adafruit-circuitpython-busdevice

import board import busio import digitalio from adafruit_bus_device.i2c_device import I2CDevice from adafruit_bus_device.spi_device import SPIDevice # --- I2C Example --- # Replace with your actual I2C device address (e.g., 0x68 for DS3231) I2C_DEVICE_ADDRESS = 0x68 I2C_REGISTER_ADDRESS = 0x0E # Example register print("--- I2C Device Example ---") try: # Initialize I2C bus i2c = busio.I2C(board.SCL, board.SDA) # Create an I2CDevice object i2c_device = I2CDevice(i2c, I2C_DEVICE_ADDRESS) # Perform an I2C transaction with i2c_device: i2c_device.write(bytes([I2C_REGISTER_ADDRESS])) result = bytearray(1) i2c_device.readinto(result) print(f"I2C read from 0x{I2C_DEVICE_ADDRESS:02X}, register 0x{I2C_REGISTER_ADDRESS:02X}: {result[0]:02X}") except Exception as e: print(f"I2C Example Error: {e}") finally: if 'i2c' in locals() and i2c.locked: i2c.unlock() # Ensure bus is unlocked # --- SPI Example --- # Replace with your actual SPI settings and CS pin SPI_REGISTER_ADDRESS = 0xD0 # Example register for BMP280 print("\n--- SPI Device Example ---") try: # Initialize SPI bus and Chip Select pin spi_bus = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO) cs_pin = digitalio.DigitalInOut(board.D5) # Use an appropriate digital pin # Create an SPIDevice object spi_device = SPIDevice(spi_bus, cs_pin) # Perform an SPI transaction with spi_device as spi: spi.write(bytes([SPI_REGISTER_ADDRESS])) result = bytearray(1) spi.readinto(result) print(f"SPI read from register 0x{SPI_REGISTER_ADDRESS:02X}: {result[0]:02X}") except Exception as e: print(f"SPI Example Error: {e}") finally: if 'spi_bus' in locals() and spi_bus.locked: spi_bus.unlock() # Ensure bus is unlocked print("Examples complete.")