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Tom Payne cabba82f75 windows: use uint32 for serial comm flags for consistency 
This is a follow-up to https://go-review.googlesource.com/c/sys/+/572295
and specifically the comment
https://go-review.googlesource.com/c/sys/+/572295/comment/a00e1a2e_e3b01666/.

All other structs and methods us uint32 in golang.org/x/sys/windows
for flag bitmasks, so make the serial communication structs use uint32
to be consistent with the rest of the package.

As a side effect the DTR_CONTROL_* and RTS_CONTROL_* constants are
updated to reflect the positions of the bits in the 32-bit flags.

Change-Id: Ie19774a8ef5411d7df1e5b0d36806aa1d401fa86
GitHub-Last-Rev: bc93d94a45ae36676c259ce534361ccff7b185de
GitHub-Pull-Request: golang/sys#189
Reviewed-on: https://go-review.googlesource.com/c/sys/+/575635
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Than McIntosh <thanm@google.com>
 2024-04-04 14:40:38 +00:00
Tom Payne 1a50d9738b windows: add serial comm functions 
Serial ports are still widely used to communicate with a large range of
devices.

This change adds the remaining functions described in "Serial
Communications in Win32", enabling Go applications and libraries to be
written that support the full set of serial port functionality on
Windows.

x/sys/unix already has equivalent functionality through termios.

See https://learn.microsoft.com/en-us/previous-versions/ms810467(v=msdn.10).

Change-Id: I57f9ed6b7dbcc2331f740bd95b6483f141b0ad6f
GitHub-Last-Rev: 0a5a7441ce0091ed59daa72eaa739433310b012b
GitHub-Pull-Request: golang/sys#187
Reviewed-on: https://go-review.googlesource.com/c/sys/+/572295
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
 2024-04-02 01:45:51 +00:00