Library Description

The library initializes and defines the I2C bus driver and drivers that offer a choice for writing data in register and reads data form register. The library includes function for read Accel X/Y/Z axis data, Gyro X/Y/Z axis data and device Temperature data. The user also has the function for configuration Accel and Gyro and function for read interrupt state.

Key functions:

• void accel8_getAccelAxis(int16_t *x_axis, int16_t *y_axis, int16_t *z_axis) - Functions for read Accel axis data.
• void accel8_getGyroAxis(int16_t *x_axis, int16_t *y_axis, int16_t *z_axis) - Functions for read Gyro axis data.
• float accel8_getTemperature() - Functions for read Temperature data in C.

Examples description

The application is composed of the three sections :

• System Initialization - Initializes I2C module and sets INT pin as INPUT.
• Application Initialization - Initialization driver init, reset chip and start configuration chip for measurement.
• Application Task - (code snippet) - Reads Accel X/Y/Z axis, Gyro X/Y/Z axis and device Temperature. All data logs on the USBUART every 2 sec.

void applicationTask()
{
    accel8_getAccelAxis(&X_accelAxis, &Y_accelAxis, &Z_accelAxis);
    accel8_getGyroAxis(&X_gyroAxis, &Y_gyroAxis, &Z_gyroAxis);
    Temperature = accel8_getTemperature();
    
    // LOGS DATA
    mikrobus_logWrite("________________ Accel 8 click _________________", _LOG_LINE);
    mikrobus_logWrite("|  Data   | X axis | Y axis | Z axis |  Range  |", _LOG_LINE);
    mikrobus_logWrite("|_________|________|________|________|_________|", _LOG_LINE);
    mikrobus_logWrite("|  Accel  |", _LOG_TEXT);
    IntToStr(X_accelAxis, demoText);
    mikrobus_logWrite(demoText, _LOG_TEXT);
    mikrobus_logWrite("  |", _LOG_TEXT);
    IntToStr(Y_accelAxis, demoText);
    mikrobus_logWrite(demoText, _LOG_TEXT);
    mikrobus_logWrite("  |", _LOG_TEXT);
    IntToStr(Z_accelAxis, demoText);
    mikrobus_logWrite(demoText, _LOG_TEXT);
    mikrobus_logWrite("  |", _LOG_TEXT);
    IntToStr(accelRange, demoText);
    mikrobus_logWrite(demoText, _LOG_TEXT);
    mikrobus_logWrite(" g |", _LOG_LINE);
    mikrobus_logWrite("|_________|________|________|________|_________|", _LOG_LINE);
    mikrobus_logWrite("|  Gyro   |", _LOG_TEXT);
    IntToStr(X_gyroAxis, demoText);
    mikrobus_logWrite(demoText, _LOG_TEXT);
    mikrobus_logWrite("  |", _LOG_TEXT);
    IntToStr(Y_gyroAxis, demoText);
    mikrobus_logWrite(demoText, _LOG_TEXT);
    mikrobus_logWrite("  |", _LOG_TEXT);
    IntToStr(Z_gyroAxis, demoText);
    mikrobus_logWrite(demoText, _LOG_TEXT);
    mikrobus_logWrite("  |", _LOG_TEXT);
    IntToStr(gyroRange, demoText);
    mikrobus_logWrite(demoText, _LOG_TEXT);
    mikrobus_logWrite("dps|", _LOG_LINE);
    mikrobus_logWrite("|_________|________|________|________|_________|", _LOG_LINE);
    FloatToStr(Temperature, demoText);
    demoText[ 5 ] = 0;
    mikrobus_logWrite("|  Temp   |", _LOG_TEXT);
    mikrobus_logWrite(demoText, _LOG_TEXT);
    mikrobus_logWrite("  C         |", _LOG_LINE);
    mikrobus_logWrite("|_________|_________________|", _LOG_LINE);

    mikrobus_logWrite("  ", _LOG_LINE);
    Delay_ms( 2000 );
}

Other mikroE Libraries used in the example:

• I2C

Additional notes and informations

Depending on the development board you are using, you may need USB UART click, USB UART 2 clickor 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.