Mikroelektronika d.o.o.
GMR Angle Click-Platine
GMR Angle Click-Platine
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Das GMR Angle Click Board™ verfügt über den TLI5012B E1000, einen vorkalibrierten 360°-Winkelsensor von Infineon, der die Ausrichtung eines Magnetfelds erkennt. Das GMR Angle Click ist ideal für die Winkelpositionserkennung in Industrie- und Verbraucheranwendungen wie einem elektrisch kommutierten Motor (z. B. BLDC), Lüftern oder Pumpen.
Das GMR Angle Click wird von einer mikroSDK-kompatiblen Bibliothek unterstützt, die Funktionen enthält, die die Softwareentwicklung vereinfachen. Dieses Click Board™ wird als vollständig getestetes Produkt geliefert und ist bereit für den Einsatz auf einem System, das mit der mikroBUS™-Buchse ausgestattet ist.
How Does The GMR Angle Click Board™ Work?
The GMR Angle Click Board™ contains the TLI5012B E1000 from Infineon Technologies AG, GMR-based is a 360° angle sensor, for detects any kind the orientation of a magnetic field, and the analog multiplexer 74HCT4053, switch a bi-directional Synchronous Serial Communication DATA line. This is achieved by measuring sine and cosine angle components with monolithic integrated Giant Magneto Resistance (iGMR) elements. These raw signals (sine and cosine) are digitally processed internally to calculate the angle orientation of the magnetic field (magnet).
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The calibration parameters are stored in laser fuses. At start-up the values of the fuses are written into flip-flops, where these values can be changed by the application-specific parameters. Further precision of the angle measurement over a wide temperature range and a long lifetime are improved with the internal autocalibration algorithm.
The Giant Magneto Resistance (GMR) sensor is implemented using vertical integration. This means that the GMR-sensitive areas are integrated above the logic part of the TLI5012B E1000 device. These GMR elements change their resistance depending on the direction of the magnetic field. Four individual GMR elements are connected to one Wheatstone sensor bridge. These GMR elements sense one of two components of the applied magnetic field: • X component, Vx (cosine) or the • Y component, Vy (sine) With this full-bridge structure the maximum GMR signal is available and temperature effects cancel out each other
The GMR Angle Click Board™ also features the 74HCT4053, which is a triple single-pole double-throw analog switch (3x SPDT) suitable for use in analog or digital 2:1 multiplexer/demultiplexer applications. Each switch features a digital select input (Sn), two independent inputs/outputs (nY0 and nY1) and a common input/output (nZ). A digital enable input (E) is common to all switches. When E is HIGH, the switches are turned off. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC. When CSS pin on microBUS is HIGH, switches in multiplexer connect DATA line with MOSI line, in other case when CSS pin is LOW, swithces connect DATA line with MISO line.
The 74HCT4053 is mainly used for Analog multiplexing and demultiplexing, Digital multiplexing and demultiplexing and Signal gating, but in this one the 74HCT4053 is used for selection SPI line.
These feature enable the GMR Angle Click Board™ to be used for various applications, most notably for angular position sensing in industrial and consumer applications such as electrical commutated motor (e.g. BLDC), fans or pumps.
SPECIFICATIONS
| Type | Magnetic |
| Applications | The GMR Angle Click Board™ is ideal for angular position sensing in industrial and consumer applications such as electrical commutated motor (e.g. BLDC), fans or pumps |
| On-board modules | TLI5012B E1000, a 360° angle sensor from Infineon, 74HCT4053 2:1 multiplexer/demultiplexer applications from nexperia. |
| Key Features | Absolute 0.01° resolution, ,Fast angle update period (42.7μs), Maximal 1.9° angle error and temperature-range with activated auto-calibration. |
| Interface | GPIO,SPI |
| Compatibility | mikroBUS |
| Click board size | M (42.9 x 25.4 mm) |
| Input Voltage | 3.3V or 5V |
PINOUT DIAGRAM
This table shows how the pinout of the GMR Angle Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).
| Notes | Pin |  |
Pin | Notes | |||
|---|---|---|---|---|---|---|---|
| Interface A | IFA | 1 | AN | PWM | 16 | IFC | Interface C |
| Communication serial select | CSS | 2 | RST | INT | 15 | IFB | Interface B |
| SPI Chip Enable | CS | 3 | CS | RX | 14 | NC | |
| SPI Clock | SCK | 4 | SCK | TX | 13 | NC | |
| SPI SDO | SDO | 5 | MISO | SCL | 12 | NC | |
| SPI SDI | SDI | 6 | MOSI | SDA | 11 | NC | |
| Power Supply | 3.3V | 7 | 3.3V | 5V | 10 | 5V | Power Supply |
| Ground | GND | 8 | GND | GND | 9 | GND | Ground |
ONBOARD SETTINGS AND INDICATORS
| Label | Name | Default | Description |
|---|---|---|---|
| LD1 | PWR | - | Power led indicator |
| JP1 | VCC SEL | Left | Power supply voltage selection: left position 3.3V, right position 5V |
Software Support
We provide a library for the GMR Angle Click on our LibStock page, as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.
Library Description
The library covers all the necessary functions to control GMR Angle click board. A library performs a standard SPI interface communication.
Key Functions
uint16_t gmrangle_readData( uint8_t registerAddress )- Generic read 16-bit data function.void gmrangle_writeData( uint8_t registerAddress, uint16_t writeData )- Generic write 16-bit data function.float gmrangle_calculateAngle()- Calculate angle function.
Example Description
The application is composed of three sections :
- System Initialization - Initializes SPI, GPIO and LOG structures, sets AN and INT pins as input and RST, CS and PWM pins as output and start to write log.
- Application Initialization - Initialization driver enables - SPI, initializes, also write log.
- Application Task - (code snippet) This is an example which demonstrates the use of GMR Angle Click board. Display angle value in degrees. Results are being sent to the Usart Terminal where you can track their changes. All data logs write on USB uart changes for every 1 sec.
void applicationTask()
{
angle = gmrangle_calculateAngle();
FloatToStr( angle, logText );
mikrobus_logWrite( " Angle is ", _LOG_TEXT );
mikrobus_logWrite( logText, _LOG_TEXT );
mikrobus_logWrite( degCel, _LOG_LINE );
mikrobus_logWrite( "---------------------", _LOG_LINE );
Delay_1sec();
}
The full application code, and ready to use projects can be found on our LibStock page.
Other mikroE Libraries used in the example:
- SPI
- UART
- Conversions
Additional Notes and Information
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.
MIKROSDK
The GMR Angle 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.
GMR Angle Click-Platine
Frequently Asked Questions
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