tempprobe

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Temp Probe click

Temp Probe Click is a compact add-on board used as thermocouple temperature monitoring system. This board features the LTC2986, a high accuracy digital temperature measurement system used to directly digitize thermocouples with 0.1°C accuracy and 0.001°C resolution from Analog Devices.

click Product page

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Click library

• Author : Stefan Ilic
• Date : Aug 2021.
• Type : SPI type

Software Support

We provide a library for the TempProbe 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 TempProbe Click driver.

Standard key functions :

• tempprobe_cfg_setup Config Object Initialization function.

void tempprobe_cfg_setup ( tempprobe_cfg_t *cfg );

• tempprobe_init Initialization function.

err_t tempprobe_init ( tempprobe_t *ctx, tempprobe_cfg_t *cfg );

• tempprobe_default_cfg Click Default Configuration function.

err_t tempprobe_default_cfg ( tempprobe_t *ctx );

Example key functions :

• tempprobe_write_word Word Write function.

err_t tempprobe_write_word ( tempprobe_t *ctx, uint16_t reg_addr, uint32_t data_in );

• tempprobe_read_bytes Byte Read function.

err_t tempprobe_read_bytes( tempprobe_t *ctx, uint16_t reg_addr, uint8_t *data_out, uint8_t n_bytes );

• tempprobe_read_temp Temperature Read function.

uint8_t tempprobe_read_temp ( tempprobe_t *ctx, uint16_t sel_channel, float *data_out );

Example Description

This is an example that demonstrates the use of the Temp Probe Click board.

The demo application is composed of two sections :

Application Init

Initializes SPI interface and performs a device configuration for properly working and configures the desired channels.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    tempprobe_cfg_t tempprobe_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.
    tempprobe_cfg_setup( &tempprobe_cfg );
    TEMPPROBE_MAP_MIKROBUS( tempprobe_cfg, MIKROBUS_1 );
    if ( SPI_MASTER_ERROR == tempprobe_init( &tempprobe, &tempprobe_cfg ) ) 
    {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );
        for ( ; ; );
    }
    tempprobe_reset( &tempprobe );
    Delay_ms( 300 );
    if ( TEMPPROBE_ERROR == tempprobe_default_cfg( &tempprobe ) ) 
    {
        log_error( &logger, " Config Error " );
        for ( ; ; );
    }
    Delay_ms( 300 );

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

Application Task

Measure temperatures from all sensors and display the measurements on the serial port.

void application_task ( void ) 
{
    float temperature_k = 0;
    float temperature_pn = 0;
    tempprobe_write_byte( &tempprobe, TEMPPROBE_REG_COMM_STATUS, TEMPPROBE_START_CONV );
    while ( TEMPPROBE_NO_BUSY_STATE != tempprobe_check_busy( &tempprobe ) );

    tempprobe_read_temp( &tempprobe, TEMPPROBE_REG_PN_JUNCTION_CONV_RES, &temperature_pn );
    log_printf( &logger, " PN-Junction: %.2f C\r\n", temperature_pn );
    tempprobe_read_temp( &tempprobe, TEMPPROBE_REG_THERMO_K_CONV_RES, &temperature_k );
    log_printf( &logger, " Thermo K:    %.2f C\r\n", temperature_k );

    log_printf( &logger, "------------------------\r\n" );
    Delay_ms( 1500 );
}

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.TempProbe

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.

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