magneto  2.0.0.0
Main Page

MAGNETO Click

MAGNETO Click carries contactless magnetic angle position sensor which delivers precise angle measurements down to 0.05º in 14-bit resolution.

Click Product page


Click library

  • Author : Mihajlo Djordjevic
  • Date : Dec 2019.
  • Type : SPI type

Software Support

We provide a library for the Magneto 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 Magneto Click driver.

Standard key functions :

  • Config Object Initialization function.

    void magneto_cfg_setup ( magneto_cfg_t *cfg );

  • Initialization function.

    MAGNETO_RETVAL magneto_init ( magneto_t *ctx, magneto_cfg_t *cfg );

  • Click Default Configuration function.

    void magneto_default_cfg ( magneto_t *ctx );

Example key functions :

  • This function read and returns the value of the state register.

    uint16_t magneto_get_state ( magneto_t *ctx );

  • This function read the 16-bit data from register then calculate and convert to float angle value from 0deg to 360deg.

    float magneto_calculate_angle ( magneto_t *ctx );

Examples Description

Example presents precise angle measurements down to 0.05º in 14-bit resolution.

The demo application is composed of two sections :

Application Init

Application Init performs Logger and Click initialization.

void application_init ( void )
{
log_cfg_t log_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_printf( &logger, "--------------------------\r\n" );
log_printf( &logger, " Application Init\r\n" );
Delay_ms ( 100 );
// Click initialization.
MAGNETO_MAP_MIKROBUS( cfg, MIKROBUS_1 );
magneto_init( &magneto, &cfg );
log_printf( &logger, "--------------------------\r\n" );
log_printf( &logger, " ----- MAGNETO Click ---- \r\n" );
log_printf( &logger, "--------------------------\r\n" );
Delay_ms ( 1000 );
if ( magneto_get_state( &magneto ) != 1 )
{
log_printf( &logger, " -- Initialization done --\r\n" );
}
else
{
log_printf( &logger, " -------- ERROR ! --------\r\n" );
}
log_printf( &logger, "--------------------------\r\n" );
Delay_ms ( 1000 );
}

Application Task

Magneto Click communicates with register via SPI by write and read from register and calculate float angle value. Results are being sent to the UART Terminal where you can track their changes. All data logs on USB UART for aproximetly every 2 sec.

void application_task ( void )
{
angle_value = magneto_calculate_angle( &magneto );
log_printf( &logger, " [ANGLE] : %0.3f \r\n", angle_value );
Delay_ms ( 1000 );
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:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.Magneto

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.


magneto_init
MAGNETO_RETVAL magneto_init(magneto_t *ctx, magneto_cfg_t *cfg)
Initialization function.
MAGNETO_MAP_MIKROBUS
#define MAGNETO_MAP_MIKROBUS(cfg, mikrobus)
Definition: magneto.h:67
magneto_cfg_t
Click configuration structure definition.
Definition: magneto.h:148
application_task
void application_task(void)
Definition: main.c:79
angle_value
float angle_value
Definition: main.c:27
magneto_cfg_setup
void magneto_cfg_setup(magneto_cfg_t *cfg)
Config Object Initialization function.
application_init
void application_init(void)
Definition: main.c:36
magneto_get_state
uint16_t magneto_get_state(magneto_t *ctx)
Get state function.