rs485isolator  2.0.0.0
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RS485 Isolator click

RS485 Isolator click is an RS485 communication isolator and carries the ADM2682EBRIZ, a 5 kV rms signal and power isolated RS-485 transceiver.

click Product page


Click library

  • Author : Katarina Perendic
  • Date : nov 2019.
  • Type : UART type

Software Support

We provide a library for the Rs485Isolator 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 Rs485Isolator Click driver.

Standard key functions :

Example key functions :

  • Set driver state

    void rs485isolator_set_driver_mode ( rs485isolator_t *ctx, uint8_t state );

  • Set receiver state

    void rs485isolator_set_receiver_mode ( rs485isolator_t *ctx, uint8_t state );

  • Generic single read function

    rs485isolator_data_t rs485isolator_generic_single_read ( rs485isolator_t *ctx );

Examples Description

This demo example shows RS485 communication using RS485 Isolator click.

The demo application is composed of two sections :

Application Init

Configuring clicks and log objects.

void application_init ( void )
{
log_cfg_t log_cfg;
// Logger initialization.
log_cfg.level = LOG_LEVEL_DEBUG;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
/log_info( &logger, "---- Application Init ----" );
// Click initialization.
RS485ISOLATOR_MAP_MIKROBUS( cfg, MIKROBUS_1 );
rs485isolator_init( &rs485isolator, &cfg );
}

Application Task

Depending on the selected application mode:

  • DEMO_APP_TRANSMITER - Prints "MikroE" message to UART
  • DEMO_APP_RECEIVER - Reads data from uart and prints to LOG (Default)
void application_task ( void )
{
char tmp;
// Task implementation.
#ifdef DEMO_APP_RECEIVER
// RECEIVER - UART polling
tmp = rs485isolator_generic_single_read( &rs485isolator );
log_printf( &logger, "%c", tmp );
#endif
#ifdef DEMO_APP_TRANSMITER
// TRANSMITER - TX each 2 sec
rs485isolator_generic_multi_write( &rs485isolator, demo_message, 9 );
Delay_ms( 2000 );
#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.Rs485Isolator

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.


rs485isolator_generic_multi_write
void rs485isolator_generic_multi_write(rs485isolator_t *ctx, rs485isolator_data_t *data_buf, uart_length_t len)
Generic multi write function.
rs485isolator_init
RS485ISOLATOR_RETVAL rs485isolator_init(rs485isolator_t *ctx, rs485isolator_cfg_t *cfg)
Initialization function.
application_task
void application_task(void)
Definition: main.c:58
rs485isolator_cfg_t
Click configuration structure definition.
Definition: rs485isolator.h:112
RS485ISOLATOR_MAP_MIKROBUS
#define RS485ISOLATOR_MAP_MIKROBUS(cfg, mikrobus)
Definition: rs485isolator.h:51
application_init
void application_init(void)
Definition: main.c:39
rs485isolator_cfg_setup
void rs485isolator_cfg_setup(rs485isolator_cfg_t *cfg)
Config Object Initialization function.
rs485isolator_generic_single_read
rs485isolator_data_t rs485isolator_generic_single_read(rs485isolator_t *ctx)
Generic single read function.