Temp ISO Click

Temp ISO Click is a compact add-on board for accurate and isolated temperature measurements in high-voltage environments. This board features the ISOTMP35-Q1, an automotive-grade isolated temperature sensor with analog output from Texas Instruments. This sensor integrates a robust isolation barrier with a withstand voltage of up to 3000VRMS, a linear analog output with a 10mV/°C slope, and a wide temperature range of –40°C to 150°C. It delivers high accuracy of ±2.0°C, fast thermal response, and is AEC-Q100 qualified, ensuring long-term reliability in demanding conditions. The board also features Click Snap, enabling flexible sensor placement by detaching the PCB for standalone operation.

Click Product page

Click library

• Author : Stefan Filipovic
• Date : Sep 2024.
• Type : ADC type

Software Support

We provide a library for the Temp ISO 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 Temp ISO Click driver.

Standard key functions :

• tempiso_cfg_setup Config Object Initialization function.

  void tempiso_cfg_setup ( tempiso_cfg_t *cfg );

• tempiso_init Initialization function.

  err_t tempiso_init ( tempiso_t *ctx, tempiso_cfg_t *cfg );

Example key functions :

• tempiso_read_temperature This function reads the voltage level from AN pin and converts it to temperature in degrees Celsius.

  err_t tempiso_read_temperature ( tempiso_t *ctx, float *data_out );

• tempiso_read_voltage_avg This function reads a desired number of ADC samples and calculates the average voltage level.

  err_t tempiso_read_voltage_avg ( tempiso_t *ctx, uint16_t num_conv, float *voltage_avg );

• tempiso_set_vref This function sets the voltage reference for Temp ISO Click driver.

  err_t tempiso_set_vref ( tempiso_t *ctx, float vref );

Example Description

This example demonstrates the use of Temp ISO Click board by reading and displaying the temperature measurements.

The demo application is composed of two sections :

Application Init

Initializes the driver and logger.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    tempiso_cfg_t tempiso_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.
    tempiso_cfg_setup( &tempiso_cfg );
    TEMPISO_MAP_MIKROBUS( tempiso_cfg, MIKROBUS_1 );
    if ( ADC_ERROR == tempiso_init( &tempiso, &tempiso_cfg ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

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

Application Task

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

void application_task ( void )
{
    float temperature = 0;
    if ( TEMPISO_OK == tempiso_read_temperature ( &tempiso, &temperature ) ) 
    {
        log_printf( &logger, " Temperature: %.1f degC\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.TempISO

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.