nfc6  2.1.0.0
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NFC 6 click

NFC 6 Click is a compact add-on board that contains an NFC transceiver for contactless communication. This board features the ST25R95, a near-field communication transceiver from STMicroelectronics. It supports reader and writer operating modes and emulates ISO/IEC 14443-3 Type A cards. The RF communications are done over the 13.56MHz. The transceiver features tag detection mode, field detection mode, transmission and reception modes, and more.

click Product page


Click library

  • Author : Stefan Filipovic
  • Date : Sep 2023.
  • Type : SPI type

Software Support

We provide a library for the NFC 6 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for NFC 6 Click driver.

Standard key functions :

Example key functions :

  • nfc6_send_command This function sends a desired command by using SPI serial interface.
    err_t nfc6_send_command ( nfc6_t *ctx, uint8_t cmd, uint8_t *data_in, uint8_t len );
  • nfc6_read_data This function reads a response data bytes by using SPI serial interface.
    err_t nfc6_read_data ( nfc6_t *ctx, uint8_t *data_out, uint16_t buffer_size, uint16_t *rx_len );
  • nfc6_read_mifare_tag_uid This function reads the UID of a MIFARE ISO14443-A type tags with 4-byte or 7-byte UIDs.
    err_t nfc6_read_mifare_tag_uid ( nfc6_t *ctx, uint8_t *tag_uid, uint8_t *tag_uid_len );

Example Description

This example demonstrates the use of NFC 6 Click board by reading MIFARE ISO/IEC 14443 type A tag UID.

The demo application is composed of two sections :

Application Init

Initializes the driver and logger, performs the click default configuration and reads the device ID.

void application_init ( void )
{
log_cfg_t log_cfg;
nfc6_cfg_t nfc6_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
nfc6_cfg_setup( &nfc6_cfg );
NFC6_MAP_MIKROBUS( nfc6_cfg, MIKROBUS_1 );
if ( SPI_MASTER_ERROR == nfc6_init( &nfc6, &nfc6_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
if ( NFC6_ERROR == nfc6_default_cfg ( &nfc6 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
uint8_t device_id[ 13 ] = { 0 };
nfc6_send_command ( &nfc6, NFC6_CMD_IDN, NULL, NULL );
if ( NFC6_OK == nfc6_read_data ( &nfc6, device_id, sizeof ( device_id ), NULL ) )
{
log_printf ( &logger, " Device ID: %s\r\n", device_id );
}
log_info( &logger, " Application Task " );
}

Application Task

If there's a tag detected, it reads its UID and displays it on the USB UART every 500ms.

void application_task ( void )
{
uint8_t tag_uid[ NFC6_TAG_UID_MAX_LEN ] = { 0 };
uint8_t tag_uid_len = 0;
if ( NFC6_OK == nfc6_read_mifare_tag_uid ( &nfc6, tag_uid, &tag_uid_len ) )
{
log_printf( &logger, " TAG UID: " );
for ( uint8_t cnt = 0; cnt < tag_uid_len; cnt++ )
{
log_printf( &logger, "0x%.2X ", ( uint16_t ) tag_uid[ cnt ] );
}
log_printf( &logger, "\r\n----------------------------------\r\n" );
Delay_ms ( 500 );
}
}

Note

Only ISO14443-A type tags with 4-byte or 7-byte UIDs are compatible with this example.

We recommend MIKROE-1475 - an RFiD tag 13.56MHz compliant with ISO14443-A standard.

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.NFC6

Additional notes and informations

Depending on the development board you are using, you may need USB UART click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MikroElektronika compilers.


NFC6_OK
@ NFC6_OK
Definition: nfc6.h:263
nfc6_cfg_t
NFC 6 Click configuration object.
Definition: nfc6.h:239
application_task
void application_task(void)
Definition: main.c:76
nfc6_send_command
err_t nfc6_send_command(nfc6_t *ctx, uint8_t cmd, uint8_t *data_in, uint8_t len)
NFC 6 send command function.
nfc6_read_mifare_tag_uid
err_t nfc6_read_mifare_tag_uid(nfc6_t *ctx, uint8_t *tag_uid, uint8_t *tag_uid_len)
NFC 6 read MIFARE tag UID function.
nfc6_t
NFC 6 Click context object.
Definition: nfc6.h:218
nfc6_read_data
err_t nfc6_read_data(nfc6_t *ctx, uint8_t *data_out, uint16_t buffer_size, uint16_t *rx_len)
NFC 6 read data function.
NFC6_CMD_IDN
#define NFC6_CMD_IDN
NFC 6 command bytes.
Definition: nfc6.h:84
NFC6_ERROR
@ NFC6_ERROR
Definition: nfc6.h:264
nfc6_init
err_t nfc6_init(nfc6_t *ctx, nfc6_cfg_t *cfg)
NFC 6 initialization function.
NFC6_TAG_UID_MAX_LEN
#define NFC6_TAG_UID_MAX_LEN
Definition: nfc6.h:162
application_init
void application_init(void)
Definition: main.c:33
NFC6_MAP_MIKROBUS
#define NFC6_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: nfc6.h:202
nfc6_default_cfg
err_t nfc6_default_cfg(nfc6_t *ctx)
NFC 6 default configuration function.
nfc6_cfg_setup
void nfc6_cfg_setup(nfc6_cfg_t *cfg)
NFC 6 configuration object setup function.