no2

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NO 2 Click

NO2 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 : MikroE Team
• Date : Jan 2020.
• Type : I2C type

Software Support

Example Description

This application measures NO2.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.No2

Example Key Functions

• no2_cfg_setup Config Object Initialization function.

void no2_cfg_setup ( no2_cfg_t *cfg );

• no2_init Initialization function.

err_t no2_init ( no2_t *ctx, no2_cfg_t *cfg );

• no2_default_cfg Click Default Configuration function.

void no2_default_cfg ( no2_t *ctx );

• no2_enable Device Enable function.

void no2_enable ( no2_t *ctx, uint8_t state );

• no2_read_adc Function for read ADC sensor data.

uint16_t no2_read_adc ( no2_t *ctx );

• no2_get_no_2_ppm Get NO2 Data function.

float no2_get_no_2_ppm ( no2_t *ctx );

Application Init

Initializes I2C driver and device configuration.

void application_init ( void )
{
    log_cfg_t log_cfg;
    no2_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.

    no2_cfg_setup( &cfg );
    NO2_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    no2_init( &no2, &cfg );

    no2_default_cfg( &no2 );

    log_printf( &logger, "NO2 is initialized \r\n" );
    Delay_ms ( 300 );
}

Application Task

Gets NO2 (Nitrogen dioxide) data as ppm value and logs to USBUART every 500ms.

void application_task ( void )
{
    float no2_value;

    no2_value = no2_get_no_2_ppm( &no2 );
    log_printf( &logger, "NO2 value : %.2f ppm \r\n", no2_value );
    Delay_ms ( 500 );
}

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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