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277 Commits

Author SHA1 Message Date
Randy Mackay fe24721218 BaroGlitch: increase default ok distance to 5m 
When taking off some copters hove a sudden baro altitude dip of 4m
 2014-08-02 11:43:06 +09:00
Randy Mackay c68d4fdfcb BaroGlitch: init members to resolve compiler warning 2014-08-01 14:07:34 +09:00
Randy Mackay 728da12441 BaroGlitch: remove debug 2014-07-29 22:05:09 +09:00
Andrew Tridgell c538cc0665 AP_Baro: fixed example build 2014-07-29 21:04:26 +10:00
Randy Mackay 2289b98d34 Baro_Glitch: initial version of baro glitch protection 
Based on GPS Glitch protection library
 2014-07-28 22:16:12 +09:00
Andrew Tridgell a458f1bf5f AP_Baro: minor improvements to Baro HIL code health check 2014-07-24 21:46:06 +10:00
Andrew Tridgell 2b3d17d955 AP_Baro: fixed APM1 build 2014-07-14 09:50:17 +10:00
Andrew Tridgell be02f0c34f AP_Baro: work around occasional 0 values from MS5611 
this was seen on the PXF board. It isn't yet known why it happens
 2014-07-14 09:44:36 +10:00
Andrew Tridgell b0ab2671cd AP_Baro: removed old device specific example code 
not needed any more
 2014-07-14 09:44:36 +10:00
Andrew Tridgell 028e2e34f1 AP_Baro: added generic baro test sketch 2014-07-14 09:44:36 +10:00
Andrew Tridgell f73ec95c39 AP_Baro_MS5611: added PROM CRC checking 
disabled on APM2 to save flash space
 2014-07-14 09:44:35 +10:00
Víctor Mayoral Vilches 8a85f8d6d2 AP_Baro_MS5611_test: Add HAL specific code. 2014-07-14 09:29:53 +10:00
Víctor Mayoral Vilches de58df6371 AP_Baro_MS5611_test: Add block for APM2-code 2014-07-14 09:29:45 +10:00
Víctor Mayoral Vilches 9797867067 AP_Baro_MS5611: Fix the test code so that compiles. 
Add HAL_BOARD_LINUX and HAL_BOARD_ERLE compatibility.
 2014-07-14 09:02:47 +10:00
Andrew Tridgell 74c3b404ee AP_Baro: avoid some float conversion warnings 2014-07-08 20:26:54 +10:00
Andrew Tridgell e118984c26 AP_Baro: save some flash and memory on APM2 
we don't need the I2C MS5611 driver
 2014-07-08 14:21:42 +10:00
Andrew Tridgell 3705c90b8e AP_Baro: fix for HAL_GPIO_* 2014-06-02 10:42:36 +10:00
Andrew Tridgell 41dd280739 AP_Baro: expose get_altitude_difference() 
this is useful for pressure altitude calculations
 2014-04-11 16:34:02 +10:00
Emile Castelnuovo f4784fe6a1 AP_Baro: new files for VRBRAIN board 2014-04-08 16:19:19 +10:00
Andrew Tridgell d3d71d597c AP_Baro: fixed example build 2014-03-19 12:14:05 +09:00
Andrew Tridgell 63234d4c22 AP_Baro: fixed linux build of BMP085 driver 2014-03-07 09:33:43 +11:00
Andrew Tridgell b2bd81f262 AP_Baro: added alternative setHIL interface 
uses pressure and temperature for better log replay
 2014-02-18 09:25:07 +11:00
Andrew Tridgell 3af38a778d AP_Baro: fixed example build 2014-02-15 06:40:15 +11:00
Randy Mackay bb715424ee Baro: fix BMP085 example sketch 2014-02-15 06:09:08 +11:00
Andrew Tridgell 6964529124 AP_Baro: _calculate can be private 2014-02-15 05:48:24 +11:00
Andrew Tridgell 2cd781997f AP_Baro: changed HIL driver to use floats and better handle starup 2014-02-15 05:48:18 +11:00
Andrew Tridgell 5e3c4441dc AP_Baro: use HAL_CPU_CLASS in baro driver 2013-12-31 10:28:37 +11:00
Andrew Tridgell 42eba615b4 AP_Baro: fixed example build 2013-12-17 11:51:37 +11:00
Andrew Tridgell 6c2e392d5d AP_Baro: fixed BMP085 examples build in autotest 2013-11-23 18:50:55 +11:00
