WebMay 4, 2024 · On (modern) Linux systems the receive and transmit system buffers are usually cleared when the serial port/terminal is opened. That may not be the case with Windows. flush () " Flush of file like objects. In this case, wait until all data is written." In POSIX termios jargon, this function is known as tcdrain (). WebMar 8, 2013 · You're right, I wasn't doing what I thought I was. I did now replace tcflush() with tcdrain() and the problem seems almost solved, I say almost because there're still some packets where the inter-byte is higher than ~2.5ms (they appear in let's say 10% of cases). Regarding the BREAK sequence, this is the only way I know for doing this …
termios(3) - Linux manual page - Michael Kerrisk
Webtcdrain () waits until all output written to the object referred to by fd has been transmitted. tcflush () discards data written to the object referred to by fd but not transmitted, or data received but not read, depending on the value of queue_selector: TCIFLUSH. flushes data received but not read. TCOFLUSH. WebA tty device disconnection will hangup the tty causing the tty_wait_until_sent loop to wake-up, but if the subsequent call to chars_in_buffer reports an error instead of zero, the loop … radici paka octavia
unix.cpp uses tcdrain which has the potential to hang …
WebMay 4, 2024 · Modify tcdrain () (or related code/parameters) to actually wait for the last character to be sent by the hardware, or wait for a period more closely related to the … WebThis function may be invoked from a background process; however, the terminal attributes may be subsequently changed by a foreground process. tcsetattr () sets the parameters associated with the terminal (unless support is required from the underlying hardware that is not available) from the termios structure referred to by termios_p. … Web> > tcdrain blocks on ptys since 2.6.27; at least 2.6.26 returns in a timely > > manner. The following test case reproduces the bug, and hangs only on > > affected kernels. Examination of 2.6.26 and 2.6.27 suggests the ioctl > > used by tcdrain underwent a rewrite for 2.6.27, and thus fixing this bug > > is beyond my capabilities at this time. > radici padova ristorante