BRIX5

#include <Wire.h>

#include <Adafruit_Sensor.h>

#include <Adafruit_BNO055.h>

#include <utility/imumaths.h>

#include <EEPROM.h>

/* This driver uses the Adafruit unified sensor library (Adafruit_Sensor),

   which provides a common 'type' for sensor data and some helper functions.

   To use this driver you will also need to download the Adafruit_Sensor

   library and include it in your libraries folder.

   You should also assign a unique ID to this sensor for use with

   the Adafruit Sensor API so that you can identify this particular

   sensor in any data logs, etc.  To assign a unique ID, simply

   provide an appropriate value in the constructor below (12345

   is used by default in this example).

   Connections

   ===========

   Connect SCL to analog 5

   Connect SDA to analog 4

   Connect VDD to 3-5V DC

   Connect GROUND to common ground

   History

   =======

   2015/MAR/03  - First release (KTOWN)

   2015/AUG/27  - Added calibration and system status helpers

   2015/NOV/13  - Added calibration save and restore

   */

/* Set the delay between fresh samples */

#define BNO055_SAMPLERATE_DELAY_MS (100)

Adafruit_BNO055 bno = Adafruit_BNO055(55);

/**************************************************************************/

/*

    Displays some basic information on this sensor from the unified

    sensor API sensor_t type (see Adafruit_Sensor for more information)

    */

/**************************************************************************/

void displaySensorDetails(void)

{

    sensor_t sensor;

    bno.getSensor(&sensor);

    Serial.println("------------------------------------");

    Serial.print("Sensor:       "); Serial.println(sensor.name);

    Serial.print("Driver Ver:   "); Serial.println(sensor.version);

    Serial.print("Unique ID:    "); Serial.println(sensor.sensor_id);

    Serial.print("Max Value:    "); Serial.print(sensor.max_value); Serial.println(" xxx");

    Serial.print("Min Value:    "); Serial.print(sensor.min_value); Serial.println(" xxx");

    Serial.print("Resolution:   "); Serial.print(sensor.resolution); Serial.println(" xxx");

    Serial.println("------------------------------------");

    Serial.println("");

    delay(500);

}

/**************************************************************************/

/*

    Display some basic info about the sensor status

    */

/**************************************************************************/

void displaySensorStatus(void)

{

    /* Get the system status values (mostly for debugging purposes) */

    uint8_t system_status, self_test_results, system_error;

    system_status = self_test_results = system_error = 0;

    bno.getSystemStatus(&system_status, &self_test_results, &system_error);

    /* Display the results in the Serial Monitor */

    Serial.println("");

    Serial.print("System Status: 0x");

    Serial.println(system_status, HEX);

    Serial.print("Self Test:     0x");

    Serial.println(self_test_results, HEX);

    Serial.print("System Error:  0x");

    Serial.println(system_error, HEX);

    Serial.println("");

    delay(500);

}

/**************************************************************************/

/*

    Display sensor calibration status

    */

/**************************************************************************/

void displayCalStatus(void)

{

    /* Get the four calibration values (0..3) */

    /* Any sensor data reporting 0 should be ignored, */

    /* 3 means 'fully calibrated" */

    uint8_t system, gyro, accel, mag;

    system = gyro = accel = mag = 0;

    bno.getCalibration(&system, &gyro, &accel, &mag);

    /* The data should be ignored until the system calibration is > 0 */

    Serial.print("\t");

    if (!system)

    {

        Serial.print("! ");

    }

    /* Display the individual values */

    Serial.print("Sys:");

    Serial.print(system, DEC);

    Serial.print(" G:");

    Serial.print(gyro, DEC);

    Serial.print(" A:");

    Serial.print(accel, DEC);

    Serial.print(" M:");

    Serial.print(mag, DEC);

}

/**************************************************************************/

/*

    Display the raw calibration offset and radius data

    */

/**************************************************************************/

void displaySensorOffsets(const adafruit_bno055_offsets_t &calibData)

{

    Serial.print("Accelerometer: ");

    Serial.print(calibData.accel_offset_x); Serial.print(" ");

    Serial.print(calibData.accel_offset_y); Serial.print(" ");

    Serial.print(calibData.accel_offset_z); Serial.print(" ");

    Serial.print("\nGyro: ");

    Serial.print(calibData.gyro_offset_x); Serial.print(" ");

    Serial.print(calibData.gyro_offset_y); Serial.print(" ");

    Serial.print(calibData.gyro_offset_z); Serial.print(" ");

    Serial.print("\nMag: ");

    Serial.print(calibData.mag_offset_x); Serial.print(" ");