Andrew Tridgell 8a65a729f3 AP_Baro: start MS5611 at high speed 2013-11-07 12:48:17 +11:00
Tobias 7855d242c7 AP_Baro: add time-unit comment 2013-10-27 13:39:23 +09:00
Andrew Tridgell 3393a5c99e AP_Baro: prevent a race condition in the SITL baro driver 2013-10-17 17:22:19 +11:00
Andrew Tridgell d60a68fd9c AP_Baro: check baro at exactly 100Hz 
prevent waits for samples
 2013-10-13 11:02:53 +09:00
Andrew Tridgell 6fa55d101f AP_Baro: fixed I2C semaphore handling for BMP085 driver 2013-10-08 11:50:54 +11:00
Andrew Tridgell 487caea3a5 AP_Baro: added update_calibration() method 
used for auto baro calibration when disarmed
 2013-10-05 18:44:00 +10:00
Andrew Tridgell c04d9b0c03 AP_Baro: updates for AP_HAL::MemberProc 2013-09-30 21:06:42 +10:00
Andrew Tridgell 8a699f6189 AP_Baro: enable BMP085 on Linux 2013-09-28 22:04:15 +10:00
Andrew Tridgell 20b1131059 AP_Baro: use new scheduler API 2013-09-28 21:24:03 +10:00
Mike McCauley e3c20f06ac AP_Baro: Chnages to flymaple port. 
Flymaple has no EOC pin
 2013-09-24 13:33:25 +10:00
Andrew Tridgell fc119d9b80 AP_Baro: cleaned up temperature and pressure units 
thanks to Mike McCauley for pointing this out
 2013-09-21 21:30:41 +10:00
Andrew Tridgell 97b7130bb9 libraries: update license header to GPLv3 
we switched to GPLv3 a long time ago, but neglected to update the
per-file license headers
 2013-08-30 13:01:39 +10:00
Andrew Tridgell 517c44bbaa AP_Baro: fixed example build 2013-08-30 13:01:36 +10:00
Andrew Tridgell 395739dded AP_Baro: simplify PX4 driver 
we can now rely on queueing in NuttX driver
 2013-08-30 13:01:34 +10:00
Andrew Tridgell 5607c89df0 AP_Baro: use fabs() not abs() 
thanks to Randy for spotting this
 2013-08-30 13:01:33 +10:00
Paul Riseborough ba009e55e3 AP_Baro : Fixed bug in temperature units in AP_Baro_HIL 2013-07-22 12:50:02 +10:00
Andrew Tridgell ebebee4f06 AP_Baro: extend the atmospheric model to higher altitudes 2013-07-22 12:50:02 +10:00
Andrew Tridgell 0c6725f289 AP_Baro: improved the accuracy of the barometer model 2013-07-22 12:50:01 +10:00
Andrew Tridgell 0f72401d8d AP_Baro: added GND_ALT_OFFSET parameter 
used for automatic barometric adjustment by a ground station equipped
with a barometer
 2013-07-10 14:38:57 +10:00
Paul Riseborough 7bdb098e77 AP_Baro: added get_EAS2TAS() 
this provides the scaling factor between equivalent and true airspeed
based on altitude
 2013-07-04 16:56:56 +10:00
Andrew Tridgell 61361dac9b AP_Baro: added units to baro documentation 2013-07-04 16:56:56 +10:00
Paul Riseborough 3b98bbd159 AP_Baro: more precise altitude calculation on PX4 
if not using an AVR CPU then use a more computationally expensive
altitude calculation, which is more precise at higher altitudes
 2013-07-04 16:56:56 +10:00
Randy Mackay aa2b10f044 AP_Baro: TEMP parameter comment fix 2013-06-18 11:28:36 +09:00
Andrew Tridgell ed93f80ba9 AP_Baro: fixed example build 2013-05-08 16:45:07 +10:00
Andrew Tridgell 26bf636541 AP_Baro: fixed a build warning 2013-05-02 21:31:04 +10:00
Andrew Tridgell 7cec3caf19 AP_Baro: cleaned up setHIL method 
move pressure calculation into library
 2013-05-02 15:26:38 +10:00
Andrew Tridgell c6c1fce2f1 AP_Baro: removed HIL constructor 
this wasn't calling the parent class
 2013-05-02 15:16:52 +10:00
