Re: USB serial ports by serial number

> On 3 Oct 2019, at 17:41, Hans Petter Selasky wrote: > > On 2019-10-03 09:37, O'Connor, Daniel wrote: >>> On 3 Oct 2019, at 17:01, Hans Petter Selasky wrote: >>> On 2019-10-03 08:56, O'Connor, Daniel wrote: >>>> Most of USB-serial devices have "ve

Re: USB serial ports by serial number

> On 3 Oct 2019, at 17:01, Hans Petter Selasky wrote: > On 2019-10-03 08:56, O'Connor, Daniel wrote: >> Most of USB-serial devices have "very stable" serial number:) >> more than 50% have S/N "0123456789". > > It is also allowed to have no se

Re: USB serial ports by serial number

asic script modifications. Perhaps I should have made /dev/usbserialbysn and put symlinks in that. > Thanks. > > > чт, 3 жовт. 2019 о 05:56 O'Connor, Daniel пише: > Hi, > I have several USB serial ports on a machine and I don't want to rely on > attach order to get variou

USB serial ports by serial number

Hi, I have several USB serial ports on a machine and I don't want to rely on attach order to get various programs to talk to the correct serial port. I wrote the following devd script and shell script to create symlinks from cu.${sernum}/tty.${sernum} to the real device nodes. I post it here

Re: Is it a good idea to use a usb-serial adapter for PPS input? Yes, it is.

> On 8 Sep 2019, at 23:12, Konstantin Belousov wrote: >> I suppose it would be good to change it to the same structure as the feed >> forward clock stuff, that way it is much easier to change the number of >> hands at compile time.. >> > > The reason to not increase it by default is the

Re: Is it a good idea to use a usb-serial adapter for PPS input? Yes, it is.

> On 20 Aug 2019, at 11:37, O'Connor, Daniel wrote: > > > >> On 19 Aug 2019, at 17:09, O'Connor, Daniel wrote: >> I am going to try this diff but buildkernel is going to take a while... > > Was a lot faster cross building, so I installed it this morning: >

Re: Is it a good idea to use a usb-serial adapter for PPS input? Yes, it is.

> On 19 Aug 2019, at 17:09, O'Connor, Daniel wrote: > I am going to try this diff but buildkernel is going to take a while... Was a lot faster cross building, so I installed it this morning: [gps 1:56] ~ >uname -a FreeBSD gps 13.0-CURRENT FreeBSD 13.0-CURRENT #1 41a4c010326-c2621

Re: Is it a good idea to use a usb-serial adapter for PPS input? Yes, it is.

> On 6 Aug 2019, at 00:12, Ian Lepore wrote: > On Mon, 2019-08-05 at 15:28 +0930, O'Connor, Daniel wrote: >>> Most people are not worried about their kernel clock being 200 >>> microseconds off from UTC, even if they're using the PPS signal from a >>> GPS

Re: Is it a good idea to use a usb-serial adapter for PPS input? Yes, it is.

Hi Ian, Firstly, this is a very cool test - thank you for running it :) > On 3 Aug 2019, at 06:46, Ian Lepore wrote: > PPS(2) is an FTDI 232R, a USB 1.1 serial adapter, connected to a port > on a USB 2.0 hub that's connected to a USB 2.0 host port on the > Wandboard. > > PPS(3) is an FTDI

Re: USB transfers in device drivers

> On 3 May 2019, at 02:31, Hans Petter Selasky wrote: > > On 2019-05-02 13:38, O'Connor, Daniel wrote: >>> On 2 May 2019, at 20:33, Hans Petter Selasky wrote: >>> >>> On 2019-05-02 12:44, O'Connor, Daniel wrote: >>>>> On 2 May 2019, at 20:0

Re: USB transfers in device drivers

> On 2 May 2019, at 20:33, Hans Petter Selasky wrote: > > On 2019-05-02 12:44, O'Connor, Daniel wrote: >>> On 2 May 2019, at 20:02, Hans Petter Selasky wrote: >>> >>> On 2019-05-02 11:18, O'Connor, Daniel wrote: >>>> OK, thanks. >&

Re: USB transfers in device drivers

> On 2 May 2019, at 20:02, Hans Petter Selasky wrote: > > On 2019-05-02 11:18, O'Connor, Daniel wrote: >> OK, thanks. >> To be honest I would much prefer to work out why this particular hardware & >> software seem to drop the ball for such a long time - 50msec

Re: USB transfers in device drivers

> On 2 May 2019, at 18:06, Hans Petter Selasky wrote: > On 2019-05-02 10:22, O'Connor, Daniel wrote: >>> On 2 May 2019, at 06:15, Hans Petter Selasky wrote: >>> On 2019-05-01 10:34, O'Connor, Daniel wrote: >>>> I don't have a solid hypothesis for t

Re: USB transfers in device drivers

> On 2 May 2019, at 06:15, Hans Petter Selasky wrote: > On 2019-05-01 10:34, O'Connor, Daniel wrote: >> I don't have a solid hypothesis for the failures as yes but one thing I'd >> like to make sure is that the USB stack is keeping the USB hardware busy >> with pendin

USB transfers in device drivers

Hi, I have a device driver for a USB device (a custom Cypress FX2 based board) that is relatively simple - it uses the USB FIFO code to create 3 FIFOs (one bidirectional slow serial interface, one device->PC fast parallel interface from a hardware FIFO) plus a bunch of ioctls for getting the

Re: Digi Watchport/T temperature sensor as /dev/ttyU

> On 23 Jul 2016, at 02:05, O. Hartmann wrote: > > I tried to load any available USB serial port/adaptor driver available to > make this > sensor attach as a ttyU? as it does in Linux (/dev/ttyUSB), but no luck so > far. I'm not > familiar with serial consoles or