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Ensure a stable, long-range connection that meets your specific needs with CC1120 and PIC18F46K80

Sub-Gigahertz innovation for your next project!

ccRF3 Click with EasyPIC v7

Published Nov 01, 2023

Click board™

ccRF3 Click

Development board

EasyPIC v7

Compiler

NECTO Studio

MCU

PIC18F46K80

Our solution seamlessly integrates sub-gigahertz wireless communication, enhancing your project's connectivity and ensuring data flows smoothly across all devices.

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Hardware Overview

How does it work?

ccRF3 Click is based on the CC1120, a high-performance RF transceiver for narrowband systems from Texas Instruments. At the center of the CC1120, there is a fully integrated fractional-N ultra-high-performance frequency synthesizer, which brings excellent phase noise performance, providing very high selectivity and blocking performance. This flexible receiver is amplified by a low noise amplifier (LNA) and converted in quadrature (I/Q) to the intermediate frequency (IF), after which high dynamic range ADCs digitize the signals. The transmitter is based on direct synthesis of the RF frequency, so to use the spectrum effectively, the CC1120 has extensive data filtering and shaping in TX mode to support high throughput data communication in narrowband channels. The CC1120 also brings down other techniques like eWOR, sniff mode, antenna diversity, WaveMatch, and more. Antenna diversity can increase performance if enabled in a multipath environment, while the CC1120

automatically controls the required onboard antenna switch. The AGC module of the CC1120 returns an estimate of the signal strength (RSSI) received by the antenna. In addition, there is also an integrated temperature sensor for FS calibration. The transmission is done by one of the supported modulations (2-FSK, 2-GFSK, 4-FSK, MSK, and OOK). Besides the support for retransmissions and automatic acknowledgment of received packages, the CC1120 also has TCXO, power modes, built-in coding gain support for increased range and robustness, and many more. The CC1120 uses an SPI serial interface to communicate with the host MCU. In addition, this Click board™ features an RST pin for resetting the CC1120 and a few user-configurable pins labeled GP0, GP2, and GP3 that can be used for monitoring different signals or setting modes. The Clear Channel Assessment (CCA) indicates if the current channel is free or busy with two flags available on GP2 and GP0 while the current CCA

state is viewable on GP3. In synchronous serial operation mode, GP0 is explicitly used for serial data input for TX operation. The ccRF 2 Click uses u.Fl connector for adding the appropriate u.Fl Sub-GHz antenna, offered by Mikroe, and it shouldn’t be powered up without one according to the used frequency. Also, this Click board™ features a 433MHz impedance-matched, multi-function, integrated ceramic passive component switch for the Texas Instruments CC1120 chipset. The CC1120 can be configured using the SmartRF™ Studio software. SmartRF™ Studio is highly recommended for obtaining optimum register settings and evaluating performance and functionality. This Click board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. Also, it comes equipped with a library containing functions and an example code that can be used as a reference for further development.

ccRF3 Click top side image
ccRF3 Click bottom side image

Features overview

Development board

EasyPIC v7 is the seventh generation of PIC development boards specially designed to develop embedded applications rapidly. It supports a wide range of 8-bit PIC microcontrollers from Microchip and has a broad set of unique functions, such as a powerful onboard mikroProg programmer and In-Circuit debugger over USB-B. The development board is well organized and designed so that the end-user has all the necessary elements in one place, such as switches, buttons, indicators, connectors, and others. With four different connectors for each port, EasyPIC v7 allows you to connect accessory boards, sensors, and custom electronics more efficiently than ever. Each part of

the EasyPIC v7 development board contains the components necessary for the most efficient operation of the same board. An integrated mikroProg, a fast USB 2.0 programmer with mikroICD hardware In-Circuit Debugger, offers many valuable programming/debugging options and seamless integration with the Mikroe software environment. Besides it also includes a clean and regulated power supply block for the development board. It can use various external power sources, including an external 12V power supply, 7-23V AC or 9-32V DC via DC connector/screw terminals, and a power source via the USB Type-B (USB-B) connector. Communication options such as

USB-UART and RS-232 are also included, alongside the well-established mikroBUS™ standard, three display options (7-segment, graphical, and character-based LCD), and several different DIP sockets. These sockets cover a wide range of 8-bit PIC MCUs, from PIC10F, PIC12F, PIC16F, PIC16Enh, PIC18F, PIC18FJ, and PIC18FK families. EasyPIC v7 is an integral part of the Mikroe ecosystem for rapid development. Natively supported by Mikroe software tools, it covers many aspects of prototyping and development thanks to a considerable number of different Click boards™ (over a thousand boards), the number of which is growing every day.