Andrew Tridgell 2d089174cd AP_Baro: rename AP_Baro_BMP085_HIL to AP_Baro_HIL 
there is nothing specific to the BMP085 in it
 2013-05-02 15:08:42 +10:00
Andrew Tridgell d7ec985029 AP_Baro_PX4: fixed baro driver to run at full rate 
we were skipping samples due to a timer handling bug. It now checks
for new samples at 100Hz
 2013-05-01 08:54:53 +10:00
Janne Mäntyharju 7a04fe9915 AP_Baro: Fixed build for APM2 Beta hardware 2013-04-16 11:24:38 +10:00
Andrew Tridgell f0469a21f2 AP_Baro: fixed timestamp on baro for PX4 
milliseconds not microseconds
 2013-01-22 21:22:01 +11:00
Andrew Tridgell b9b3ef91a1 AP_Baro: added timer to PX4 driver 
this gives us more samples when main sketch is reading slowly
 2013-01-21 18:20:05 +11:00
Andrew Tridgell 6a5421a361 AP_Baro: ask for maximum poll rate for PX4 2013-01-21 08:27:02 +11:00
Andrew Tridgell 74f7b0f218 AP_Baro: added accumulate method to PX4 driver, and fixed scaling 2013-01-20 22:13:21 +11:00
James Bielman 4fa7bb1486 Add AVR compatibility header for missing math.h definitions. 
- Define float versions of math functions to the double versions
  on AVR (eg. #define sinf sin).
- These macros appear to be missing in older versions of avr-libs.
- Include AP_Math.h rather than math.h to get these definitions.
 2013-01-16 13:52:17 +11:00
James Bielman 5631f865b2 Update floating point calculations to use floats instead of doubles. 
- Allows use of hardware floating point on the Cortex-M4.
- Added "f" suffix to floating point literals.
- Call floating point versions of stdlib math functions.
 2013-01-16 13:52:01 +11:00
Andrew Tridgell 2fe4656a50 Merge pull request #4 from GaloisInc/master 
Thanks Pat!
 2013-01-10 17:24:59 -08:00
James Bielman 25d078e2bd AP_Baro_MS5611: Don't panic if taking semaphore fails during init. 
- The MPU6000 holds on to the I2C semaphore for quite some time during
  init, which caused a panic when the MS5611 is also on I2C.
 2013-01-10 14:22:41 -08:00
Andrew Tridgell 2c603a0960 AP_Baro: only build BMP085 driver on APM1 2013-01-10 21:01:07 +11:00
Andrew Tridgell 8cb0ed364a AP_Baro: read 4 pressure values for every temperature value on BMP085 2013-01-09 23:44:26 +11:00
Andrew Tridgell 1ce1fa3864 AP_Baro: update example to use accumulate() 2013-01-09 23:06:24 +11:00
Andrew Tridgell 8ceabc97f1 AP_Baro: added accumulate() function 
this allows us to read the BMP085 much faster
 2013-01-09 23:05:17 +11:00
Andrew Tridgell 9b972af307 AP_Baro: skip timer if we don't get the SPI semaphore 2013-01-09 20:27:48 +11:00
James Bielman eca1417858 AP_HAL: Add semaphores to I2C driver. 
- Guard I2C transactions with this semaphore in the MS5611 and
  HMC5843 drivers.
 2013-01-04 15:43:43 -08:00
Andrew Tridgell c15bf95e19 AP_Baro: fixed example build on AVR 2013-01-04 22:45:02 +11:00
Andrew Tridgell aa64a41512 AP_Baro: removed debug line 2013-01-04 22:26:51 +11:00
Andrew Tridgell 4fe7ad6267 AP_Baro: added averaging to PX4 baro driver 2013-01-04 21:08:20 +11:00
Andrew Tridgell dbcaa4cf3c AP_Baro: average over multiple samples in PX4 baro driver 2013-01-04 20:11:30 +11:00
Andrew Tridgell 2ac6541526 AP_Baro: added PX4 barometer driver 2013-01-04 14:58:24 +11:00
James Bielman d84ba8ef59 Use HAL suspend/resume timer procs rather than atomic. 
- Preparation for removing begin/end atomic.
