thermok3  2.1.0.0
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Thermo K 3 click

Thermo K 3 Click is a compact add-on board that provides accurate temperature measurements with a thermocouple probe. This board features the MAX6675, a cold-junction-compensated K-thermocouple-to-digital converter from Analog Devices. With the versatile type-K probe, this board enables precise temperature measurements of up to +700°C in 12-bit (0.25°C) resolution. This board can measure temperatures as high as +1024°C but with less precision. It features cold-junction compensation sensing and correction and open thermocouple detection.

click Product page


Click library

  • Author : Stefan Filipovic
  • Date : Apr 2023.
  • Type : SPI type

Software Support

We provide a library for the Thermo K 3 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 K 3 Click driver.

Standard key functions :

Example key functions :

  • thermok3_read_data This function reads a raw data output by using the SPI serial interface.
    err_t thermok3_read_data ( thermok3_t *ctx, uint16_t *data_out );
  • thermok3_read_temperature This function reads a raw data output and converts it to temperature in Celsius.
    err_t thermok3_read_temperature ( thermok3_t *ctx, float *temperature );

Example Description

This example demonstrates the use of Thermo K 3 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;
thermok3_cfg_t thermok3_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
thermok3_cfg_setup( &thermok3_cfg );
THERMOK3_MAP_MIKROBUS( thermok3_cfg, MIKROBUS_1 );
if ( SPI_MASTER_ERROR == thermok3_init( &thermok3, &thermok3_cfg ) )
{
log_error( &logger, " Communication init." );
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.

If there's no thermocouple type-K probe inserted an appropriate message will be displayed instead.

void application_task ( void )
{
float temperature = 0;
err_t error_flag = thermok3_read_temperature ( &thermok3, &temperature );
if ( THERMOK3_OK == error_flag )
{
log_printf( &logger, " Temperature: %.2f C\r\n\n", temperature );
}
else if ( THERMOK3_OPEN_THERMOCOUPLE == error_flag )
{
log_printf( &logger, " NO thermocouple input\r\n\n" );
}
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.ThermoK3

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.


thermok3_cfg_setup
void thermok3_cfg_setup(thermok3_cfg_t *cfg)
Thermo K 3 configuration object setup function.
application_task
void application_task(void)
Definition: main.c:60
THERMOK3_MAP_MIKROBUS
#define THERMOK3_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: thermok3.h:98
THERMOK3_OPEN_THERMOCOUPLE
@ THERMOK3_OPEN_THERMOCOUPLE
Definition: thermok3.h:147
thermok3_read_data
err_t thermok3_read_data(thermok3_t *ctx, uint16_t *data_out)
Thermo K 3 read data function.
thermok3_init
err_t thermok3_init(thermok3_t *ctx, thermok3_cfg_t *cfg)
Thermo K 3 initialization function.
thermok3_t
Thermo K 3 Click context object.
Definition: thermok3.h:112
application_init
void application_init(void)
Definition: main.c:30
thermok3_read_temperature
err_t thermok3_read_temperature(thermok3_t *ctx, float *temperature)
Thermo K 3 read temperature function.
THERMOK3_OK
@ THERMOK3_OK
Definition: thermok3.h:145
thermok3_cfg_t
Thermo K 3 Click configuration object.
Definition: thermok3.h:125