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| author | Lorenz Meier <lm@inf.ethz.ch> | 2015-01-26 20:23:42 +0100 |
|---|---|---|
| committer | Lorenz Meier <lm@inf.ethz.ch> | 2015-01-26 20:23:42 +0100 |
| commit | 52f3fe1d9af53e5f1dd40714aa177fcc4c5e0047 (patch) | |
| tree | dfcee92df632f3abd211cfff7158a955650adc01 /src/drivers/mpu6000 | |
| parent | b8fade7dcfa98d0963c7f23529168baa64f7fc1a (diff) | |
| download | px4-firmware-52f3fe1d9af53e5f1dd40714aa177fcc4c5e0047.tar.gz px4-firmware-52f3fe1d9af53e5f1dd40714aa177fcc4c5e0047.tar.bz2 px4-firmware-52f3fe1d9af53e5f1dd40714aa177fcc4c5e0047.zip | |
Added more docs to offset as suggested by @velocoderaptor, thanks!
Diffstat (limited to 'src/drivers/mpu6000')
| -rw-r--r-- | src/drivers/mpu6000/mpu6000.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/drivers/mpu6000/mpu6000.cpp b/src/drivers/mpu6000/mpu6000.cpp index 1c35bae2d..2be758244 100644 --- a/src/drivers/mpu6000/mpu6000.cpp +++ b/src/drivers/mpu6000/mpu6000.cpp @@ -921,7 +921,17 @@ MPU6000::gyro_self_test() if (self_test()) return 1; + /* + * Maximum deviation of 20 degrees, according to + * http://www.invensense.com/mems/gyro/documents/PS-MPU-6000A-00v3.4.pdf + * Section 6.1, initial ZRO tolerance + */ const float max_offset = 0.34f; + /* 30% scale error is chosen to catch completely faulty units but + * to let some slight scale error pass. Requires a rate table or correlation + * with mag rotations + data fit to + * calibrate properly and is not done by default. + */ const float max_scale = 0.3f; /* evaluate gyro offsets, complain if offset -> zero or larger than 20 dps. */ |