lightranger7  2.1.0.0
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LightRanger 7 click

LightRanger 7 Click is a compact add-on board capable of precise distance measurement and motion tracking. This board features the AFBR-S50, a medium-range 3D multipixel Time-of-Flight (ToF) sensor from Broadcom. Besides a VCSEL-based ToF sensor (Laser Class 1 eye safety), optimized to measure various distances working equally well on white, black, colored, and metallic reflective surfaces, this board also includes a 32-bit MCU, RA4M2 group of Renesas MCU with Arm® Cortex®-M33 core, alongside a 4-pin standard CAN connections compatible with Pixhawk®, a popular general-purpose flight controller.

click Product page


Click library

  • Author : Stefan Filipovic
  • Date : Mar 2023.
  • Type : UART type

Software Support

We provide a library for the LightRanger 7 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 LightRanger 7 Click driver.

Standard key functions :

Example key functions :

Example Description

This example demonstrates the use of LightRanger 7 click board by processing the incoming data and displaying them on the USB UART.

The demo application is composed of two sections :

Application Init

Initializes the driver and performs the click default configuration.

void application_init ( void )
{
log_cfg_t log_cfg;
lightranger7_cfg_t lightranger7_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
lightranger7_cfg_setup( &lightranger7_cfg );
LIGHTRANGER7_MAP_MIKROBUS( lightranger7_cfg, MIKROBUS_1 );
if ( UART_ERROR == lightranger7_init( &lightranger7, &lightranger7_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
log_printf( &logger, " Reset device\r\n" );
lightranger7_reset_device ( &lightranger7 );
log_info( &logger, " Application Task " );
}

Application Task

Reads and processes all incoming data and displays them on the USB UART.

void application_task ( void )
{
lightranger7_process( &lightranger7 );
if ( app_buf_len > 0 )
{
log_printf( &logger, "%s", app_buf );
lightranger7_clear_app_buf( );
}
}

Note

By default, the click board is programmed with the AFBR_S50_Example_RA4M2 firmware.

At the beginning this FW returns API version, chip ID, and module version. After that it starts the measurements and prints the recent measurement results that consists of:

  • Time stamp in seconds since the last MCU reset.
  • Range in mm (converting the Q9.22 value to mm).
  • Amplitude in LSB (converting the UQ12.4 value to LSB).
  • Signal Quality in % (100% = good signal).
  • Status (0: OK; < 0: Error; > 0: Warning.

For more information refer to the AFBR-S50 GitHub repository.

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.LightRanger7

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.


LIGHTRANGER7_MAP_MIKROBUS
#define LIGHTRANGER7_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: lightranger7.h:100
lightranger7_generic_write
err_t lightranger7_generic_write(lightranger7_t *ctx, uint8_t *data_in, uint16_t len)
LightRanger 7 data writing function.
lightranger7_cfg_setup
void lightranger7_cfg_setup(lightranger7_cfg_t *cfg)
LightRanger 7 configuration object setup function.
lightranger7_cfg_t
LightRanger 7 Click configuration object.
Definition: lightranger7.h:131
lightranger7_reset_device
void lightranger7_reset_device(lightranger7_t *ctx)
LightRanger 7 reset device function.
application_task
void application_task(void)
Definition: main.c:99
lightranger7_generic_read
err_t lightranger7_generic_read(lightranger7_t *ctx, uint8_t *data_out, uint16_t len)
LightRanger 7 data reading function.
lightranger7_init
err_t lightranger7_init(lightranger7_t *ctx, lightranger7_cfg_t *cfg)
LightRanger 7 initialization function.
application_init
void application_init(void)
Definition: main.c:68
lightranger7_t
LightRanger 7 Click context object.
Definition: lightranger7.h:113