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39 Commits

Author SHA1 Message Date
Andrew Tridgell 10b0ca7ea8 HAL_PX4: reduce the number of times we split up UART reads and writes 2014-10-09 12:29:25 +11:00
Andrew Tridgell 48247b6adc HAL_PX4: minimise usage of hrt_absolute_time() 2014-08-20 09:10:24 +10:00
Andrew Tridgell 0a20d0db60 HAL_PX4: prevent read past end of buffer 2014-08-19 10:08:17 +10:00
Andrew Tridgell a7d6a26bec HAL_PX4: fixed auto-flow control 
the 6 bytes written to break the radio out of bootloader broke
auto flowcontrol detection
 2014-05-19 22:02:39 +10:00
Andrew Tridgell 4e2e685d7a HAL_PX4: better fix for IFLOW on all ports 
the tcsetattr() call fails to apply the baudrate if the port has no
RTS pin and we ask for IFLOW. So just make a separate call.
 2014-02-12 17:47:23 +11:00
Andrew Tridgell b2cdd39a99 HAL_PX4: don't enable IFLOW on ports without flow control 
this should have been harmless, but breaks the GPS on Pixhawk. This
disables it until we work out why.
 2014-02-12 17:32:07 +11:00
Andrew Tridgell c5c1d1358a HAL_PX4: added automatic hardware flow control detection 
this allows us to detect if hardware flow control is not available and
automatically disable it
 2014-02-11 12:11:26 +11:00
Andrew Tridgell 3e637ac5d9 AP_HAL: added enable_flow_control() option in AP_HAL 2014-02-10 12:54:50 +11:00
Andrew Tridgell a95868e124 HAL_PX4: even larger tx buffer size for faster log transfer 2013-12-28 16:01:48 +11:00
Andrew Tridgell ff7004fcc5 HAL_PX4: use larger buffers on USB 2013-12-28 14:25:54 +11:00
Andrew Tridgell 0b25ff0a16 HAL_PX4: added uartD 2013-11-23 19:29:22 +11:00
Andrew Tridgell 24d1cf3bd6 HAL_PX4: don't check USB for data if not connected 2013-11-05 14:41:42 +11:00
Andrew Tridgell e34cc6dd9a HAL_PX4: added some UART debugging 
this may help to track down USB issues
 2013-10-13 12:43:25 +11:00
Andrew Tridgell ad30f8effa HAL_PX4: try to reopen UARTs if safety switch is disarmed 
this allows attaching to the USB port after power on

Pair-Programmed-With: Randy Mackay <rmackay9@yahoo.com>
 2013-10-05 15:47:28 +10:00
Andrew Tridgell 7067569103 HAL_PX4: fixed end() on UARTs 2013-09-29 12:04:36 +10:00
Andrew Tridgell 40af9ab674 AP_HAL_PX4: updates for new API 2013-09-22 12:22:05 +10:00
Andrew Tridgell 05b426c1fc HAL_PX4: use common printf implementation on UARTs 2013-09-21 14:23:52 +10:00
Andrew Tridgell 2340bb6220 PX4: use a minimum transmit buffer for UARTs of 512 bytes 
this avoids writes stalling on the GPS port. We can't afford this
memory on APM2, but we can on PX4, and it means that while the GPS is
blocking at startup it doesn't cause any scheduler slips
 2013-08-30 13:01:33 +10:00
Andrew Tridgell 0916388ab5 HAL_PX4: retry opening UARTs up to 5 times 
this seems to help a lot with the USB port on PX4
 2013-07-11 13:50:23 +10:00
Andrew Tridgell 8766e86091 HAL_PX4: fixed blocking bulk writes to UARTs 
this fixes a problem with uBlox initialisation on PX4
 2013-03-20 15:41:52 +11:00
Andrew Tridgell 14911eff6c HAL_PX4: added a (disabled) trick for handling blocking ttyACM0 
this doesn't work yet, but is worth having for debugging
 2013-03-20 11:20:43 +11:00
Andrew Tridgell c373429a6e HAL_PX4: fixed a buffer handling bug 
BUF_SPACE() was badly buggy, which could lead to memory corruption
 2013-02-20 18:15:56 +11:00
Andrew Tridgell 54e7bce75e HAL_PX4: cope with O_NONBLOCK not working in NuttX on ttyACM0 
writes will block anyway, which clags up APM
 2013-02-19 12:02:46 +11:00
Andrew Tridgell fc8065b50f HAL_PX4: added UART performance counters 2013-01-24 15:04:57 +11:00
Andrew Tridgell f72b532405 HAL_PX4: ensure all writes go via buffers 
this prevents output corruption by direct fd writes
 2013-01-23 09:22:51 +11:00
Andrew Tridgell 89cb3fbd61 HAL_PX4: fixed blocking IO in UART driver 2013-01-22 21:52:21 +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 546ed19ffc HAL_PX4: improved efficiency of serial writes 
use buffer at a time writes when possible, and use O_NONBLOCKING to
avoid txspace()
 2013-01-22 10:50:26 +11:00
Andrew Tridgell 18cfd29f2f HAL_PX4: added a read buffer to the UART driver 
this lowers the average cost of reading bytes by a large amount, and
prevents the GPS driver from chewing lots of time.
 2013-01-22 10:34:04 +11:00
Andrew Tridgell 76092eb590 AP_HAL: remove unused peek() interface from UART drivers 
this is a bit tricky to implement on some platforms, and is unused
anyway
 2013-01-16 14:43:18 +11:00
Andrew Tridgell 64a8a8e4c9 HAL_PX4: fixed using mavlink on the console 
this disables the ONLCR termios flag, which was injecting extra
carriage returns in the output
 2013-01-14 16:21:27 +11:00
Andrew Tridgell 30447018d5 HAL_PX4: handle %S in format strings 2013-01-05 08:10:07 +11:00
Andrew Tridgell 08d518e07f HAL_PX4: switch to libc vdprintf() 
vdprintf has now been added to NuttX
 2013-01-05 08:01:10 +11:00
Andrew Tridgell 44837a11f2 HAL_PX4: added baudrate support to UART driver 2013-01-04 19:42:30 +11:00
Andrew Tridgell 155fca8a4b HAL_PX4: make APM sketches into daemons 
this also moves uartA onto UART5, allowing ttyS0 for nsh
 2013-01-04 11:14:35 +11:00
Andrew Tridgell d492b72a2c HAL_PX4: use /dev/ttyS0 for uartA 
this also changes txspace and available to use FIONWRITE and FIONREAD
 2013-01-03 21:12:10 +11:00
Andrew Tridgell c6c336a6e8 HAL_PX4: implement peek() and available() 
keep a 1 byte buffer
 2013-01-03 17:27:53 +11:00
Andrew Tridgell d9d5eb52bf HAL_PX4: use fd IO instead of stdio 
this allows for hal console output from within timers, which is very
handy for debugging
 2013-01-03 13:16:41 +11:00
Andrew Tridgell 9373a4e5b3 HAL_PX4: added a uartA driver 
uses stdin/stdout for IO
 2013-01-03 11:03:05 +11:00