compass  2.0.0.0
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Compass click

Compass click is an add-on board in mikroBUS form factor. It features LSM303DLHC ultra compact high performance e-compass module.

click Product page


Click library

Software Support

We provide a library for the Compass 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 Compass Click driver.

Standard key functions :

Example key functions :

Examples Description

This application measures magnetic and accelerometer axes data and shows them over USBUART

The demo application is composed of two sections :

Application Init

Initialization driver init and init chip

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 ----\r\n" );
// Click initialization.
COMPASS_MAP_MIKROBUS( cfg, MIKROBUS_1 );
compass_init( &compass, &cfg );
}

Application Task

Read magnet axis data and accel axis data and logs data on USBUART every 1 sec.

void application_task ( void )
{
int16_t accel_axis[ 3 ];
int16_t magnet_axis[ 3 ];
compass_read_magnet_axis( &compass, &magnet_axis[ 0 ], &magnet_axis[ 1 ], &magnet_axis[ 2 ] );
log_printf( &logger, "Magnet axis -- X: %d Y: %d Z: %d \r\n", magnet_axis[ 0 ], magnet_axis[ 1 ], magnet_axis[ 2 ] );
compass_read_accel_axis ( &compass, &accel_axis[ 0 ], &accel_axis[ 1 ], &accel_axis[ 2 ] );
log_printf( &logger, "Magnet axis -- X: %d Y: %d Z: %d \r\n", accel_axis[ 0 ], accel_axis[ 1 ], accel_axis[ 2 ] );
log_printf( &logger, " \r\n");
Delay_ms( 1000 );
}

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.