Arduino concrete adapters

Concrete CW_NfcTransport / CW_CryptoProvider / CW_Logger / CW_Platform implementations for the Arduino UNO R4 (RA4M1). More...

Classes
class	ArduinoCryptoProvider
	CW_CryptoProvider implementation for the Arduino UNO R4 (RA4M1). More...
class	ArduinoLoggerAdapter
	CW_Logger implementation wrapping Arduino's HardwareSerial. More...
class	ArduinoPlatform
	CW_Platform implementation using Arduino's blocking delay(). More...
class	NullLoggerAdapter
	No-op CW_Logger — guarantees nothing reaches the serial port. More...
class	PN532Adapter
	CW_NfcTransport implementation over the Adafruit_PN532 driver. More...

Enumerations
enum class	PN532Interface { PN532Interface::SPI_HARDWARE , PN532Interface::SPI_SOFTWARE , PN532Interface::I2C , PN532Interface::UART }
	Physical wiring used to reach the PN532 reader. More...

Detailed Description

Concrete CW_NfcTransport / CW_CryptoProvider / CW_Logger / CW_Platform implementations for the Arduino UNO R4 (RA4M1).

Each class in this group implements one of the abstract interfaces declared in Adapter interfaces using libraries available through the Arduino Library Manager:

Adapter	Interface	Backing library / hardware
PN532Adapter	CW_NfcTransport	Adafruit_PN532 (SPI / I2C / UART)
ArduinoCryptoProvider	CW_CryptoProvider	AESLib + SHA512/SHA256 + micro-ecc + RA4M1 TRNG
ArduinoLoggerAdapter	CW_Logger	Arduino HardwareSerial (development builds)
NullLoggerAdapter	CW_Logger	No-op (production builds — keeps APDU/key material off the UART)
ArduinoPlatform	CW_Platform	Arduino blocking delay()

Enumeration Type Documentation

PN532Interface

enum class PN532Interface

strong

Physical wiring used to reach the PN532 reader.

Set internally by the constructor matching the wiring the caller used. Exposed for diagnostics — application code does not normally need to read it.

Mode	Pros	Cons
SPI_HARDWARE	Fastest, uses the MCU SPI peripheral.	Pins are fixed by the SPI block.
SPI_SOFTWARE	Any GPIO; useful when SPI is in use.	Slower, more CPU.
I2C	2 wires + IRQ + RESET.	Slower than SPI; needs pull-ups.
UART	2 wires + RESET; long traces tolerated.	Slowest; consumes a HardwareSerial.

Enumerator
SPI_HARDWARE	Hardware SPI via an SPIClass instance.
SPI_SOFTWARE	Bit-banged SPI on four arbitrary GPIOs.
I2C	I2C via a TwoWire instance.
UART	UART via a HardwareSerial instance.

Definition at line 47 of file PN532Adapter.h.