Merge pull request #1 from sparkfun/fix_angle_calc

Fix Angle Calculations Example 3. Changed data type, fixed logic operation to bitwise, added function to convert int to float, and fixed units in the example to degree.

Author: MadisonC-SparkFun

examples/Example3_AngleCalculations/Example3_AngleCalculations.ino

@@ -53,8 +53,8 @@ void loop()
     float angleCalculation = sensor.getAngleResult();
 
     Serial.print("XYX: ");
-    Serial.print(angleCalculation);
-    Serial.println(" mT");
+    Serial.print(angleCalculation, 4);
+    Serial.println("°");
 
   }
   else

src/SparkFun_TMAG5273_Arduino_Library.cpp

@@ -2644,10 +2644,10 @@ float TMAG5273::getZData()
 /// @return Angle measurement result in degrees (float value)
 float TMAG5273::getAngleResult()
 {
-    int8_t angleLSB = 0;
-    int8_t angleMSB = 0;
+    uint8_t angleLSB = 0;
+    uint8_t angleMSB = 0;
 
-    angleLSB = readRegister(TMAG5273_REG_ANGLE_RESULT_LSB);
+    angleLSB = readRegister(TMAG5273_REG_ANGLE_RESULT_LSB) & 0b11111111;
     angleMSB = readRegister(TMAG5273_REG_ANGLE_RESULT_MSB);
 
     // Variable to hold the full angle MSB and LSB registers
@@ -2663,7 +2663,7 @@ float TMAG5273::getAngleResult()
     angleReg = (angleMSB << 8) | angleLSB;
 
     // Removing the uneeded bits for the fraction value
-    decValue = (angleReg && (0b0000000000001111)) / 16;
+    decValue = float(angleLSB & 0b1111) / 16;
 
     // Shift off the decimal value (last 4 bits)
     angleVal = angleReg >> 4;