Simplified example I2C setup

micropython/examples/breakout_encoder_wheel/buttons.py

@@ -1,4 +1,5 @@
 from pimoroni_i2c import PimoroniI2C
+from pimoroni import BREAKOUT_GARDEN_I2C_PINS  # or PICO_EXPLORER_I2C_PINS or HEADER_I2C_PINS
 from breakout_encoder_wheel import BreakoutEncoderWheel, UP, DOWN, LEFT, RIGHT, CENTRE, NUM_BUTTONS, NUM_LEDS
 
 """
@@ -7,14 +8,11 @@ A demonstration of reading the 5 buttons on Encoder Wheel.
 Press Ctrl+C to stop the program.
 """
 
-PINS_BREAKOUT_GARDEN = {"sda": 4, "scl": 5}
-PINS_PICO_EXPLORER = {"sda": 20, "scl": 21}
-
 # Constants
 BUTTON_NAMES = ["Up", "Down", "Left", "Right", "Centre"]
 
 # Create a new BreakoutEncoderWheel
-i2c = PimoroniI2C(**PINS_BREAKOUT_GARDEN)
+i2c = PimoroniI2C(**BREAKOUT_GARDEN_I2C_PINS)
 wheel = BreakoutEncoderWheel(i2c)
 
 # Variables

micropython/examples/breakout_encoder_wheel/chase_game.py

@@ -1,5 +1,6 @@
 import random
 from pimoroni_i2c import PimoroniI2C
+from pimoroni import BREAKOUT_GARDEN_I2C_PINS  # or PICO_EXPLORER_I2C_PINS or HEADER_I2C_PINS
 from breakout_encoder_wheel import BreakoutEncoderWheel, NUM_LEDS
 
 """
@@ -10,10 +11,7 @@ When you reach the goal, the goal will move to a new random position.
 Press Ctrl+C to stop the program.
 """
 
-PINS_BREAKOUT_GARDEN = {"sda": 4, "scl": 5}
-PINS_PICO_EXPLORER = {"sda": 20, "scl": 21}
-
-i2c = PimoroniI2C(**PINS_BREAKOUT_GARDEN)
+i2c = PimoroniI2C(**BREAKOUT_GARDEN_I2C_PINS)
 wheel = BreakoutEncoderWheel(i2c)
 
 # The band colour hues to show in Angle mode

micropython/examples/breakout_encoder_wheel/clock.py

@@ -1,7 +1,7 @@
 import time
 from machine import RTC
-
 from pimoroni_i2c import PimoroniI2C
+from pimoroni import BREAKOUT_GARDEN_I2C_PINS  # or PICO_EXPLORER_I2C_PINS or HEADER_I2C_PINS
 from breakout_encoder_wheel import BreakoutEncoderWheel, NUM_LEDS
 
 """
@@ -10,9 +10,6 @@ Displays a 12 hour clock on Encoder Wheel's LED ring, getting time from the syst
 Press Ctrl+C to stop the program.
 """
 
-PINS_BREAKOUT_GARDEN = {"sda": 4, "scl": 5}
-PINS_PICO_EXPLORER = {"sda": 20, "scl": 21}
-
 # Datetime Indices
 HOUR = 4
 MINUTE = 5
@@ -30,8 +27,10 @@ MILLIS_PER_HOUR = MILLIS_PER_MINUTE * 60
 MILLIS_PER_HALF_DAY = MILLIS_PER_HOUR * 12
 
 # Create a new BreakoutEncoderWheel
-i2c = PimoroniI2C(**PINS_BREAKOUT_GARDEN)
+i2c = PimoroniI2C(**BREAKOUT_GARDEN_I2C_PINS)
 wheel = BreakoutEncoderWheel(i2c)
+
+# Access the built-in RTC
 rtc = RTC()
 
 

micropython/examples/breakout_encoder_wheel/colour_picker.py

@@ -1,6 +1,6 @@
 import time
-
 from pimoroni_i2c import PimoroniI2C
+from pimoroni import BREAKOUT_GARDEN_I2C_PINS  # or PICO_EXPLORER_I2C_PINS or HEADER_I2C_PINS
 from breakout_encoder_wheel import BreakoutEncoderWheel, UP, DOWN, LEFT, RIGHT, CENTRE, NUM_LEDS
 
 """
@@ -16,9 +16,6 @@ Press the centre to hide the selection marker
 Press Ctrl+C to stop the program.
 """
 
-PINS_BREAKOUT_GARDEN = {"sda": 4, "scl": 5}
-PINS_PICO_EXPLORER = {"sda": 20, "scl": 21}
-
 # Constants
 BRIGHTNESS_STEP = 0.02      # How much to increase or decrease the brightness each update
 SATURATION_STEP = 0.02      # How much to increase or decrease the saturation each update
@@ -26,7 +23,7 @@ UPDATES = 50                # How many times to update the LEDs per second
 UPDATE_RATE_US = 1000000 // UPDATES
 
 # Create a new BreakoutEncoderWheel
-i2c = PimoroniI2C(**PINS_BREAKOUT_GARDEN)
+i2c = PimoroniI2C(**BREAKOUT_GARDEN_I2C_PINS)
 wheel = BreakoutEncoderWheel(i2c)
 
 # Variables

micropython/examples/breakout_encoder_wheel/encoder.py

@@ -1,4 +1,5 @@
 from pimoroni_i2c import PimoroniI2C
+from pimoroni import BREAKOUT_GARDEN_I2C_PINS  # or PICO_EXPLORER_I2C_PINS or HEADER_I2C_PINS
 from breakout_encoder_wheel import BreakoutEncoderWheel
 
