UNIQUE ID Click

Unique ID Click carries DS2401, an enhanced silicon serial number IC. It’s a low cost solution for providing a unique registration number to your design. The chip consists of a factory-lasered 64-bit ROM that includes a uniques a 48-bit serial number, an 8-bit CRC, and an 8-bit family code. It uses 1-wire communications for interfacing with the target board microcontroller, either through a GP1 or GP0 pin (here in place of the default AN and PWM mikroBUS pins). The board is designed to use either a 3.3V or 5V power supply.

Click Product page

Click library

• Author : Aleksandra Cvjeticanin
• Date : Feb 2022.
• Type : One Wire type

Software Support

We provide a library for the UNIQUE ID 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 UNIQUE ID Click driver.

Standard key functions :

• uniqueid_cfg_setup Config Object Initialization function.

  void uniqueid_cfg_setup ( uniqueid_cfg_t *cfg );

• uniqueid_init Initialization function.

  err_t uniqueid_init ( uniqueid_t *ctx, uniqueid_cfg_t *cfg );

Example key functions :

• uniqueid_read_id This function reads Family Code and Serial Number of device's ROM memory.

  err_t uniqueid_read_id ( uniqueid_t *ctx, uint8_t *family, uint8_t *serial_num ); 

Example Description

This example demonstrates the use of UNIQUE ID Click board by reading and displaying Family Code and Serial Number on the UART Terminal.

The demo application is composed of two sections :

Application Init

Initionalizes both logger config object and Click config object.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    uniqueid_cfg_t uniqueid_cfg;  /**< Click config object. */

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );

    // Click initialization
    uniqueid_cfg_setup( &uniqueid_cfg );
    UNIQUEID_MAP_MIKROBUS( uniqueid_cfg, MIKROBUS_1 );
    if ( ONE_WIRE_ERROR == uniqueid_init( &uniqueid, &uniqueid_cfg ) ) 
    {
        log_error( &logger, " Initialization error." );
        for ( ; ; );
    }

    log_info( &logger, " Application Task " );
}

Application Task

Demonstrates the usage of uniqueid_read_id function, which stores the Family Code and Serial Number of the Click in family_code and serial_num variables. Both values will be displayed on the UART Terminal.

void application_task ( void )
{
    uint8_t family_code;
    uint8_t serial_num[ 6 ];

    if ( UNIQUEID_OK == uniqueid_read_id( &uniqueid, &family_code, &serial_num[ 0 ] ) )
    {
        log_printf( &logger, "Family Code = 0x%.2X\r\n", ( uint16_t ) family_code ); 
        log_printf( &logger, "Serial Number = 0x%.2X%.2X%.2X%.2X%.2X%.2X\r\n", 
                    ( uint16_t ) serial_num[ 0 ], ( uint16_t ) serial_num[ 1 ], 
                    ( uint16_t ) serial_num[ 2 ], ( uint16_t ) serial_num[ 3 ], 
                    ( uint16_t ) serial_num[ 4 ], ( uint16_t ) serial_num[ 5 ] ); 
    }      

    Delay_ms ( 1000 ); 
}

Note

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.UNIQUEID

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.