Compilation error about no matching function for call to all writing and reading functions from I2Cdev.cpp

[LosantosJZY]

Hi Jrowberg,

I'm a beginner in using Arduino, and when I follow your instructions to install the MPU6050_DMP_using_DMP_V6.12 driver, I found all of the functions call the read or write functions defined in given I2Cdev.cpp file (such as readbit, writebit) is not matching at all. As I found the last parameter 'wireObj' you introduce in almost every such I2C read\write functions, which leads to exceeding the number of defined parameters in each function. For example, the "readbit" and "writebit" funtions defined in I2Cdev.cpp only have 6 and 4 parameters respectively, but you all introduce one more wireObj here, so the compilation cannot complete, as shown in the image.

Appreciate for your kind help! Maybe it is my mistake and maybe a little bit stupid, haha.

Best Regards,
Jin

[kolemannlutz]

Hi Jin,
Long story short, this code appears to be overcomplicated and other MPU6050 source files and library headers may be recommended.Consult the I2Cdev library's documentation or header file (I2Cdev.h) to determine the correct signature for readBit. Ensure that the types of the variables passed to the function (e.g., uint8_t&, int, uint8_t [14], uint16_t&, void*&) precisely match the expected types.

Also note: 'void*&)', where * is not located in I2Cdev.h, where void wireObj); Wire object fails and causes error. to troubleshoot, Consult: https://forum.arduino.cc/t/wire-begin-vs-boolean-begin-twowire-thewire-wire/610881

Also based from:

The parameters that you pass to std::min is different: one is uint8_t and the other is int.

The function type of std::min is as follows:

template< class T >
const T& min( const T& a, const T& b );
You need tell the compiler what's the type parameter of std::min.

They proposed solution is:

std::min(fifoCount, 128);

Also see:
// 2011-11-01 - fix write*Bits mask calculation (thanks sasquatch @ Arduino forums)
https://github.com/jrowberg/i2cdevlib/blob/master/Arduino/MPU6050/library.json
https://github.com/jrowberg/i2cdevlib