cleanflight/cleanflight — pull request #186 by hydra (2014-11-26 00:30:35+00:00)
Title: CC3D - Attempt MPU6000 SPI detection multiple times.

On two CC3D boards tested prior to this fix the mpu6000ReadRegister call
for the MPU6000_WHOAMI would sometimes fail on code boot and sometimes
on warm boot, randomly.

The reset added in 4db1d58aaf3476aba46c8ffb6af9b364abc2ff70 helps but
didn't fix detection for good.