rmstodc

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RMS to DC Click

RMS to DC 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 : I2C type

Software Support

Example Description

This application convert the RMS of the input signal into a DC voltage.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.RmstoDc

Example Key Functions

• rmstodc_cfg_setup Config Object Initialization function.

void rmstodc_cfg_setup ( rmstodc_cfg_t *cfg );

• rmstodc_init Initialization function.

err_t rmstodc_init ( rmstodc_t *ctx, rmstodc_cfg_t *cfg );

• rmstodc_generic_write Generic write function.

void rmstodc_generic_write ( rmstodc_t *ctx, uint8_t reg, uint8_t *data_buf, uint8_t len );

• rms2dc_read_adc ADC Read function.

uint16_t rms2dc_read_adc ( rmstodc_t *ctx );

• rms2dc_vout_adc Get Output Voltage function.

uint16_t rms2dc_vout_adc ( rmstodc_t *ctx, uint16_t vcc_sel );

• rms2dc_enable Enable function.

void rms2dc_enable ( rmstodc_t *ctx, uint8_t state );

Application Init

Initializes I2C interface and turns ON the device.

void application_init ( void )
{
    log_cfg_t log_cfg;
    rmstodc_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.

    rmstodc_cfg_setup( &cfg );
    RMSTODC_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    rmstodc_init( &rmstodc, &cfg );
    
    rms2dc_enable( &rmstodc, RMS2DC_DEVICE_EN );
}

Application Task

Reads DC output voltage calculated to mV and sends results to the serial terminal.

void application_task ( void )
{
    out_volt_dc = rms2dc_vout_adc( &rmstodc, RMS2DC_VCC_3V3 );
    
    log_printf(&logger,"%u mV\r\n",out_volt_dc);
    
    Delay_ms ( 300 );
}

Note

Note : The input voltage frequency should be in the range from 50Hz to 250kHz. Also the input voltage amplitude must be lower than 5V. In this conditions the device can convert the RMS signal, in every form, to DC signal.

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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