Difference between revisions of "Serial unit"
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==When timeout starts== | ==When timeout starts== | ||
| − | Q: I'm trying to figure out | + | Q: I'm trying to figure out when the timeout timer in SerRead/SerReadTimeout starts. |
A (by FPC developer Christo Crause): FPC uses the OS provided functionality to interact with the serial port. On Windows the timeout seems to start when the read request is made - [https://learn.microsoft.com/en-us/previous-versions/ff547486(v=vs.85) Link]. On POSIX (at least Linux) it depends on the specific set of flags specified , scroll down to the discussion on canonical/noncanonical mode for the details - [https://linux.die.net/man/3/termios Link]. | A (by FPC developer Christo Crause): FPC uses the OS provided functionality to interact with the serial port. On Windows the timeout seems to start when the read request is made - [https://learn.microsoft.com/en-us/previous-versions/ff547486(v=vs.85) Link]. On POSIX (at least Linux) it depends on the specific set of flags specified , scroll down to the discussion on canonical/noncanonical mode for the details - [https://linux.die.net/man/3/termios Link]. | ||
Revision as of 16:24, 19 September 2022
Unit Serial in FPC supports work with serial port. It provides many Ser* functions.
When timeout starts
Q: I'm trying to figure out when the timeout timer in SerRead/SerReadTimeout starts.
A (by FPC developer Christo Crause): FPC uses the OS provided functionality to interact with the serial port. On Windows the timeout seems to start when the read request is made - Link. On POSIX (at least Linux) it depends on the specific set of flags specified , scroll down to the discussion on canonical/noncanonical mode for the details - Link.
