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mikroSDK Library

LightRanger Click

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Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.15

mikroSDK Library: 2.0.0.0

Category: Optical

Downloaded: 356 times

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License: MIT license  

LightRanger Click is a proximity sensor carrying STs VL6180X IC. This chip is based on STs patented FlightSense technology...

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  • mikroSDK Library 1.0.0.0
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mikroSDK Library Blog


LightRanger Click

LightRanger Click is a proximity sensor carrying ST�s VL6180X IC. This chip is based on STs patented FlightSense technology...

lightranger_click.png

Click Product page


Click library

  • Author : MikroE Team
  • Date : Dec 2019.
  • Type : I2C type

Software Support

We provide a library for the LightRanger 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 form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for LightRanger Click driver.

Standard key functions :

  • Config Object Initialization function.

    void lightranger_cfg_setup ( lightranger_cfg_t *cfg );

  • Initialization function.

    LIGHTRANGER_RETVAL lightranger_init ( lightranger_t ctx, lightranger_cfg_t cfg );

Example key functions :

  • This function writes a byte of data to given address.

    void lightranger_write_byte ( lightranger_t* ctx, uint16_t reg_addr, uint8_t write_command );

  • This function reads register and calculates the light level in lux.

    float lightranger_get_ambiant_light ( lightranger_t* ctx, uint16_t als_gain_check );

  • This function reads range result from register.

    uint16_t lightranger_get_distance ( lightranger_t* ctx );

Examples Description

This example collects data from the sensor and logs it to the terminal.

The demo application is composed of two sections :

Application Init

Initialization driver for sensor Vl6180X and stars logging to terminal.


void application_init ( void )
{
    log_cfg_t log_cfg;
    lightranger_cfg_t cfg;

    /** 
     * 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.

    lightranger_cfg_setup( &cfg );
    LIGHTRANGER_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    lightranger_init( &lightranger, &cfg );

    lightranger_default_cfg( &lightranger );
    Delay_ms ( 1000 );
}

Application Task

Measures and calculates ambient light intensity and distance from sensor, when the distance is changed log is updated, results are being sent to the Usart Terminal where you can track their changes. All data logs on usb uart for approximately every 1 sec when the data value changes.


void application_task ( void )
{
    uint8_t range_value;
    float lux_value;

    lightranger_start_single_shot_range_mode( &lightranger );

    lightranger_poll_range( &lightranger );
    lightranger_interrupts_clear( &lightranger );

    range_value = lightranger_get_distance( &lightranger );
    log_printf( &logger, "Proximity : %u mm\r\n", ( uint16_t ) range_value );

    lux_value = lightranger_get_ambiant_light( &lightranger, LIGHTRANGER_CMD_GAIN_1X );
    log_printf( &logger, "Ambient Light: %.2f lux\r\n", lux_value );

    log_printf( &logger, "*******************************************\r\n" );
    Delay_ms ( 500 );
}

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.LightRanger

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. 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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