lr9

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LR 9 Click

LR 9 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.

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Click Library

• Author : Nenad Filipovic
• Date : Dec 2023.
• Type : UART type

Software Support

Example Description

This example demonstrates the use of LR 9 Click board by processing the incoming data and displaying them on the USB UART.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.LR9

Example Key Functions

• lr9_cfg_setup Config Object Initialization function.

void lr9_cfg_setup ( lr9_cfg_t *cfg );

• lr9_init Initialization function.

err_t lr9_init ( lr9_t *ctx, lr9_cfg_t *cfg );

• lr9_send_data_frame This function sends the desired data frame by using the UART serial interface.

err_t lr9_send_data_frame ( lr9_t *ctx, uint8_t confirm, uint8_t nbtrials, uint8_t *data_frame );

• lr9_inquire_command Using the UART serial interface, this function writes the desired query command with or without the included equals symbol.

err_t lr9_inquire_command ( lr9_t *ctx, uint8_t *command, lr9_en_set_t en_set );

• lr9_write_command This function writes a desired command and parameter by using the UART serial interface.

err_t lr9_write_command ( lr9_t *ctx, uint8_t *command, uint8_t *param );

Application Init

Initializes the driver and performs a hardware reset of the device.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    lr9_cfg_t lr9_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.
    lr9_cfg_setup( &lr9_cfg );
    LR9_MAP_MIKROBUS( lr9_cfg, MIKROBUS_1 );
    if ( UART_ERROR == lr9_init( &lr9, &lr9_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    lr9_hw_reset( &lr9 );
    Delay_ms ( 500 );

    lr9_inquire_command( &lr9, LR9_CMD_CTXADDRSET, LR9_EQUAL_ENABLE );
    lr9_log_response( );
    Delay_ms ( 500 );

    lr9_inquire_command( &lr9, LR9_CMD_CADDRSET, LR9_EQUAL_ENABLE );
    lr9_log_response( );
    Delay_ms ( 500 );

#ifdef DEMO_APP_TRANSMITTER
    log_printf( &logger, " > Transmitter < \r\n" );
    lr9_write_command( &lr9, LR9_CMD_CTX , LR9_RF_CFG_DEFAULT_TX );
    lr9_log_response( );
    Delay_ms ( 500 );
#else
    log_printf( &logger, " > Receiver < \r\n" );
    lr9_write_command( &lr9, LR9_CMD_CRXS , LR9_RF_CFG_DEFAULT_RX );
    lr9_log_response( );
    Delay_ms ( 500 );
#endif

    lr9_log_response( );
    Delay_ms ( 500 );
}

Application Task

Depending on the selected mode, the application demo receives and processes all incoming data or sends the LoRa packet demo string. Results are being sent to the UART Terminal, where you can track their changes.

void application_task ( void ) 
{
#ifdef DEMO_APP_TRANSMITTER
    lr9_send_data_frame( &lr9, LR9_DTRX_CONFIG_DATA, LR9_NB_TRIALS_2, LR9_DEMO_STRING );
    lr9_log_response( );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
#else
    lr9_log_receiver( );
#endif
}

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.

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