    Serial.print(calibData.mag_offset_y); Serial.print(" ");

    Serial.print(calibData.mag_offset_z); Serial.print(" ");

    Serial.print("\nAccel Radius: ");

    Serial.print(calibData.accel_radius);

    Serial.print("\nMag Radius: ");

    Serial.print(calibData.mag_radius);

}

/**************************************************************************/

/*

    Arduino setup function (automatically called at startup)

    */

/**************************************************************************/

void setup(void)

{

    Serial.begin(115200);

    delay(1000);

    Serial.println("Orientation Sensor Test"); Serial.println("");

    /* Initialise the sensor */

    if (!bno.begin())

    {

        /* There was a problem detecting the BNO055 ... check your connections */

        Serial.print("Ooops, no BNO055 detected ... Check your wiring or I2C ADDR!");

        while (1);

    }

    int eeAddress = 0;

    long bnoID;

    bool foundCalib = false;

    EEPROM.get(eeAddress, bnoID);

    adafruit_bno055_offsets_t calibrationData;

    sensor_t sensor;

    /*

    *  Look for the sensor's unique ID at the beginning oF EEPROM.

    *  This isn't foolproof, but it's better than nothing.

    */

    bno.getSensor(&sensor);

    if (bnoID != sensor.sensor_id)

    {

        Serial.println("\nNo Calibration Data for this sensor exists in EEPROM");

        delay(500);

    }

    else

    {

        Serial.println("\nFound Calibration for this sensor in EEPROM.");

        eeAddress += sizeof(long);

        EEPROM.get(eeAddress, calibrationData);

        displaySensorOffsets(calibrationData);

        Serial.println("\n\nRestoring Calibration data to the BNO055...");

        bno.setSensorOffsets(calibrationData);

        Serial.println("\n\nCalibration data loaded into BNO055");

        foundCalib = true;

    }

    delay(1000);

    /* Display some basic information on this sensor */

    displaySensorDetails();

    /* Optional: Display current status */

    displaySensorStatus();

   /* Crystal must be configured AFTER loading calibration data into BNO055. */

    bno.setExtCrystalUse(true);

    sensors_event_t event;

    bno.getEvent(&event);

    /* always recal the mag as It goes out of calibration very often */

    if (foundCalib){

        Serial.println("Move sensor slightly to calibrate magnetometers");

        while (!bno.isFullyCalibrated())

        {

            bno.getEvent(&event);

            delay(BNO055_SAMPLERATE_DELAY_MS);

        }

    }

    else

    {

        Serial.println("Please Calibrate Sensor: ");

        while (!bno.isFullyCalibrated())

        {

            bno.getEvent(&event);

            Serial.print("X: ");

            Serial.print(event.orientation.x, 4);

            Serial.print("\tY: ");

            Serial.print(event.orientation.y, 4);

            Serial.print("\tZ: ");

            Serial.print(event.orientation.z, 4);

            /* Optional: Display calibration status */

            displayCalStatus();

            /* New line for the next sample */

            Serial.println("");

            /* Wait the specified delay before requesting new data */

            delay(BNO055_SAMPLERATE_DELAY_MS);

        }

    }

    Serial.println("\nFully calibrated!");

    Serial.println("--------------------------------");

    Serial.println("Calibration Results: ");

    adafruit_bno055_offsets_t newCalib;

    bno.getSensorOffsets(newCalib);

    displaySensorOffsets(newCalib);

    Serial.println("\n\nStoring calibration data to EEPROM...");

    eeAddress = 0;

    bno.getSensor(&sensor);

    bnoID = sensor.sensor_id;

    EEPROM.put(eeAddress, bnoID);

    eeAddress += sizeof(long);

    EEPROM.put(eeAddress, newCalib);

    Serial.println("Data stored to EEPROM.");

    Serial.println("\n--------------------------------\n");

    delay(500);

}

void loop() {

    /* Get a new sensor event */

    sensors_event_t event;

    bno.getEvent(&event);

    /* Display the floating point data */

    Serial.print("X: ");

    Serial.print(event.orientation.x, 4);

    Serial.print("\tY: ");

    Serial.print(event.orientation.y, 4);

    Serial.print("\tZ: ");

    Serial.print(event.orientation.z, 4);

    /* Optional: Display calibration status */

    displayCalStatus();

    /* Optional: Display sensor status (debug only) */

    //displaySensorStatus();

    /* New line for the next sample */

    Serial.println("");

    /* Wait the specified delay before requesting new data */

    delay(BNO055_SAMPLERATE_DELAY_MS);

}