EasyPIC v7 horizontal image

Microcontroller Overview

MCU Card / MCU

default

Architecture

PIC

MCU Memory (KB)

64

Silicon Vendor

Microchip

Pin count

40

RAM (Bytes)

3648

You complete me!

Accessories

IPEX-SMA cable is a type of RF (radio frequency) cable assembly. "IPEX" refers to the IPEX connector, a miniature coaxial connector commonly used in small electronic devices. "SMA" stands for SubMiniature Version A and is another coaxial connector commonly used in RF applications. An IPEX-SMA cable assembly has an IPEX connector on one end and an SMA connector on the other, allowing it to connect devices or components that use these specific connectors. These cables are often used in applications like WiFi or cellular antennas, GPS modules, and other RF communication systems where a reliable and low-loss connection is required.

ccRF3 Click accessories 2 image

Right angle 433MHz rubber antenna boasts a frequency range of 433MHz, ensuring optimal performance within this spectrum. With a 50Ohm impedance, it facilitates efficient signal transmission. The antenna's vertical polarization enhances signal reception in a specific orientation. Featuring a 1.5dB gain, it can improve signal strength to some extent. The antenna can handle a maximum input power of 50W, making it suitable for various applications. Its compact 50mm length minimizes spatial requirements. Equipped with an SMA male connector, it easily interfaces with compatible devices. This antenna is an adaptable solution for wireless communication needs, particularly when vertical polarization is crucial.

ccRF3 Click accessories image

Used MCU Pins

mikroBUS™ mapper

General-Purpose I/O
RA2
AN
Reset
RE1
RST
SPI Chip Select
RE0
CS
SPI Clock
RC3
SCK
SPI Data OUT
RC4
MISO
SPI Data IN
RC5
MOSI
Power Supply
3.3V
3.3V
Ground
GND
GND
General-Purpose I/O
RC0
PWM
General-Purpose I/O
RB0
INT
NC
NC
TX
NC
NC
RX
NC
NC
SCL
NC
NC
SDA
NC
NC
5V
Ground
GND
GND
1

Take a closer look

Schematic

ccRF3 Click Schematic schematic

Step by step

Project assembly

EasyPIC v7 front image hardware assembly

Start by selecting your development board and Click board™. Begin with the EasyPIC v7 as your development board.

EasyPIC v7 front image hardware assembly
GNSS2 Click front image hardware assembly
MCU DIP 40 hardware assembly
GNSS2 Click complete accessories setup image hardware assembly
EasyPIC v7 Access MB 1 - upright/background hardware assembly
Necto image step 2 hardware assembly
Necto image step 3 hardware assembly
Necto image step 4 hardware assembly
NECTO Compiler Selection Step Image hardware assembly
NECTO Output Selection Step Image hardware assembly
Necto image step 6 hardware assembly
Necto DIP image step 7 hardware assembly
EasyPIC PRO v7a Display Selection Necto Step hardware assembly
Necto image step 9 hardware assembly
Necto image step 10 hardware assembly
Necto PreFlash Image hardware assembly

Track your results in real time

Application Output

After pressing the "FLASH" button on the left-side panel, it is necessary to open the UART terminal to display the achieved results. By clicking on the Tools icon in the right-hand panel, multiple different functions are displayed, among which is the UART Terminal. Click on the offered "UART Terminal" icon.

UART Application Output Step 1

Once the UART terminal is opened, the window takes on a new form. At the top of the tab are two buttons, one for adjusting the parameters of the UART terminal and the other for connecting the UART terminal. The tab's lower part is reserved for displaying the achieved results. Before connecting, the terminal has a Disconnected status, indicating that the terminal is not yet active. Before connecting, it is necessary to check the set parameters of the UART terminal. Click on the "OPTIONS" button.

