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T-Display-S3-main/lib/DabbleESP32/examples/08.Phone Sensor/Magnetometer/Magnetometer.ino

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+  /*
+   Magnetometer block helps in accessing your mobile's magnetometer.
+
+   You can reduce the size of library compiled by enabling only those modules that you want
+   to use. For this first define CUSTOM_SETTINGS followed by defining INCLUDE_modulename.
+
+   Explore more on: https://thestempedia.com/docs/dabble/phone-sensors-module/
+*/
+#define CUSTOM_SETTINGS
+#define INCLUDE_SENSOR_MODULE
+#include <DabbleESP32.h>
+
+
+void setup() {
+  Serial.begin(115200);    // make sure your Serial Monitor is also set at this baud rate.
+  Dabble.begin("MyEsp32");  //set bluetooth name of your device
+}
+
+void loop() {
+  Dabble.processInput();             //this function is used to refresh data obtained from smartphone.Hence calling this function is mandatory in order to get data properly from your mobile.
+  print_Magnetometer_data();
+}
+
+void print_Magnetometer_data()
+{
+  Serial.print("X-axis: ");
+  Serial.print(Sensor.getMagnetometerXaxis(), 7);
+  Serial.print('\t');
+  Serial.print("Y-axis: ");
+  Serial.print(Sensor.getMagnetometerYaxis(), 7);
+  Serial.print('\t');
+  Serial.print("Z-axis: ");
+  Serial.println(Sensor.getMagnetometerZaxis(), 7);
+  Serial.println();
+}