rtd2

---

RTD 2 Click

RTD 2 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.

---

Click Library

• Author : MikroE Team
• Date : Sep 2020.
• Type : SPI type

Software Support

Example Description

RTD 2 Click board is commonly used for measuring ambient temperature from the PT100 3-wire temperature probe.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Rtd2

Example Key Functions

• rtd2_cfg_setup Config Object Initialization function.

void rtd2_cfg_setup ( rtd2_cfg_t *cfg ); 

• rtd2_init Initialization function.

err_t rtd2_init ( rtd2_t *ctx, rtd2_cfg_t *cfg );

• rtd2_default_cfg Click Default Configuration function.

void rtd2_default_cfg ( rtd2_t *ctx );

• rtd2_check_new_data_ready The function check new data ready of the 4ADS1247 24-Bit, 2-kSPS, Analog-To-Digital Converters With Programmable Gain Amplifier (PGA) For Sensor Measurement on the RTD 2 Click board.

uint8_t rtd2_check_new_data_ready ( rtd2_t *ctx );

• rtd2_get_temperature The function read output data and return ambient temperature from the PT100 3-wire temperature probe wired to the 4ADS1247 24-Bit, 2-kSPS, Analog-To-Digital Converters With Programmable Gain Amplifier (PGA) For Sensor Measurement on the RTD 2 Click board.

float rtd2_get_temperature ( rtd2_t *ctx );

• rtd2_enable_start The function enables ADC conversion of the 4ADS1247 24-Bit, 2-kSPS, Analog-To-Digital Converters With Programmable Gain Amplifier (PGA) For Sensor Measurement on the RTD 2 Click.

void rtd2_enable_start ( rtd2_t *ctx, uint8_t en_start );

Application Init

Initializes the driver, performs a hardware reset, and sets the Click default configuration.

void application_init ( void )
{
    log_cfg_t log_cfg;
    rtd2_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.
    rtd2_cfg_setup( &cfg );
    RTD2_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    rtd2_init( &rtd2, &cfg );
    Delay_ms ( 200 );

    log_printf( &logger, "----- Hardware Reset ------\r\n" );
    rtd2_hw_reset( &rtd2 );
    Delay_ms ( 100 );
    
    log_printf( &logger, "-- Default configuration --\r\n" );
    rtd2_default_cfg( &rtd2 );
    Delay_ms ( 1000 );
    
    log_printf( &logger, "--------------------------\r\n" );
    log_printf( &logger, "     Start Measurement    \r\n" );
    log_printf( &logger, "--------------------------\r\n" );
    Delay_ms ( 100 );
}

Application Task

Reads an ambient temperature measured by the PT100 3-wire temperature probe connected to the RTD 2 Click board, and logs the results on the USB UART each second.

void application_task ( void )
{
    if ( rtd2_check_new_data_ready( &rtd2 ) == RTD2_NEW_DATA_IS_READY )
    {
        temperature = rtd2_get_temperature( &rtd2 );
        log_printf( &logger, " Temperature : %.2f C\r\n", temperature );
        log_printf( &logger, "--------------------------\r\n");
        Delay_ms ( 1000 );
    }
    else
    {
        rtd2_enable_start( &rtd2, RTD2_START_CONVERSION_DISABLE );
        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.

---