mjb/altos/src/util, branch megametrum-test

altos: Add conversion between Pa and meters

2012-05-19T03:19:01+00:00

To be used with the MS5607 which generates data in calibrated units. Signed-off-by: Keith Packard

altos: Remove debug printf from cc1111 check-stack script

2012-04-14T21:04:29+00:00

Signed-off-by: Keith Packard

altos: Check for cc1111 flash overflow

2012-04-10T05:25:13+00:00

The linker is supposed to do this, but it ignores the static initializer data added after the code. Signed-off-by: Keith Packard

altos: Check pdata+xdata memory usage during build

2011-11-13T02:37:53+00:00

The sdcc linker doesn't check the sum of pdata+xdata memory usage, it only ensures that xdata itself is small enough. This doesn't keep xdata below the end of usable ram on the cc1111 though (0xfe000). Fix up the check-stack program to also make sure all of xdata fits in available memory. Signed-off-by: Keith Packard

altos/avr: Must leave space for init stack in ram

2011-10-12T00:57:32+00:00

The stack used during system initialization lives at the top of RAM, so leave some space for that. Signed-off-by: Keith Packard

altos: Improve TM v1.0 apogee estimate

2011-10-09T04:23:16+00:00

v1.0 boards have noisy accelerometer data caused by interactions between RF transmission and the accelerometer measurements; this noise generates a negative bias in the accelerometer readings. The net effect is that the estimated speed is lower than the actual speed, causing early an apogee estimate. By increasing the sigma value for accelerometer data, the kalman filter 'trusts' the acceleration data less, putting more weight on the barometer data. This causes the estimated time of apogee to be closer to the correct value. This reduces the response to changes in acceleration. This new value is applied solely to TeleMetrum v1.0 boards. v1.1 boards correct for this error, and hence can use the correct sigma value for the accelerometer. Signed-off-by: Keith Packard

altos: Fix make-kalman to run under dash

2011-09-22T05:57:06+00:00

Dash can't deal with >&, so use the old-school > file 2>&1 Signed-off-by: Keith Packard

fix bashism that prevents building with /bin/sh->/bin/dash

2011-09-21T22:42:52+00:00

altos: Integrate telescience support

2011-08-27T03:56:25+00:00

Adds a few drivers including an LCD driver Signed-off-by: Keith Packard

altos: Restructure altos build to prepare for multi-arch support

2011-08-26T03:49:11+00:00

Split out sources into separate directories: core: architecture and product independent bits cc1111: cc1111-specific code drivers: architecture independent drivers product: product-specific sources and Makefile fragments util: scripts for building stuff This should have no effect on the built products, but testing is encouraged Signed-off-by: Keith Packard