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Ardunio mpu6050 dmp 数据通过串口实现与matlab(mac)实时绘图学习过程【2014-9-8】

2014-09-08 16:38 901 查看

Day2

0. Ardunio 端：

今天早上顺丰就把我定的ardunio mega送来了。一时困意全无，翻身起来就开始

第一步自然是写Ardunio 端的程序：

这并不难，尤其是ardunio的社区就有现成的代码的时候，只要认认真真读完，自己再重新写一个合意的十分轻松。

当然为了便于今后的学习，我还是把社区里的代码粘上来较为妥当，自己写的实在是乱的不堪入目

// MPU-6050 Accelerometer + Gyro
// -----------------------------
//
// By arduino.cc user "Krodal".
//
// June 2012
//      first version
// July 2013
//      The 'int' in the union for the x,y,z
//      changed into int16_t to be compatible
//      with Arduino Due.
//
// Open Source / Public Domain
//
// Using Arduino 1.0.1
// It will not work with an older version,
// since Wire.endTransmission() uses a parameter
// to hold or release the I2C bus.
//
// Documentation:
// - The InvenSense documents:
//   - "MPU-6000 and MPU-6050 Product Specification",
//     PS-MPU-6000A.pdf
//   - "MPU-6000 and MPU-6050 Register Map and Descriptions",
//     RM-MPU-6000A.pdf or RS-MPU-6000A.pdf
//   - "MPU-6000/MPU-6050 9-Axis Evaluation Board User Guide"
//     AN-MPU-6000EVB.pdf
//
// The accuracy is 16-bits.
//
// Temperature sensor from -40 to +85 degrees Celsius
//   340 per degrees, -512 at 35 degrees.
//
// At power-up, all registers are zero, except these two:
//      Register 0x6B (PWR_MGMT_2) = 0x40  (I read zero).
//      Register 0x75 (WHO_AM_I)   = 0x68.
//

#include <Wire.h>

// The name of the sensor is "MPU-6050".
// For program code, I omit the '-',
// therefor I use the name "MPU6050....".

// Register names according to the datasheet.
// According to the InvenSense document
// "MPU-6000 and MPU-6050 Register Map
// and Descriptions Revision 3.2", there are no registers
// at 0x02 ... 0x18, but according other information
// the registers in that unknown area are for gain
// and offsets.
//
#define MPU6050_AUX_VDDIO          0x01   // R/W
#define MPU6050_SMPLRT_DIV         0x19   // R/W
#define MPU6050_CONFIG             0x1A   // R/W
#define MPU6050_GYRO_CONFIG        0x1B   // R/W
#define MPU6050_ACCEL_CONFIG       0x1C   // R/W
#define MPU6050_FF_THR             0x1D   // R/W
#define MPU6050_FF_DUR             0x1E   // R/W
#define MPU6050_MOT_THR            0x1F   // R/W
#define MPU6050_MOT_DUR            0x20   // R/W
#define MPU6050_ZRMOT_THR          0x21   // R/W
#define MPU6050_ZRMOT_DUR          0x22   // R/W
#define MPU6050_FIFO_EN            0x23   // R/W
#define MPU6050_I2C_MST_CTRL       0x24   // R/W
#define MPU6050_I2C_SLV0_ADDR      0x25   // R/W
#define MPU6050_I2C_SLV0_REG       0x26   // R/W
#define MPU6050_I2C_SLV0_CTRL      0x27   // R/W
#define MPU6050_I2C_SLV1_ADDR      0x28   // R/W
#define MPU6050_I2C_SLV1_REG       0x29   // R/W
#define MPU6050_I2C_SLV1_CTRL      0x2A   // R/W
#define MPU6050_I2C_SLV2_ADDR      0x2B   // R/W
#define MPU6050_I2C_SLV2_REG       0x2C   // R/W
#define MPU6050_I2C_SLV2_CTRL      0x2D   // R/W
#define MPU6050_I2C_SLV3_ADDR      0x2E   // R/W
#define MPU6050_I2C_SLV3_REG       0x2F   // R/W
#define MPU6050_I2C_SLV3_CTRL      0x30   // R/W
#define MPU6050_I2C_SLV4_ADDR      0x31   // R/W
#define MPU6050_I2C_SLV4_REG       0x32   // R/W
#define MPU6050_I2C_SLV4_DO        0x33   // R/W
#define MPU6050_I2C_SLV4_CTRL      0x34   // R/W
#define MPU6050_I2C_SLV4_DI        0x35   // R
#define MPU6050_I2C_MST_STATUS     0x36   // R
#define MPU6050_INT_PIN_CFG        0x37   // R/W
#define MPU6050_INT_ENABLE         0x38   // R/W
#define MPU6050_INT_STATUS         0x3A   // R
#define MPU6050_ACCEL_XOUT_H       0x3B   // R
#define MPU6050_ACCEL_XOUT_L       0x3C   // R
#define MPU6050_ACCEL_YOUT_H       0x3D   // R
#define MPU6050_ACCEL_YOUT_L       0x3E   // R
#define MPU6050_ACCEL_ZOUT_H       0x3F   // R
#define MPU6050_ACCEL_ZOUT_L       0x40   // R
#define MPU6050_TEMP_OUT_H         0x41   // R
#define MPU6050_TEMP_OUT_L         0x42   // R
#define MPU6050_GYRO_XOUT_H        0x43   // R
#define MPU6050_GYRO_XOUT_L        0x44   // R
#define MPU6050_GYRO_YOUT_H        0x45   // R
#define MPU6050_GYRO_YOUT_L        0x46   // R
#define MPU6050_GYRO_ZOUT_H        0x47   // R
#define MPU6050_GYRO_ZOUT_L        0x48   // R
#define MPU6050_EXT_SENS_DATA_00   0x49   // R
#define MPU6050_EXT_SENS_DATA_01   0x4A   // R
#define MPU6050_EXT_SENS_DATA_02   0x4B   // R
#define MPU6050_EXT_SENS_DATA_03   0x4C   // R
#define MPU6050_EXT_SENS_DATA_04   0x4D   // R
#define MPU6050_EXT_SENS_DATA_05   0x4E   // R
#define MPU6050_EXT_SENS_DATA_06   0x4F   // R
#define MPU6050_EXT_SENS_DATA_07   0x50   // R
#define MPU6050_EXT_SENS_DATA_08   0x51   // R
#define MPU6050_EXT_SENS_DATA_09   0x52   // R
#define MPU6050_EXT_SENS_DATA_10   0x53   // R
#define MPU6050_EXT_SENS_DATA_11   0x54   // R
#define MPU6050_EXT_SENS_DATA_12   0x55   // R
#define MPU6050_EXT_SENS_DATA_13   0x56   // R
#define MPU6050_EXT_SENS_DATA_14   0x57   // R
#define MPU6050_EXT_SENS_DATA_15   0x58   // R
#define MPU6050_EXT_SENS_DATA_16   0x59   // R
#define MPU6050_EXT_SENS_DATA_17   0x5A   // R
#define MPU6050_EXT_SENS_DATA_18   0x5B   // R
#define MPU6050_EXT_SENS_DATA_19   0x5C   // R
#define MPU6050_EXT_SENS_DATA_20   0x5D   // R
#define MPU6050_EXT_SENS_DATA_21   0x5E   // R
#define MPU6050_EXT_SENS_DATA_22   0x5F   // R
#define MPU6050_EXT_SENS_DATA_23   0x60   // R
#define MPU6050_MOT_DETECT_STATUS  0x61   // R
#define MPU6050_I2C_SLV0_DO        0x63   // R/W
#define MPU6050_I2C_SLV1_DO        0x64   // R/W
#define MPU6050_I2C_SLV2_DO        0x65   // R/W
#define MPU6050_I2C_SLV3_DO        0x66   // R/W
#define MPU6050_I2C_MST_DELAY_CTRL 0x67   // R/W
#define MPU6050_SIGNAL_PATH_RESET  0x68   // R/W
#define MPU6050_MOT_DETECT_CTRL    0x69   // R/W
#define MPU6050_USER_CTRL          0x6A   // R/W
#define MPU6050_PWR_MGMT_1         0x6B   // R/W
#define MPU6050_PWR_MGMT_2         0x6C   // R/W
#define MPU6050_FIFO_COUNTH        0x72   // R/W
#define MPU6050_FIFO_COUNTL        0x73   // R/W
#define MPU6050_FIFO_R_W           0x74   // R/W
#define MPU6050_WHO_AM_I           0x75   // R

