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mikroSDK Library

Gyro 3 click

Rating:

20

Author: MikroElektronika Team

Last Updated: 2019-02-18

Category: Measurement

Downloaded: 71 times

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Gyro 3 click is a three-axis gyroscope Click board that can sense motion over three perpendicular axes. It is equipped with the I3G4250, a three-axis digital gyroscope.

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mikroSDK Library Blog

Gyro 3 click

Gyro 3 click

Native view of the Gyro 3 click board.

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Gyro 3 click

Gyro 3 click

Front and back view of the Gyro 3 click board.

View full image

Library Description

Library contains:

  • functions for getting INT and AN pin states.
  • function for setting CS pin states.
  • functions for getting and setting register values.
  • function for getting temperature register value.
  • function for getting XYZ-Axes values.
  • function for setting basic device parameters.
  • function for getting status register value.
  • function for getting FIFO data level.
  • function for interrupt threshold values and interrupt wait time.

Key functions:

  • void gyro3_config( void ) - sets basic settings to device.
  • void gyro3_getStatus( uint8_t * status_register ) - gets value of status register (27h).
  • void gyro3_getAxes( float * x_axis, float * y_axis, float * z_axis, uint8_t measurement_range ) - reads values from XYZ-Axes registers and converts them to degrees per second value based on measurement range setting.

Examples description

The application is composed of the three sections :

  • System Initialization - systemInit() - Initializes I2C interface, LOG interface and GPIO pins.
  • Application Initialization - applicationInit() - Initializes I2C driver and basic device configuratoin.
  • Application Task - applicationTask() - Checks if new data is available on all three axes, If yes then reads and logs their values.
void applicationTask( )
{
    gyro3_getStatus( &status_register );

    if ((status_register & _GYRO3_ZYX_NEW_DATA_MASK) == _GYRO3_ZYX_NEW_DATA_MASK)
    {
        gyro3_getAxes( &x_axis, &y_axis, &z_axis, _GYRO3_MEAS_RANGE_2000 );
        mikrobus_logWrite( "rn>>>>>>>>>>>>>>>>>>>", _LOG_LINE );
        FloatToStr( x_axis, text );
        mikrobus_logWrite( "x_axis : ", _LOG_TEXT );
        mikrobus_logWrite( text, _LOG_TEXT );
        mikrobus_logWrite( degrees_per_second, _LOG_LINE );
        FloatToStr( y_axis, text );
        mikrobus_logWrite( "y_axis : ", _LOG_TEXT );
        mikrobus_logWrite( text, _LOG_TEXT );
        mikrobus_logWrite( degrees_per_second, _LOG_LINE );
        FloatToStr( z_axis, text );
        mikrobus_logWrite( "z_axis : ", _LOG_TEXT );
        mikrobus_logWrite( text, _LOG_TEXT );
        mikrobus_logWrite( degrees_per_second, _LOG_LINE );
        mikrobus_logWrite( "<<<<<<<<<<<<<<<<<<<", _LOG_LINE );
    }
    Delay_ms(100);
}

Other mikroE Libraries used in the example:

  • I2C
  • UART
  • SPI

Additional notes and informations

Depending on the development board you are using, you may need USB UART clickUSB 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.

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