IR Click

IR Click is an add-on board in mikroBUS form factor. It’s a compact and easy solution for adding infrared (IR) remote control module to your design.

Click Product page

Click library

• Author : Stefan Ilic
• Date : Oct 2021.
• Type : UART type

Software Support

We provide a library for the IR 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 IR Click driver.

Standard key functions :

• ir_cfg_setup Config Object Initialization function.

  void ir_cfg_setup ( ir_cfg_t *cfg );

• ir_init Initialization function.

  err_t ir_init ( ir_t *ctx, ir_cfg_t *cfg );

Example key functions :

• ir_get_an_state IR get AN pin state function.

  uint8_t ir_get_an_state ( ir_t *ctx );

• ir_nec_send_command IR NEC send data function.

  void ir_nec_send_command ( ir_t *ctx, uint8_t address, uint8_t command );

• ir_nec_read_command IR NEC data reading function.

  err_t ir_nec_read_command ( ir_t *ctx, uint8_t *address, uint8_t *command );

Example Description

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

The demo application is composed of two sections :

Application Init

Initialization driver enables - GPIO and Log.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    ir_cfg_t ir_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.
    ir_cfg_setup( &ir_cfg );
    IR_MAP_MIKROBUS( ir_cfg, MIKROBUS_1 );
    err_t error_flag = ir_init( &ir, &ir_cfg );
    if ( ( UART_ERROR == error_flag ) || ( PWM_ERROR == error_flag ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    log_info( &logger, " Application Task " );
    log_printf( &logger, "- - - - - - - - - - - - \r\n" );

    #ifdef IR_TRANSMITTER_MODE
        log_printf( &logger, "-  Transmitter mode   - \r\n" );
    #else
        log_printf( &logger, "-    Receiver mode    - \r\n" );
    #endif
    log_printf( &logger, "- - - - - - - - - - - - \r\n" );
}

Application Task

This example contains two parts :

• Transmitter mode - Sends data using NEC protocol.
• Receiver mode - Reads data that is been sent using NEC protocol and displaying it on the UART terminal.

void application_task ( void ) 
{
    #ifdef IR_TRANSMITTER_MODE
        log_printf( &logger, " Sending message." );

        for ( uint8_t cnt = 0; cnt < 8; cnt++ )
        {
            ir_nec_send_command( &ir, 0x00, tx_data[ cnt ] );
            log_printf( &logger, "." );
            Delay_ms ( 50 );
        }

        log_printf( &logger, "\r\n Message sent! \r\n" );
        log_printf( &logger, "- - - - - - - - - - - - \r\n" );
        Delay_ms ( 500 );
    #else
        uint8_t arr;
        char rx_data;

        err_t err_flag = ir_nec_read_command ( &ir, &arr, &rx_data );

        if ( IR_OK == err_flag )
        {
            log_printf( &logger, "%c", rx_data );
        }
        else
        {
            log_printf( &logger, "Read ERROR! \r\n" );
        }
        Delay_ms ( 50 );
    #endif
}

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.IR

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.