Diff: MPU9250.h

Revision:

0:98a0cccbc509

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MPU9250.h	Tue Jul 05 07:09:43 2016 +0000
@@ -0,0 +1,237 @@
+#include "mbed.h"
+#include "math.h"
+ 
+// See also MPU-9250 Register Map and Descriptions, Revision 4.0, RM-MPU-9250A-00, Rev. 1.4, 9/9/2013 for registers not listed in 
+// above document; the MPU9250 and MPU9150 are virtually identical but the latter has a different register map
+//
+//Magnetometer Registers
+#define AK8963_ADDRESS   0x0C<<1
+#define WHO_AM_I_AK8963  0x00 // should return 0x48
+#define INFO             0x01
+#define AK8963_ST1       0x02  // data ready status bit 0
+#define AK8963_XOUT_L    0x03  // data
+#define AK8963_XOUT_H    0x04
+#define AK8963_YOUT_L    0x05
+#define AK8963_YOUT_H    0x06
+#define AK8963_ZOUT_L    0x07
+#define AK8963_ZOUT_H    0x08
+#define AK8963_ST2       0x09  // Data overflow bit 3 and data read error status bit 2
+#define AK8963_CNTL      0x0A  // Power down (0000), single-measurement (0001), self-test (1000) and Fuse ROM (1111) modes on bits 3:0
+#define AK8963_ASTC      0x0C  // Self test control
+#define AK8963_I2CDIS    0x0F  // I2C disable
+#define AK8963_ASAX      0x10  // Fuse ROM x-axis sensitivity adjustment value
+#define AK8963_ASAY      0x11  // Fuse ROM y-axis sensitivity adjustment value
+#define AK8963_ASAZ      0x12  // Fuse ROM z-axis sensitivity adjustment value
+
+#define SELF_TEST_X_GYRO 0x00                  
+#define SELF_TEST_Y_GYRO 0x01                                                                          
+#define SELF_TEST_Z_GYRO 0x02
+
+/*#define X_FINE_GAIN      0x03 // [7:0] fine gain
+#define Y_FINE_GAIN      0x04
+#define Z_FINE_GAIN      0x05
+#define XA_OFFSET_H      0x06 // User-defined trim values for accelerometer
+#define XA_OFFSET_L_TC   0x07
+#define YA_OFFSET_H      0x08
+#define YA_OFFSET_L_TC   0x09
+#define ZA_OFFSET_H      0x0A
+#define ZA_OFFSET_L_TC   0x0B */
+
+#define SELF_TEST_X_ACCEL 0x0D
+#define SELF_TEST_Y_ACCEL 0x0E    
+#define SELF_TEST_Z_ACCEL 0x0F
+
+#define SELF_TEST_A      0x10
+
+#define XG_OFFSET_H      0x13  // User-defined trim values for gyroscope
+#define XG_OFFSET_L      0x14
+#define YG_OFFSET_H      0x15
+#define YG_OFFSET_L      0x16
+#define ZG_OFFSET_H      0x17
+#define ZG_OFFSET_L      0x18
+#define SMPLRT_DIV       0x19
+#define CONFIG           0x1A
+#define GYRO_CONFIG      0x1B
+#define ACCEL_CONFIG     0x1C
+#define ACCEL_CONFIG2    0x1D
+#define LP_ACCEL_ODR     0x1E   
+#define WOM_THR          0x1F   
+
+#define MOT_DUR          0x20  // Duration counter threshold for motion interrupt generation, 1 kHz rate, LSB = 1 ms
+#define ZMOT_THR         0x21  // Zero-motion detection threshold bits [7:0]
+#define ZRMOT_DUR        0x22  // Duration counter threshold for zero motion interrupt generation, 16 Hz rate, LSB = 64 ms
+
+#define FIFO_EN          0x23
+#define I2C_MST_CTRL     0x24   
+#define I2C_SLV0_ADDR    0x25
+#define I2C_SLV0_REG     0x26
+#define I2C_SLV0_CTRL    0x27
+#define I2C_SLV1_ADDR    0x28
+#define I2C_SLV1_REG     0x29
