rs485isolator3  2.1.0.0
Main Page

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.

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 :

Example key functions :

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;
rs485isolator3_cfg_t rs485isolator3_cfg;
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_disable_output( &rs485isolator3 );
log_info( &logger, "---- Receiver mode ----" );
#endif
#ifdef DEMO_APP_TRANSMITTER
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( 2000 );
#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.


rs485isolator3_cfg_t
RS485 Isolator 3 Click configuration object.
Definition: rs485isolator3.h:124
RS485ISOLATOR3_MAP_MIKROBUS
#define RS485ISOLATOR3_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: rs485isolator3.h:89
data_buf
uint8_t data_buf[8]
Definition: main.c:36
rs485isolator3_default_cfg
void rs485isolator3_default_cfg(rs485isolator3_t *ctx)
RS485 Isolator 3 default configuration function.
application_task
void application_task(void)
Definition: main.c:92
rs485isolator3_init
err_t rs485isolator3_init(rs485isolator3_t *ctx, rs485isolator3_cfg_t *cfg)
RS485 Isolator 3 initialization function.
rs485isolator3_cfg_setup
void rs485isolator3_cfg_setup(rs485isolator3_cfg_t *cfg)
RS485 Isolator 3 configuration object setup function.
rs485isolator3_disable_output
void rs485isolator3_disable_output(rs485isolator3_t *ctx)
RS485 Isolator 3 disable output function.
rs485isolator3_disable_receiver_input
void rs485isolator3_disable_receiver_input(rs485isolator3_t *ctx)
RS485 Isolator 3 disable receiver input function.
application_init
void application_init(void)
Definition: main.c:48
rs485isolator3_generic_write
err_t rs485isolator3_generic_write(rs485isolator3_t *ctx, char *data_in, uint16_t len)
RS485 Isolator 3 data writing function.
rs485isolator3_enable_receiver_input
void rs485isolator3_enable_receiver_input(rs485isolator3_t *ctx)
RS485 Isolator 3 enable receiver input function.
rs485isolator3_enable_output
void rs485isolator3_enable_output(rs485isolator3_t *ctx)
RS485 Isolator 3 enable output function.
rs485isolator3_t
RS485 Isolator 3 Click context object.
Definition: rs485isolator3.h:104