NFC 7 I2C Click
NFC 7 Click (I2C) is an add-on board that integrates NFC functionality in various applications. This board features the PN7160, a Near Field Communication (NFC) controller from NXP that is compliant with NFC Forum and NCI 2.0 standards. The board features an I2C communication interface, low-power consumption modes, and a new-generation RF contactless front-end design with high sensitivity and dynamic load modulation for reliable communication. It supports multiple NFC standards, including ISO/IEC 14443, ISO/IEC 15693, MIFARE, and FeliCa, and offers standalone card emulation functionality.
Click Product page
Click library
- Author : Stefan Filipovic
- Date : Oct 2024.
- Type : I2C type
Software Support
We provide a library for the NFC 7 I2C 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 7 I2C Click driver.
Standard key functions :
nfc7i2c_cfg_setup
Config Object Initialization function.
void nfc7i2c_cfg_setup(nfc7i2c_cfg_t *cfg)
NFC 7 I2C configuration object setup function.
NFC 7 I2C Click configuration object.
Definition nfc7i2c.h:489
nfc7i2c_init
Initialization function.
err_t nfc7i2c_init(nfc7i2c_t *ctx, nfc7i2c_cfg_t *cfg)
NFC 7 I2C initialization function.
NFC 7 I2C Click context object.
Definition nfc7i2c.h:460
nfc7i2c_default_cfg
Click Default Configuration function.
err_t nfc7i2c_default_cfg(nfc7i2c_t *ctx)
NFC 7 I2C default configuration function.
Example key functions :
nfc7i2c_wait_discovery
This function waits until remote NFC device is discovered.
err_t nfc7i2c_wait_discovery(nfc7i2c_t *ctx, nfc7i2c_rf_intf_t *rf_intf)
NFC 7 I2C wait discovery function.
NFC 7 I2C Click discovered remote device properties object.
Definition nfc7i2c.h:420
nfc7i2c_presence_check
This function waits until the discovered target device is removed.
void nfc7i2c_presence_check(nfc7i2c_t *ctx, nfc7i2c_rf_intf_t *rf_intf)
NFC 7 I2C presence check function.
nfc7i2c_stop_discovery
This function stops the RF discovery process.
err_t nfc7i2c_stop_discovery(nfc7i2c_t *ctx)
NFC 7 I2C stop discovery function.
Example Description
This example demonstrates the use of NFC 7 I2C Click board by handling the detection and processing of various NFC technologies and protocols, and ensuring the application can respond to different NFC card types (A,B,F,V).
The demo application is composed of two sections :
Application Init
Initializes the driver and logger, performs the Click default configuration and reads the device firmware version.
{
log_cfg_t log_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
if ( I2C_MASTER_ERROR ==
nfc7i2c_init( &nfc7i2c, &nfc7i2c_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
log_printf( &logger, " FW version: %.2X.%.2X.%.2X\r\n",
( uint16_t ) nfc7i2c.fw_version[ 0 ],
( uint16_t ) nfc7i2c.fw_version[ 1 ],
( uint16_t ) nfc7i2c.fw_version[ 2 ] );
log_info( &logger, " Application Task " );
}
#define NFC7I2C_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition nfc7i2c.h:340
void application_init(void)
Definition main.c:86
@ NFC7I2C_ERROR
Definition nfc7i2c.h:508
Application Task
Waits for an NFC device to be discovered, checks if it supports a known NFC technology, and then handles the device based on its protocol. The application continues processing the device (reading and writing information) and waits until the card is removed. Once the card is removed, the discovery process is restarted to detect a new NFC device.
{
log_printf( &logger, " WAITING FOR DEVICE DISCOVERY\r\n\n" );
{
{
for ( ; ; )
{
nfc7i2c_display_card_info ( rf_intf );
{
{
nfc7i2c_handle_iso14443_3a ( &nfc7i2c );
break;
}
{
nfc7i2c_handle_iso14443_4 ( &nfc7i2c );
break;
}
{
nfc7i2c_handle_iso15693 ( &nfc7i2c );
break;
}
{
nfc7i2c_handle_mifare ( &nfc7i2c );
break;
}
default:
{
break;
}
}
{
break;
}
}
log_printf ( &logger, " - CARD REMOVED\r\n\n" );
}
else
{
log_printf ( &logger, " - WRONG DISCOVERY\r\n\n" );
}
}
}
#define NFC7I2C_NCI_RF_TECH_PASSIVE_POLL_15693
Definition nfc7i2c.h:182
#define NFC7I2C_NCI_RF_PROT_T5T
Definition nfc7i2c.h:195
#define NFC7I2C_NCI_RF_PROT_ISODEP
Definition nfc7i2c.h:193
#define NFC7I2C_NCI_RF_PROT_MIFARE
Definition nfc7i2c.h:196
#define NFC7I2C_NCI_RF_PROT_T2T
Definition nfc7i2c.h:191
#define NFC7I2C_NCI_RF_TECH_PASSIVE_POLL_NFC_A
NFC 7 I2C RF technologies and mode setting.
Definition nfc7i2c.h:179
#define NFC7I2C_NCI_RF_TECH_PASSIVE_POLL_NFC_B
Definition nfc7i2c.h:180
#define NFC7I2C_NCI_RF_TECH_PASSIVE_POLL_NFC_F
Definition nfc7i2c.h:181
err_t nfc7i2c_start_discovery(nfc7i2c_t *ctx)
NFC 7 I2C start discovery function.
err_t nfc7i2c_reader_act_next(nfc7i2c_t *ctx, nfc7i2c_rf_intf_t *rf_intf)
NFC 7 I2C reader activate next function.
void application_task(void)
Definition main.c:126
@ NFC7I2C_OK
Definition nfc7i2c.h:507
uint8_t more_tags
Definition nfc7i2c.h:424
uint8_t protocol
Definition nfc7i2c.h:422
uint8_t mode_tech
Definition nfc7i2c.h:423
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.NFC7I2C
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.