// Defines for the bits, to be able to change
// between bit number and binary definition.
// By using the bit number, programming the sensor
// is like programming the AVR microcontroller.
// But instead of using "(1<<X)", or "_BV(X)",
// the Arduino "bit(X)" is used.
#define MPU6050_D0 0
#define MPU6050_D1 1
#define MPU6050_D2 2
#define MPU6050_D3 3
#define MPU6050_D4 4
#define MPU6050_D5 5
#define MPU6050_D6 6
#define MPU6050_D7 7

// AUX_VDDIO Register
#define MPU6050_AUX_VDDIO MPU6050_D7  // I2C high: 1=VDD, 0=VLOGIC

// CONFIG Register
// DLPF is Digital Low Pass Filter for both gyro and accelerometers.
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_DLPF_CFG0     MPU6050_D0
#define MPU6050_DLPF_CFG1     MPU6050_D1
#define MPU6050_DLPF_CFG2     MPU6050_D2
#define MPU6050_EXT_SYNC_SET0 MPU6050_D3
#define MPU6050_EXT_SYNC_SET1 MPU6050_D4
#define MPU6050_EXT_SYNC_SET2 MPU6050_D5

// Combined definitions for the EXT_SYNC_SET values
#define MPU6050_EXT_SYNC_SET_0 (0)
#define MPU6050_EXT_SYNC_SET_1 (bit(MPU6050_EXT_SYNC_SET0))
#define MPU6050_EXT_SYNC_SET_2 (bit(MPU6050_EXT_SYNC_SET1))
#define MPU6050_EXT_SYNC_SET_3 (bit(MPU6050_EXT_SYNC_SET1)|bit(MPU6050_EXT_SYNC_SET0))
#define MPU6050_EXT_SYNC_SET_4 (bit(MPU6050_EXT_SYNC_SET2))
#define MPU6050_EXT_SYNC_SET_5 (bit(MPU6050_EXT_SYNC_SET2)|bit(MPU6050_EXT_SYNC_SET0))
#define MPU6050_EXT_SYNC_SET_6 (bit(MPU6050_EXT_SYNC_SET2)|bit(MPU6050_EXT_SYNC_SET1))
#define MPU6050_EXT_SYNC_SET_7 (bit(MPU6050_EXT_SYNC_SET2)|bit(MPU6050_EXT_SYNC_SET1)|bit(MPU6050_EXT_SYNC_SET0))

// Alternative names for the combined definitions.
#define MPU6050_EXT_SYNC_DISABLED     MPU6050_EXT_SYNC_SET_0
#define MPU6050_EXT_SYNC_TEMP_OUT_L   MPU6050_EXT_SYNC_SET_1
#define MPU6050_EXT_SYNC_GYRO_XOUT_L  MPU6050_EXT_SYNC_SET_2
#define MPU6050_EXT_SYNC_GYRO_YOUT_L  MPU6050_EXT_SYNC_SET_3
#define MPU6050_EXT_SYNC_GYRO_ZOUT_L  MPU6050_EXT_SYNC_SET_4
#define MPU6050_EXT_SYNC_ACCEL_XOUT_L MPU6050_EXT_SYNC_SET_5
#define MPU6050_EXT_SYNC_ACCEL_YOUT_L MPU6050_EXT_SYNC_SET_6
#define MPU6050_EXT_SYNC_ACCEL_ZOUT_L MPU6050_EXT_SYNC_SET_7

// Combined definitions for the DLPF_CFG values
#define MPU6050_DLPF_CFG_0 (0)
#define MPU6050_DLPF_CFG_1 (bit(MPU6050_DLPF_CFG0))
#define MPU6050_DLPF_CFG_2 (bit(MPU6050_DLPF_CFG1))
#define MPU6050_DLPF_CFG_3 (bit(MPU6050_DLPF_CFG1)|bit(MPU6050_DLPF_CFG0))
#define MPU6050_DLPF_CFG_4 (bit(MPU6050_DLPF_CFG2))
#define MPU6050_DLPF_CFG_5 (bit(MPU6050_DLPF_CFG2)|bit(MPU6050_DLPF_CFG0))
#define MPU6050_DLPF_CFG_6 (bit(MPU6050_DLPF_CFG2)|bit(MPU6050_DLPF_CFG1))
#define MPU6050_DLPF_CFG_7 (bit(MPU6050_DLPF_CFG2)|bit(MPU6050_DLPF_CFG1)|bit(MPU6050_DLPF_CFG0))

