A simple library to interface with RDM6300 RFID reader.

Features

• Fast and single tag reading, even if it held near the antenna for a while.
• Using a single given GPIO pin or a Stream.
• Can tell if the tag is still near the antenna.
• Both hardware and software uart (serial) support on esp8266.
• SAMD hardware uart (serial) support.
• Both SoftwareSerial and AltSoftSerial support.

Getting Started

Hardware

• RDM6300 module with matching antenna.
• 125KHz RFID tags.
• Microcontroller (arduino, esp8266, esp32…).

Software

A simple RFID tag reader with textual serial output: examples/read_to_serial/read_to_serial.ino

API

• void begin(Stream *stream) – Initialize instance to read from a given stream.
• void begin(int rx_pin, uint8_t uart_nr=1) – Initialize instance to read from a given pin.
• void set_tag_timeout(uint32_t tag_timeout_ms) – sets the tag “valid” timeout, (300ms default)
  RDM6300 sends packet every 65ms when tag is near- better higher values for debouncing.
• uint32_t get_tag_id() – Returns the tag_id as long as it is near, 0 otherwise.
• uint32_t get_new_tag_id() – Returns the tag_id of a “new” near tag,
  following calls will return 0 as long as the same tag is kept near.
• bool update() – Updates the internal values must be called repeatedly! deprecated!
• bool is_tag_near() – Returns whether a tag is held near. deprecated! use get_tag_id().