tree 1e2b6963842feb92ad20f4f9d22eecb588bdf083
parent d22abc169d4bfcc15c0a18a7c904e62afd22dd6f
author Alexei Frolov <frolv@google.com> 1610566319 -0800
committer CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com> 1610674388 +0000

pw_hdlc: Calculate frame size before writing

This updates the WriteUIFrame function to calculate the worst-case
encoded frame size in advance and not write any data if it exceeds
the stream's write limit.

Change-Id: I315a2a94dbf19d6f3d021ecdee66d5329313f1d9
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/29485
Reviewed-by: Wyatt Hepler <hepler@google.com>
Commit-Queue: Alexei Frolov <frolv@google.com>