// Alternative names for the combined definitions
// This name uses the bandwidth (Hz) for the accelometer,
// for the gyro the bandwidth is almost the same.
#define MPU6050_DLPF_260HZ    MPU6050_DLPF_CFG_0
#define MPU6050_DLPF_184HZ    MPU6050_DLPF_CFG_1
#define MPU6050_DLPF_94HZ     MPU6050_DLPF_CFG_2
#define MPU6050_DLPF_44HZ     MPU6050_DLPF_CFG_3
#define MPU6050_DLPF_21HZ     MPU6050_DLPF_CFG_4
#define MPU6050_DLPF_10HZ     MPU6050_DLPF_CFG_5
#define MPU6050_DLPF_5HZ      MPU6050_DLPF_CFG_6
#define MPU6050_DLPF_RESERVED MPU6050_DLPF_CFG_7

// GYRO_CONFIG Register
// The XG_ST, YG_ST, ZG_ST are bits for selftest.
// The FS_SEL sets the range for the gyro.
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_FS_SEL0 MPU6050_D3
#define MPU6050_FS_SEL1 MPU6050_D4
#define MPU6050_ZG_ST   MPU6050_D5
#define MPU6050_YG_ST   MPU6050_D6
#define MPU6050_XG_ST   MPU6050_D7

// Combined definitions for the FS_SEL values
#define MPU6050_FS_SEL_0 (0)
#define MPU6050_FS_SEL_1 (bit(MPU6050_FS_SEL0))
#define MPU6050_FS_SEL_2 (bit(MPU6050_FS_SEL1))
#define MPU6050_FS_SEL_3 (bit(MPU6050_FS_SEL1)|bit(MPU6050_FS_SEL0))

// Alternative names for the combined definitions
// The name uses the range in degrees per second.
#define MPU6050_FS_SEL_250  MPU6050_FS_SEL_0
#define MPU6050_FS_SEL_500  MPU6050_FS_SEL_1
#define MPU6050_FS_SEL_1000 MPU6050_FS_SEL_2
#define MPU6050_FS_SEL_2000 MPU6050_FS_SEL_3

// ACCEL_CONFIG Register
// The XA_ST, YA_ST, ZA_ST are bits for selftest.
// The AFS_SEL sets the range for the accelerometer.
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_ACCEL_HPF0 MPU6050_D0
#define MPU6050_ACCEL_HPF1 MPU6050_D1
#define MPU6050_ACCEL_HPF2 MPU6050_D2
#define MPU6050_AFS_SEL0   MPU6050_D3
#define MPU6050_AFS_SEL1   MPU6050_D4
#define MPU6050_ZA_ST      MPU6050_D5
#define MPU6050_YA_ST      MPU6050_D6
#define MPU6050_XA_ST      MPU6050_D7

// Combined definitions for the ACCEL_HPF values
#define MPU6050_ACCEL_HPF_0 (0)
#define MPU6050_ACCEL_HPF_1 (bit(MPU6050_ACCEL_HPF0))
#define MPU6050_ACCEL_HPF_2 (bit(MPU6050_ACCEL_HPF1))
#define MPU6050_ACCEL_HPF_3 (bit(MPU6050_ACCEL_HPF1)|bit(MPU6050_ACCEL_HPF0))
#define MPU6050_ACCEL_HPF_4 (bit(MPU6050_ACCEL_HPF2))
#define MPU6050_ACCEL_HPF_7 (bit(MPU6050_ACCEL_HPF2)|bit(MPU6050_ACCEL_HPF1)|bit(MPU6050_ACCEL_HPF0))

// Alternative names for the combined definitions
// The name uses the Cut-off frequency.
#define MPU6050_ACCEL_HPF_RESET  MPU6050_ACCEL_HPF_0
#define MPU6050_ACCEL_HPF_5HZ    MPU6050_ACCEL_HPF_1
#define MPU6050_ACCEL_HPF_2_5HZ  MPU6050_ACCEL_HPF_2
#define MPU6050_ACCEL_HPF_1_25HZ MPU6050_ACCEL_HPF_3
#define MPU6050_ACCEL_HPF_0_63HZ MPU6050_ACCEL_HPF_4
#define MPU6050_ACCEL_HPF_HOLD   MPU6050_ACCEL_HPF_7

// Combined definitions for the AFS_SEL values
#define MPU6050_AFS_SEL_0 (0)
#define MPU6050_AFS_SEL_1 (bit(MPU6050_AFS_SEL0))
#define MPU6050_AFS_SEL_2 (bit(MPU6050_AFS_SEL1))
#define MPU6050_AFS_SEL_3 (bit(MPU6050_AFS_SEL1)|bit(MPU6050_AFS_SEL0))

// Alternative names for the combined definitions
// The name uses the full scale range for the accelerometer.
#define MPU6050_AFS_SEL_2G  MPU6050_AFS_SEL_0
#define MPU6050_AFS_SEL_4G  MPU6050_AFS_SEL_1
#define MPU6050_AFS_SEL_8G  MPU6050_AFS_SEL_2
#define MPU6050_AFS_SEL_16G MPU6050_AFS_SEL_3

// FIFO_EN Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_SLV0_FIFO_EN  MPU6050_D0
#define MPU6050_SLV1_FIFO_EN  MPU6050_D1
#define MPU6050_SLV2_FIFO_EN  MPU6050_D2
#define MPU6050_ACCEL_FIFO_EN MPU6050_D3
#define MPU6050_ZG_FIFO_EN    MPU6050_D4
#define MPU6050_YG_FIFO_EN    MPU6050_D5
#define MPU6050_XG_FIFO_EN    MPU6050_D6
#define MPU6050_TEMP_FIFO_EN  MPU6050_D7

// I2C_MST_CTRL Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_I2C_MST_CLK0  MPU6050_D0
#define MPU6050_I2C_MST_CLK1  MPU6050_D1
#define MPU6050_I2C_MST_CLK2  MPU6050_D2
#define MPU6050_I2C_MST_CLK3  MPU6050_D3
#define MPU6050_I2C_MST_P_NSR MPU6050_D4
#define MPU6050_SLV_3_FIFO_EN MPU6050_D5
#define MPU6050_WAIT_FOR_ES   MPU6050_D6
#define MPU6050_MULT_MST_EN   MPU6050_D7

