tty is likely set in non-blocking mode -- that may lead to EOF storm. On Fri, May 27, 2016 at 4:37 PM, Tim Caswell <[email protected]> wrote:
> You can maybe try to use the pipe interface as it accepts arbitrary file > descriptors. That's what I use to create pty's in luvit. > > https://luvit.io/blog/pty-ffi.html > > On Fri, May 27, 2016 at 12:52 AM, Jörg Krause <[email protected] > > wrote: > >> Many thanks for the link! I think fs_read() does not work for Linux >> serial ports as underlying read() system call reads EOF from the serial >> interface. >> >> If I try to use a Luvits ReadStream interface, the 'end' callback is >> called before I receive any data. >> >> So, lets hope there will be support for serial ports in libuv soon. >> >> On Wednesday, May 25, 2016 at 5:46:41 PM UTC+2, Tim Caswell wrote: >>> >>> I don't have any idea what's wrong, but several of us have been trying >>> to get serial support (or at least the ability) into upstream libuv, you >>> can see much of the history at https://github.com/libuv/libuv/pull/484 >>> >>> On Wed, May 25, 2016 at 6:15 AM, Jörg Krause <[email protected]> >>> wrote: >>> >>>> Hi, >>>> >>>> I am trying to read data from a serial port using Luvit. My simple >>>> example is running, however, I have an issue with fs_read() as it calls the >>>> callback function even if no data are received. >>>> >>>> This is my example: >>>> https://gist.github.com/joerg-krause/cba5a56577a0483ceb8ea4ecda5ff0ba >>>> >>>> This is the output: >>>> >>>> # luvit main.lua >>>> '' >>>> '' >>>> '' >>>> '' >>>> '' >>>> >>>> My problem with this issue is that it consumes much more CPU cycles on >>>> my embedded Linux system than reading from "/dev/input/event0". >>>> >>>> Any ideas what's wrong here? >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "luvit" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> -- >> You received this message because you are subscribed to the Google Groups >> "luvit" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. >> > > -- > You received this message because you are subscribed to the Google Groups > "luvit" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "luvit" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
