no22

---

NO2 2 Click

NO2 2 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.

---

Click Library

• Author : MikroE Team
• Date : dec 2019.
• Type : SPI type

Software Support

Example Description

Measure the level of NO2

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.NO22

Example Key Functions

• no22_cfg_setup Config Object Initialization function.

void no22_cfg_setup ( no22_cfg_t *cfg );

• no22_init Initialization function.

err_t no22_init ( no22_t *ctx, no22_cfg_t *cfg );

• no22_default_cfg Click Default Configuration function.

void no22_default_cfg ( no22_t *ctx );

• no22_read_data Function for reading ADC data.

uint16_t no22_read_data ( no22_t *ctx );

• no22_get_ppb Function for reading ppb data.

float no22_get_ppb ( no22_t *ctx );

• no22_set_pht_state Function for setting pht pin.

uint8_t no22_set_pht_state ( no22_t *ctx, uint8_t state );

Application Init

Driver init

void application_init ( void )
{
    log_cfg_t log_cfg;
    no22_cfg_t cfg;
    uint8_t error_data;

    /** 
     * 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.

    
    no22_cfg_setup( &cfg );
    NO22_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    no22_init( &no22, &cfg );

    error_data = no22_set_pht_state( &no22, NO22_PIN_STATE_LOW );

    if ( error_data == NO22_DEVICE_ERROR )
    {
        log_printf( &logger, "Device error \r\n" );
        for ( ; ; );
    }

    log_printf( &logger, "***** App init ***** \r\n" );
}

Application Task

Measures in span of 1 seconc ppb of NO2

void application_task ( )
{
    uint16_t temp_data_read;
    float data_ppb;
    
    temp_data_read = no22_read_data( &no22 );
    log_printf( &logger, "ADC: %d \n\r", temp_data_read );
    
    data_ppb = no22_get_ppb( &no22 );
    log_printf( &logger, "PPB: %f \r\n", data_ppb );
    
    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.

---