// Combined definitions for the I2C_MST_CLK
#define MPU6050_I2C_MST_CLK_0 (0)
#define MPU6050_I2C_MST_CLK_1  (bit(MPU6050_I2C_MST_CLK0))
#define MPU6050_I2C_MST_CLK_2  (bit(MPU6050_I2C_MST_CLK1))
#define MPU6050_I2C_MST_CLK_3  (bit(MPU6050_I2C_MST_CLK1)|bit(MPU6050_I2C_MST_CLK0))
#define MPU6050_I2C_MST_CLK_4  (bit(MPU6050_I2C_MST_CLK2))
#define MPU6050_I2C_MST_CLK_5  (bit(MPU6050_I2C_MST_CLK2)|bit(MPU6050_I2C_MST_CLK0))
#define MPU6050_I2C_MST_CLK_6  (bit(MPU6050_I2C_MST_CLK2)|bit(MPU6050_I2C_MST_CLK1))
#define MPU6050_I2C_MST_CLK_7  (bit(MPU6050_I2C_MST_CLK2)|bit(MPU6050_I2C_MST_CLK1)|bit(MPU6050_I2C_MST_CLK0))
#define MPU6050_I2C_MST_CLK_8  (bit(MPU6050_I2C_MST_CLK3))
#define MPU6050_I2C_MST_CLK_9  (bit(MPU6050_I2C_MST_CLK3)|bit(MPU6050_I2C_MST_CLK0))
#define MPU6050_I2C_MST_CLK_10 (bit(MPU6050_I2C_MST_CLK3)|bit(MPU6050_I2C_MST_CLK1))
#define MPU6050_I2C_MST_CLK_11 (bit(MPU6050_I2C_MST_CLK3)|bit(MPU6050_I2C_MST_CLK1)|bit(MPU6050_I2C_MST_CLK0))
#define MPU6050_I2C_MST_CLK_12 (bit(MPU6050_I2C_MST_CLK3)|bit(MPU6050_I2C_MST_CLK2))
#define MPU6050_I2C_MST_CLK_13 (bit(MPU6050_I2C_MST_CLK3)|bit(MPU6050_I2C_MST_CLK2)|bit(MPU6050_I2C_MST_CLK0))
#define MPU6050_I2C_MST_CLK_14 (bit(MPU6050_I2C_MST_CLK3)|bit(MPU6050_I2C_MST_CLK2)|bit(MPU6050_I2C_MST_CLK1))
#define MPU6050_I2C_MST_CLK_15 (bit(MPU6050_I2C_MST_CLK3)|bit(MPU6050_I2C_MST_CLK2)|bit(MPU6050_I2C_MST_CLK1)|bit(MPU6050_I2C_MST_CLK0))

// Alternative names for the combined definitions
// The names uses I2C Master Clock Speed in kHz.
#define MPU6050_I2C_MST_CLK_348KHZ MPU6050_I2C_MST_CLK_0
#define MPU6050_I2C_MST_CLK_333KHZ MPU6050_I2C_MST_CLK_1
#define MPU6050_I2C_MST_CLK_320KHZ MPU6050_I2C_MST_CLK_2
#define MPU6050_I2C_MST_CLK_308KHZ MPU6050_I2C_MST_CLK_3
#define MPU6050_I2C_MST_CLK_296KHZ MPU6050_I2C_MST_CLK_4
#define MPU6050_I2C_MST_CLK_286KHZ MPU6050_I2C_MST_CLK_5
#define MPU6050_I2C_MST_CLK_276KHZ MPU6050_I2C_MST_CLK_6
#define MPU6050_I2C_MST_CLK_267KHZ MPU6050_I2C_MST_CLK_7
#define MPU6050_I2C_MST_CLK_258KHZ MPU6050_I2C_MST_CLK_8
#define MPU6050_I2C_MST_CLK_500KHZ MPU6050_I2C_MST_CLK_9
#define MPU6050_I2C_MST_CLK_471KHZ MPU6050_I2C_MST_CLK_10
#define MPU6050_I2C_MST_CLK_444KHZ MPU6050_I2C_MST_CLK_11
#define MPU6050_I2C_MST_CLK_421KHZ MPU6050_I2C_MST_CLK_12
#define MPU6050_I2C_MST_CLK_400KHZ MPU6050_I2C_MST_CLK_13
#define MPU6050_I2C_MST_CLK_381KHZ MPU6050_I2C_MST_CLK_14
#define MPU6050_I2C_MST_CLK_364KHZ MPU6050_I2C_MST_CLK_15

// I2C_SLV0_ADDR Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_I2C_SLV0_RW MPU6050_D7

// I2C_SLV0_CTRL Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_I2C_SLV0_LEN0    MPU6050_D0
#define MPU6050_I2C_SLV0_LEN1    MPU6050_D1
#define MPU6050_I2C_SLV0_LEN2    MPU6050_D2
#define MPU6050_I2C_SLV0_LEN3    MPU6050_D3
#define MPU6050_I2C_SLV0_GRP     MPU6050_D4
#define MPU6050_I2C_SLV0_REG_DIS MPU6050_D5
#define MPU6050_I2C_SLV0_BYTE_SW MPU6050_D6
#define MPU6050_I2C_SLV0_EN      MPU6050_D7

// A mask for the length
#define MPU6050_I2C_SLV0_LEN_MASK 0x0F

// I2C_SLV1_ADDR Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_I2C_SLV1_RW MPU6050_D7

// I2C_SLV1_CTRL Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_I2C_SLV1_LEN0    MPU6050_D0
#define MPU6050_I2C_SLV1_LEN1    MPU6050_D1
#define MPU6050_I2C_SLV1_LEN2    MPU6050_D2
#define MPU6050_I2C_SLV1_LEN3    MPU6050_D3
#define MPU6050_I2C_SLV1_GRP     MPU6050_D4
#define MPU6050_I2C_SLV1_REG_DIS MPU6050_D5
#define MPU6050_I2C_SLV1_BYTE_SW MPU6050_D6
#define MPU6050_I2C_SLV1_EN      MPU6050_D7