 2013-01-03 17:33:13 -08:00
Pat Hickey 5d91f342bb AP_Baro_MS5611: uses new semaphore lib 2013-01-03 13:48:07 -08:00
James Bielman 264db3670e AP_Baro: Add CONFIG_MS5611_SERIAL option to choose between SPI and I2C. 
- Update ArduCopter and ArduPlane modules to pass the correct serial
  driver to the MS5611 driver.
- Update barometer examples, assuming SPI.
 2013-01-03 13:48:06 -08:00
James Bielman 5753ae5692 AP_Baro: Add I2C support to MS5611 driver. 2013-01-03 13:48:06 -08:00
Andrew Tridgell 374af1cd14 build: change from Arduino.mk to apm.mk 2013-01-02 17:29:37 +11:00
Andrew Tridgell c5ba33d39a AP_Baro: fixed MS5611 semaphore handling 2012-12-21 19:33:57 +11:00
Andrew Tridgell 3aa39da6cd AP_Baro: removed some debug code 2012-12-20 14:53:23 +11:00
Andrew Tridgell a1187519a8 AP_HAL: use AP_HAL_BOARD_DRIVER in remaining test sketches 2012-12-20 14:52:37 +11:00
Andrew Tridgell c15eb97c8d AP_Baro: fixed example build 2012-12-20 14:52:36 +11:00
Pat Hickey eb530b86e8 move Arduino.mk to /mk/Arduino.mk 2012-12-20 14:52:35 +11:00
Pat Hickey 107ab1a694 AP_Baro: translated to SPI transactions 2012-12-20 14:52:32 +11:00
Pat Hickey d92e8045c1 AP_Baro: uses scheduler panic 2012-12-20 14:52:31 +11:00
Pat Hickey 2c2279722b AP_Baro_MS5611: use scheduler panic 2012-12-20 14:52:31 +11:00
Andrew Tridgell 7d27e420ae AP_HAL: remove unnecessary Arduino.h includes 2012-12-20 14:52:30 +11:00
Andrew Tridgell 4a54ffb523 Baro: use local include to reduce boilerplate 2012-12-20 14:52:30 +11:00
Andrew Tridgell dbd9814327 AP_Baro: get rid of apm2_hardware parameter in init 2012-12-20 14:51:38 +11:00
Andrew Tridgell cafeaf91d6 AP_Baro: updates for new AP_Param API 2012-12-20 14:51:38 +11:00
Pat Hickey 475da4eca4 CONFIG_HAL_BOARD - test sketches fixed up, build all passes 2012-12-20 14:51:37 +11:00
Andrew Tridgell 2ea243e45b AP_Baro: removed unused code 2012-12-20 14:51:37 +11:00
Pat Hickey bfd03ab40c AP_Baro: robust spi device 2012-12-20 14:51:35 +11:00
Pat Hickey 60f7788be4 AP_Baro: robust calibration 2012-12-20 14:51:35 +11:00
Pat Hickey eaa0a990a4 AP_Baro: MS5611 robust semaphores 2012-12-20 14:51:35 +11:00
Pat Hickey 52925b655f AP_Baro: MS5611 uses delay in busy wait 2012-12-20 14:51:35 +11:00
Pat Hickey c1114168e4 AP_Baro tests rebase fixups 2012-12-20 14:51:29 +11:00
Pat Hickey a4f1f6a5db AP_Progmem: fix dependencies for all sketches touched by AP_HAL_AVR 2012-12-20 14:51:28 +11:00
Pat Hickey 668caa4a2e Fix calls to AP_HAL::Scheduler::register_timer_process 2012-12-20 14:51:27 +11:00
Pat Hickey 5d40074e4e AP_Baro: port to AP_HAL 2012-12-20 14:51:26 +11:00
Pat Hickey 3f1d9d7f69 AP_Param: #include <AP_Param.h> fixups for libraries & sketches 
* I mostly went through with grep and added an #include <AP_Param.h> below
  every #include <AP_Common.h>. Not all of these example sketches might
  strictly need AP_Param.
