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| author | Eric S. Raymond <esr@thyrsus.com> | 2005-05-21 18:04:05 +0000 |
|---|---|---|
| committer | Eric S. Raymond <esr@thyrsus.com> | 2005-05-21 18:04:05 +0000 |
| commit | 585545df8236b895386a070f0cf89910ec0639ff (patch) | |
| tree | 97d80c77317d942b07f0ba732448c1e5f581f315 /TODO | |
| parent | 6d901828167914d67192f97e6fd93b0d33077b6f (diff) | |
| download | gpsd-585545df8236b895386a070f0cf89910ec0639ff.tar.gz | |
Restart the "Things not to do" list.
Diffstat (limited to 'TODO')
| -rw-r--r-- | TODO | 26 |
1 files changed, 1 insertions, 25 deletions
@@ -12,26 +12,6 @@ I don't know if he has checked out SVN head recently. ** To do: -*** Set FIFO threshold to 1 to reduce jitter in serial-message times - -This can matter if you're using gpsd as a time reference. - -Rob Janssen <gpsd@xs4all.nl>: ->>> Setting the FIFO threshold to 1 can improve things. ->> ->> How does one do this? -> ->#include <linux/serial.h> -> ->use ioctl TIOCGSERIAL to get a struct serial_struct filled with the ->settings of the UART, modify what you want, and write it back using ioctl ->TIOCSSERIAL. -> ->Hmmm, now that I check this in the kernel source it does not seem to be ->possible to set the receive FIFO size from a user program, only the ->transmit FIFO. However it appears that setting it to 1 will also disable ->the receive FIFO. You'll have to experiment. - *** Hotplug interface problems The hotplug interface works pretty nicely for telling gpsd which @@ -74,11 +54,7 @@ BUS="usb" SYSFS{vendor}="1163" SYSFS{product}="0100" \ HOTPLUG="/usr/bin/gps-probe" More generally, the hotplug code we have is Linux-specific. OpenBSD -(at least) features a hotplug daemon with similar capabilities. There -has been some debate about going to the cross-platform libusb library -to do device scanning, but this would create a complex dependency that -gpsd doesn't now gave, and bring more complexity on board than is -probably desirable. +(at least) features a hotplug daemon with similar capabilities. *** The mess near error modeling |