myConstants.h

00001 #pragma once
00002 
00003 /* Math Constants */
00004 #define NEARLY_ZERO         0.000000001f
00005 #define ZERO_TOLERANCE      0.000001f
00006 #define RAD_TO_DEG          57.2957795f             // 180 / π
00007 #define DEG_TO_RAD          0.0174532925f           // π / 180
00008 
00009 /* Accelerometer */
00010 #define ACC_LSB_TO_G        0.0000610351562f        // g/LSB (1/2^14
00011 #define G_TO_MPSS           9.8f                    // (m/s^2)/g
00012 
00013 /* Gyro Sensor */
00014 //#define GYRO_LSB_TO_DEG     0.0304878048f           // deg/LSB (1/32.8
00015 #define GYRO_LSB_TO_DEG     0.0152671755f           // deg/LSB (1/65.5
00016 //#define GYRO_LSB_TO_DEG     0.00763358778f          // deg/LSB (1/131
00017 
00018 /* Pressure Sensor */
00019 #define PRES_LSB_TO_HPA     0.000244140625f         // hPa/LSB (1/4096
00020 
00021 inline float TempLsbToDeg(short int temp) {
00022     return (42.5f + (float)temp * 0.00208333333f);  // degree_C = 42.5 + temp / 480;
00023 }
00024 
00025 /* GPS */
00026 #define GPS_SQ_E                0.00669437999f      // （第一離心率）^2
00027 #define GPS_A                   6378137.0f          // 長半径(赤道半径)(m)
00028 #define GPS_B                   6356752.3f          // 短半径(極半径)(m)
00029 
00030 /* Geomagnetic Sensor */
00031 #define MAG_LSB_TO_GAUSS    0.00092f                // Gauss/LSB
00032 #define MAG_MAGNITUDE       0.46f                   // Magnitude of GeoMagnetism (Gauss)
00033 #define MAG_SIN             -0.754709580f           // Sin-Value of Inclination
00034 #define MAG_DECLINATION     7.5f                    // declination (deg)
00035 
00036 /* ADC */
00037 #define ADC_LSB_TO_V        0.000050354f            // 3.3(V)/65535(LSB)