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mikroSDK Library

ccRF 3 click

Rating:

7

Author: MIKROE

Last Updated: 2019-07-31

Package Version: 1.0.0.1

mikroSDK Library: 1.0.0.0

Category: 2.4 GHz Transceivers

Downloaded: 4941 times

Not followed.

License: MIT license  

ccRF 3 click carries the CC1120 high-performance RF transceiver for narrowband systems from Texas Instruments. The clicks will enable you to add a low-power consumption radio transceiver at 433 MHz frequency. ccRF 3 click is designed to run on a 3.3V power supply. It communicates with the target microcontroller over SPI interface.

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  • mikroSDK Library 2.0.0.0
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mikroSDK Library Blog

ccRF 3 click

ccRF 3 click

Front and back view of the ccRF 3 click board.

View full image

Library Description

The library covers all the necessary functions to control ccRF 3 Click board. A library performs the communication with the device via SPI interface with CC1120 single-chip radio transceiver.

Key functions:

  • uint8_t ccrf3_readByteReg( uint16_t regAddress ) - Read the byte of data function.
  • void ccrf3_writeBytesReg( uint16_t regAddress, uint8_t *writeData, uint8_t nBytes ) - Sequential write data function.
  • uint8_t ccrf3_writeTXfifo( uint8_t *writeData, uint8_t nBytes ) - Write TX FIFO register function.

Examples description

The application is composed of the three sections :

  • System Initialization - Initializes SPI and LOG structures sets AN, INT and PWM pin as input and CS and RST pins as output and start to write log.
  • Application Initialization - Initialization driver enables - SPI, hardware reset chip, sets default configuration, sets manual calibration, sets operation mode, also write log.
  • Application Task - This is an example which demonstrates the use of ccRF 3 click board. If RX mode selected, checks if new data byte has received in RX buffer ( ready for reading ), and if ready than reads one byte from RX buffer. In the second case, the application task writes received message data via UART. Results are being sent to the Usart Terminal where you can track their changes.
  • Commands : â€‹'T' - TX mode; 'R' - RX mode; 'I' - Idle mode;
void applicationTask()
{
    char receivedData;
    
    if ( UART_Rdy_Ptr() )
    {
        receivedData = UART_Rd_Ptr();

        switch ( receivedData )
        {
            case 'T' :
            {
                modeSelected = _CCRF3_TX_MODE;
                sendFlag = 0;
                readingFlag = 0;
                Delay_ms( 200 );
                ccrf3_setTXmode();

                mikrobus_logWrite( "       TX  Mode       ", _LOG_LINE );
                mikrobus_logWrite( "----------------------", _LOG_LINE );
                break;
            }
            case 'R' :
            {
                modeSelected = _CCRF3_RX_MODE;
                receiveFlag = 0;
                ccrf3_setRXmode();
                readingFlag = 1;

                mikrobus_logWrite( "       RX  Mode       ", _LOG_LINE );
                mikrobus_logWrite( "----------------------", _LOG_LINE );
                break;
            }
            case 'I' :
            {
                modeSelected = _CCRF3_IDLE_MODE;

                mikrobus_logWrite( "      Idle  Mode      ", _LOG_LINE );
                mikrobus_logWrite( "----------------------", _LOG_LINE );
                break;
            }
        }
    }

    switch( modeSelected )
    {
        case _CCRF3_TX_MODE:
        {
            ccrf3_sendTXdata( &txBuffer[ 0 ], 8 );
            Delay_ms( 1000 );
            break;
        }
        case _CCRF3_RX_MODE:
        {
            if ( readingFlag )
            {
                ccrf3_receiveRXdata( &rxBuffer[ 0 ] );
                lengthRx = sizeof( rxBuffer );
    
                for ( cnt = 0; cnt < lengthRx; cnt++ )
                {
                    mikrobus_logWrite( " rxBuffer[ ", _LOG_TEXT );
                    ByteToStr( cnt, logText );
                    ltrim( logText );
                    rtrim( logText );
                    mikrobus_logWrite( logText, _LOG_TEXT );
                    mikrobus_logWrite( " ] = ", _LOG_TEXT );
                    ByteToStr( rxBuffer[ cnt ], logText );
                    ltrim( logText );
                    mikrobus_logWrite( logText, _LOG_LINE );
                }

                Delay_ms( 1000 );
                mikrobus_logWrite( "----------------------", _LOG_LINE );
            }
            break;
        }
    }
}

Other mikroE Libraries used in the example:

  • SPI
  • UART
  • Conversion

Additional notes and informations

Depending on the development board you are using, you may need USB UART clickUSB 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.

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