current9

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Current 9 Click

Current 9 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 : Stefan Filipovic
• Date : Aug 2022.
• Type : ADC/I2C type

Software Support

Example Description

This example demonstrates the use of Current 9 Click board by reading and displaying the input current measurements.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Current9

Example Key Functions

• current9_cfg_setup Config Object Initialization function.

void current9_cfg_setup ( current9_cfg_t *cfg );

• current9_init Initialization function.

err_t current9_init ( current9_t *ctx, current9_cfg_t *cfg );

• current9_read_voltage This function reads raw ADC value and converts it to proportional voltage level.

err_t current9_read_voltage ( current9_t *ctx, float *voltage );

• current9_read_current This function reads the input current level [A] based on @b CURRENT9_NUM_CONVERSIONS of voltage measurements.

err_t current9_read_current ( current9_t *ctx, float *current );

• current9_set_vref This function sets the voltage reference for Current 9 Click driver.

err_t current9_set_vref ( current9_t *ctx, float vref );

Application Init

Initializes the driver and logger.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    current9_cfg_t current9_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.
    current9_cfg_setup( &current9_cfg );
    CURRENT9_MAP_MIKROBUS( current9_cfg, MIKROBUS_1 );
    err_t init_flag = current9_init( &current9, &current9_cfg );
    if ( ( ADC_ERROR == init_flag ) || ( I2C_MASTER_ERROR == init_flag ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    log_info( &logger, " Application Task " );
}

Application Task

Reads the input current measurements and displays the results on the USB UART approximately once per second.

void application_task ( void )
{
    float current = 0;
    if ( CURRENT9_OK == current9_read_current ( &current9, &current ) ) 
    {
        log_printf( &logger, " Current : %.3f[A]\r\n\n", current );
        Delay_ms ( 1000 );
    }
}

Note

For better accuracy, set the voltage reference by using the @b current9_set_vref function, increase the number of conversions by modifying the @b CURRENT9_NUM_CONVERSIONS macro, and adjust the @b CURRENT9_ZERO_CURRENT_OFFSET voltage value.

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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