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Showing content from https://github.com/stm32duino/Arduino_Core_STM32/wiki/M24SR64-Y below:

M24SR64 Y · stm32duino/Arduino_Core_STM32 Wiki · GitHub

Arduino library to support the dynamic NFC/RFID Tag IC dual interface M24SR64-Y.

• M24SR(const uint8_t, TwoWire *, gpoEventCallback, const int, const int): class constructor
  Params I2C address of the component
  Params pointer to the I2C instance
  Params pointer to a gpoEventCallback called when the gpo pin status changes
  Params gpo pin number
  Params RF disable pin number

• begin(void *): initializes the device
  Params not used
  Returns M24SR_SUCCESS if no errors

• writeTxt(const char *): write text TAG
  Params pointer to the text to write
  Returns true if no errors

• readTxt(char *): read text TAG
  Params pointer to the text to read

• writeUri(const char *): write URI TAG
  Params pointer to the URI to write
  Returns true if no errors

• readUri(char *): read URI TAG
  Params pointer to the URI to read

• writeAAR(const *): write AAR TAG
  Params pointer to the AAR to write
  Returns true if no errors

• readAAR(char *): read AAR TAG
  Params pointer to the AAR to read

• writeURIMail(const char *, const char *, const char *): write URI Mail TAG
  Params pointer to recipient
  Params pointer to the mail subject
  Params pointer to the mail body
  Returns true if no errors

• readURIMail(char *, char *, char *): read URI Mail TAG
  Params pointer to recipient
  Params pointer to the mail subject
  Params pointer to the mail body
  Params pointer to the URIMail to read

• writeSMS(const char *, const char *): write SMS TAG
  Params pointer to recipient
  Params pointer to the SMS body
  Returns true if no errors

• readSMS(char *, char *): read SMS TAG
  Params pointer to recipient
  Params pointer to the SMS body
  Params pointer to the SMS to read

• writeMime(const char *, const char *, const uint8_t): write mime TAG
  Params pointer to mime type
  Params pointer to data
  Params data length
  Returns true if no errors

• readMime(char *, uint8_t *, uint8_t *): read mime TAG
  Params pointer to mime type
  Params pointer to data
  Params pointer to data length

For the other functions the documentation is available on www.st.com.

The size of a TAG is limited to 246 bytes. This limitation is due to the Iblock command on the M24SR device (protocol + payload = 255 bytes).

• WriteAAR: writes a AAR (Android Application Record) tag on the device. It opens an application on your smartphone.
• WriteMime: writes a mime tag on the device. It records a define type of data.
• WriteSMS: writes a SMS tag on the device. It records a SMS body and a recipient phone number
• WriteText: writes a text tag on the device. It records a simple text message.
• WriteURI: writes a URI tag on the device. It records an URI.
• WriteURIMail: writes a Mail tag on the device. It records a mail with the recipient, the subject and the body of the message.

You can find the source files at
https://github.com/stm32duino/M24SR64-Y

The M24SR64-Y datasheet is available at
http://www.st.com/en/nfc/m24sr64-y.html

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