MPU-9150 Strange operation

[Jagger2015]

Hi everyone,

 

I use in my current project component MPU9150.

I have no difficulty communicating with it and my PIC24F in I2C.

 

The first part that retrieves data from the accelerometer and gyroscope is performed without problem.

Indeed , I can read and write to each register and the module responds well to me WHO_I_AM.

 

The second part allows me to get the magnetometer data by activating the bypass I2C .

I still have no problem reading the magnetometer registers .

 

My problem is this :

 

When I activate the bypass and I read the magnetometer ( Add: 0x0C ) , I can no longer read the registers of the accelerometer and gyroscope ( Add: 0x68 ).

 

I do not understand why I can not access the address 0x68.

 

Thanks in advance