rfmeter3  2.0.0.0
Main Page

RF Meter 3 Click

RF Meter 3 Click is a compact add-on board that collects information, analyzes RF power, and displays information in an easy-to-read digital format. This board features the LT5581, a low-power monolithic precision RMS power detector from Analog Devices. The RMS detector uses a proprietary technique to accurately measure the RF power in a range from 2GHz up to 2.6GHz, well-suited for signals with high crest factors. It outputs a DC voltage in linear scale proportional to an RF input signal power in dBm.

Click Product page


Click library

  • Author : Stefan Filipovic
  • Date : Sep 2021.
  • Type : ADC type

Software Support

We provide a library for the RFMeter3 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 RFMeter3 Click driver.

Standard key functions :

Example key functions :

Example Description

This example demonstrates the use of RF Meter 3 Click board.

The demo application is composed of two sections :

Application Init

Initializes the driver and enables the Click board.

void application_init ( void )
{
log_cfg_t log_cfg;
rfmeter3_cfg_t rfmeter3_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
rfmeter3_cfg_setup( &rfmeter3_cfg );
RFMETER3_MAP_MIKROBUS( rfmeter3_cfg, MIKROBUS_1 );
if ( ADC_ERROR == rfmeter3_init( &rfmeter3, &rfmeter3_cfg ) )
{
log_error( &logger, " Application Init Error. " );
log_info( &logger, " Please, run program again... " );
for ( ; ; );
}
rfmeter3_enable_device ( &rfmeter3 );
log_info( &logger, " Application Task " );
}

Application Task

Measures the RF input signal power in dBm and displays the results on the USB UART every 100ms.

void application_task ( void )
{
float rfmeter3_rf_input_power = 0;
if ( RFMETER3_ERROR != rfmeter3_get_rf_input_power ( &rfmeter3, &rfmeter3_rf_input_power ) )
{
log_printf( &logger, " RF Input Power: %.2f dBm\r\n", rfmeter3_rf_input_power );
Delay_ms ( 100 );
}
}

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.RFMeter3

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.


RFMETER3_MAP_MIKROBUS
#define RFMETER3_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: rfmeter3.h:93
rfmeter3_t
RF Meter 3 Click context object.
Definition: rfmeter3.h:105
RFMETER3_ERROR
@ RFMETER3_ERROR
Definition: rfmeter3.h:133
application_task
void application_task(void)
Definition: main.c:60
rfmeter3_get_rf_input_power
err_t rfmeter3_get_rf_input_power(rfmeter3_t *ctx, float *data_out)
RF Meter 3 get rf input power function.
rfmeter3_enable_device
void rfmeter3_enable_device(rfmeter3_t *ctx)
RF Meter 3 enable device function.
rfmeter3_init
err_t rfmeter3_init(rfmeter3_t *ctx, rfmeter3_cfg_t *cfg)
RF Meter 3 initialization function.
rfmeter3_cfg_setup
void rfmeter3_cfg_setup(rfmeter3_cfg_t *cfg)
RF Meter 3 configuration object setup function.
application_init
void application_init(void)
Definition: main.c:27
rfmeter3_cfg_t
RF Meter 3 Click configuration object.
Definition: rfmeter3.h:117
rfmeter3_disable_device
void rfmeter3_disable_device(rfmeter3_t *ctx)
RF Meter 3 disable device function.