+#define I2C_SLV1_CTRL    0x2A
+#define I2C_SLV2_ADDR    0x2B
+#define I2C_SLV2_REG     0x2C
+#define I2C_SLV2_CTRL    0x2D
+#define I2C_SLV3_ADDR    0x2E
+#define I2C_SLV3_REG     0x2F
+#define I2C_SLV3_CTRL    0x30
+#define I2C_SLV4_ADDR    0x31
+#define I2C_SLV4_REG     0x32
+#define I2C_SLV4_DO      0x33
+#define I2C_SLV4_CTRL    0x34
+#define I2C_SLV4_DI      0x35
+#define I2C_MST_STATUS   0x36
+#define INT_PIN_CFG      0x37
+#define INT_ENABLE       0x38
+#define DMP_INT_STATUS   0x39  // Check DMP interrupt
+#define INT_STATUS       0x3A
+#define ACCEL_XOUT_H     0x3B
+#define ACCEL_XOUT_L     0x3C
+#define ACCEL_YOUT_H     0x3D
+#define ACCEL_YOUT_L     0x3E
+#define ACCEL_ZOUT_H     0x3F
+#define ACCEL_ZOUT_L     0x40
+#define TEMP_OUT_H       0x41
+#define TEMP_OUT_L       0x42
+#define GYRO_XOUT_H      0x43
+#define GYRO_XOUT_L      0x44
+#define GYRO_YOUT_H      0x45
+#define GYRO_YOUT_L      0x46
+#define GYRO_ZOUT_H      0x47
+#define GYRO_ZOUT_L      0x48
+#define EXT_SENS_DATA_00 0x49
+#define EXT_SENS_DATA_01 0x4A
+#define EXT_SENS_DATA_02 0x4B
+#define EXT_SENS_DATA_03 0x4C
+#define EXT_SENS_DATA_04 0x4D
+#define EXT_SENS_DATA_05 0x4E
+#define EXT_SENS_DATA_06 0x4F
+#define EXT_SENS_DATA_07 0x50
+#define EXT_SENS_DATA_08 0x51
+#define EXT_SENS_DATA_09 0x52
+#define EXT_SENS_DATA_10 0x53
+#define EXT_SENS_DATA_11 0x54
+#define EXT_SENS_DATA_12 0x55
+#define EXT_SENS_DATA_13 0x56
+#define EXT_SENS_DATA_14 0x57
+#define EXT_SENS_DATA_15 0x58
+#define EXT_SENS_DATA_16 0x59
+#define EXT_SENS_DATA_17 0x5A
+#define EXT_SENS_DATA_18 0x5B
+#define EXT_SENS_DATA_19 0x5C
+#define EXT_SENS_DATA_20 0x5D
+#define EXT_SENS_DATA_21 0x5E
+#define EXT_SENS_DATA_22 0x5F
+#define EXT_SENS_DATA_23 0x60
+#define MOT_DETECT_STATUS 0x61
+#define I2C_SLV0_DO      0x63
+#define I2C_SLV1_DO      0x64
+#define I2C_SLV2_DO      0x65
+#define I2C_SLV3_DO      0x66
+#define I2C_MST_DELAY_CTRL 0x67
+#define SIGNAL_PATH_RESET  0x68
+#define MOT_DETECT_CTRL  0x69
+#define USER_CTRL        0x6A  // Bit 7 enable DMP, bit 3 reset DMP
+#define PWR_MGMT_1       0x6B // Device defaults to the SLEEP mode
+#define PWR_MGMT_2       0x6C
+#define DMP_BANK         0x6D  // Activates a specific bank in the DMP
+#define DMP_RW_PNT       0x6E  // Set read/write pointer to a specific start address in specified DMP bank
+#define DMP_REG          0x6F  // Register in DMP from which to read or to which to write
+#define DMP_REG_1        0x70
+#define DMP_REG_2        0x71 
+#define FIFO_COUNTH      0x72
+#define FIFO_COUNTL      0x73
+#define FIFO_R_W         0x74
+#define WHO_AM_I_MPU9250 0x75 // Should return 0x71
+#define XA_OFFSET_H      0x77
+#define XA_OFFSET_L      0x78
+#define YA_OFFSET_H      0x7A
+#define YA_OFFSET_L      0x7B
+#define ZA_OFFSET_H      0x7D
+#define ZA_OFFSET_L      0x7E
+
+#define PI 3.14159265358979323846f
+// Using the MSENSR-9250 breakout board, ADO is set to 0 
+// Seven-bit device address is 110100 for ADO = 0 and 110101 for ADO = 1
+//mbed uses the eight-bit device address, so shift seven-bit addresses left by one!
