Thermo 23 Click

Thermo 23 Click is a compact add-on board that provides an accurate temperature measurement. This board features the TMP144, a high-precision digital temperature sensor from Texas Instruments. The temperature sensor in the TMP144 is the chip itself, that houses temperature sensor circuitry, 12-bit analog-to-digital converter (ADC), a control logic, and a serial interface block in one package. Characterized by its high accuracy (up to ±0.5°C typical) and high resolution of 0.0625°C, this temperature sensor provides temperature data to the host controller with a configurable UART interface.

Click Product page

Click library

• Author : Stefan Filipovic
• Date : Mar 2022.
• Type : UART type

Software Support

We provide a library for the Thermo 23 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 from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for Thermo 23 Click driver.

Standard key functions :

• thermo23_cfg_setup Config Object Initialization function.

  void thermo23_cfg_setup ( thermo23_cfg_t *cfg );

• thermo23_init Initialization function.

  err_t thermo23_init ( thermo23_t *ctx, thermo23_cfg_t *cfg );

• thermo23_default_cfg Click Default Configuration function.

  err_t thermo23_default_cfg ( thermo23_t *ctx );

Example key functions :

• thermo23_set_config This function sets the configuration register.

  err_t thermo23_set_config ( thermo23_t *ctx, uint16_t config );

• thermo23_read_temperature This function reads the temperature value in Celsius.

  err_t thermo23_read_temperature ( thermo23_t *ctx, float *temperature );

• thermo23_read_command This function reads data from the selected command by using UART serial interface.

  err_t thermo23_read_command ( thermo23_t *ctx, uint8_t cmd, uint16_t *data_out );

Example Description

This example demonstrates the use of Thermo 23 Click board by reading and displaying the temperature measurements.

The demo application is composed of two sections :

Application Init

Initializes the driver and logger, and performs the Click default configuration which enables continuous conversion and sets the conversion rate to 1 Hz.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    thermo23_cfg_t thermo23_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.
    thermo23_cfg_setup( &thermo23_cfg );
    THERMO23_MAP_MIKROBUS( thermo23_cfg, MIKROBUS_1 );
    if ( UART_ERROR == thermo23_init( &thermo23, &thermo23_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( THERMO23_ERROR == thermo23_default_cfg ( &thermo23 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }

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

Application Task

Reads the temperature measurement in Celsius and displays the results on the USB UART approximately once per second.

void application_task ( void )
{
    float temperature;
    if ( THERMO23_OK == thermo23_read_temperature ( &thermo23, &temperature ) ) 
    {
        log_printf( &logger, " Temperature : %.2f C\r\n\n", temperature );
        Delay_ms ( 1000 );
    }
}

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.Thermo23

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. UART terminal is available in all MikroElektronika compilers.