Save time with efficient and accurate weight measurement using MAX11270 and STM32F091RC

/*!
 * @file main.c
 * @brief LoadCell6 Click example
 *
 * # Description
 * This library contains API for the Load Cell 6 Click driver.
 * The library initializes and defines the SPI bus drivers to read status and ADC data. 
 * The library also includes a function for tare, calibration and weight measurement.
 *
 * The demo application is composed of two sections :
 *
 * ## Application Init
 * Initialization of SPI module and log UART.
 * After driver initialization, app performs the power on
 * sets tare the scale, calibrate scale and start measurements.
 *
 * ## Application Task
 * This is an example that demonstrates the use of the Load Cell 6 click board™.
 * The Load Cell 6 click board™ can be used to measure weight and
 * shows the measurement of scales in grams [ g ].
 * Results are being sent to the Usart Terminal where you can track their changes.
 *
 * @author Nenad Filipovic
 *
 */

#include "board.h"
#include "log.h"
#include "loadcell6.h"

static loadcell6_t loadcell6;
static log_t logger;
static loadcell6_data_t cell_data;

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    loadcell6_cfg_t loadcell6_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.
    loadcell6_cfg_setup( &loadcell6_cfg );
    LOADCELL6_MAP_MIKROBUS( loadcell6_cfg, MIKROBUS_1 );
    if ( SPI_MASTER_ERROR == loadcell6_init( &loadcell6, &loadcell6_cfg ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    if ( LOADCELL6_ERROR == loadcell6_default_cfg( &loadcell6 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
    Delay_ms( 1000 );
    
    log_printf( &logger, "-------------------------\r\n");
    log_printf( &logger, "     Tare the scale :    \r\n");
    log_printf( &logger, "- - - - - - - - - - - - -\r\n");
    log_printf( &logger, " >> Remove all object << \r\n");
    log_printf( &logger, "- - - - - - - - - - - - -\r\n");
    log_printf( &logger, " In the following 10 sec \r\n");
    log_printf( &logger, " please remove all object\r\n");
    log_printf( &logger, "     from the scale.     \r\n");
    Delay_ms( 10000 );

    log_printf( &logger, "-------------------------\r\n");
    log_printf( &logger, "    Start tare scales    \r\n");
    loadcell6_tare( &loadcell6, &cell_data );
    Delay_ms( 500 );

    log_printf( &logger, "-------------------------\r\n");
    log_printf( &logger, "   Tarring is complete   \r\n");
    log_printf( &logger, "-------------------------\r\n");
    log_printf( &logger, "    Calibrate Scale :    \r\n");
    log_printf( &logger, "- - - - - - - - - - - - -\r\n");
    log_printf( &logger, "   >>> Load etalon <<<   \r\n");
    log_printf( &logger, "- - - - - - - - - - - - -\r\n");
    log_printf( &logger, " In the following 10 sec \r\n");
    log_printf( &logger, "place 200g weight etalon\r\n");
    log_printf( &logger, "    on the scale for     \r\n");
    log_printf( &logger, "   calibration purpose.  \r\n");
    Delay_ms( 10000 );

    log_printf( &logger, "-------------------------\r\n");
    log_printf( &logger, "    Start calibration    \r\n");

    if ( LOADCELL6_OK == loadcell6_calibration( &loadcell6, LOADCELL6_WEIGHT_200G, &cell_data )  ) 
    {
        log_printf( &logger, "-------------------------\r\n");
        log_printf( &logger, "    Calibration  Done    \r\n");
        log_printf( &logger, "- - - - - - - - - - - - -\r\n");
        log_printf( &logger, "  >>> Remove etalon <<<  \r\n");
        log_printf( &logger, "- - - - - - - - - - - - -\r\n");
        log_printf( &logger, " In the following 5 sec  \r\n");
        log_printf( &logger, "    remove 200g weight   \r\n");
        log_printf( &logger, "   etalon on the scale.  \r\n");
        Delay_ms( 5000 );
    }
    else 
    {
        log_printf( &logger, "-------------------------\r\n");
        log_printf( &logger, "   Calibration  Error   \r\n");
        for ( ; ; );
    }

    log_printf( &logger, "-------------------------\r\n");
    log_printf( &logger, "   Start measurements :  \r\n");
    log_printf( &logger, "-------------------------\r\n");
}

void application_task ( void )
{
    static float weight_g;
    
    if ( LOADCELL6_OK == loadcell6_get_weight( &loadcell6, &cell_data, &weight_g ) )
    {
        log_printf(&logger, "   Weight : %.2f g\r\n", weight_g ); 
    }
}

void main ( void )
{
    application_init( );

    for ( ; ; )
    {
        application_task( );
    }
}

// ------------------------------------------------------------------------ END