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24 Commits

Author SHA1 Message Date
Andrew Tridgell 6341db7031 Revert "ADC: only read channels that are actually being used" 
This reverts commit 95e6bb26f4772ca8c7faa62215de6f078d3df3c7.

ADC will be disabled on APM2
 2011-12-17 07:29:09 +11:00
Andrew Tridgell d442bad413 Revert "ADC: added an enable_channel() API" 
This reverts commit dafeac01d8f14162600cf821404ba4072dcae14d.

ADC will be disabled on APM2
 2011-12-17 07:29:09 +11:00
Andrew Tridgell 9591317dbc ADC: added an enable_channel() API 
enable_channel() must be used before the Ch6() method is called to
enable gathering of data on the required channels
 2011-12-16 20:09:40 +11:00
Andrew Tridgell 09947dace1 ADC: only read channels that are actually being used 
on the APM2 we usually use none of the ADC channels, although we may
use the airspeed sensor. This change means we detect which channels
are being read, and only do the SPI transfers for those ones. That
saves us about 100usec per timer interrupt (ie. about 10% of our CPU)
 2011-12-16 20:09:35 +11:00
Andrew Tridgell f125f6619a fixed formatting of ADC driver 
it was a nasty mix of DOS and UNIX
 2011-12-16 20:09:29 +11:00
Andrew Tridgell 5d503fd65e ADC: change adc.Ch() to return a float 
this gives us a bit more precision in airspeed measurement, and costs
us virtually nothing as we are converting to float immediately after
getting the value
 2011-12-12 15:14:55 +11:00
Andrew Tridgell e491168273 ADC: remove a very small (0.2 degrees/s) bias in the ADC code 
small bias from integer rounding
 2011-11-28 16:22:33 +11:00
Pat Hickey 017f121566 AP_ADC: rework ADC library to use PeriodicProcess and ISR_Register 
this makes it possible to build the ADC library when another driver
may also want that interrupt
 2011-11-25 20:00:16 -08:00
Jason Short 0bfa67f413 Heavy Accel Filter + mild Gyro Filter. To use, filter_result must be set to true on ADC. Off by default. 2011-10-01 15:44:53 -07:00
Jason Short f89da12387 Minimized the accel_filtered vector to be faster and more accurate. 
Made the Filter include the Accels and moved from 8 to 4 terms in the filter
 2011-09-30 18:40:29 -07:00
Jason Short de61e87128 Added ADC gyro Filtering for quads - this fixes a noise issue introduced into the controller 
added Position mode
removed
Added back in the accelerometer experiment
Added filter_result boolean to enable filter on the fly
 2011-09-29 23:27:23 -07:00
Andrew Tridgell f375258699 fixed inconsistent linefeeds in ADC code 
the linefeeds had bacome inconsistent in this library, making some
editors fail to load the code
 2011-09-19 11:04:02 +10:00
Andrew Tridgell a835912d93 ADC: randomise the sampling rate 
this is based on suggestions from Kari and Mike, and should reduce the
aliasing effects we get from the simple averaging
 2011-09-17 14:58:02 +10:00
Andrew Tridgell 1d68953416 ADC: the bottom 3 bits of ADC output are always zero 
its a 12 bit ADC .... silly of me to think the bottom 3 bits are
valid!
 2011-09-17 14:58:02 +10:00
Andrew Tridgell 9af7021a98 change ADC sample rate to 1kHz 
this costs us about 9% of our CPU, but should make aliasing much less
of a problem.
 2011-09-17 14:58:02 +10:00
Andrew Tridgell 70bf945d40 ADC: re-work for ADC code for full resolution and accurate timing 
this changes the ADC code to return the full resolution of the
sensors. It also adds a new Ch6() interface that returns 6 channels at
once, so the IMU can read 3 accelerometers and 3 gyros at once, and
get the exact time that the values were accumulated over
 2011-09-17 14:58:02 +10:00
jasonshort eb39d2d53a Added ability to grab an unfiltered value from the ADC 
git-svn-id: https://arducopter.googlecode.com/svn/trunk@2963 f9c3cf11-9bcb-44bc-f272-b75c42450872
 2011-07-30 20:33:45 +00:00
jasonshort c5f06b99fe silly formatting 
git-svn-id: https://arducopter.googlecode.com/svn/trunk@2566 f9c3cf11-9bcb-44bc-f272-b75c42450872
 2011-06-16 16:43:43 +00:00
jasonshort c1ddd58d4c Implemented moving average filter to deal with noise issues on quads, default is a 6 member filter. 
git-svn-id: https://arducopter.googlecode.com/svn/trunk@2551 f9c3cf11-9bcb-44bc-f272-b75c42450872
 2011-06-12 23:50:15 +00:00
james.goppert 7809b0ca2a Massive warning fixes. 
git-svn-id: https://arducopter.googlecode.com/svn/trunk@2089 f9c3cf11-9bcb-44bc-f272-b75c42450872
 2011-05-04 19:12:27 +00:00
mich146@hotmail.com bae1c531d0 ADC Library - reimplement overflow 
git-svn-id: https://arducopter.googlecode.com/svn/trunk@1832 f9c3cf11-9bcb-44bc-f272-b75c42450872
 2011-03-31 14:19:59 +00:00
mich146@hotmail.com cdcee09e0d Fix adc issue causing serial problems/other issues. (DOUG please check) 
git-svn-id: https://arducopter.googlecode.com/svn/trunk@1829 f9c3cf11-9bcb-44bc-f272-b75c42450872
 2011-03-29 11:16:21 +00:00
deweibel@gmail.com 8e542512da Change ADC overflow correction 
git-svn-id: https://arducopter.googlecode.com/svn/trunk@1640 f9c3cf11-9bcb-44bc-f272-b75c42450872
 2011-02-13 23:24:37 +00:00
james.goppert cce122d387 Moved APM_ADC to AP_ADC 
git-svn-id: https://arducopter.googlecode.com/svn/trunk@954 f9c3cf11-9bcb-44bc-f272-b75c42450872
 2010-11-27 05:36:19 +00:00