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UWB 2 click

‍UWB 2 Click is a compact add-on board that brings Ultra-Wideband communication to any solution. This board features the DWM3000, an IEEE 802.15-z UWB transceiver module from Qorvo. This module fully aligns with FiRaTM PHY, MAC, and certification development. It uses an integrated UWB antenna to establish wireless communication in UWB channels 5 (6.5GHz) and 9 (8GHz). This Click board™ makes the perfect solution for developing precision real-time location systems (RTLS) using two-way ranging or TDoA schemes in various markets, location-aware wireless sensor networks (WSNs), and more.

click Product page

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Click library

• Author : Stefan Filipovic
• Date : Apr 2023.
• Type : SPI type

Software Support

We provide a library for the UWB 2 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 UWB 2 Click driver.

Standard key functions :

• uwb2_cfg_setup Config Object Initialization function.

  void uwb2_cfg_setup ( uwb2_cfg_t *cfg );

• uwb2_init Initialization function.

  err_t uwb2_init ( uwb2_t *ctx, uwb2_cfg_t *cfg );

• uwb2_default_cfg Click Default Configuration function.

  err_t uwb2_default_cfg ( uwb2_t *ctx );

Example key functions :

• uwb2_read_reg_32bit This function reads 32-bit data from the selected register by using SPI serial interface.

  err_t uwb2_read_reg_32bit ( uwb2_t *ctx, uint16_t reg, uint32_t *data_out );

• uwb2_send_message This function write a desired number of data bytes to the TX buffer, sets the TX message size, starts transmission and waits for a TX frame sent event.

  err_t uwb2_send_message ( uwb2_t *ctx, uint8_t *data_in, uint16_t len );

• uwb2_read_message This function activates the reception and then waits for a frame with a good FCS/CRC then reads up to len number of data bytes from the RX buffer and adjust the len parameter with the number of data bytes actually read.

  err_t uwb2_read_message ( uwb2_t *ctx, uint8_t *data_out, uint16_t *len );

Example Description

‍This example demonstrates the use of an UWB 2 click board by showing the communication between the two click boards.

The demo application is composed of two sections :

Application Init

‍Initializes the driver, performs the click default configuration, then reads and displays the device ID number.

void application_init ( void )
{
    log_cfg_t log_cfg;  
    uwb2_cfg_t uwb2_cfg;  
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );
 
    // Click initialization.
    uwb2_cfg_setup( &uwb2_cfg );
    UWB2_MAP_MIKROBUS( uwb2_cfg, MIKROBUS_1 );
    if ( SPI_MASTER_ERROR == uwb2_init( &uwb2, &uwb2_cfg ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    if ( UWB2_ERROR == uwb2_default_cfg ( &uwb2 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
    
    uint32_t dev_id = 0;
    if ( UWB2_OK == uwb2_read_reg_32bit ( &uwb2, UWB2_REG_DEV_ID, &dev_id ) )
    {
        log_printf ( &logger, " Device ID: 0x%.8LX\r\n", dev_id );
    }
    
#ifdef DEMO_APP_TRANSMITTER
    log_printf( &logger, " Application Mode: Transmitter\r\n" );
#else
    log_printf( &logger, " Application Mode: Receiver\r\n" );
#endif
    
    log_info( &logger, " Application Task " );
}

Application Task

‍Depending on the selected application mode, it reads all the received data or sends the desired text message with the message counter once per second.

void application_task ( void )
{
#ifdef DEMO_APP_TRANSMITTER
    static uint8_t tx_msg_cnt = 0;
    uint8_t tx_buffer[ 128 ] = { 0 };
    uint16_t tx_msg_size = 0;
    tx_buffer[ 0 ] = tx_msg_cnt; // Message number.
    strcpy ( &tx_buffer[ 1 ], DEMO_TEXT_MESSAGE );
    tx_msg_size = strlen ( DEMO_TEXT_MESSAGE ) + 2; // Message size + null-terminated + tx_msg_cnt
    if ( UWB2_OK == uwb2_send_message ( &uwb2, tx_buffer, tx_msg_size ) )
    {
        log_printf ( &logger, " Message sent #%u\r\n\n", tx_buffer[ 0 ] );
        tx_msg_cnt++; // Increment message number (modulo 256).
    }
    Delay_ms ( 1000 );
#else
    uint8_t rx_buffer[ 128 ] = { 0 };
    uint16_t rx_msg_size = sizeof ( rx_buffer );
    if ( UWB2_OK == uwb2_read_message ( &uwb2, rx_buffer, &rx_msg_size ) )
    {
        log_printf ( &logger, " Message received #%u: %s\r\n\n", 
                     ( uint16_t ) rx_buffer[ 0 ], &rx_buffer[ 1 ] );
    }
#endif
}

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.UWB2

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.

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