lightranger4  2.0.0.0
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Light Ranger 4 click

Light Ranger 4 click is an accurate distance measurement Click board based on a ToF (Time of Flight) measurement principle.

click Product page


Click library

Software Support

We provide a library for the LightRanger4 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 LightRanger4 Click driver.

Standard key functions :

Example key functions :

Examples Description

Demo application is used to shows basic controls LightRanger 4 click

The demo application is composed of two sections :

Application Init

Configuring clicks and log objects. Settings the click in the default configuration, adjusts the LONG mode (distance measurement up to 4 meters), sets the time budget and start measurement with the adjustment of inter measurements period.

void application_init ( void )
{
log_cfg_t log_cfg;
// Logger initialization.
log_cfg.level = LOG_LEVEL_DEBUG;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, "---- Application Init ----" );
// Click initialization.
LIGHTRANGER4_MAP_MIKROBUS( cfg, MIKROBUS_1 );
lightranger4_init( &lightranger4, &cfg );
lightranger4_power_on( &lightranger4 );
log_info( &logger, "--- Wait until the configuration of the chip is completed ---" );
lightranger4_default_cfg( &lightranger4 );
lightranger4_start_measurement( &lightranger4, 20 );
log_info( &logger, "--- Sensor start measurement ---" );
Delay_100ms( );
}

Application Task

Reads the distance of the object in front of the sensor and logs distance to USBUART every 500 ms.

void application_task ( void )
{
uint16_t distance;
uint8_t m_status;
// Task implementation.
while ( lightranger4_new_data_ready( &lightranger4 ) != 0 )
{
Delay_1ms();
}
distance = lightranger4_get_distance( &lightranger4 );
log_printf( &logger, "** Distance: %d mm \r\n", distance );
m_status = lightranger4_get_range_status( &lightranger4 );
switch ( m_status )
{
{
log_info( &logger, "Signal fail." );
break;
}
{
log_info( &logger, "Phase out of valid limits" );
break;
}
{
log_info( &logger, "Sigma Fail. " );
break;
}
{
log_info( &logger, "Wrap target fail." );
break;
}
{
log_info( &logger, "Target is below minimum detection threshold. " );
break;
}
}
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:

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.