Mikroelektronika d.o.o.
Winkel 8 Klickbrett
Winkel 8 Klickbrett
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Das Angle 8 Click Board™ ist eine kompakte Zusatzplatine, die die absolute Winkelposition eines Permanentmagneten erkennt. Diese Platine verfügt über den MA782GGU, einen Winkelsensor mit geringem Stromverbrauch und integrierter Wake-up-Winkelerkennung von Monolithic Power Systems. Mit seiner Power-Cycling-Fähigkeit kann das MA782GGU für Anwendungen optimiert werden, die eine geringe Durchschnittsleistung erfordern. Es unterstützt eine Vielzahl von Magnetfeldstärken und räumlichen Konfigurationen, sowohl mit Wellenende als auch mit außeraxialer (seitlicher Wellenmontage) unterstützte Konfigurationen. Die schnelle Datenerfassung und -verarbeitung ermöglicht eine genaue Winkelmessung bei einem angelegten Magnetfeld von 60 mT sowie eine Magnetfeldstärkeerkennung mit programmierbaren Schwellenwerten. Dieses Click Board™ eignet sich für allgemeine Winkelmessungen, in eingebetteten Bewegungssteuerungsanwendungen, als Triggerlösung für Leistungs-/Geschwindigkeitssteuerung und mehr.
Das Angle 8 Click Board™ 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 Angle 8 Click Board™ Work?
The Angle 8 Click Board™ uses the MA782GGU, a low-power angle sensor with integrated wake-up angle detection from Monolithic Power Systems. It allows users to read angle position information and detect the speed or direction of magnet rotation. With its power cycling ability, the MA782GGU can be optimized for applications that require low average power. Fast data acquisition and processing provides accurate angle measurement at an applied magnetic field of 60mT. It supports a wide range of magnetic field strengths and spatial configurations, with both end-of-shaft and off-axis (side-shaft mounting), supported configurations.
The MA782GGU features magnetic field strength detection with configurable thresholds to sense the magnet position relative to the sensor for certain functions (e.g. sensing the axial movements or for diagnostics). On-chip non-volatile memory stores configuration parameters, including the reference zero angle position, the power cycling parameters, the filter window affecting the output resolution, and magnetic field detection thresholds.
The Angle 8 Click Board™ communicates with MCU using the standard SPI serial interface for angle reading and register programming, which supports SPI Mode 0 and 3 and operates at clock rates up to 25 MHz. This Click board™ uses the Enable pin labelled as EN and routed to the CS pin of the mikroBUS™ socket to optimize power consumption, used for its power ON/OFF purposes. It has three power modes: Active, Idle, and Automatic sampling cycle (ASC). By combining these three power modes, the MA782GGU can be operated in different ways. In ASC mode, the MA782GGU switches between Active and Idle mode. The selection can be made by positioning SMD jumper labelled as ASC SEL to an appropriate position marked as 0 or 1.
Besides this pins, it also uses two indicators, new data and data valid indicators labelled as ND and DV routed to the AN and RST pins of the mikroBUS™ socket. In ASC mode, the ND signal indicates when new data is ready to be read, or if the displacement exceeds the defined threshold, while the DV signal indicates the stabilization of the digital filter. It also has the magnetic flag used to indicate when the sensor position's magnetic field is out of range, defined by the lower magnetic field thresholds, routed on the INT pin of the mikroBUS™ socket labelled as MGL.
The Angle 8 Click Board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used, as a reference, for further development.
SPECIFICATIONS
| Type | Magnetic |
| Applications | The Angle 8 Click Board™ be used for general-purpose angle measurements, in embedded motion control applications, as a power/speed control trigger solution, and more |
| On-board modules | MA782GGU - low-power angle sensor with integrated wake-up angle detection from Monolithic Power Systems |
| Key Features | Fast data acquisition, SPI serial interface, magnetic field strength detection, angle detection interrupt to wake-up the system, supported both end-of-shaft and off-axis, and many more |
| Interface | SPI |
| Compatibility | mikroBUS |
| Click board size | S (28.6 x 25.4 mm) |
| Input Voltage | 3.3V |
PINOUT DIAGRAM
This table shows how the pinout of the Angle 8 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).
| Notes | Pin |  |
Pin | Notes | |||
|---|---|---|---|---|---|---|---|
| New Data Indication | ND | 1 | AN | PWM | 16 | EN | Enable |
| Data Valid Indication | DV | 2 | RST | INT | 15 | MGL | Magnetic Field Strength Detection (LOW) |
| SPI Chip Select | CS | 3 | CS | RX | 14 | NC | |
| SPI Clock | SCK | 4 | SCK | TX | 13 | NC | |
| SPI Data OUT | SDO | 5 | MISO | SCL | 12 | NC | |
| SPI Data IN | SDI | 6 | MOSI | SDA | 11 | NC | |
| Power Supply | 3.3V | 7 | 3.3V | 5V | 10 | NC | |
| Ground | GND | 8 | GND | GND | 9 | GND | Ground |
ONBOARD SETTINGS AND INDICATORS
| Label | Name | Default | Description |
|---|---|---|---|
| LD1 | PWR | - | Power LED Indicator |
| JP1 | ASC SEL | Left | Automatic Sampling Cycle Mode Selection 0/1: Left position 0, Right position 1 |
ANGLE 8 CLICK ELECTRICAL SPECIFICATIONS
| Description | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | - | 3.3 | - | V |
| Magnetic Filed Detection Range | 30 | 60 | - | mT |
| Magnetic Field Detection Accuracy | - | 5 | - | mT |
| Resolution | 8 | - | 12 | bit |
| Operating Temperature Range | -40 | +25 | +125 | °C |
Software Support
We provide a library for the Angle 8 Click Board™ as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.
The package can be downloaded/installed directly from NECTO Studio The package Manager (recommended), downloaded from our LibStock™ or found on MikroE Github account.
Library Description
This library contains API for the Angle 8 Click Board™ driver.
Key functions
-
angle8_get_nd_pinThis function returns the new data ready (ND) pin logic state. -
angle8_set_cycle_timeThis function sets the sensor cycle time (measurement rate) in milliseconds. -
angle8_read_angleThis function reads raw angle data and converts it to degrees.
Example Description
This example demonstrates the use of the Angle 8 Click Board™ by reading and displaying the magnet's angular position in degrees.
void application_task ( void )
{
if ( angle8_get_nd_pin ( &angle8 ) )
{
float angle = 0;
if ( ANGLE8_OK == angle8_read_angle ( &angle8, &angle ) )
{
log_printf ( &logger, " Angle: %.2f Deg rnn", angle );
}
}
}
The full application code, and ready to use projects can be installed directly from NECTO Studio The package Manager (recommended), downloaded from our LibStock™ or found on MikroE Github account.
Other MikroE Libraries used in the example:
- MikroSDK.Board
- MikroSDK.Log
- Click.Angle8
Additional Notes and Information
Depending on the development board you are using, you may need a 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
The Angle 8 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.
Winkel 8 Klickbrett
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