Hi,
Thanks for your answer !
I have uploaded i2c-scanner, and I get that :
Scanning...
I2C device found at address 0x68 !
done
So, it's ok, the MPU9250 is present.
I've tried other source codes, basic examples, and I can read accelerometer and gyrometer values (but no magnetometers values at this time).
When I add #define MPU_DEBUG in mpu.h, I get this :
START
MPU init: 3
Free mem: 6802
READ ERROR! -1
READ ERROR! -1
READ ERROR! -1
READ ERROR! -1
READ ERROR! -1
READ ERROR! -1
Many thanks for yout help !
Sylvain