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HMC5883L_calibrate/HMC5883L_calibrate.ino

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+/*
+  Calibrate HMC5883L. Output for HMC5883L_calibrate_processing.pde
+  Read more: http://www.jarzebski.pl/arduino/czujniki-i-sensory/3-osiowy-magnetometr-hmc5883l.html
+  GIT: https://github.com/jarzebski/Arduino-HMC5883L
+  Web: http://www.jarzebski.pl
+  (c) 2014 by Korneliusz Jarzebski
+*/
+
+#include <Wire.h>
+#include <HMC5883L.h>
+
+HMC5883L compass;
+
+int minX = 0;
+int maxX = 0;
+int minY = 0;
+int maxY = 0;
+int offX = 0;
+int offY = 0;
+
+
+int minZ = 0;
+int maxZ = 0;
+
+void setup()
+{
+  Serial.begin(9600);
+
+  // Initialize Initialize HMC5883L
+  while (!compass.begin())
+  {
+    delay(500);
+  }
+
+  // Set measurement range
+  compass.setRange(HMC5883L_RANGE_1_3GA);
+
+  // Set measurement mode
+  compass.setMeasurementMode(HMC5883L_CONTINOUS);
+
+  // Set data rate
+  compass.setDataRate(HMC5883L_DATARATE_30HZ);
+
+  // Set number of samples averaged
+  compass.setSamples(HMC5883L_SAMPLES_8);
+}
+
+void loop()
+{
+  Vector mag = compass.readRaw();
+
+  // Determine Min / Max values
+  if (mag.XAxis < minX) minX = mag.XAxis;
+  if (mag.XAxis > maxX) maxX = mag.XAxis;
+  if (mag.YAxis < minY) minY = mag.YAxis;
+  if (mag.YAxis > maxY) maxY = mag.YAxis;
+  if (mag.ZAxis < minZ) minZ = mag.ZAxis;
+  if (mag.ZAxis > maxZ) maxZ = mag.ZAxis;
+
+  // Calculate offsets
+  offX = (maxX + minX)/2;
+  offY = (maxY + minY)/2;
+
+//  Serial.print(mag.XAxis);
+//  Serial.print(":");
+//  Serial.print(mag.YAxis);
+//  Serial.print(":");
+  Serial.print(minX);
+  Serial.print(":");
+  Serial.print(maxX);
+  Serial.print(":");
+  Serial.print(minY);
+  Serial.print(":");
+  Serial.print(maxY);
+    Serial.print(":");
+  Serial.print(minZ);  
+  Serial.print(":");
+  Serial.print(maxZ);
+//  Serial.print(":");
+//  Serial.print(offX);
+//  Serial.print(":");
+//  Serial.print(offY);
+  Serial.print("\n");
+}