lem

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LEM Click

LEM 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 : Jovan Stajkovic
• Date : Dec 2019.
• Type : SPI type

Software Support

Example Description

Demo app measures and displays current by using LEM Click board.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Lem

Example Key Functions

• lem_cfg_setup Config Object Initialization function.

void lem_cfg_setup ( lem_cfg_t *cfg );

• lem_init Initialization function.

err_t lem_init ( lem_t *ctx, lem_cfg_t *cfg );

• lem_get_current Function is used to read current in amperes or milliamperes.

float lem_get_current ( lem_t *ctx, float coef );

Application Init

Initalizes SPI, LOG and Click drivers.

void application_init ( void )
{
    log_cfg_t log_cfg;
    lem_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.

    lem_cfg_setup( &cfg );
    LEM_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    lem_init( &lem, &cfg );
    log_printf( &logger, "---------------------\r\n" );
    log_printf( &logger, "      LEM Click      \r\n" );
    log_printf( &logger, "---------------------\r\n" );
}

Application Task

This is an example that shows the capabilities of the LEM Click by measuring current passing through the conductor placed through the hole on the sensor.

void application_task ( void )
{
    current = lem_get_current( &lem, LEM_MILIAMP_COEF );
    
    log_printf( &logger, " Current : %.2f mA \r\n", current );
    log_printf( &logger, "---------------------\r\n" );
    Delay_ms ( 1000 );
}

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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