleio.tone(board.A1, f, 0.25)  # on for 1/4 second
         time.sleep(0.05)  # pause between notes
     time.sleep(0.5)

CircuitPython_Essentials/CircuitPython_Servo.py

@@ -1,11 +1,10 @@
 import time
-
 import board
 import simpleio
 
 # For the M0 boards:
 servo = simpleio.Servo(board.A2)
-# For Metro M4 Express:
+# For the M4 boards:
 # servo = simpleio.Servo(board.A1)
 
 while True:

CircuitPython_Essentials/I2C_Test_Script.py

@@ -1,6 +1,6 @@
 import board
 import busio
-
+from microcontroller import Pin
 
 def is_hardware_I2C(scl, sda):
     try:
@@ -14,16 +14,10 @@ def is_hardware_I2C(scl, sda):
 
 
 def get_unique_pins():
-    pin_names = dir(board)
-    if "NEOPIXEL" in pin_names:
-        pin_names.remove("NEOPIXEL")
-    if "APA102_MOSI" in pin_names:
-        pin_names.remove("APA102_MOSI")
-    if "APA102_SCK" in pin_names:
-        pin_names.remove("APA102_SCK")
-    if "D13" in pin_names:
-        pin_names.remove("D13")
-    pins = [getattr(board, p) for p in pin_names]
+    exclude = ['NEOPIXEL', 'APA102_MOSI', 'APA102_SCK']
+    pins = [pin for pin in [
+        getattr(board, p) for p in dir(board) if p not in exclude]
+        if isinstance(pin, Pin)]
     unique = []
     for p in pins:
         if p not in unique:

CircuitPython_Essentials/PWM_Test_Script.py

@@ -6,8 +6,10 @@ for pin_name in dir(board):
     try:
         p = pulseio.PWMOut(pin)
         p.deinit()
-        print("PWM on:", pin_name)  # Prints the valid, PWM-capable pins!
+        print("PWM on:", pin_name)
     except ValueError:  # This is the error returned when the pin is invalid.
         print("No PWM on:", pin_name)  # Prints the invalid pins.
     except RuntimeError:  # Timer conflict error.
         print("Timers in use:", pin_name)  # Prints the timer conflict pins.
+    except TypeError:  # Error returned when checking a non-pin object in dir(board).
+        pass  # Passes over non-pin objects in dir(board).

CircuitPython_Essentials/UART_Test_Script.py

@@ -1,5 +1,6 @@
 import board
 import busio
+from microcontroller import Pin
 
 
 def is_hardware_uart(tx, rx):
@@ -12,14 +13,10 @@ def is_hardware_uart(tx, rx):
 
 
 def get_unique_pins():
-    pin_names = dir(board)
-    if "NEOPIXEL" in pin_names:
-        pin_names.remove("NEOPIXEL")
-    if "APA102_MOSI" in pin_names:
-        pin_names.remove("APA102_MOSI")
-    if "APA102_SCK" in pin_names:
-        pin_names.remove("APA102_SCK")
-    pins = [getattr(board, p) for p in pin_names]
+    exclude = ['NEOPIXEL', 'APA102_MOSI', 'APA102_SCK']
+    pins = [pin for pin in [
+        getattr(board, p) for p in dir(board) if p not in exclude]
+        if isinstance(pin, Pin)]
     unique = []
     for p in pins:
         if p not in unique: