tiltnshake

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TILT-n-SHAKE click

TILT-n-SHAKE click carries Freescale’s MMA8491Q IC. It’s a multifunctional 3-axis digital accelerometer that can also be configured as a 45-degree Tilt sensor.

click Product page

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Click library

• Author : MikroE Team
• Date : dec 2019.
• Type : I2C type

Software Support

We provide a library for the TiltNshake 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 TiltNshake Click driver.

Standard key functions :

• Config Object Initialization function.

void tiltnshake_cfg_setup ( tiltnshake_cfg_t *cfg );

• Initialization function.

TILTNSHAKE_RETVAL tiltnshake_init ( tiltnshake_t *ctx, tiltnshake_cfg_t *cfg );

Example key functions :

• Function for read status and axis

void tiltnshake_read_status_and_axis ( tiltnshake_t *ctx, uint8_t *status, uint16_t *out_x, uint16_t *out_y, uint16_t *out_z );

• Function for conversion

void tiltnshake_conversion ( uint16_t *out_x, uint16_t *out_y, uint16_t *out_z, float *out_x_flo, float *out_y_flo, float *out_z_flo );

• Function for enabled chip

void tiltnshake_enable ( tiltnshake_t *ctx, uint8_t en );

Examples Description

This application is multifunctional 3-axis digital accelerometer that can also be configured as a 45-degree Tilt sensor.

The demo application is composed of two sections :

Application Init

Initializes device init.

void application_init ( void )
{
    log_cfg_t log_cfg;
    tiltnshake_cfg_t cfg;

    //  Logger initialization.

    log_cfg.level = LOG_LEVEL_DEBUG;
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, "---- Application Init ----" );

    //  Click initialization.

    tiltnshake_cfg_setup( &cfg );
    TILTNSHAKE_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    tiltnshake_init( &tiltnshake, &cfg );
}
  

Application Task

Reads every tilt and shake and logs to USBUART_A.

void application_task ( )
{
    uint8_t tiltnshake_status;
    float tiltnshake_out_x_float;
    float tiltnshake_out_y_float;
    float tiltnshake_out_z_float;
    uint16_t tiltnshake_out_x;
    uint16_t tiltnshake_out_y;
    uint16_t tiltnshake_out_z;

    tiltnshake_enable( &tiltnshake, TILTNSHAKE_ENABLE );
    tiltnshake_read_status_and_axis( &tiltnshake, &tiltnshake_status, &tiltnshake_out_x, &tiltnshake_out_y, &tiltnshake_out_z );
    tiltnshake_enable( &tiltnshake, TILTNSHAKE_DISABLE );

    if ( tiltnshake_status == TILTNSHAKE_DATA_READY )
    {
        tiltnshake_conversion
        ( 
             &tiltnshake_out_x, 
             &tiltnshake_out_y, 
             &tiltnshake_out_z,
             &tiltnshake_out_x_float, 
             &tiltnshake_out_y_float, 
             &tiltnshake_out_z_float 
        ); 
        
        log_printf( &logger, " \r\n" );
        log_printf( &logger, "X_out = %.2f \r\n", tiltnshake_out_x_float );
        log_printf( &logger, "Y_out = %.2f\r\n", tiltnshake_out_y_float );
        log_printf( &logger, "Z_out = %.2f\r\n", tiltnshake_out_z_float );
        log_printf( &logger, "-----------------------------------------------\r\n");
        Delay_ms( 500 );
    }
    Delay_ms( 1700 );
}

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.TiltNshake

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.

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