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mikroSDK Library

NFC 2 click

Rating:

5

Author: MIKROE

Last Updated: 2020-12-11

Package Version: 1.0.0.0

mikroSDK Library: 1.0.0.0

Category: RFID/NFC

Downloaded: 3075 times

Not followed.

License: MIT license  

NFC 2 Click is a compact add-on board that contains a highly integrated NFC transceiver for contactless communication.

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  • mikroSDK Library 2.0.0.0
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mikroSDK Library Blog

NFC 2 click

NFC 2 click

Native view of the NFC 2 click board.

View full image
NFC 2 click

NFC 2 click

Front and back view of the NFC 2 click board.

View full image

Library Description

The library covers all the necessary functions to control NFC 2 Click board. A library performs the communication with the device via I2C interface.

Key functions:

  • void nfc2_generic_write ( uint8_t *p_tx_data, uint8_t n_bytes ) - Generic write function.
  • void nfc2_generic_read ( uint8_t *p_rx_h_data, uint8_t *p_rx_p_data ) - Generic read function.
  • void nfc2_cmd_core_reset ( void ) - Core reset command function.

Examples description

The application is composed of three sections :

  • System Initialization - Initializes I2C and start to write log.
  • Application Initialization - Initialization driver enables - I2C, hw reset, reseteting and initialize core, disabling standby mode, starting test procedure, set configuration and start discovery, also write log.
  • Application Task - (code snippet) This is an example which demonstrates the usage of NFC 2 Click board. NFC 2 Click board can be used for detection of RFiD tag and displays it's value via USART terminal. All data logs write on USB uart changes for every 1 sec.
void application_task ( )
{
    while ( nfc2_check_irq( ) == NFC2_IQR_STATE_HIGH )
    {
        nfc2_read_ctrl_packet_data( &ctrl_pck_data );
        Delay_ms( 100 );

        nfc2_activate_rmt_mifare_card( );
        Delay_ms( 100 );
        
        nfc2_read_ctrl_packet_data( &ctrl_pck_data );
        Delay_ms( 10 );

        while ( nfc2_check_irq( ) == NFC2_IQR_STATE_LOW );
        
        nfc2_read_ctrl_packet_data( &ctrl_pck_data );

        nfc2_cmd_authenticate_sector( 0x30 );
        Delay_ms( 100 );

        nfc2_read_ctrl_packet_data( &ctrl_pck_data );
        Delay_ms( 10 );

        while ( nfc2_check_irq( ) == NFC2_IQR_STATE_LOW );

        nfc2_read_ctrl_packet_data( &ctrl_pck_data );
        display_nfc_data( );
        
        mikrobus_logWrite( "    Disconnect Card    ", _LOG_LINE );
        nfc2_cmd_card_disconnected( );
        Delay_ms( 10 );
        
        nfc2_read_ctrl_packet_data( &ctrl_pck_data );
        Delay_ms( 10 );

        while ( nfc2_check_irq( ) == NFC2_IQR_STATE_LOW );
        
        nfc2_read_ctrl_packet_data( &ctrl_pck_data );
        Delay_ms( 100 );
    }
    
    while ( nfc2_check_irq( ) == NFC2_IQR_STATE_LOW );

    mikrobus_logWrite( "-----------------------", _LOG_LINE );
    Delay_ms( 1000 );

}


Additional Functions :

  • void display_packet ( ) - Display packet log data.
  • void display_nfc_data ( ) - Display packet log data.
  • void nfc2_test_antenna ( ) - Testing Antenna function.
  • void nfc2_reset_and_init_core ( ) - Reset and init core function.

Other mikroE Libraries used in the example:

  • I2C
  • UART
  • Conversions

Additional notes and informations

Depending on the development board you are using, you may need USB UART clickUSB UART 2 click or RS232 click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.

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