mbusrf3  2.1.0.0
Main Page

M-BUS RF 3 click

M-BUS RF 3 Click is a compact add-on board designed for utility metering and various telemetry applications. This board features the Metis-II (2607021183000), an 868MHz radio module from Würth Elektronik. It integrates an MSP430 microcontroller and a CC1125 RF chip-set to ensure efficient data transmission. Key features include a frequency range of 868.3MHz to 869.525MHz, support for the Wireless M-BUS EN13757-4:2013 and Open Metering System (OMS) standards, and communication capabilities up to 1000 meters in line-of-sight conditions. The board also offers energy-saving functionalities such as Wake-On-Radio, an output power of +14dBm output, and AES-128 encryption for secure communication.

click Product page


Click library

  • Author : Stefan Ilic
  • Date : Jan 2024.
  • Type : UART type

Software Support

We provide a library for the M-BUS RF 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 M-BUS RF 3 Click driver.

Standard key functions :

Example key functions :

  • mbusrf3_set_rst_pin This function is used to set reset pin state.
    void mbusrf3_set_rst_pin ( mbusrf3_t *ctx, uint8_t pin_state );
  • mbusrf3_send_command This function is used to send a desired command.
    err_t mbusrf3_send_command ( mbusrf3_t *ctx, uint8_t cmd, uint8_t *data_in, uint8_t len );
  • mbusrf3_send_data This function is used to data in transmitter mode.
    err_t mbusrf3_send_data ( mbusrf3_t *ctx, uint8_t *data_in, uint8_t len );

Example Description

This example demonstrates the use of M-BUS RF 3 click board by processing

the incoming data and displaying them on the USB UART.

The demo application is composed of two sections :

Application Init

Initializes the driver and performs the click configuration depending on selected DEMO_EXAMPLE macro.

void application_init ( void )
{
log_cfg_t log_cfg;
mbusrf3_cfg_t mbusrf3_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
mbusrf3_cfg_setup( &mbusrf3_cfg );
MBUSRF3_MAP_MIKROBUS( mbusrf3_cfg, MIKROBUS_1 );
if ( UART_ERROR == mbusrf3_init( &mbusrf3, &mbusrf3_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
mbusrf3_process( );
mbusrf3_clear_app_buf( );
Delay_ms ( 500 );
mbusrf3_configure_for_example( );
log_info( &logger, " Application Task " );
}

Application Task

This example contains two examples depending on selected DEMO_EXAMPLE macro: EXAMPLE_TRANSMIT - Device is sending MESSAGE data to be read by receiver. EXAMPLE_RECEIVER - Device is reading transmitted message, and display it on USB UART terminal.

void application_task ( void )
{
mbusrf3_example( );
}

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.MBUSRF3

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.


mbusrf3_init
err_t mbusrf3_init(mbusrf3_t *ctx, mbusrf3_cfg_t *cfg)
M-BUS RF 3 initialization function.
mbusrf3_send_command
err_t mbusrf3_send_command(mbusrf3_t *ctx, uint8_t cmd, uint8_t *data_in, uint8_t len)
M-BUS RF 3 send command function.
mbusrf3_set_rst_pin
void mbusrf3_set_rst_pin(mbusrf3_t *ctx, uint8_t pin_state)
M-BUS RF 3 set reset pin function.
mbusrf3_cfg_setup
void mbusrf3_cfg_setup(mbusrf3_cfg_t *cfg)
M-BUS RF 3 configuration object setup function.
application_task
void application_task(void)
Definition: main.c:154
mbusrf3_t
M-BUS RF 3 Click context object.
Definition: mbusrf3.h:128
MBUSRF3_MAP_MIKROBUS
#define MBUSRF3_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: mbusrf3.h:114
application_init
void application_init(void)
Definition: main.c:118
mbusrf3_cfg_t
M-BUS RF 3 Click configuration object.
Definition: mbusrf3.h:149
mbusrf3_send_data
err_t mbusrf3_send_data(mbusrf3_t *ctx, uint8_t *data_in, uint8_t len)
M-BUS RF 3 send data function.