 2012-12-20 14:51:19 +11:00
Andrew Tridgell 3552f3f9c5 AP_Baro: fixed example build 2012-11-24 21:07:41 +11:00
Andrew Tridgell e331634bc5 AP_Baro: switch to SREG = oldSREG pattern for interrupt mask/restore 2012-11-20 22:31:17 +11:00
rmackay9 56f88821e9 AP_AHRS: fix example sketch 
AP_Airspeed: fix example sketch
AP_Baro: fix example sketch
AP_Declination: fix example sketch
AP_Math: fix example sketch
 2012-11-08 00:08:18 +09:00
rmackay9 1c7118a2d1 AP_Baro: added get_last_update which returns the time the barometer sensor was last read 2012-11-07 19:21:25 +09:00
Andrew Tridgell e5846bd965 AP_Baro: removed _sync_access check 
this isn't needed as the common variables are already protected by
cli()/sei()
 2012-09-20 17:34:33 +10:00
uncrustify 4cd6657f70 uncrustify libraries/AP_Baro/AP_Baro_BMP085_hil.h 2012-08-21 19:19:51 -07:00
uncrustify fa90f0b80f uncrustify libraries/AP_Baro/AP_Baro.h 2012-08-21 19:00:51 -07:00
uncrustify 1196285266 uncrustify libraries/AP_Baro/AP_Baro_MS5611.h 2012-08-21 19:00:50 -07:00
uncrustify cfcef93e16 uncrustify libraries/AP_Baro/AP_Baro_BMP085.h 2012-08-21 19:00:50 -07:00
uncrustify 5a99d6b697 uncrustify libraries/AP_Baro/AP_Baro_BMP085.cpp 2012-08-21 19:00:18 -07:00
uncrustify b0003c020f uncrustify libraries/AP_Baro/AP_Baro_MS5611.cpp 2012-08-21 19:00:18 -07:00
uncrustify b39411e8d4 uncrustify libraries/AP_Baro/AP_Baro_BMP085_hil.cpp 2012-08-21 19:00:18 -07:00
uncrustify 6f02a645c3 uncrustify libraries/AP_Baro/AP_Baro.cpp 2012-08-21 19:00:18 -07:00
uncrustify 12497c51b5 uncrustify libraries/AP_Baro/examples/AP_Baro_MS5611_test/AP_Baro_MS5611_test.pde 2012-08-21 19:00:18 -07:00
uncrustify fce9044fb4 uncrustify libraries/AP_Baro/examples/AP_Baro_BMP085_test/AP_Baro_BMP085_test.pde 2012-08-21 19:00:17 -07:00
Andrew Tridgell c9ba693e1f AP_Baro: the HIL baro needs to inherit calibrate() from the parent class 
this was what caused the renorm errors
 2012-08-18 16:32:23 +10:00
Andrew Tridgell 034fb5b194 APM: fixed hil build 2012-08-16 12:53:37 +10:00
Andrew Tridgell 518d6365ff AP_Param: update remaining libraries for new constructor syntax 2012-08-08 12:11:57 +10:00
Andrew Tridgell a7b9aff79f AP_Baro: the DerivativeFilter now handles duplicate data 
this saves a few bytes of memory
 2012-08-08 12:07:36 +10:00
Andrew Tridgell f501503eb0 AP_Baro: improved barometer averaging 
this changes the barometer calculations to floating point. On a MS5611
this is actually about twice as fast as the previous 64 bit
calculations, but gains us more accuracy as we are able to take
advantage of sub-bit precision when we average over 8 samples.
