Yifei Teng / MPU6050

MPU6050 FreeIMU library

Dependents:   FreeIMU FreeIMU_external_magnetometer

Fork of MPU6050_tmp by Aloïs Wolff

Async MPU6050 library

My port of the MPU6050 library samples the chip at 500Hz using Timer. Async I2C is achieved using a custom I2C library, which supports I2C calls from interrupts. Link given below:

Import libraryMODI2C

Improvements to Olieman's MODI2C library. Supports calls from IRQ.

Last commit 28 Mar 2018 by Yifei Teng

Difference between this port and the Arduino MPU6050 library

The getMotion6 function only returns a copy of the last obtained readings, which is sampled at a frequency of 500Hz (adjustable). Hence it can be called at any frequency without taxing the I2C.

I2Cdev.h

Committer:
pommzorz
Date:
2013-02-20
Revision:
2:3cf70c42a784
Parent:
0:662207e34fba
Child:
7:95e74f827c08

File content as of revision 2:3cf70c42a784:

//ported from arduino library: https://github.com/jrowberg/i2cdevlib/tree/master/Arduino/MPU6050
//written by szymon gaertig (email: szymon@gaertig.com.pl), small correction by Aloïs Wolff
//
//Changelog: 
//2013-01-08 - first beta release
//2013-02-18 - fixed a malloc with no free in ::readBytes

#ifndef I2Cdev_h
#define I2Cdev_h

#include "mbed.h"

#define I2C_SDA p28
#define I2C_SCL p27

class I2Cdev {
    private:
        I2C i2c;
        Serial debugSerial;
    public:
        I2Cdev();
        I2Cdev(PinName i2cSda, PinName i2cScl);        
        
        int8_t readBit(uint8_t devAddr, uint8_t regAddr, uint8_t bitNum, uint8_t *data, uint16_t timeout=I2Cdev::readTimeout());
        int8_t readBitW(uint8_t devAddr, uint8_t regAddr, uint8_t bitNum, uint16_t *data, uint16_t timeout=I2Cdev::readTimeout());
        int8_t readBits(uint8_t devAddr, uint8_t regAddr, uint8_t bitStart, uint8_t length, uint8_t *data, uint16_t timeout=I2Cdev::readTimeout());
        int8_t readBitsW(uint8_t devAddr, uint8_t regAddr, uint8_t bitStart, uint8_t length, uint16_t *data, uint16_t timeout=I2Cdev::readTimeout());
        int8_t readByte(uint8_t devAddr, uint8_t regAddr, uint8_t *data, uint16_t timeout=I2Cdev::readTimeout());
        int8_t readWord(uint8_t devAddr, uint8_t regAddr, uint16_t *data, uint16_t timeout=I2Cdev::readTimeout());
        int8_t readBytes(uint8_t devAddr, uint8_t regAddr, uint8_t length, uint8_t *data, uint16_t timeout=I2Cdev::readTimeout());
        int8_t readWords(uint8_t devAddr, uint8_t regAddr, uint8_t length, uint16_t *data, uint16_t timeout=I2Cdev::readTimeout());

        bool writeBit(uint8_t devAddr, uint8_t regAddr, uint8_t bitNum, uint8_t data);
        bool writeBitW(uint8_t devAddr, uint8_t regAddr, uint8_t bitNum, uint16_t data);
        bool writeBits(uint8_t devAddr, uint8_t regAddr, uint8_t bitStart, uint8_t length, uint8_t data);
        bool writeBitsW(uint8_t devAddr, uint8_t regAddr, uint8_t bitStart, uint8_t length, uint16_t data);
        bool writeByte(uint8_t devAddr, uint8_t regAddr, uint8_t data);
        bool writeWord(uint8_t devAddr, uint8_t regAddr, uint16_t data);
        bool writeBytes(uint8_t devAddr, uint8_t regAddr, uint8_t length, uint8_t *data);
        bool writeWords(uint8_t devAddr, uint8_t regAddr, uint8_t length, uint16_t *data);

        static uint16_t readTimeout(void);
};

#endif