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IR Grid Click

IR Grid Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.

Click Library

  • Author : MikroE Team
  • Date : maj 2020.
  • Type : I2C type

Software Support

Example Description

IR Grid Click is a thermal imaging sensor. It has an array of 64 very sensitive factory calibrated IR elements (pixels), arranged in 4 rows of 16 pixels, each measuring an object temperature up to 300˚C.

Example Libraries

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.IrGrid

Example Key Functions

  • irgrid_cfg_setup Config Object Initialization function.
void irgrid_cfg_setup ( irgrid_cfg_t *cfg );
  • irgrid_init Initialization function.
err_t irgrid_init ( irgrid_t *ctx, irgrid_cfg_t *cfg );
  • Measures temperature and places it inside internal buffers. This function is
  • irgrid_measure needed to be called prior to irgrid_get_ir_raw or irgrid_get_temperature.
uint8_t irgrid_measure ( irgrid_t *ctx, irgrid_data_t *data_str );
  • irgrid_get_temperature Populates provided buffer with calculated temperatures. Buffer must have at least 64 members.
void irgrid_get_temperature ( irgrid_data_t *data_str, float *buffer );
  • irgrid_read_eeprom Read function using EEPROM slave adress.
void irgrid_read_eeprom ( irgrid_t *ctx, uint8_t reg, uint8_t *data_buf, uint8_t len );

Application Init

Initializes driver init and IR Grid module

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    irgrid_cfg_t irgrid_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.
    irgrid_cfg_setup( &irgrid_cfg );
    IRGRID_MAP_MIKROBUS( irgrid_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == irgrid_init( &irgrid, &irgrid_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    irgrid_device_init( &irgrid, &irgrid_data, 16 );
    
    log_info( &logger, " Application Task " );
}

Application Task

Reads the temperature of all pixels and creates a pixel temperature matrix that logs on usbuart every half of second

void application_task ( void )
{    
    if ( 1 != irgrid_measure( &irgrid, &irgrid_data ) )
    {
        irgrid_get_temperature( &irgrid_data, &ir_tmp[ 0 ] );
    }

    for ( rc = 0; rc < 4; rc++ )
    {
        for ( cc = 0; cc < 16; cc++ )
        {
            i = ( cc * 4 ) + rc;
            log_printf( &logger, "%.3f    ", ir_tmp[ i ] );
        }
        log_printf( &logger, "\r\n" );
        Delay_ms ( 100 );
    }
    
    log_printf( &logger, "\r\n" );
    log_printf( &logger, "\r\n" );
    log_printf( &logger, "\r\n" );
    Delay_ms ( 500 );
}

Application Output

This Click board can be interfaced and monitored in two ways:

  • Application Output - Use the "Application Output" window in Debug mode for real-time data monitoring. Set it up properly by following this tutorial.
  • UART Terminal - Monitor data via the UART Terminal using a USB to UART converter. For detailed instructions, check out this tutorial.

Additional Notes and Information

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.