make some changes for our environment, and rename test functions to make sending to spark easier

Author: skylar

sparkcore/MPU6050_raw.cpp

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+// I2C device class (I2Cdev) demonstration Arduino sketch for MPU6050 class
+// 10/7/2011 by Jeff Rowberg <[email protected]>
+// Updates should (hopefully) always be available at https://github.com/jrowberg/i2cdevlib
+//
+// Changelog:
+//      2013-05-08 - added multiple output formats
+//                 - added seamless Fastwire support
+//      2011-10-07 - initial release
+
+/* ============================================
+I2Cdev device library code is placed under the MIT license
+Copyright (c) 2011 Jeff Rowberg
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+===============================================
+*/
+
+#include "MPU6050.h"
+#include "I2Cdev.h"
+
+// class default I2C address is 0x68
+// specific I2C addresses may be passed as a parameter here
+// AD0 low = 0x68 (default for InvenSense evaluation board)
+// AD0 high = 0x69
+MPU6050 accelgyro;
+//MPU6050 accelgyro(0x69); // <-- use for AD0 high
+
+int16_t ax, ay, az;
+int16_t gx, gy, gz;
+
+
+
+// uncomment "OUTPUT_READABLE_ACCELGYRO" if you want to see a tab-separated
+// list of the accel X/Y/Z and then gyro X/Y/Z values in decimal. Easy to read,
+// not so easy to parse, and slow(er) over UART.
+#define OUTPUT_READABLE_ACCELGYRO
+
+// uncomment "OUTPUT_BINARY_ACCELGYRO" to send all 6 axes of data as 16-bit
+// binary, one right after the other. This is very fast (as fast as possible
+// without compression or data loss), and easy to parse, but impossible to read
+// for a human.
+//#define OUTPUT_BINARY_ACCELGYRO
+
+
+#define LED_PIN D7
+bool blinkState = false;
+
+// I2Cdev and MPU6050 must be installed as libraries, or else the .cpp/.h files
+// for both classes must be in the include path of your project
+
+void mpu_raw_setup() {
+    // join I2C bus (I2Cdev library doesn't do this automatically)
+        Wire.begin();
+
+
+    // initialize serial communication
+    // (38400 chosen because it works as well at 8MHz as it does at 16MHz, but
+    // it's really up to you depending on your project)
+    Serial.begin(38400);
+
+    // initialize device
+    Serial.println("Initializing I2C devices...");
+    accelgyro.initialize();
+
+    // verify connection
+    Serial.println("Testing device connections...");
+    Serial.println(accelgyro.testConnection() ? "MPU6050 connection successful" : "MPU6050 connection failed");
+
+    // use the code below to change accel/gyro offset values
+    /*
+    Serial.println("Updating internal sensor offsets...");
+    // -76  -2359   1688    0   0   0
+    Serial.print(accelgyro.getXAccelOffset()); Serial.print("\t"); // -76
+    Serial.print(accelgyro.getYAccelOffset()); Serial.print("\t"); // -2359
+    Serial.print(accelgyro.getZAccelOffset()); Serial.print("\t"); // 1688
+    Serial.print(accelgyro.getXGyroOffset()); Serial.print("\t"); // 0
+    Serial.print(accelgyro.getYGyroOffset()); Serial.print("\t"); // 0
+    Serial.print(accelgyro.getZGyroOffset()); Serial.print("\t"); // 0
+    Serial.print("\n");
+    accelgyro.setXGyroOffset(220);
+    accelgyro.setYGyroOffset(76);
+    accelgyro.setZGyroOffset(-85);
+    Serial.print(accelgyro.getXAccelOffset()); Serial.print("\t"); // -76
+    Serial.print(accelgyro.getYAccelOffset()); Serial.print("\t"); // -2359
+    Serial.print(accelgyro.getZAccelOffset()); Serial.print("\t"); // 1688
+    Serial.print(accelgyro.getXGyroOffset()); Serial.print("\t"); // 0
+    Serial.print(accelgyro.getYGyroOffset()); Serial.print("\t"); // 0
+    Serial.print(accelgyro.getZGyroOffset()); Serial.print("\t"); // 0
+    Serial.print("\n");
+    */
+
+    // configure Arduino LED for
+    pinMode(LED_PIN, OUTPUT);
+}
+
+void mpu_raw_loop() {
+    // read raw accel/gyro measurements from device
+    accelgyro.getMotion6(&ax, &ay, &az, &gx, &gy, &gz);
+
+    // these methods (and a few others) are also available
+    //accelgyro.getAcceleration(&ax, &ay, &az);
+    //accelgyro.getRotation(&gx, &gy, &gz);
+
+    #ifdef OUTPUT_READABLE_ACCELGYRO
+        // display tab-separated accel/gyro x/y/z values
+        Serial.print("a/g:\t");
+        Serial.print(ax); Serial.print("\t");
+        Serial.print(ay); Serial.print("\t");
+        Serial.print(az); Serial.print("\t");
+        Serial.print(gx); Serial.print("\t");
+        Serial.print(gy); Serial.print("\t");
+        Serial.println(gz);
+    #endif
+
+    #ifdef OUTPUT_BINARY_ACCELGYRO
+        Serial.write((uint8_t)(ax >> 8)); Serial.write((uint8_t)(ax & 0xFF));
+        Serial.write((uint8_t)(ay >> 8)); Serial.write((uint8_t)(ay & 0xFF));
+        Serial.write((uint8_t)(az >> 8)); Serial.write((uint8_t)(az & 0xFF));
+        Serial.write((uint8_t)(gx >> 8)); Serial.write((uint8_t)(gx & 0xFF));
+        Serial.write((uint8_t)(gy >> 8)); Serial.write((uint8_t)(gy & 0xFF));
+        Serial.write((uint8_t)(gz >> 8)); Serial.write((uint8_t)(gz & 0xFF));
+    #endif
+
+    // blink LED to indicate activity
+    blinkState = !blinkState;
+    digitalWrite(LED_PIN, blinkState);
+}

sparkcore/mpu.h

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+// MPU test routines.
+//
+// skylar - rather than two programs, I've renamed the test routines
+//  so we can call and run them as necessary.
+
+
+void mpu_raw_setup();
+void mpu_raw_loop();
+void mpu_dmp_setup();
+void mpu_dmp_loop();

sparkcore/mpu_test.ino

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+#include "mpu.h"
+
+void setup() {
+  mpu_dmp_setup();
+}
+
+void loop() {
+  mpu_dmp_loop();
+}