 """
@@ -11,7 +12,7 @@ PINS_BREAKOUT_GARDEN = {"sda": 4, "scl": 5}
 PINS_PICO_EXPLORER = {"sda": 20, "scl": 21}
 
 # Create a new BreakoutEncoderWheel
-i2c = PimoroniI2C(**PINS_BREAKOUT_GARDEN)
+i2c = PimoroniI2C(**BREAKOUT_GARDEN_I2C_PINS)
 wheel = BreakoutEncoderWheel(i2c)
 
 # Variables

micropython/examples/breakout_encoder_wheel/gpio_pwm.py

@@ -1,9 +1,9 @@
 import math
 import time
-
-from breakout_ioexpander import BreakoutIOExpander
 from pimoroni_i2c import PimoroniI2C
+from pimoroni import BREAKOUT_GARDEN_I2C_PINS  # or PICO_EXPLORER_I2C_PINS or HEADER_I2C_PINS
 from breakout_encoder_wheel import BreakoutEncoderWheel, CENTRE, GPIOS, NUM_GPIOS
+from breakout_ioexpander import PWM
 
 """
 Output a sine wave PWM sequence on the Encoder Wheel's side GPIO pins.
@@ -11,16 +11,14 @@ Output a sine wave PWM sequence on the Encoder Wheel's side GPIO pins.
 Press the centre button or Ctrl+C to stop the program.
 """
 
-PINS_BREAKOUT_GARDEN = {"sda": 4, "scl": 5}
-PINS_PICO_EXPLORER = {"sda": 20, "scl": 21}
-
+# Constants
 SPEED = 5             # The speed that the PWM will cycle at
 UPDATES = 50          # How many times to update LEDs and Servos per second
 UPDATE_RATE_US = 1000000 // UPDATES
 FREQUENCY = 1000      # The frequency to run the PWM at
 
 # Create a new BreakoutEncoderWheel
-i2c = PimoroniI2C(**PINS_BREAKOUT_GARDEN)
+i2c = PimoroniI2C(**BREAKOUT_GARDEN_I2C_PINS)
 wheel = BreakoutEncoderWheel(i2c)
 
 # Set the PWM frequency for the GPIOs
@@ -28,8 +26,9 @@ period = wheel.gpio_pwm_frequency(FREQUENCY)
 
 # Set the GPIO pins to PWM outputs
 for g in GPIOS:
-    wheel.gpio_pin_mode(g, BreakoutIOExpander.PIN_PWM)
+    wheel.gpio_pin_mode(g, PWM)
 
+# Variables
 offset = 0.0
 
 

micropython/examples/breakout_encoder_wheel/led_rainbow.py

@@ -1,6 +1,6 @@
 import time
-
 from pimoroni_i2c import PimoroniI2C
+from pimoroni import BREAKOUT_GARDEN_I2C_PINS  # or PICO_EXPLORER_I2C_PINS or HEADER_I2C_PINS
 from breakout_encoder_wheel import BreakoutEncoderWheel, NUM_LEDS
 
 """
@@ -9,9 +9,6 @@ Displays a rotating rainbow pattern on Encoder Wheel's LED ring.
 Press Ctrl+C to stop the program.
 """
 
-PINS_BREAKOUT_GARDEN = {"sda": 4, "scl": 5}
-PINS_PICO_EXPLORER = {"sda": 20, "scl": 21}
-
 # Constants
 SPEED = 5           # The speed that the LEDs will cycle at
 BRIGHTNESS = 1.0    # The brightness of the LEDs
@@ -19,7 +16,7 @@ UPDATES = 50        # How many times the LEDs will be updated per second
 UPDATE_RATE_US = 1000000 // UPDATES
 
 # Create a new BreakoutEncoderWheel
-i2c = PimoroniI2C(**PINS_BREAKOUT_GARDEN)
+i2c = PimoroniI2C(**BREAKOUT_GARDEN_I2C_PINS)
 wheel = BreakoutEncoderWheel(i2c)
 
 # Variables

micropython/examples/breakout_encoder_wheel/stop_watch.py

@@ -1,7 +1,7 @@
 import math
 import time
-
 from pimoroni_i2c import PimoroniI2C
+from pimoroni import BREAKOUT_GARDEN_I2C_PINS  # or PICO_EXPLORER_I2C_PINS or HEADER_I2C_PINS
 from breakout_encoder_wheel import BreakoutEncoderWheel, CENTRE, NUM_LEDS
 
 """
@@ -12,9 +12,6 @@ Press the centre button to start the stopwatch, then again to pause and resume.
 Press Ctrl+C to stop the program.
 """
 
-PINS_BREAKOUT_GARDEN = {"sda": 4, "scl": 5}
-PINS_PICO_EXPLORER = {"sda": 20, "scl": 21}
-
 # Constants
 BRIGHTNESS = 1.0                    # The brightness of the LEDs when the stopwatch is running
 UPDATES = 50                        # How many times the LEDs will be updated per second
@@ -29,7 +26,8 @@ UPDATES_PER_PULSE = IDLE_PULSE_TIME * UPDATES
 
 IDLE, COUNTING, PAUSED = range(3)   # The state constants used for program flow
 
-i2c = PimoroniI2C(**PINS_BREAKOUT_GARDEN)
+# Create a new BreakoutEncoderWheel
+i2c = PimoroniI2C(**BREAKOUT_GARDEN_I2C_PINS)
 wheel = BreakoutEncoderWheel(i2c)
 
 # Variables