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mikroSDK Library

Heater click

Rating:

5

Author: MIKROE

Last Updated: 2020-02-19

Package Version: 1.0.0.0

mikroSDK Library: 1.0.0.0

Category: Temperature & humidity

Downloaded: 2331 times

Not followed.

License: MIT license  

Heater Click is designed with intention of PCB heater concept testing and useful tool for heating complete casing where staying in specified temperature range is crucial. Exact PCB temperature can be set and controlled using TMP235 on board temperature sensor from Texas Instruments.

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  • mikroSDK Library 2.0.0.0
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mikroSDK Library Blog

Heater click

Heater click

Native view of the Heater click board.

View full image
Heater click

Heater click

Front and back view of the Heater click board.

View full image

Library Description

Library provides control over led pins and function for reading raw ADC data as well a fucntion for reading converted data in temperature.

Key functions:

  • uint16_t heater_read_data ( void ); - Function for reading raw ADC data
  • float heater_read_temp ( void ); - Function that raw data converts in temperature

Examples description

The application is composed of three sections :

  • System Initialization - Initialization of I2C, UART modules and GPIO pins
  • Application Initialization - Initialization of PWM module and start heating up
  • Application Task - Durning the task device is heating up to 50 degree C and then cooling down to 40 degree C
void application_task ( )
{
    temp_read = heater_read_temp(  );
    
    if ( ( temp_read > HOT_TEMP ) && ( status_dev == HEATER_WAITING ) )
    {
        status_dev = HEATER_COOLING;
    }
    else if ( ( temp_read < COOL_TEMP ) && ( status_dev == HEATER_WAITING ) )
    {
        status_dev = HEATER_HEATING;
    }

    if ( status_dev == HEATER_HEATING )
    {
        heater_pwm_start(  );
        heater_set_led1_status( HEATER_LED_ON );
        heater_set_led2_status( HEATER_LED_OFF );
        status_dev = HEATER_WAITING;
    }
    else if ( status_dev == HEATER_COOLING )
    {
        heater_pwm_stop(  );
        heater_set_led1_status( HEATER_LED_OFF );
        heater_set_led2_status( HEATER_LED_ON );
        status_dev = HEATER_WAITING;
    }

    FloatToStr( temp_read, demo_txt );
    mikrobus_logWrite( " - Temperature: ", _LOG_TEXT );
    mikrobus_logWrite( demo_txt, _LOG_TEXT );
    mikrobus_logWrite( log_degree, _LOG_LINE );
    mikrobus_logWrite( "***************", _LOG_LINE );

    Delay_ms( 1000 );
}


Note:

  • Device turns red led on when heating up device and blue when cooling down
  • For this example you should supply device with additional 7V

The full application code, and ready to use projects can be found on our LibStock page.

Other mikroE Libraries used in the example:

  • I2C
  • PWM
  • UART
  • Conversion

Additional notes and informations

Depending on the development board you are using, you may need USB UART clickUSB 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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