Clock Gen 2 Click

Clock Gen 2 Click is an accurate square wave generator that can generate a clock signal in the range from 260kHz to 66.6MHz.

Click Product page

Click library

• Author : MikroE Team
• Date : Dec 2019.
• Type : I2C type

Software Support

We provide a library for the ClockGen2 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 form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for ClockGen2 Click driver.

Standard key functions :

• Config Object Initialization function.

  void clockgen2_cfg_setup ( clockgen2_cfg_t *cfg );

• Initialization function.

  CLOCKGEN2_RETVAL clockgen2_init ( clockgen2_t ctx, clockgen2_cfg_t cfg );

• Click Default Configuration function.

  void clockgen2_default_cfg ( clockgen2_t *ctx );

Example key functions :

• Function for enabling/disabling of the clock output.

  void clockgen2_output_enable ( clockgen2_t *ctx, uint8_t state );

• Function used for enabling/disabling auto settings preservation.

  void clockgen2_auto_setting_preserve ( clockgen2_t *ctx, uint8_t state );

• Function for setting the main clock prescaler.

  void clockgen2_set_prescaler ( clockgen2_t *ctx, uint8_t val );

Examples Description

This application enables generation of square waved clock signal in range from 260 kHz to 66,6 MHz

The demo application is composed of two sections :

Application Init

Driver initialization.

void application_init ( void )
{
    log_cfg_t log_cfg;
    clockgen2_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.

    clockgen2_cfg_setup( &cfg );
    CLOCKGEN2_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    clockgen2_init( &clockgen2, &cfg );

    Delay_ms ( 100 );
}

Application Task

Changes the prescaler and enables/disables the clock output.

void application_task ( void )
{
    //  Task implementation.

    char i;

     for ( i = 5; i< 8; i++ )
     {
       clockgen2_set_prescaler( &clockgen2, i );
       clockgen2_output_enable( &clockgen2, 1 );
       Delay_ms ( 1000 );
       Delay_ms ( 1000 );

       clockgen2_output_enable( &clockgen2, 0 );
       Delay_ms ( 1000 );
       Delay_ms ( 1000 );
     }
}

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.ClockGen2

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. The terminal available in all Mikroelektronika compilers, or any other terminal application of your choice, can be used to read the message.