vtohz2

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V to Hz 2 Click

V to Hz 2 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 : jan 2020.
• Type : PWM type

Software Support

Example Description

This appliaction enables usage of a converter for analog voltage input signal into a pulse wave signal of a certain frequency.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.VToHz2

Example Key Functions

• vtohz2_cfg_setup Config Object Initialization function.

void vtohz2_cfg_setup ( vtohz2_cfg_t *cfg );

• vtohz2_init Initialization function.

err_t vtohz2_init ( vtohz2_t *ctx, vtohz2_cfg_t *cfg );

• vtohz2_get_freq_out Function gets the out frequency on mikrobus INT pin.

uint8_t vtohz2_get_freq_out ( vtohz2_t *ctx );

• vtohz2_enable Function performs enabling and disabling of the device.

void vtohz2_enable ( vtohz2_t *ctx, uint8_t state );

• vtohz2_pwm_start This function starts PWM module.

void vtohz2_pwm_start ( vtohz2_t *ctx );

Application Init

Initializes driver and enables the Click board.

void application_init ( void )
{
    log_cfg_t log_cfg;
    vtohz2_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.

    vtohz2_cfg_setup( &cfg );
    VTOHZ2_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    vtohz2_init( &vtohz2, &cfg );

    vtohz2_enable( &vtohz2, VTOHZ2_ENABLE );
    vtohz2_pwm_start( &vtohz2 );
}

  

Application Task

Sets the output frequency by incrementing the pwm duty cycle from 0 to 100% in an infinite loop. Results are being sent to USB UART terminal.

void application_task ( void )
{
    for ( duty_cycle = 0; duty_cycle <= 1.0; duty_cycle += 0.01 )
    {
        vtohz2_set_duty_cycle ( &vtohz2, duty_cycle );
        log_printf( &logger," PWM Duty: %.2f%%\r\n", duty_cycle * 100 );
        Delay_ms ( 100 );
    }
    log_printf( &logger, "------------------------------\r\n" );
}

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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