rng

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RNG Click

RNG Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.

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Click Library

• Author : MikroE Team
• Date : jun 2020.
• Type : I2C type

Software Support

Example Description

This Click is a random number generator. The device contain potentiometer which control voltage so it generates a sequence of numbers or symbols that cannot be reasonably predicted better by a random chance. Random number generators have applications in gambling, statistical sampling, computer simulation, cryptography, completely randomized design, and various other areas.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Rng

Example Key Functions

• rng_cfg_setup Config Object Initialization function.

void rng_cfg_setup ( rng_cfg_t *cfg );

• rng_init Initialization function.

err_t rng_init ( rng_t *ctx, rng_cfg_t *cfg );

• rng_default_cfg Click Default Configuration function.

void rng_default_cfg ( rng_t *ctx );

• rng_get_voltage This function gets voltage in millivolts.

float rng_get_voltage ( rng_t *ctx );

• rng_set_config This function sets configuration.

void rng_set_config ( rng_t *ctx, uint16_t conf_data );

• rng_set_vref This function sets desired vref.

void rng_set_vref ( rng_t *ctx, uint16_t vref_mv );

Application Init

Initializes driver, then sets configuration and voltage reference.

void application_init ( void )
{
    log_cfg_t log_cfg;
    rng_cfg_t cfg;

    /** 
     * 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.

    rng_cfg_setup( &cfg );
    RNG_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    rng_init( &rng, &cfg );

    rng_default_cfg( &rng );
}

Application Task

It reads ADC value from AIN0 channel then converts it to voltage and displays the result on USB UART each second.

void application_task ( void )
{
    float voltage;

    voltage = rng_get_voltage( &rng );

    log_printf( &logger, "Voltage from AIN0: %.2f mV\r\n", voltage );
    log_printf( &logger, "-----------------------\r\n" );
    Delay_ms ( 1000 );
}

Application Output

This Click board can be interfaced and monitored in two ways:

• Application Output - Use the "Application Output" window in Debug mode for real-time data monitoring. Set it up properly by following this tutorial.
• UART Terminal - Monitor data via the UART Terminal using a USB to UART converter. For detailed instructions, check out this tutorial.

Additional Notes and Information

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.

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