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mikroSDK Library

UWB click

Rating:

5

Author: MIKROE

Last Updated: 2020-08-06

Package Version: 1.0.0.0

mikroSDK Library: 1.0.0.0

Category: Wireless connectivity

Downloaded: 3507 times

Not followed.

License: MIT license  

UWB Click is an Ultra-Wideband transceiver Click board that can be used in 2-way ranging or TDOA location systems to locate assets to a precision of 10 cm and supports data rates of up to 6.8 Mbps. This board features the DWM1000 module based on Decawave's DW1000 Ultra-Wideband (UWB) transceiver from Decawave Limited.

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  • mikroSDK Library 2.0.0.0
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mikroSDK Library Blog

UWB Click

UWB Click

Native view of the UWB Click board.

View full image
UWB Click

UWB Click

Front and back view of the UWB Click board.

View full image

Library Description

Library provides complete control of device. You have communication functions for controlling device, writing, reading functions, controlling pins state. There are functions for configurating every aspect of communication, after you set every mode, channel, frequency... With function uwb_tune_config library will set some additional setting relative to previous set configuration. You can set and check communication stage with eather interrupt mask or status register. For communication you have few function like uwb_get_transmit( gets received data ), uwb_get_transmit_len( gets received data length ), uwb_set_transmit( set data to trasnimt ), and uwb_start_transceiver( starts receiving or transmiting data relative to mode set by configuration ).

Key functions:

  • void uwb_generic_write ( uint8_t reg_adr, uint16_t offset, uint8_t *tx_buf, uint16_t buf_len ) - Writing data to device
  • void uwb_generic_read ( uint8_t reg_adr, uint16_t offset, uint8_t *rx_buf, uint16_t buf_len ) - Reading data from device
  • void uwb_set_mode ( uint8_t mode ) - Setting device in one working mode
  • void uwb_get_transmit ( uint8_t *rx_buf, uint16_t len_buf ) - Get received data
  • void uwb_set_transmit ( uint8_t *tx_buf, uint16_t len_buf ) - Set data to transmit
  • void uwb_start_transceiver ( void ) - Start receiving or transmitig data

Examples description

The application is composed of three sections :

  • System Initialization - Initialization of SPI module and additional pins
  • Application Initialization - Mapping GPIO and SPI module, setting device working mode setting device ID and default configuration for selected mode.
  • Application Task - Checks if interrupt occured for previous set mode. * TX mode: Transmit data and then set delay for 2 seconds. * RX mode: Receive data and logs it.
void application_task ( )
{
    dev_status = uwb_get_qint_pin_status(  );

    if ( UWB_MODE_RX == dev_mode )
    {
        if ( dev_status )
        {
            //Reading transtimed data logs it and reseting to receive mode
            uwb_set_mode( UWB_MODE_IDLE );
            uwb_clear_status(  );
            temp_len = uwb_get_transmit_len(  );
            uwb_get_transmit( &transmit_data[ 0 ], temp_len );
            mikrobus_logWrite( "Received data:", _LOG_TEXT );
            mikrobus_logWrite( transmit_data, _LOG_LINE );
            mikrobus_logWrite( " - Receive done - ", _LOG_LINE );
            uwb_set_mode( UWB_MODE_RX );
            uwb_start_transceiver(  );
        }
    }
    else if ( UWB_MODE_TX == dev_mode )
    {
        if ( dev_status )
        {
            //Transmits data reseting to transmit mode and setts 2sec delay
            mikrobus_logWrite( " - Transmit done - ", _LOG_LINE );
            uwb_set_mode( UWB_MODE_IDLE );
            uwb_clear_status(  );
            uwb_set_transmit( &data_tx[ 0 ], 6 );
            uwb_set_mode( UWB_MODE_TX );
            uwb_start_transceiver(  );
            Delay_ms( 2000 );
        }
    }
}

Other mikroE Libraries used in the example:

  • SPI
  • UART
  • Conversions

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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