iqrf

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iqRF Click

IQRF Click carries the RF transceiver, operating in the 868/916 MHz frequency.

Click Product page

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Click library

• Author : Mihajlo Djordjevic
• Date : Dec 2019.
• Type : UART type

Software Support

We provide a library for the iqRF 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 form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for iqRF Click driver.

Standard key functions :

• Config Object Initialization function.

void iqrf_cfg_setup ( iqrf_cfg_t *cfg );

• Initialization function.

IQRF_RETVAL iqrf_init ( iqrf_t *ctx, iqrf_cfg_t *cfg );

• Click Default Configuration function.

void iqrf_default_cfg ( iqrf_t *ctx );

Example key functions :

• This function read one byte data.

iqrf_data_t iqrf_generic_single_read ( iqrf_t *ctx );

• This function writes data.

void iqrf_generic_multi_write ( iqrf_t *ctx, iqrf_data_t *data_buf, uart_length_t len );

Examples Description

RF transceiver - in first case reads one byte from RX buffer. In the second case writes message data via UART.

The demo application is composed of two sections :

Application Init

Application Init performs Logger and Click initialization.

void application_init ( void )
{
    log_cfg_t log_cfg;
    iqrf_cfg_t cfg;

    /** 
     * 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_printf( &logger, "------------------------------------\r\n" );
    log_printf( &logger, "--------  Application  Init --------\r\n" );
    Delay_ms ( 1000 );

    //  Click initialization.

    iqrf_cfg_setup( &cfg );
    IQRF_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    iqrf_init( &iqrf, &cfg );
    
    log_printf( &logger, "------------------------------------\r\n" );
    log_printf( &logger, "------------ iqRF  Click -----------\r\n" );
    log_printf( &logger, "------------------------------------\r\n" );
    Delay_ms ( 1000 );
    
    iqrf_default_cfg ( &iqrf );
    Delay_ms ( 1000 );
    
    log_printf( &logger, "---------- Initialization ----------\r\n" );
    log_printf( &logger, "------------------------------------\r\n" );
    Delay_ms ( 1000 );
}
  

Application Task

Checks if new data byte has received in RX buffer ( ready for reading ), and if ready than reads one byte from RX buffer. In the second case, the application task writes message data via UART. Results are being sent to the Usart Terminal where you can track their changes.

void application_task ( void )
{
    iqrf_data_t tmp;
    
#ifdef DEMO_APP_RECEIVER

    // RECEIVER - UART polling

    tmp =  iqrf_generic_single_read( &iqrf );
    log_printf( &logger, " %c ", tmp );
        
#endif
        
#ifdef DEMO_APP_TRANSCEIVER

    // TRANSMITER - TX each 2 sec
        
    uint8_t cnt;
        
    for ( cnt = 0; cnt < 9; cnt ++ )
    {
        iqrf_generic_single_write( &iqrf, demo_message[ cnt ] );
        Delay_ms ( 100 );
    }
    
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
       
#endif
}

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.iqRF

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. 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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