 2012-07-06 15:11:30 +10:00
Andrew Tridgell 3c7e521f70 AP_Baro: update MS5611 test to use baro library altitude 2012-07-06 15:11:30 +10:00
Andrew Tridgell 209136386b AP_Baro: added get_pressure_samples() interface 
this returns how many samples were used to calculate the last pressure
 2012-07-05 16:29:21 +10:00
Andrew Tridgell 185c6e5b32 AP_Baro: change to a 7 point DerivativeFilter for climb rate 2012-07-05 13:00:47 +10:00
Andrew Tridgell f9fc7aafe7 AP_Baro: use DerivativeFilter in barometer climb rate 2012-07-05 13:00:46 +10:00
Andrew Tridgell 9f8703274c AP_Baro: show climb rate in baro test sketch 2012-07-05 13:00:45 +10:00
Andrew Tridgell 057eb5e6f6 Baro: average over all pressure/temperature samples on MS5611 
this allows us to use the MS5611 barometer at its full 100Hz sample
rate (80Hz for pressure, 20Hz for temperature). The pressure and
temperature values are averaged between reads without adding any
latency. Previously the driver would throw away values between
readings

This also fixes a race condition in reading from the SPI bus that
could lead to bad values from the barometer
 2012-07-02 13:44:53 +10:00
Andrew Tridgell f70cd71791 Baro: fixed build of MS5611 test code 2012-07-02 13:44:53 +10:00
Andrew Tridgell 5bccfbd94c Barometer: fixed airstart for APM 
we need to re-load the ground pressure and temperature from eeprom on
and airstart
 2012-06-27 16:01:50 +10:00
Andrew Tridgell c387edd74c Baro: added get_altitude() and get_climb_rate() interfaces 
this allows the barometer driver to calibrate and return altitude and
climb rate values. This will be used by the AHRS drift correction code
for vertical velocity

The climb rate uses a 5 point average filter
 2012-06-27 16:01:50 +10:00
rmackay9 5c9dc00ae2 AP_Baro: fixed comment to clarify that every-other call updates temperature or pressure 2012-06-03 17:31:17 +09:00
Andrew Tridgell 88b2139d91 Baro: added suspend/resume on init 2012-05-01 12:06:54 +10:00
rmackay9 2d65ec2874 AP_Baro - change data type size of temperature's average filter to int32_t (was int16_t) 2012-03-24 23:21:11 +09:00
rmackay9 01cc5fe938 AP_Baro - removed unnecessary 2 element average filtering of pressure (there is a 4 or 5 element average filter in arducopter code itself, two places is messy) 
- also removed unused _offset_press variable
 2012-03-18 15:18:05 +09:00
rmackay9 7560242721 AP_Baro - added average filter for temperature to replace broken filter 
- added average filter (for last two values) for raw pressure
        - changed some "long" to int32_t and "unsigned long" to uint32_t
 2012-03-18 01:06:02 +09:00
Jason Short 486c56ce41 Consolidated Barometer pressure sensing to a single filter based on Randy's new filter class. 2012-03-08 23:13:04 -08:00
Jason Short e57b91c2e2 Updated on Barometer - increased the Temp filtering and decreased the pressure filtering to and get less temp noise, faster response from pressure. I'm filtering the Climb rate differently now, so this higher pressure noise should not hurt the derivative calcs at all now. 2012-03-06 20:55:35 -08:00
rmackay9 d81c951849 AP_Baro - fixed small compiler warning to do with order of parameters in constructor 2012-02-29 22:46:29 +09:00
justinbeech 62b104cbfa Found free extra 256 bytes of RAM eliminate _clz use from libgcc 
Believe it or not, changing / 2^31 to >>31 saved 256 bytes in the "d" segment.

The reason is that GCC version prior to 4.3.5 does not have a count_leading_zeros (clz) assembler macro, so it uses a 256 byte lookup table called _clz
The _clz table gets pulled in if you do 64 bit division.
This tiny change is the only place that we do long long division.
Changing to a shift saves 256 bytes of ram.
 2012-02-17 09:46:05 +00:00
Jason Short 026e4a6567 change constant to float 44330.0 2012-02-15 09:10:14 -08:00
Andrew Tridgell 804332c340 AP_Baro: fixed some signed/unsigned warnings 
and a potential bug on timer wrap
 2012-02-13 21:39:18 +11:00
justinbeech 69f1613f2c Uncommented cold temp compensation after testing. Fixed read throttle so read rate ends up nailing 100hz, not 90hz. minor commenting improvements. 2012-02-13 00:00:06 +00:00
Randy Mackay b7ce7bfe18 Arduino 1.0 - small fix to make AP_Baro_MS5611_test.pde compile under Arduino 1.0 2012-01-28 13:21:35 +09:00
Randy Mackay ed19c25a97 Arduino 1.0 - changed all #includes of "WProgram.h", "wiring.h" and "WConstants.h to "Arduino.h". 
Modified FastSerial's write function to return size_t (number of bytes written).
 2012-01-28 12:25:47 +09:00
Andrew Tridgell 897d9a1c0b baro: fixed an integer overflow issue at high altitudes 
the averaging array was using 16 bit numbers, but we are storing
numbers with 19 significant bits. That caused overflow at high
altitude, and some very interesting altitude graphs!

Thanks to Michael Oborne for spotting this in a log
 2012-01-14 19:51:35 +11:00