co23

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CO2 3 Click

CO2 3 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 : Nenad Filipovic
• Date : Feb 2023.
• Type : I2C type

Software Support

Example Description

This library contains API for CO2 3 Click driver. This driver provides the functions for sensor configuration and reading the CO2 gas concentration in the air.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.CO23

Example Key Functions

• co23_cfg_setup Config Object Initialization function.

void co23_cfg_setup ( co23_cfg_t *cfg );

• co23_init Initialization function.

err_t co23_init ( co23_t *ctx, co23_cfg_t *cfg );

• co23_default_cfg Click Default Configuration function.

err_t co23_default_cfg ( co23_t *ctx );

• co23_get_co2_ppm CO2 3 get CO2 concentration function.

err_t co23_get_co2_ppm ( co23_t *ctx, uint16_t *co2_ppm );

• co23_set_meas_cfg CO2 3 set measurement configuration function.

err_t co23_set_meas_cfg ( co23_t *ctx, co23_meas_cfg_t meas_cfg );

• co23_set_pressure_ref CO2 3 set reference pressure function.

err_t co23_set_pressure_ref ( co23_t *ctx, uint16_t pressure_mbar );

Application Init

The initialization of I2C or UART module, log UART, and additional pins. After the driver init, the app executes a default configuration.

void application_init ( void ) 
{
    log_cfg_t log_cfg;    /**< Logger config object. */
    co23_cfg_t co23_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.
    co23_cfg_setup( &co23_cfg );
    CO23_MAP_MIKROBUS( co23_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == co23_init( &co23, &co23_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    Delay_ms ( 100 );
    
    if ( CO23_ERROR == co23_default_cfg ( &co23 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
    Delay_ms ( 100 );
    
    log_info( &logger, " Application Task " );
    log_printf( &logger, "-----------------------\r\n" );
    Delay_ms ( 100 );
}

Application Task

This example demonstrates the use of the CO2 3 Click board™. The device starts a single measurement sequence, measures and display air CO2 gas concentration (ppm). Results are being sent to the UART Terminal, where you can track their changes.

void application_task ( void ) 
{     
    co23_meas_cfg_t meas_cfg;
    meas_cfg.op_mode = CO23_OP_MODE_SINGLE;
    co23_set_meas_cfg( &co23, meas_cfg );
    Delay_ms ( 1000 );
    
    uint16_t co2_ppm = 0;
    co23_get_co2_ppm( &co23, &co2_ppm );
    log_printf( &logger, " CO2: %d ppm\r\n", co2_ppm );
    log_printf( &logger, "-----------------------\r\n" );
    Delay_ms ( 100 );
}

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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