UART Application Output Step 2

In the newly opened UART Terminal Options field, we check if the terminal settings are correct, such as the set port and the Baud rate of UART communication. If the data is not displayed properly, it is possible that the Baud rate value is not set correctly and needs to be adjusted to 115200. If all the parameters are set correctly, click on "CONFIGURE".

UART Application Output Step 3

The next step is to click on the "CONNECT" button, after which the terminal status changes from Disconnected to Connected in green, and the data is displayed in the Received data field.

UART Application Output Step 4

Software Support

Library Description

This library contains API for ccRF3 Click driver.

Key functions:

  • ccrf3_cmd_strobe - Set command strobe function.

  • ccrf3_send_tx_data - Send TX data function.

  • ccrf3_receive_rx_data - Receive RX data function.

Open Source

Code example

This example can be found in NECTO Studio. Feel free to download the code, or you can copy the code below.

/*!
 * @file main.c
 * @brief ccRF3 Click example
 *
 * # Description
 * This example demonstrates the use of ccRF 3 click board.
 *
 * The demo application is composed of two sections :
 *
 * ## Application Init
 * Initializes the driver, performs the default configuration and enables the selected mode.
 *
 * ## Application Task
 * Depending on the selected mode, it reads the received data or sends the desired message
 * every 2 seconds. All data is being logged on the USB UART where you can track their changes.
 *
 * @author Stefan Ilic
 *
 */

#include "board.h"
#include "log.h"
#include "ccrf3.h"

#define TEXT_TO_SEND "MikroE\r\n"

static ccrf3_t ccrf3;
static log_t logger;
static uint8_t rx_buffer[ 255 ];

#define DEMO_APP_TRANSMITTER

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    ccrf3_cfg_t ccrf3_cfg;  /**< Click config object. */

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_printf( &logger, " Application Init \r\n" );

    // Click initialization.
    ccrf3_cfg_setup( &ccrf3_cfg );
    CCRF3_MAP_MIKROBUS( ccrf3_cfg, MIKROBUS_1 );
    if ( SPI_MASTER_ERROR == ccrf3_init( &ccrf3, &ccrf3_cfg ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    log_printf( &logger, "----------------------\r\n" );
    log_printf( &logger, " Hardware reset\r\n" );
    ccrf3_hw_reset( &ccrf3 );
    Delay_ms( 1000 );
    
    if ( CCRF3_ERROR == ccrf3_default_cfg ( &ccrf3 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
    
    log_printf( &logger, "----------------------\r\n" );
#ifdef DEMO_APP_TRANSMITTER
    ccrf3_set_tx_mode( &ccrf3 );
    
    log_printf( &logger, " Transmitter mode\r\n" );
#else
    ccrf3_set_rx_mode( &ccrf3 );
    
    log_printf( &logger, " Receiver mode\r\n" );
#endif

    log_printf( &logger, "----------------------\r\n" );
    Delay_ms( 100 );
    
    log_printf( &logger, " Application Task \r\n" );
    log_printf( &logger, "----------------------\r\n" );
}

void application_task ( void )
{
#ifdef DEMO_APP_TRANSMITTER
    ccrf3_send_tx_data( &ccrf3, TEXT_TO_SEND, strlen( TEXT_TO_SEND ) );
    log_printf( &logger, " Sent message: MikroE\r\n" );
    log_printf( &logger, " Packet number: %u\r\n", ccrf3.packet_counter );
    log_printf( &logger, "----------------------\r\n" );
    Delay_ms( 2000 );
#else
    uint8_t num_bytes = ccrf3_receive_rx_data( &ccrf3, &rx_buffer[ 0 ] );
    if ( num_bytes )
    {
        log_printf( &logger, " Received message: " );
        for ( uint8_t cnt = 3; cnt < rx_buffer[ 0 ]; cnt++ )
        {
            log_printf( &logger, "%c", rx_buffer[ cnt ] );
        }
        log_printf( &logger, " Packet number: %u", ccrf3.packet_counter );
        log_printf( &logger, "\r\n----------------------\r\n" );
    }
#endif
}

void main ( void )
{
    application_init( );

    for ( ; ; )
    {
        application_task( );
    }
}

// ------------------------------------------------------------------------ END

Additional Support

Resources