使用TMCS1100A4和PIC18F25K42实现符合行业标准的精确电流测量

/*!
 * @file main.c
 * @brief HallCurrent12 Click example
 *
 * # Description
 * This library contains API for Hall Current 12 Click driver.
 * The demo application reads ADC voltage ( V ) and current ( A ).
 *
 * The demo application is composed of two sections :
 *
 * ## Application Init
 * Initializes the driver and logger and calibrates the device offset.
 *
 * ## Application Task
 * This is an example that demonstrates the use of the Hall Current 12 Click board™.
 * In this example, we read and display the ADC voltage ( V ) and current ( A ) data.
 * Results are being sent to the Usart Terminal where you can track their changes.
 *
 * @note
 * Switches: 
 *   Sensitivity : Low ( GAIN = 1 ),
 *   Vout_Sel    : AN  ( Analog interface ),
 *   Vref_Sel    : VCC/2 ( bidirectional measurement ).
 *
 * @author Nenad Filipovic
 *
 */

#include "board.h"
#include "log.h"
#include "hallcurrent12.h"

static hallcurrent12_t hallcurrent12;
static log_t logger;

void application_init ( void ) 
{
    log_cfg_t log_cfg;                      /**< Logger config object. */
    hallcurrent12_cfg_t hallcurrent12_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.
    hallcurrent12_cfg_setup( &hallcurrent12_cfg );
    HALLCURRENT12_MAP_MIKROBUS( hallcurrent12_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == hallcurrent12_init( &hallcurrent12, &hallcurrent12_cfg ) ) 
    {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );
        for ( ; ; );
    }
    
    log_info( &logger, " Calibrating device, remove input current in the next 5 seconds..." );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    
    if ( I2C_MASTER_ERROR == hallcurrent12_calibration ( &hallcurrent12 ) )
    {
        log_error( &logger, " Calibration Error. " );
        log_info( &logger, " Please, run program again... " );
        for ( ; ; );
    }
    log_info( &logger, " Calibration done!" );

    log_info( &logger, " Application Task " );
    log_printf( &logger, "--------------------------\r\n" );
    Delay_ms ( 100 );
}

void application_task ( void ) 
{
    static float adc_voltage = 0;
    static float current = 0;
    if ( HALLCURRENT12_OK == hallcurrent12_get_adc( &hallcurrent12, &adc_voltage ) )
    {
        log_printf( &logger, " ADC voltage : %.3f V \r\n", adc_voltage );
    }
    if ( HALLCURRENT12_OK == hallcurrent12_get_current ( &hallcurrent12, &current ) )
    {
        log_printf( &logger, " Current     : %.3f A \r\n", current );
        log_printf( &logger, "--------------------------\r\n" );
    }
    Delay_ms ( 1000 );
}

int main ( void ) 
{
    /* Do not remove this line or clock might not be set correctly. */
    #ifdef PREINIT_SUPPORTED
    preinit();
    #endif
    
    application_init( );
    
    for ( ; ; ) 
    {
        application_task( );
    }

    return 0;
}

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