UWB 4 Click

UWB 4 Click is a compact add-on board for precise indoor positioning and location-based applications. This board features the Sera NX040 (453-00174C) from Ezurio, featuring NXP's SR040 chipset for ultra-wideband (UWB) and Nordic Semiconductor's nRF52833 for Bluetooth LE. The module supports IEEE 802.15.4/4z HPR UWB operations, providing exceptional ranging accuracy of less than ±10 cm with a typical receiver sensitivity of -92 dBm.

Click Product page

Click library

• Author : Stefan Filipovic
• Date : Jul 2024.
• Type : UART type

Software Support

We provide a library for the UWB 4 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 4 Click driver.

Standard key functions :

• uwb4_cfg_setup Config Object Initialization function.

  void uwb4_cfg_setup ( uwb4_cfg_t *cfg );

• uwb4_init Initialization function.

  err_t uwb4_init ( uwb4_t *ctx, uwb4_cfg_t *cfg );

Example key functions :

• uwb4_cmd_run This function sends a specified command to the Click module.

  void uwb4_cmd_run ( uwb4_t *ctx, uint8_t *cmd );

• uwb4_cmd_set This function sets a value to a specified command of the Click module.

  void uwb4_cmd_set ( uwb4_t *ctx, uint8_t *cmd, uint8_t *value );

• uwb4_reset_device This function resets the device by toggling the reset pin logic state.

  void uwb4_reset_device ( uwb4_t *ctx );

Example Description

This example demonstrates the use of UWB 4 Click board by showing the UWB ranging between two Click boards configured as initiator and responder.

The demo application is composed of two sections :

Application Init

Initializes the driver and logger.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    uwb4_cfg_t uwb4_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_info( &logger, " Application Init " );

    // Click initialization.
    uwb4_cfg_setup( &uwb4_cfg );
    UWB4_MAP_MIKROBUS( uwb4_cfg, MIKROBUS_1 );
    if ( UART_ERROR == uwb4_init( &uwb4, &uwb4_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    log_info( &logger, " Application Task " );

    app_state = UWB4_POWER_UP;
    log_printf( &logger, ">>> APP STATE - POWER UP <<<\r\n\n" );
}

Application Task

Application task is split in few stages:

• UWB4_POWER_UP: Powers up the device and reads system information.
• UWB4_CONFIG_EXAMPLE: Configures device for UWB ranging.
• UWB4_EXAMPLE: Reads and parses the UWB ranging information.

void application_task ( void )
{
    switch ( app_state )
    {
        case UWB4_POWER_UP:
        {
            if ( UWB4_OK == uwb4_power_up( &uwb4 ) )
            {
                app_state = UWB4_CONFIG_EXAMPLE;
                log_printf( &logger, ">>> APP STATE - CONFIG EXAMPLE <<<\r\n\n" );
            }
            break;
        }
        case UWB4_CONFIG_EXAMPLE:
        {
            if ( UWB4_OK == uwb4_config_example( &uwb4 ) )
            {
                app_state = UWB4_EXAMPLE;
                log_printf( &logger, ">>> APP STATE - EXAMPLE <<<\r\n\n" );
            }
            break;
        }
        case UWB4_EXAMPLE:
        {
            uwb4_example( &uwb4 );
            break;
        }
        default:
        {
            log_error( &logger, " APP STATE." );
            break;
        }
    }
}

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.UWB4

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.