// A mask for the length
#define MPU6050_I2C_SLV1_LEN_MASK 0x0F

// I2C_SLV2_ADDR Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_I2C_SLV2_RW MPU6050_D7

// I2C_SLV2_CTRL Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_I2C_SLV2_LEN0    MPU6050_D0
#define MPU6050_I2C_SLV2_LEN1    MPU6050_D1
#define MPU6050_I2C_SLV2_LEN2    MPU6050_D2
#define MPU6050_I2C_SLV2_LEN3    MPU6050_D3
#define MPU6050_I2C_SLV2_GRP     MPU6050_D4
#define MPU6050_I2C_SLV2_REG_DIS MPU6050_D5
#define MPU6050_I2C_SLV2_BYTE_SW MPU6050_D6
#define MPU6050_I2C_SLV2_EN      MPU6050_D7

// A mask for the length
#define MPU6050_I2C_SLV2_LEN_MASK 0x0F

// I2C_SLV3_ADDR Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_I2C_SLV3_RW MPU6050_D7

// I2C_SLV3_CTRL Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_I2C_SLV3_LEN0    MPU6050_D0
#define MPU6050_I2C_SLV3_LEN1    MPU6050_D1
#define MPU6050_I2C_SLV3_LEN2    MPU6050_D2
#define MPU6050_I2C_SLV3_LEN3    MPU6050_D3
#define MPU6050_I2C_SLV3_GRP     MPU6050_D4
#define MPU6050_I2C_SLV3_REG_DIS MPU6050_D5
#define MPU6050_I2C_SLV3_BYTE_SW MPU6050_D6
#define MPU6050_I2C_SLV3_EN      MPU6050_D7

// A mask for the length
#define MPU6050_I2C_SLV3_LEN_MASK 0x0F

// I2C_SLV4_ADDR Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_I2C_SLV4_RW MPU6050_D7

// I2C_SLV4_CTRL Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_I2C_MST_DLY0     MPU6050_D0
#define MPU6050_I2C_MST_DLY1     MPU6050_D1
#define MPU6050_I2C_MST_DLY2     MPU6050_D2
#define MPU6050_I2C_MST_DLY3     MPU6050_D3
#define MPU6050_I2C_MST_DLY4     MPU6050_D4
#define MPU6050_I2C_SLV4_REG_DIS MPU6050_D5
#define MPU6050_I2C_SLV4_INT_EN  MPU6050_D6
#define MPU6050_I2C_SLV4_EN      MPU6050_D7

// A mask for the delay
#define MPU6050_I2C_MST_DLY_MASK 0x1F

// I2C_MST_STATUS Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_I2C_SLV0_NACK MPU6050_D0
#define MPU6050_I2C_SLV1_NACK MPU6050_D1
#define MPU6050_I2C_SLV2_NACK MPU6050_D2
#define MPU6050_I2C_SLV3_NACK MPU6050_D3
#define MPU6050_I2C_SLV4_NACK MPU6050_D4
#define MPU6050_I2C_LOST_ARB  MPU6050_D5
#define MPU6050_I2C_SLV4_DONE MPU6050_D6
#define MPU6050_PASS_THROUGH  MPU6050_D7

// I2C_PIN_CFG Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_CLKOUT_EN       MPU6050_D0
#define MPU6050_I2C_BYPASS_EN   MPU6050_D1
#define MPU6050_FSYNC_INT_EN    MPU6050_D2
#define MPU6050_FSYNC_INT_LEVEL MPU6050_D3
#define MPU6050_INT_RD_CLEAR    MPU6050_D4
#define MPU6050_LATCH_INT_EN    MPU6050_D5
#define MPU6050_INT_OPEN        MPU6050_D6
#define MPU6050_INT_LEVEL       MPU6050_D7

// INT_ENABLE Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_DATA_RDY_EN    MPU6050_D0
#define MPU6050_I2C_MST_INT_EN MPU6050_D3
#define MPU6050_FIFO_OFLOW_EN  MPU6050_D4
#define MPU6050_ZMOT_EN        MPU6050_D5
#define MPU6050_MOT_EN         MPU6050_D6
#define MPU6050_FF_EN          MPU6050_D7

// INT_STATUS Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_DATA_RDY_INT   MPU6050_D0
#define MPU6050_I2C_MST_INT    MPU6050_D3
#define MPU6050_FIFO_OFLOW_INT MPU6050_D4
#define MPU6050_ZMOT_INT       MPU6050_D5
#define MPU6050_MOT_INT        MPU6050_D6
#define MPU6050_FF_INT         MPU6050_D7

// MOT_DETECT_STATUS Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_MOT_ZRMOT MPU6050_D0
#define MPU6050_MOT_ZPOS  MPU6050_D2
#define MPU6050_MOT_ZNEG  MPU6050_D3
#define MPU6050_MOT_YPOS  MPU6050_D4
#define MPU6050_MOT_YNEG  MPU6050_D5
#define MPU6050_MOT_XPOS  MPU6050_D6
#define MPU6050_MOT_XNEG  MPU6050_D7

// IC2_MST_DELAY_CTRL Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_I2C_SLV0_DLY_EN MPU6050_D0
#define MPU6050_I2C_SLV1_DLY_EN MPU6050_D1
#define MPU6050_I2C_SLV2_DLY_EN MPU6050_D2
#define MPU6050_I2C_SLV3_DLY_EN MPU6050_D3
#define MPU6050_I2C_SLV4_DLY_EN MPU6050_D4
#define MPU6050_DELAY_ES_SHADOW MPU6050_D7

// SIGNAL_PATH_RESET Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_TEMP_RESET  MPU6050_D0
#define MPU6050_ACCEL_RESET MPU6050_D1
#define MPU6050_GYRO_RESET  MPU6050_D2

// MOT_DETECT_CTRL Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_MOT_COUNT0      MPU6050_D0
#define MPU6050_MOT_COUNT1      MPU6050_D1
#define MPU6050_FF_COUNT0       MPU6050_D2
#define MPU6050_FF_COUNT1       MPU6050_D3
#define MPU6050_ACCEL_ON_DELAY0 MPU6050_D4
#define MPU6050_ACCEL_ON_DELAY1 MPU6050_D5

