st25dvxx-spin

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This is a P8X32A/Propeller, P2X8C4M64P/Propeller 2 driver object for the ST25DVxx-series dynamic NFC/RFID tag ICs with integrated EEPROM.

IMPORTANT: This software is meant to be used with the spin-standard-library (P8X32A) or p2-spin-standard-library (P2X8C4M64P). Please install the applicable library first before attempting to use this code, otherwise you will be missing several files required to build the project.

Salient Features

• I2C connection at ~25kHz (P1: bytecode-based I2C engine), 1MHz (P1: PASM-based I2C engine, P2)
• Read/write to the embedded EEPROM over I2C (uses memory.md API
• Present, change security session password (I2C)
• Read serial number
• Read RF individual area R/W and password policies
• Read lock flags
• Enable/disable energy-harvesting feature

Requirements

P1/SPIN1:

• spin-standard-library
• memory.common.spinh (provided by the spin-standard-library)

P2/SPIN2:

• p2-spin-standard-library (not yet implemented)

Compiler Compatibility

Processor	Language	Compiler	Backend	Status
P1	SPIN1	FlexSpin (6.9.4)	Bytecode	OK
P1	SPIN1	FlexSpin (6.9.4)	Native/PASM	OK
P2	SPIN2	FlexSpin (6.9.4)	NuCode	Not yet implemented
P2	SPIN2	FlexSpin (6.9.4)	Native/PASM2	Not yet implemented

Limitations

• Very early in development - may malfunction, or outright fail to build
• Most I2C-changeable settings not implemented yet (read-only)
• No handling of capabilities container (CC) file
• TBD