TempHum 3 click

Temp&Hum 3 click is a smart environmental temperature and humidity sensor Click board™, packed with features which allow easy and simple integration into any design that requires accurate and reliable humidity and temperature measurements.

click Product page

Click library

• Author : Petar Suknjaja
• Date : Dec 2019.
• Type : I2C type

Software Support

We provide a library for the TempHum3 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for TempHum3 Click driver.

Standard key functions :

• temphum3_cfg_setup Config Object Initialization function.

  void temphum3_cfg_setup ( temphum3_cfg_t *cfg ); 

• temphum3_init Initialization function.

  err_t temphum3_init ( temphum3_t *ctx, temphum3_cfg_t *cfg );

• temphum3_default_cfg Click Default Configuration function.

  void temphum3_default_cfg ( temphum3_t *ctx );

Example key functions :

• temphum3_get_temperature Get temperature value

  float temphum3_get_temperature ( temphum3_t *ctx );

• temphum3_get_huminidy Get humidity value

  float temphum3_get_huminidy ( temphum3_t *ctx );

• temphum3_get_max_hum Get maximum temperature value

  float temphum3_get_max_hum ( temphum3_t *ctx );

Example Description

This application reads temperature and humidity data.

The demo application is composed of two sections :

Application Init

Initializes the driver and performs the click default configuration.

void application_init ( void )
{
    log_cfg_t log_cfg;
    temphum3_cfg_t temphum3_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.
    temphum3_cfg_setup( &temphum3_cfg );
    TEMPHUM3_MAP_MIKROBUS( temphum3_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == temphum3_init( &temphum3, &temphum3_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    temphum3_default_cfg( &temphum3 );

    log_info( &logger, " Application Task " );
}

Application Task

Reads the temperature and huminidy and logs results to the USB UART every 500 ms.

void application_task ( void )
{
    float temperature = 0;
    float humidity = 0;

    temperature = temphum3_get_temperature( &temphum3 );
    log_printf( &logger, " Temperature : %.2f C \r\n", temperature );

    humidity = temphum3_get_humidity( &temphum3 );
    log_printf( &logger, " Humidity : %.1f %% \r\n", humidity );
    Delay_ms ( 500 );
}

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.TempHum3

Additional notes and informations

Depending on the development board you are using, you may need USB UART click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all Mikroelektronika compilers, or any other terminal application of your choice, can be used to read the message.