+#define ADO 0
+#if ADO
+#define MPU9250_ADDRESS 0x69<<1  // Device address when ADO = 1
+#else
+#define MPU9250_ADDRESS 0x68<<1  // Device address when ADO = 0
+#endif  
+
+// Set initial input parameters
+enum Ascale {
+  AFS_2G = 0,
+  AFS_4G,
+  AFS_8G,
+  AFS_16G
+};
+
+enum Gscale {
+  GFS_250DPS = 0,
+  GFS_500DPS,
+  GFS_1000DPS,
+  GFS_2000DPS
+};
+
+enum Mscale {
+  MFS_14BITS = 0, // 0.6 mG per LSB
+  MFS_16BITS      // 0.15 mG per LSB
+};
+
+class MPU9250 {
+ 
+    protected:
+ 
+    public:
+       
+         MPU9250(PinName sda, PinName scl);
+         MPU9250(I2C *i2c);
+         ~MPU9250();
+         
+         void writeByte(uint8_t address, uint8_t subAddress, uint8_t data);
+         char readByte(uint8_t address, uint8_t subAddress);
+         void readBytes(uint8_t address, uint8_t subAddress, uint8_t count, uint8_t * dest);
+         void getMres();
+         void getGres();
+         void getAres();
+         void readAccelData(int16_t * destination);
+         void readGyroData(int16_t * destination);
+         void readMagData(int16_t * destination);
+         int16_t readTempData();
+         void resetMPU9250();
+         void initAK8963(float * destination);
+         void initMPU9250();
+         void calibrateMPU9250(float * dest1, float * dest2);
+         void MPU9250SelfTest(float * destination);
+         void MadgwickQuaternionUpdate(float ax, float ay, float az, float gx, float gy, float gz, float mx, float my, float mz);
+         void MahonyQuaternionUpdate(float ax, float ay, float az, float gx, float gy, float gz, float mx, float my, float mz);
+
+         float SelfTest[6];
+         float gyroBias[3],accelBias[3]; // Bias corrections for gyro and accelerometer
+         float magCalibration[3], magbias[3];  // Factory mag calibration and mag bias
+         
+         uint8_t Ascale;               // AFS_2G, AFS_4G, AFS_8G, AFS_16G
+         uint8_t Gscale;               // GFS_250DPS, GFS_500DPS, GFS_1000DPS, GFS_2000DPS
+         uint8_t Mscale;               // MFS_14BITS or MFS_16BITS, 14-bit or 16-bit magnetometer resolution
+         uint8_t Mmode;                // Either 8 Hz 0x02) or 100 Hz (0x06) magnetometer data ODR  
+         float aRes, gRes, mRes;       // scale resolutions per LSB for the sensors
+         
+         int16_t accelCount[3];  // Stores the 16-bit signed accelerometer sensor output
+         int16_t gyroCount[3];   // Stores the 16-bit signed gyro sensor output
+         int16_t magCount[3];    // Stores the 16-bit signed magnetometer sensor output
+         float q[4];           // vector to hold quaternion
+         
+         float ax, ay, az, gx, gy, gz, mx, my, mz; // variables to hold latest sensor data values 
+         float pitch, yaw, roll;
+         float deltat;                             // integration interval for both filter schemes
+         int lastUpdate, firstUpdate, Now;    // used to calculate integration interval                               
+         int delt_t; // used to control display output rate
+         int count;  // used to control display output rate
+         int16_t tempCount;   // Stores the real internal chip temperature in degrees Celsius
+         float temperature;
+    private:
+         I2C *i2c_; 
+  };
\ No newline at end of file