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mikroSDK Library

RS485 Isolator 3 Click

Rating:

0

Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.10

mikroSDK Library: 2.0.0.0

Category: RS485

Downloaded: 295 times

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License: MIT license  

RS485 Isolator 3 Click is a compact add-on board that provides electrical isolation and signal conditioning for RS485 communication systems. This board features the ADM2763E, a 500kbps, 5.7kV RMS, signal-isolated RS-485 transceiver from Analog Devices.

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mikroSDK Library Blog


RS485 Isolator 3 Click

RS485 Isolator 3 Click is a compact add-on board that provides electrical isolation and signal conditioning for RS485 communication systems. This board features the ADM2763E, a 500kbps, 5.7kV RMS, signal-isolated RS-485 transceiver from Analog Devices.

rs485isolator3_click.png

Click Product page


Click library

  • Author : Stefan Ilic
  • Date : Mar 2023.
  • Type : UART type

Software Support

We provide a library for the RS485 Isolator 3 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 RS485 Isolator 3 Click driver.

Standard key functions :

  • rs485isolator3_cfg_setup Config Object Initialization function.

    void rs485isolator3_cfg_setup ( rs485isolator3_cfg_t *cfg );
  • rs485isolator3_init Initialization function.

    err_t rs485isolator3_init ( rs485isolator3_t *ctx, rs485isolator3_cfg_t *cfg );
  • rs485isolator3_default_cfg Click Default Configuration function.

    void rs485isolator3_default_cfg ( rs485isolator3_t *ctx );

Example key functions :

  • rs485isolator3_enable_receiver_input RS485 Isolator 3 enable receiver input function.

    void rs485isolator3_enable_receiver_input ( rs485isolator3_t *ctx );
  • rs485isolator3_disable_receiver_input RS485 Isolator 3 disable receiver input function.

    void rs485isolator3_disable_receiver_input ( rs485isolator3_t *ctx );
  • rs485isolator3_disable_output RS485 Isolator 3 disable output function.

    void rs485isolator3_disable_output ( rs485isolator3_t *ctx );

Example Description

This example reads and processes data from RS485 Isolator 3 clicks.

The demo application is composed of two sections :

Application Init

Initializes the driver and enables the selected mode.


void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    rs485isolator3_cfg_t rs485isolator3_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.
    rs485isolator3_cfg_setup( &rs485isolator3_cfg );
    RS485ISOLATOR3_MAP_MIKROBUS( rs485isolator3_cfg, MIKROBUS_1 );
    if ( UART_ERROR == rs485isolator3_init( &rs485isolator3, &rs485isolator3_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    rs485isolator3_default_cfg ( &rs485isolator3 );

#ifdef DEMO_APP_RECEIVER
    rs485isolator3_enable_receiver_input( &rs485isolator3 );
    rs485isolator3_disable_output( &rs485isolator3 );
    log_info( &logger, "---- Receiver mode ----" );
#endif 
#ifdef DEMO_APP_TRANSMITTER
    rs485isolator3_disable_receiver_input( &rs485isolator3 );
    rs485isolator3_enable_output( &rs485isolator3 );    
    log_info( &logger, "---- Transmitter mode ----" );
#endif

    log_info( &logger, " Application Task " );
    Delay_ms ( 100 );
}

Application Task

Depending on the selected mode, it reads all the received data or sends the desired message every 2 seconds.

void application_task ( void ) 
{
#ifdef DEMO_APP_RECEIVER
    rs485isolator3_process( );
#endif    

#ifdef DEMO_APP_TRANSMITTER
    rs485isolator3_generic_write( &rs485isolator3, data_buf, strlen( data_buf ) );
    log_info( &logger, "---- Data sent ----" );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
#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.RS485Isolator3

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.


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