3D Hall 11 Click

How does it work?

3D Hall 11 Click as its foundation uses the TMAG5273, a 3D linear Hall-effect sensor used to detect the strength of a magnetic field in all three dimensions (X, Y, and Z axes) in a range up to ±40mT or ±80mT from Texas Instruments. A precision analog signal chain and an integrated 12-bit ADC enable high accuracy and low drift magnetic field measurements while supporting a sampling of up to 20kSPS. It also has an integrated temperature sensor available for multiple system functions, such as thermal budget check or temperature compensation calculation for a given magnetic field. The output signals (raw X, Y, and Z magnetic data and temperature data) are accessible through the I2C interface.

This Click board™ can be configured to various power options, including Wake-Up and Sleep mode, optimizing system power consumption. Also, an integrated angle calculation engine (CORDIC) provides complete 360° angular position information for both on-axis and off-axis angle measurement topologies, performed via two user-selected magnetic axes. It also features magnetic gain and offset correction to mitigate the impact of system mechanical error sources.

3D Hall 11 Click communicates with MCU using the standard I2C 2-Wire interface with a maximum clock frequency of 1MHz to enable any combination of magnetic axes and temperature measurements. Besides a dedicated interrupt pin, the INT pin of the mikroBUS™ socket act as a system interrupt during low power Wake-Up and Sleep mode and can also be used by an MCU to trigger a new sensor conversion.

This Click board™ can operate with both 3.3V and 5V logic voltage levels selected via the VIO SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to use the communication lines properly. However, the Click board™ comes equipped with a library that contains easy-to-use functions and an example code that can be used, as a reference, for further development.

Specifications

Pinout diagram

This table shows how the pinout on 3D Hall 11 Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
	NC	1	AN	PWM	16	NC
	NC	2	RST	INT	15	INT	Interrupt
	NC	3	CS	RX	14	NC
	NC	4	SCK	TX	13	NC
	NC	5	MISO	SCL	12	SCL	I2C Clock
	NC	6	MOSI	SDA	11	SDA	I2C Data
Power Supply	3.3V	7	3.3V	5V	10	5V	Power Supply
Ground	GND	8	GND	GND	9	GND	Ground

Onboard settings and indicators

3D Hall 11 Click electrical specifications

Software Support

We provide a library for the 3D Hall 11 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 3D Hall 11 Click driver.

Key functions

• c3dhall11_write_register This function writes a desired data to the selected register by using I2C serial interface.

• c3dhall11_read_register This function reads data from the selected register.

• c3dhall11_read_data This function reads new data which consists of X, Y, and Z axis values in mT, and temperature in Celsius. It also reads the angle in Degrees between X and Y by default, and magnitude data as well.

Example Description

This example demonstrates the use of 3D Hall 11 Click board™ by reading the magnetic flux density from 3 axes, and the angle and magnitude between X and Y axes as well as the sensor internal temperature.

void application_task ( void ) 
 { 
     c3dhall11_data_t sensor_data; 
     if ( C3DHALL11_OK == c3dhall11_read_data ( &c3dhall11, &sensor_data ) ) 
     { 
         log_printf( &logger, " X-axis: %.1f mTrn", sensor_data.x_axis ); 
         log_printf( &logger, " Y-axis: %.1f mTrn", sensor_data.y_axis ); 
         log_printf( &logger, " Z-axis: %.1f mTrn", sensor_data.z_axis ); 
         log_printf( &logger, " Angle: %.1f Degreesrn", sensor_data.angle ); 
         log_printf( &logger, " Magnitude: %urn", ( uint16_t ) sensor_data.magnitude ); 
         log_printf( &logger, " Temperature: %.2f Celsiusrnn", sensor_data.temperature ); 
         Delay_ms ( 100 ); 
     } 
 }

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.3DHall11

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.

mikroSDK

This Click board™ is supported with mikroSDK – MikroElektronika Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.

For more information about mikroSDK, visit the official page.