mjb/altos/src-avr, branch telescience

avr: Block interrupts while executing SPI slave code

2012-05-27T03:01:46+00:00

Any interrupts do very bad things to our SPI reliability. Block interrupts for the whole of the SPI slave ISR. Signed-off-by: Keith Packard

altos-avr: Include serial/flight in companion commands

2011-08-14T01:27:02+00:00

This lets TeleScience log these values so the log can be matched with a suitable TeleMetrum log. Signed-off-by: Keith Packard

altos: Report log format in the version command

2011-08-13T20:14:26+00:00

Cherry-pick from 8624213ee204bfdcb219c65b3618751d8278d9db This will make it easier to figure out what the contents of the flash should look like from altosui; the current 'guessing' mechanism will not scale to many more formats. Signed-off-by: Keith Packard

altos-avr: Store TM tick and state in log, get logging on/off working

2011-08-13T04:34:37+00:00

To sync TM and TS data after flight, store the TM tick data in the log along with the TM state. This should provide sufficient data to synchronize the two data streams. Use the TM state to enable/disable logging, log from boost to landing and otherwise do not log. Signed-off-by: Keith Packard

altos-avr: Completely replace the spi slave code

2011-08-12T11:41:19+00:00

Turns out the AVR we're using sucks at doing SPI slave. To get it running at a reasonable data rate, I had to completely gut the 'sensible' code and run everything from the ISR with interrupts disabled. Even with this, the maximum SPI clock rate is somewhere around 200kHz. That's due to the singled buffered nature of the transmit queue, the amount of time available between finishing one byte and starting the next is very very small. Signed-off-by: Keith Packard

altos-avr: Add SPI-slave companion support

2011-07-14T04:21:33+00:00

Listen on the SPI slave port for commands from TeleMetrum. Run logging during flight, based on flight state. Return recent data for telemetry. Signed-off-by: Keith Packard

src-avr: Improve speed of LCD transfers, add hex-code character input

2011-06-05T04:37:55+00:00

Use a delay loop instead of waiting for clock interrupts to get closer to maximum LCD update rate. Add \ escaped hex codes in output testing command. Signed-off-by: Keith Packard

src-avr: Add LCD driver for NHD-C0216CU-FN-GWB-3V display

2011-06-05T00:59:48+00:00

Initializes the Newhaven display and has a few simple commands to show some text. Signed-off-by: Keith Packard

src-avr: Run CPU at 8MHz, even with a 16MHz xtal

2011-06-05T00:58:51+00:00

This allows the Teensy to run at 3.3V. Signed-off-by: Keith Packard

altos: Make telescience reliably log only when told to

2011-05-24T21:10:01+00:00

Use a pull-up on telescience and tri-state input on telemetrum at boot time. Enable logging by pulling the TM output low and enabling as an output, disable by pulling the TM output high and switching back to input mode. Also, ignore pin state changes for 5 seconds at boot to give things a chance to settle down. Should work when both boards are powered up together. Signed-off-by: Keith Packard