// Combined definitions for the MOT_COUNT
#define MPU6050_MOT_COUNT_0 (0)
#define MPU6050_MOT_COUNT_1 (bit(MPU6050_MOT_COUNT0))
#define MPU6050_MOT_COUNT_2 (bit(MPU6050_MOT_COUNT1))
#define MPU6050_MOT_COUNT_3 (bit(MPU6050_MOT_COUNT1)|bit(MPU6050_MOT_COUNT0))

// Alternative names for the combined definitions
#define MPU6050_MOT_COUNT_RESET MPU6050_MOT_COUNT_0

// Combined definitions for the FF_COUNT
#define MPU6050_FF_COUNT_0 (0)
#define MPU6050_FF_COUNT_1 (bit(MPU6050_FF_COUNT0))
#define MPU6050_FF_COUNT_2 (bit(MPU6050_FF_COUNT1))
#define MPU6050_FF_COUNT_3 (bit(MPU6050_FF_COUNT1)|bit(MPU6050_FF_COUNT0))

// Alternative names for the combined definitions
#define MPU6050_FF_COUNT_RESET MPU6050_FF_COUNT_0

// Combined definitions for the ACCEL_ON_DELAY
#define MPU6050_ACCEL_ON_DELAY_0 (0)
#define MPU6050_ACCEL_ON_DELAY_1 (bit(MPU6050_ACCEL_ON_DELAY0))
#define MPU6050_ACCEL_ON_DELAY_2 (bit(MPU6050_ACCEL_ON_DELAY1))
#define MPU6050_ACCEL_ON_DELAY_3 (bit(MPU6050_ACCEL_ON_DELAY1)|bit(MPU6050_ACCEL_ON_DELAY0))

// Alternative names for the ACCEL_ON_DELAY
#define MPU6050_ACCEL_ON_DELAY_0MS MPU6050_ACCEL_ON_DELAY_0
#define MPU6050_ACCEL_ON_DELAY_1MS MPU6050_ACCEL_ON_DELAY_1
#define MPU6050_ACCEL_ON_DELAY_2MS MPU6050_ACCEL_ON_DELAY_2
#define MPU6050_ACCEL_ON_DELAY_3MS MPU6050_ACCEL_ON_DELAY_3

// USER_CTRL Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_SIG_COND_RESET MPU6050_D0
#define MPU6050_I2C_MST_RESET  MPU6050_D1
#define MPU6050_FIFO_RESET     MPU6050_D2
#define MPU6050_I2C_IF_DIS     MPU6050_D4   // must be 0 for MPU-6050
#define MPU6050_I2C_MST_EN     MPU6050_D5
#define MPU6050_FIFO_EN        MPU6050_D6

// PWR_MGMT_1 Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_CLKSEL0      MPU6050_D0
#define MPU6050_CLKSEL1      MPU6050_D1
#define MPU6050_CLKSEL2      MPU6050_D2
#define MPU6050_TEMP_DIS     MPU6050_D3    // 1: disable temperature sensor
#define MPU6050_CYCLE        MPU6050_D5    // 1: sample and sleep
#define MPU6050_SLEEP        MPU6050_D6    // 1: sleep mode
#define MPU6050_DEVICE_RESET MPU6050_D7    // 1: reset to default values

// Combined definitions for the CLKSEL
#define MPU6050_CLKSEL_0 (0)
#define MPU6050_CLKSEL_1 (bit(MPU6050_CLKSEL0))
#define MPU6050_CLKSEL_2 (bit(MPU6050_CLKSEL1))
#define MPU6050_CLKSEL_3 (bit(MPU6050_CLKSEL1)|bit(MPU6050_CLKSEL0))
#define MPU6050_CLKSEL_4 (bit(MPU6050_CLKSEL2))
#define MPU6050_CLKSEL_5 (bit(MPU6050_CLKSEL2)|bit(MPU6050_CLKSEL0))
#define MPU6050_CLKSEL_6 (bit(MPU6050_CLKSEL2)|bit(MPU6050_CLKSEL1))
#define MPU6050_CLKSEL_7 (bit(MPU6050_CLKSEL2)|bit(MPU6050_CLKSEL1)|bit(MPU6050_CLKSEL0))

// Alternative names for the combined definitions
#define MPU6050_CLKSEL_INTERNAL    MPU6050_CLKSEL_0
#define MPU6050_CLKSEL_X           MPU6050_CLKSEL_1
#define MPU6050_CLKSEL_Y           MPU6050_CLKSEL_2
#define MPU6050_CLKSEL_Z           MPU6050_CLKSEL_3
#define MPU6050_CLKSEL_EXT_32KHZ   MPU6050_CLKSEL_4
#define MPU6050_CLKSEL_EXT_19_2MHZ MPU6050_CLKSEL_5
#define MPU6050_CLKSEL_RESERVED    MPU6050_CLKSEL_6
#define MPU6050_CLKSEL_STOP        MPU6050_CLKSEL_7

// PWR_MGMT_2 Register
// These are the names for the bits.
// Use these only with the bit() macro.
#define MPU6050_STBY_ZG       MPU6050_D0
#define MPU6050_STBY_YG       MPU6050_D1
#define MPU6050_STBY_XG       MPU6050_D2
#define MPU6050_STBY_ZA       MPU6050_D3
#define MPU6050_STBY_YA       MPU6050_D4
#define MPU6050_STBY_XA       MPU6050_D5
#define MPU6050_LP_WAKE_CTRL0 MPU6050_D6
#define MPU6050_LP_WAKE_CTRL1 MPU6050_D7

// Combined definitions for the LP_WAKE_CTRL
#define MPU6050_LP_WAKE_CTRL_0 (0)
#define MPU6050_LP_WAKE_CTRL_1 (bit(MPU6050_LP_WAKE_CTRL0))
#define MPU6050_LP_WAKE_CTRL_2 (bit(MPU6050_LP_WAKE_CTRL1))
#define MPU6050_LP_WAKE_CTRL_3 (bit(MPU6050_LP_WAKE_CTRL1)|bit(MPU6050_LP_WAKE_CTRL0))

// Alternative names for the combined definitions
// The names uses the Wake-up Frequency.
#define MPU6050_LP_WAKE_1_25HZ MPU6050_LP_WAKE_CTRL_0
#define MPU6050_LP_WAKE_2_5HZ  MPU6050_LP_WAKE_CTRL_1
#define MPU6050_LP_WAKE_5HZ    MPU6050_LP_WAKE_CTRL_2
#define MPU6050_LP_WAKE_10HZ   MPU6050_LP_WAKE_CTRL_3

