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lsm303d/l3gd20: change filters to 50Hz analog on-chip filters

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after discussion with Leonard these analog on-chip filters should be
at 50Hz
This commit is contained in:
Andrew Tridgell
2013-12-10 12:04:13 +01:00
committed by Lorenz Meier
parent 0a83772c0d
commit 24a243843e
2 changed files with 14 additions and 4 deletions
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src/drivers/lsm303d/lsm303d.cpp
+6 -1
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@@ -631,7 +631,12 @@ LSM303D::reset()
accel_set_range(LSM303D_ACCEL_DEFAULT_RANGE_G);
accel_set_samplerate(LSM303D_ACCEL_DEFAULT_RATE);
accel_set_driver_lowpass_filter((float)LSM303D_ACCEL_DEFAULT_RATE, (float)LSM303D_ACCEL_DEFAULT_DRIVER_FILTER_FREQ);
accel_set_onchip_lowpass_filter_bandwidth(0); // this gives 773Hz
// we setup the anti-alias on-chip filter as 50Hz. We believe
// this operates in the analog domain, and is critical for
// anti-aliasing. The 2 pole software filter is designed to
// operate in conjunction with this on-chip filter
accel_set_onchip_lowpass_filter_bandwidth(LSM303D_ACCEL_DEFAULT_ONCHIP_FILTER_FREQ);
mag_set_range(LSM303D_MAG_DEFAULT_RANGE_GA);
mag_set_samplerate(LSM303D_MAG_DEFAULT_RATE);