感受纯净空气，感谢 MiCS-VZ-89TE 和 MK64FN1M0VDC12

/*!
 * \file 
 * \brief AirQuality7 Click example
 * 
 * # Description
 * This demo application measures air quality.
 *
 * The demo application is composed of two sections :
 * 
 * ## Application Init 
 * Initializes I2C driver and reads revision date of the module. 
 * If CRC check is OK allows the program to go on, otherwise, it displays a message that
 * the program needs to be restarted.
 * 
 * ## Application Task  
 * Reads air quality status every 1500ms and shows the results on the USB UART.
 * 
 * \author MikroE Team
 *
 */
// ------------------------------------------------------------------- INCLUDES

#include "board.h"
#include "log.h"
#include "airquality7.h"

// ------------------------------------------------------------------ VARIABLES

static airquality7_t airquality7;
static log_t logger;

uint16_t airquality7_tvoc_ppb;
uint16_t airquality7_co2_ppm;
uint32_t airquality7_res_val_ohm;
airquality7_err_t airquality7_err_code;

// ------------------------------------------------------ APPLICATION FUNCTIONS

void application_init ( void )
{
    log_cfg_t log_cfg;
    airquality7_cfg_t cfg;
    
    uint8_t airquality7_rev_year       = AIRQUALITY7_DUMMY;
    uint8_t airquality7_rev_month      = AIRQUALITY7_DUMMY;
    uint8_t airquality7_rev_day        = AIRQUALITY7_DUMMY;
    uint8_t airquality7_rev_ascii_code = AIRQUALITY7_DUMMY;

    /** 
     * 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.

    airquality7_cfg_setup( &cfg );
    AIRQUALITY7_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    airquality7_init( &airquality7, &cfg );

    
    airquality7_tvoc_ppb    = AIRQUALITY7_DUMMY;
    airquality7_co2_ppm     = AIRQUALITY7_DUMMY;
    airquality7_res_val_ohm = AIRQUALITY7_DUMMY;

    airquality7_err_code = airquality7_get_revision( &airquality7, 
                                                     &airquality7_rev_year,
                                                     &airquality7_rev_month,
                                                     &airquality7_rev_day,
                                                     &airquality7_rev_ascii_code );
    
    if ( airquality7_err_code == AIRQUALITY7_ERR_OK )
    {
        log_printf( &logger, " Revision date: %.2u.%.2u.%.2u\r\n", ( uint16_t ) airquality7_rev_day, 
                                                                   ( uint16_t ) airquality7_rev_month,
                                                                   ( uint16_t ) airquality7_rev_year );
        log_printf( &logger, " ASCII code for a charter: %u \r\n", ( uint16_t ) airquality7_rev_ascii_code );
    }
    else
    {
        log_printf( &logger, "CRC ERROR READING REVISION. \r\n" );
        Delay_ms ( 1000 );
        
        for ( ; ; )
        {
            log_printf( &logger, "PLEASE, RESTART YOUR SYSTEM...\r\n" );
            Delay_ms ( 1000 );
            log_printf( &logger, " \r\n \r\n " );
            Delay_ms ( 1000 );
        }
    }
    
    log_printf( &logger, "----------------------------------------- \r\n" );
    Delay_ms ( 500 );
}

void application_task ( void )
{
    airquality7_err_code = airquality7_get_status( &airquality7, 
                                                   &airquality7_tvoc_ppb, 
                                                   &airquality7_co2_ppm,
                                                   &airquality7_res_val_ohm, 
                                                   AIRQUALITY7_NULL );
        
    if ( airquality7_err_code == AIRQUALITY7_ERR_OK )
    {
        uint8_t cnt;

        log_printf( &logger, " tVOC [ppb] = %u \r\n", airquality7_tvoc_ppb );

        log_printf( &logger, " CO2 [ppm] = %u \r\n", airquality7_co2_ppm );

        log_printf( &logger, " Resistor value [ohm] = %lu \r\n", airquality7_res_val_ohm );
        log_printf( &logger, "----------------------------------------- \r\n" );
    }
    
    Delay_ms ( 1000 );
    Delay_ms ( 500 );
}

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;
}

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