// Default I2C address for the MPU-6050 is 0x68.
// But only if the AD0 pin is low.
// Some sensor boards have AD0 high, and the
// I2C address thus becomes 0x69.
#define MPU6050_I2C_ADDRESS 0x68

// Declaring an union for the registers and the axis values.
// The byte order does not match the byte order of
// the compiler and AVR chip.
// The AVR chip (on the Arduino board) has the Low Byte
// at the lower address.
// But the MPU-6050 has a different order: High Byte at
// lower address, so that has to be corrected.
// The register part "reg" is only used internally,
// and are swapped in code.
typedef union accel_t_gyro_union
{
struct
{
uint8_t x_accel_h;
uint8_t x_accel_l;
uint8_t y_accel_h;
uint8_t y_accel_l;
uint8_t z_accel_h;
uint8_t z_accel_l;
uint8_t t_h;
uint8_t t_l;
uint8_t x_gyro_h;
uint8_t x_gyro_l;
uint8_t y_gyro_h;
uint8_t y_gyro_l;
uint8_t z_gyro_h;
uint8_t z_gyro_l;
} reg;
struct
{
int16_t x_accel;
int16_t y_accel;
int16_t z_accel;
int16_t temperature;
int16_t x_gyro;
int16_t y_gyro;
int16_t z_gyro;
} value;
};

void setup()
{
int error;
uint8_t c;

Serial.begin(9600);
Serial.println(F("InvenSense MPU-6050"));
Serial.println(F("June 2012"));

// Initialize the 'Wire' class for the I2C-bus.
Wire.begin();

// default at power-up:
//    Gyro at 250 degrees second
//    Acceleration at 2g
//    Clock source at internal 8MHz
//    The device is in sleep mode.
//

error = MPU6050_read (MPU6050_WHO_AM_I, &c, 1);
Serial.print(F("WHO_AM_I : "));
Serial.print(c,HEX);
Serial.print(F(", error = "));
Serial.println(error,DEC);

// According to the datasheet, the 'sleep' bit
// should read a '1'.
// That bit has to be cleared, since the sensor
// is in sleep mode at power-up.
error = MPU6050_read (MPU6050_PWR_MGMT_1, &c, 1);
Serial.print(F("PWR_MGMT_1 : "));
Serial.print(c,HEX);
Serial.print(F(", error = "));
Serial.println(error,DEC);

// Clear the 'sleep' bit to start the sensor.
MPU6050_write_reg (MPU6050_PWR_MGMT_1, 0);
}

void loop()
{
int error;
double dT;
accel_t_gyro_union accel_t_gyro;

Serial.println(F(""));
Serial.println(F("MPU-6050"));

// Read the raw values.
// Read 14 bytes at once,
// containing acceleration, temperature and gyro.
// With the default settings of the MPU-6050,
// there is no filter enabled, and the values
// are not very stable.
error = MPU6050_read (MPU6050_ACCEL_XOUT_H, (uint8_t *) &accel_t_gyro, sizeof(accel_t_gyro));
Serial.print(F("Read accel, temp and gyro, error = "));
Serial.println(error,DEC);

// Swap all high and low bytes.
// After this, the registers values are swapped,
// so the structure name like x_accel_l does no
// longer contain the lower byte.
uint8_t swap;
#define SWAP(x,y) swap = x; x = y; y = swap

SWAP (accel_t_gyro.reg.x_accel_h, accel_t_gyro.reg.x_accel_l);
SWAP (accel_t_gyro.reg.y_accel_h, accel_t_gyro.reg.y_accel_l);
SWAP (accel_t_gyro.reg.z_accel_h, accel_t_gyro.reg.z_accel_l);
SWAP (accel_t_gyro.reg.t_h, accel_t_gyro.reg.t_l);
SWAP (accel_t_gyro.reg.x_gyro_h, accel_t_gyro.reg.x_gyro_l);
SWAP (accel_t_gyro.reg.y_gyro_h, accel_t_gyro.reg.y_gyro_l);
SWAP (accel_t_gyro.reg.z_gyro_h, accel_t_gyro.reg.z_gyro_l);

// Print the raw acceleration values

Serial.print(F("accel:"));
Serial.print(accel_t_gyro.value.x_accel, DEC);
Serial.print(F(","));
Serial.print(accel_t_gyro.value.y_accel, DEC);
Serial.print(F(","));
Serial.print(accel_t_gyro.value.z_accel, DEC);
Serial.println(F(""));

// The temperature sensor is -40 to +85 degrees Celsius.
// It is a signed integer.
// According to the datasheet:
//   340 per degrees Celsius, -512 at 35 degrees.
// At 0 degrees: -512 - (340 * 35) = -12412

Serial.print(F("temp:"));
dT = ( (double) accel_t_gyro.value.temperature + 12412.0) / 340.0;
Serial.print(dT, 3);
Serial.println(F(""));

// Print the raw gyro values.

Serial.print(F("gyro:"));
Serial.print(accel_t_gyro.value.x_gyro, DEC);
Serial.print(F(","));
Serial.print(accel_t_gyro.value.y_gyro, DEC);
Serial.print(F(","));
Serial.print(accel_t_gyro.value.z_gyro, DEC);
Serial.println(F(""));

delay(100);
}

// --------------------------------------------------------
// MPU6050_read
//
// This is a common function to read multiple bytes
// from an I2C device.
//
// It uses the boolean parameter for Wire.endTransMission()
// to be able to hold or release the I2C-bus.
// This is implemented in Arduino 1.0.1.
//
// Only this function is used to read.
// There is no function for a single byte.
//
int MPU6050_read(int start, uint8_t *buffer, int size)
{
int i, n, error;

Wire.beginTransmission(MPU6050_I2C_ADDRESS);
n = Wire.write(start);
if (n != 1)
return (-10);

n = Wire.endTransmission(false);    // hold the I2C-bus
if (n != 0)
return (n);

