rs4853 2.0.0.0
Main Page

RS 485 3 click

RS485 3 click is an RS422/485 transceiver Click board™, which can be used as an interface between the TTL level UART and the RS422/485 communication bus.

click Product page

Click library

  • Author : MikroE Team
  • Date : Apr 2020.
  • Type : UART GPS/GNSS type

Software Support

We provide a library for the Rs4853 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 Rs4853 Click driver.

Standard key functions :

  • Config Object Initialization function.

    ‍void rs4853_cfg_setup ( rs4853_cfg_t *cfg );

    - Initialization function.

    ‍RS4853_RETVAL rs4853_init ( rs4853_t *ctx, rs4853_cfg_t *cfg );

    Example key functions :

  • Generic write function.

    ‍void rs4853_generic_write ( rs4853_t *ctx, char *data_buf, uint16_t len );

    - Generic read function.

    ‍uint16_t rs4853_generic_read ( rs4853_t *ctx, char *data_buf, uint16_t max_len );

  • Function ofr send command

    ‍void rs4853_send_command ( rs4853_t *ctx, char *command );

    Examples Description

‍This application is used to communicate between two RS485 clicks.

The demo application is composed of two sections :

Application Init

‍Initializes driver.

void application_init ( void )
{
log_cfg_t log_cfg;
rs4853_cfg_t cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, "---- Application Init ----" );
// Click initialization.
rs4853_cfg_setup( &cfg );
RS4853_MAP_MIKROBUS( cfg, MIKROBUS_1 );
rs4853_init( &rs4853, &cfg );
}
RS4853_MAP_MIKROBUS
#define RS4853_MAP_MIKROBUS(cfg, mikrobus)
Definition rs4853.h:66
rs4853_init
RS4853_RETVAL rs4853_init(rs4853_t *ctx, rs4853_cfg_t *cfg)
Initialization function.
rs4853_cfg_setup
void rs4853_cfg_setup(rs4853_cfg_t *cfg)
Config Object Initialization function.
application_init
void application_init(void)
Definition main.c:63
rs4853_cfg_t
Click configuration structure definition.
Definition rs4853.h:112

Application Task

‍Reads the received data.

void application_task ( void )
{
#ifdef DEMO_APP_RECEIVER
rs4853_process( );
#endif
#ifdef DEMO_APP_TRANSMITER
rs4853_send_command( &rs4853, TEXT_TO_SEND );
rs4853_process( );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
#endif
}
application_task
void application_task(void)
Definition main.c:88
TEXT_TO_SEND
#define TEXT_TO_SEND
Definition main.c:32

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.Rs4853

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.