rs4853v3

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RS485 3V3 Click

RS485 3V3 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 : Stefan Ilic
• Date : Jun 2021.
• Type : UART type

Software Support

Example Description

This example reads and processes data from RS485 3V3 Clicks.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.RS4853V3

Example Key Functions

• rs4853v3_cfg_setup Config Object Initialization function.

void rs4853v3_cfg_setup ( rs4853v3_cfg_t *cfg );

• rs4853v3_init Initialization function.

err_t rs4853v3_init ( rs4853v3_t *ctx, rs4853v3_cfg_t *cfg );

• rs4853v3_generic_read This function reads a desired number of data bytes by using UART serial interface.

err_t rs4853v3_generic_read ( rs4853v3_t *ctx, char *data_buf, uint16_t max_len );

• rs4853v3_send_command This function sends a command by using UART serial interface.

void rs4853v3_send_command ( rs4853v3_t *ctx, char *command );

Application Init

Initializes driver and wake-up module.

void application_init ( void ) 
{
    log_cfg_t log_cfg;
    rs4853v3_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 );

    //  Click initialization.

    rs4853v3_cfg_setup( &cfg );
    RS4853V3_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    rs4853v3_init( &rs4853v3, &cfg );
    log_info( &logger, " Application Task " );
    Delay_ms ( 100 );
    
#ifdef DEMO_APP_TRANSMITTER
    log_printf( &logger, "------------------\r\n" );
    log_printf( &logger, "    Send data:    \r\n" );
    log_printf( &logger, "      MikroE      \r\n" );
    log_printf( &logger, "------------------\r\n" );
    log_printf( &logger, "  Transmit data   \r\n" );
    Delay_ms ( 1000 );

#endif
    
#ifdef DEMO_APP_RECEIVER 
    log_printf( &logger, "------------------\r\n" );

    log_printf( &logger, "   Receive data  \r\n" );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
#endif
        
    log_printf( &logger, "------------------\r\n" );
}

Application Task

Reads the received data and parses it.

void application_task ( void ) 
{  
#ifdef DEMO_APP_RECEIVER 
    rs4853v3_process( );
    if ( current_rsp_buf > 0 ) {
        log_printf( &logger, "%s", current_rsp_buf );
        rs4853v3_clear_current_rsp_buf( );
    }
#endif 

#ifdef DEMO_APP_TRANSMITTER
    rs4853v3_send_command( &rs4853v3, &demo_message[ 0 ] );
    log_printf( &logger, "\t%s",  &demo_message[ 0 ] );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    log_printf( &logger, "------------------\r\n" ); 
#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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