MakerBit RFID

MakeCode extension for the PN532 NFC RFID module.

MakerBit Board

The MakerBit connects to the BBC micro:bit to provide easy connections to a wide variety of sensors, actuators and other components.

http://makerbit.com/

MakerBit	MakerBit+R with motor controller

RFID

This extension supports reading and writing data from RFID cards and tags using a PN532 NFC board.

Example

makerbit.onRFIDPresented(function () {
  basic.showString(makerbit.convertNumberToHex(makerbit.rfidGetUID(), HexDigits.d0))
  makerbit.rfidWriteString("Hello!")
  basic.showString(makerbit.rfidReadString())
})

MakerBit onRFIDPresented

Create an event handler for an RFID tag. If an RFID tag is detected then the code within the event handler is executed. During execution, a busy flag is used to prevent simultaneous calls to the handler. The busy flag is cleared when the event handler is exited.

makerbit.onRFIDPresented(() => {
})

MakerBit rfidGetUID

Retrieves the UID of an RFID tag. Returned as a hex string, or empty string if no tag is present.

makerbit.rfidGetUID()

MakerBit rfidWriteString

Initializes the RFID tag in the MIFARE Classic format and writes the string data to the card as a MIFARE "well-known-type" text record. The maximum string length is 36 characters.

makerbit.rfidWriteString("Hello")

MakerBit rfidReadString

Reads the string data stored within the card. The data is assumed to be stored as a MIFARE "well-known-type" record of type text or URI.

makerbit.rfidReadString()

MakerBit rfidWriteURL

Initializes the RFID tag in the MIFARE Classic format and writes the data to the card as a MIFARE "well-known-type" URI record. The maximum length is 38 characters. Do not include the http:// prefix.

makerbit.rfidWriteURL("1010technologies.com")

MakerBit convertNumberToHex

Convert an integer number to a hexadecimal string, with an optional number of digits. Negative numbers are treated as 32-bit integers. Set the number of digits to 0 for the default (default is the smallest even number of digits needed to convert the number).

makerbit.convertNumberToHex(12345, 0)

License

Licensed under the MIT License (MIT). See LICENSE file for more details.

Supported targets

• for PXT/microbit
• for PXT/calliope