Messages in this thread | | | From | Grant Edwards <> | Subject | Re: serial: custom baud rate | Date | Mon, 14 May 2018 15:36:56 +0000 (UTC) |
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On 2018-05-13, Alan Cox <gnomes@lxorguk.ukuu.org.uk> wrote: > On Thu, 3 May 2018 18:27:14 +0000 (UTC) > Grant Edwards <grant.b.edwards@gmail.com> wrote: > >> On 2018-05-03, Muni Sekhar <munisekharrms@gmail.com> wrote: >> >> > If I need to set a custom baud rates(e.g. 14400, 128000, 256000), does >> > Linux serial framework has any supporting method? >> >> Sure, use the termios2 structure instead of the termios structure: >> >> #include <linux/termios.h> >> >> struct termios2 t; >> >> ioctl(fd, TCGETS2, &t) >> >> t.c_cflag &= ~CBAUD; >> t.c_cflag |= BOTHER; >> t.c_ispeed = baud; >> t.c_ospeed = baud; >> >> ioctl(fd, TCSETS2, &t) >> >> [Not all devices/drivers support termios2] > > That shouldn't be true - all devices get passed ispeed/ospeed and > everything in tree was using the correct fields as far as I could > tell last time I checked this
Yep, my mistake. It looks like the driver where I last ran into this was an old out-of-tree driver.
-- Grant Edwards grant.b.edwards Yow! Mary Tyler Moore's at SEVENTH HUSBAND is wearing gmail.com my DACRON TANK TOP in a cheap hotel in HONOLULU!
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