rtd

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RTD Click

RTD 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 : Feb 2020.
• Type : SPI type

Software Support

Example Description

This app measures temperature and converts the data to celsius degrees.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Rtd

Example Key Functions

• rtd_cfg_setup Config Object Initialization function.

void rtd_cfg_setup ( rtd_cfg_t *cfg ); 

• rtd_init Initialization function.

err_t rtd_init ( rtd_t *ctx, rtd_cfg_t *cfg );

• rtd_read_register This function reads data from the chosen register.

uint8_t rtd_read_register ( rtd_t *ctx, uint8_t reg_address );

• rtd_read_temperature This function reads data from temperature registers.

uint16_t rtd_read_temperature ( rtd_t *ctx );

• rtd_convert_temperature This function convert data from temperature registers.

float rtd_convert_temperature ( rtd_t *ctx, uint16_t input_data, uint16_t referent_resistance );

Application Init

Initializes RTD Click driver, and sets the proper configuration mode for three wire RTD.

 
void application_init ( void )
{
    log_cfg_t log_cfg;
    rtd_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.
    rtd_cfg_setup( &cfg );
    RTD_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    rtd_init( &rtd, &cfg );
    
    RTD_SET_DATA_SAMPLE_EDGE;

    rtd_write_register( &rtd, RTD_CONFIGURATION, 0xD0 );
    Delay_ms ( 100 );
    log_info( &logger, " Application Task " );
}

Application Task

Measures temperature, converts the data to celsius degrees, and displays it on the USB UART.

void application_task ( void )
{
    uint16_t read_value = 0;
    float converted_value = 0;

    read_value = rtd_read_temperature( &rtd );
    converted_value = rtd_convert_temperature( &rtd, read_value, RTD_REF_RESISTANCE_470 );

    log_printf( &logger, " Current temperature: %.2f \r\n", converted_value );

    Delay_ms ( 300 );
}

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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