antopwm2

---

AN to PWM 2 Click

AN to PWM 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.

---

Click Library

• Author : Stefan Filipovic
• Date : Feb 2024.
• Type : I2C type

Software Support

Example Description

This example demonstrates the use of AN to PWM 2 Click board by changing the PWM output frequency from 500kHz to 1MHz in steps of 50kHz.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.ANtoPWM2

Example Key Functions

• antopwm2_cfg_setup Config Object Initialization function.

void antopwm2_cfg_setup ( antopwm2_cfg_t *cfg );

• antopwm2_init Initialization function.

err_t antopwm2_init ( antopwm2_t *ctx, antopwm2_cfg_t *cfg );

• antopwm2_set_frequency This function sets a frequency output in a range from 500kHz to 1MHz by setting the digipot resistance.

err_t antopwm2_set_frequency ( antopwm2_t *ctx, uint32_t freq );

• antopwm2_set_frequency_otp This function sets a frequency output in a range from 500kHz to 1MHz by setting the digipot resistance in OTP mode.

err_t antopwm2_set_frequency_otp ( antopwm2_t *ctx, uint32_t freq );

Application Init

Initializes the driver and logger.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    antopwm2_cfg_t antopwm2_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.
    antopwm2_cfg_setup( &antopwm2_cfg );
    ANTOPWM2_MAP_MIKROBUS( antopwm2_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == antopwm2_init( &antopwm2, &antopwm2_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    log_info( &logger, " Application Task " );
}

Application Task

Changes the PWM output frequency every 5 seconds in steps of 50kHz going through the full range from 500kHz to 1MHz. The currently set frequency will be displayed on the USB UART.

void application_task ( void )
{
    static uint32_t freq = ANTOPWM2_FREQ_MIN;
    if ( ANTOPWM2_OK == antopwm2_set_frequency ( &antopwm2, freq ) )
    {
        log_printf ( &logger, " Frequency: %lu Hz\r\n\n", freq );
    }
    freq += 50000;
    if ( freq > ANTOPWM2_FREQ_MAX )
    {
        freq = ANTOPWM2_FREQ_MIN;
    }
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
}

Note

Applying a voltage of -2.5 to 2.5V on the input will generate the PWM pulse train with a duty cycle linearly proportional to the input voltage.

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.

---