// Third parameter is true: relase I2C-bus after data is read.
Wire.requestFrom(MPU6050_I2C_ADDRESS, size, true);
i = 0;
while(Wire.available() && i<size)
{
buffer[i++]=Wire.read();
}
if ( i != size)
return (-11);

return (0);  // return : no error
}

// --------------------------------------------------------
// MPU6050_write
//
// This is a common function to write multiple bytes to an I2C device.
//
// If only a single register is written,
// use the function MPU_6050_write_reg().
//
// Parameters:
//   start : Start address, use a define for the register
//   pData : A pointer to the data to write.
//   size  : The number of bytes to write.
//
// If only a single register is written, a pointer
// to the data has to be used, and the size is
// a single byte:
//   int data = 0;        // the data to write
//   MPU6050_write (MPU6050_PWR_MGMT_1, &c, 1);
//
int MPU6050_write(int start, const uint8_t *pData, int size)
{
int n, error;

Wire.beginTransmission(MPU6050_I2C_ADDRESS);
n = Wire.write(start);        // write the start address
if (n != 1)
return (-20);

n = Wire.write(pData, size);  // write data bytes
if (n != size)
return (-21);

error = Wire.endTransmission(true); // release the I2C-bus
if (error != 0)
return (error);

return (0);         // return : no error
}

// --------------------------------------------------------
// MPU6050_write_reg
//
// An extra function to write a single register.
// It is just a wrapper around the MPU_6050_write()
// function, and it is only a convenient function
// to make it easier to write a single register.
//
int MPU6050_write_reg(int reg, uint8_t data)
{
int error;

error = MPU6050_write(reg, &data, 1);

return (error);
}

上面的代码绝大部分都是宏定义，建议不愿意用官方库的同学，复制粘贴下来作为头文件使用。

上一篇我推荐了一个串口调试的app，经测试非常不好用

这里可以直接用ardunio的serial monitor

<--- Ardunio

<--- 首先在Tools栏里面选择串口

<--- 然后点击这个按钮就弹出Serial
Monitor窗口了

<--- 使用Ardunio社区程序后的输出

想必大家也想到了，这里的输出有很多注解，必定会对后面的matlab采集数据造成困难。不过这就是学习过程，佛挡杀佛，神挡杀神。

思路：

0. 对字符串进行筛选，截取，获得double型的数据

1. 将数据放入 data 数组中

2. 实时更新图像

要点：

0. 将字符串str从第a个字符截取到第b个字符的方法：

str = str(a:b)

1. 将元素e放入A数组的方法：

A = [A, e]

2. 在一个窗口画多个图像的方法：

help subplot <span style="font-size: 14px;">// 参数m为列数, n为行数, p为第几个图像 具体可以使用 </span>

3. 在一个图像内画多个函数的方法：

hold all           //可理解为暂时不更新图像
plot(x1,y1,s)      //参数s，为线条描述，详细可help slop查阅
plot(x2,y2,s)
hold off           //可理解为跟新图像

程序：

callback.m //下载地址在下面

<span style="font-family: Arial, Helvetica, sans-serif;">%%callback.m 文件</span>

function callback(s, ~)
global count1;
global count2;
global count3;
global accelX;
global gyroX;
global tempX;
global accelY1;
global accelY2;
global accelY3;
global gyroY1;
global gyroY2;
global gyroY3;
global tempY;

out = fscanf(s);
out = deblank(out);

if (strfind(char(out),'accel:') > 0)
temp = out(7:end);
data = regexp(temp,',','split');
data1 = str2num(char(data(1)));
data2 = str2num(char(data(2)));
data3 = str2num(char(data(3)));
accelX = [accelX,count1];
accelY1 = [accelY1,data1];
accelY2 = [accelY2,data2];
accelY3 = [accelY3,data3];
count1 = count1 + 1;
subplot(2,2,1)
hold all
plot(accelX, accelY1, 'b');
plot(accelX, accelY2, 'g');
plot(accelX, accelY3, 'r');
hold off
break;
elseif (strfind(char(out),'gyro:') > 0)
temp = out(6:end);
data = regexp(temp,',','split');
data1 = str2num(char(data(1)));
data2 = str2num(char(data(2)));
data3 = str2num(char(data(3)));
gyroX = [gyroX,count2];
gyroY1 = [gyroY1,data1];
gyroY2 = [gyroY2,data2];
gyroY3 = [gyroY3,data3];
count2 = count2 + 1;
subplot(2,2,2)
hold all
plot(gyroX, gyroY1, 'b');
plot(gyroX, gyroY2, 'g');
plot(gyroX, gyroY3, 'r');
hold off
break;
elseif (strfind(char(out),'temp:') > 0)
temp = out(6:end);
data = str2num(char(temp));
tempX = [tempX,count3];
tempY = [gyroY1,data];
count3 = count3 + 1;
subplot(2,2,3:4)
plot(tempX, tempY, 'b');
break;
end

%%x = x + 1;
%%subplot(2,2,1);
%%plot()
%%axis([x x+500 -1000 1000]);
end

live.m //下载地址在下面

%%live.m

function live

global count1;
global count2;
global count3;
global accelX;
global gyroX;
global tempX;
global accelY1;
global accelY2;
global accelY3;
global gyroY1;
global gyroY2;
global gyroY3;
global tempY;

count1 = 1;
count2 = 1;
count3 = 1;
accelX = [];
gyroX = [];
tempX  =[];
accelY1 = [];
accelY2 = [];
accelY3 = [];
gyroY1 = [];
gyroY2 = [];
gyroY3 = [];
tempY = [];

%ONTIME Summary of this function goes here
%   Detailed explanation goes here

s=serial('/dev/tty.usbmodem1411');
set(s,'BaudRate', 9600,'DataBits',8,'StopBits',1,'Parity','none','FlowControl','none');
s.BytesAvailableFcnMode = 'terminator';
s.BytesAvailableFcn = {@callback};
fopen(s);

pause;
fclose(s);
delete(s);
clear s;
close all;
clear all;
end

callback.m 中的函数是会掉函数，当串口中有数据时边会自动调用

然后就是这样啦！

目标：

0. 读取dmp中的数据，进行绘图

1. 继续使用row data，对数据进行卡尔曼滤波，进行绘图

2. 比较效果

送自己一句话：Ever since the world has been characterized by a rancorous bitterness.

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Ardunio mpu6050 dmp 数据通过串口实现与matlab(mac)实时绘图 学习过程 【2014-9-8】

Day2

0. Ardunio 端：

思路：

要点：

程序：

目标：

Ardunio mpu6050 dmp 数据通过串口实现与matlab(mac)实时绘图学习过程【2014-9-8】