temphum9

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Temp-Hum 9 Click

TempHum 9 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 : Dec 2019.
• Type : I2C type

Software Support

Example Description

This example demonstrates the use of TempHum 9 Click board by reading and displaying the temperature and humidity measurement results.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.TempHum9

Example Key Functions

• temphum9_cfg_setup Config Object Initialization function.

void temphum9_cfg_setup ( temphum9_cfg_t *cfg ); 

• temphum9_init Initialization function.

err_t temphum9_init ( temphum9_t *ctx, temphum9_cfg_t *cfg );

• temphum9_get_temperature Calculating temperature

float temphum9_get_temperature ( temphum9_t *ctx, uint8_t data_mode );

• temphum9_get_humidity Calculating relative humidity

float temphum9_get_humidity ( temphum9_t *ctx, uint8_t data_mode );

• temhum9_get_data Calculating temperature and relative humidity

void temhum9_get_data ( temphum9_t *ctx, uint8_t data_mode, float *temp, float *hum );

Application Init

Initializes I2C driver and sends SLEEP and WAKEUP commands.

void application_init ( void )
{
    log_cfg_t log_cfg;
    temphum9_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.
    temphum9_cfg_setup( &cfg );
    TEMPHUM9_MAP_MIKROBUS( cfg, MIKROBUS_POSITION_TEMPHUM9 );
    temphum9_init( &temphum9, &cfg );
    Delay_ms ( 100 );

    temphum9_send_command( &temphum9, TEMPHUM9_SLEEP );
    Delay_ms ( 500 );
    temphum9_send_command( &temphum9, TEMPHUM9_WAKEUP );
    Delay_ms ( 500 );
    
    log_info( &logger, " Application Task " );
}

Application Task

Performs simultaneous temperature and relative humidity measurements and logs both values on the USB UART once per second.

void application_task( )
{
    float temperature = 0;
    float humidity = 0;
    
    temhum9_get_data ( &temphum9, TEMPHUM9_NORMAL_MODE, &temperature, &humidity );
    
    log_printf( &logger, " Temperature: %.2f degC\r\n", temperature );

    log_printf( &logger, " Relative humidity: %.2f %%\r\n", humidity );
    
    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.

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