Library Description

The library covers all the necessary functions to control Clock Gen 5 Click board™. Library performs a standard SPI interface communication.

Key functions:

• void clockgen5_out_enable ( uint8_t en_out ) - Enable output function.
• void clockgen5_set_config ( uint8_t cfg ) - Set configuration function.
• void clockgen5_set_freq ( float freq ) - Set frequency function.

Examples description

The application is composed of three sections :

• System Initialization - Initializes SPI, set RST and CS pin as outputs, begins to write log.
• Application Initialization - Initialization driver enables - SPI, set output configuration CLK + 180°, also write log.
• Application Task - (code snippet) This is an example that demonstrates the use of the Clock Gen 5 Click board™. In this example, we adjusts different frequencies every 3 sec. Results are being sent to the Usart Terminal where you can track their changes.

void application_task ( )
{
    clockgen5_set_freq( 12000.0 );
    mikrobus_logWrite( "-----------------------", _LOG_LINE );
    mikrobus_logWrite( "        12.0 MHz       ", _LOG_LINE );
    Delay_ms( 3000 );

    clockgen5_set_freq( 8000.0 );
    mikrobus_logWrite( "-----------------------", _LOG_LINE );
    mikrobus_logWrite( "         8.0 MHz       ", _LOG_LINE );
    Delay_ms( 3000 );

    clockgen5_set_freq( 5500.0 );
    mikrobus_logWrite( "-----------------------", _LOG_LINE );
    mikrobus_logWrite( "         5.5 MHz       ", _LOG_LINE );
    Delay_ms( 3000 );
    
    clockgen5_set_freq( 2700.0 );
    mikrobus_logWrite( "-----------------------", _LOG_LINE );
    mikrobus_logWrite( "         2.7 MHz       ", _LOG_LINE );
    Delay_ms( 3000 );

    clockgen5_set_freq( 800.0 );
    mikrobus_logWrite( "-----------------------", _LOG_LINE );
    mikrobus_logWrite( "         0.8 MHz       ", _LOG_LINE );
    Delay_ms( 3000 );
    
    clockgen5_set_freq( 200.0 );
    mikrobus_logWrite( "-----------------------", _LOG_LINE );
    mikrobus_logWrite( "         0.2 MHz       ", _LOG_LINE );
    Delay_ms( 3000 );
}

Other mikroE Libraries used in the example:

• SPI
• UART

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.