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64 Commits

Author SHA1 Message Date
Andrew Tridgell 70227d5d93 HAL_PX4: added scheduler performance counters 2013-01-24 15:04:57 +11:00
Andrew Tridgell 966b9b9b9c HAL_PX4: format panic messages with a newline 2013-01-23 16:54:44 +11:00
Andrew Tridgell 952df2fced HAL_PX4: new buffered storeage driver for microsd cards 
this does all IO in the timer thread, avoids writes that don't change
data, and does all writes in multiples of 128 byte chunks. This should
be about as friendly to SD cards as we can get.
 2013-01-23 16:37:40 +11:00
Andrew Tridgell 2a10727902 HAL_PX4: run timer thread as SCHED_FIFO 
this ensures it never yields to the main thread, which would break our
locking assumptions
 2013-01-23 09:21:50 +11:00
Andrew Tridgell 6ffa18fa61 HAL_PX4: rewrite UART driver to be much more efficient 
this does the IO in the timer thread, and uses buffers in the main
task to avoid system call costs in the flight code.

The cost of PX4 read and write system calls is quite high - about 10
to 15 usec. We can't afford to pay that per byte
 2013-01-22 21:22:01 +11:00
Andrew Tridgell 39e28d48c2 HAL_PX4: switched scheduler to use a pthread 
this allows the timer tasks to access file descriptors in the main APM
task, which makes writing PX4 device drivers much easier
 2013-01-21 13:54:09 +11:00
Andrew Tridgell 7c7a215934 HAL_PX4: fixes for new Scheduler API 2013-01-11 12:25:26 +11:00
Andrew Tridgell 5829d44a22 HAL_PX4: disable failsafe handler 
this won't work until we can set RC output values in timers
 2013-01-04 22:26:16 +11:00
Andrew Tridgell 9f423a24ad HAL_PX4: yield CPU in delay() 
this allows other apps to run
 2013-01-04 12:34:35 +11:00
Andrew Tridgell 1e69b88261 HAL_PX4: use write() in panic() 
this allows panic from the UARTDriver
 2013-01-03 21:11:37 +11:00
Andrew Tridgell b30fa6535b HAL_PX4: support reboot 2013-01-03 19:34:36 +11:00
Andrew Tridgell c6305b5876 HAL_PX4: rework Scheduler using hrt calls 
thanks to Julian Oes for the suggestion
 2013-01-03 13:15:57 +11:00
Andrew Tridgell 5053fb8acc HAL_PX4: implement atomic operations 2013-01-02 21:45:17 +11:00
Andrew Tridgell 5a70f3becf HAL_PX4: added a scheduler implementation 2013-01-02 21:39:26 +11:00