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2 Commits

Author SHA1 Message Date
Wyatt Hepler
8a823ceebb Size report for pw::string::Format 
Add size report comparing pw::string::Format to std::snprintf.

Report with arm-none-eabi-gcc at -Os:

            Using pw::string::Format instead of snprintf
            ────────────────────────────────────────────
┌────────────────────────────┬───────────┬────────┬───────┬────────┐
│            Label           │  Segment  │ Before │ Delta │  After │
├════════════════════════════┼═══════════┼════════┼═══════┼════════┤
│    One string, return size │ SEG FLASH │  2,840 │   +80 │  2,920 │
├────────────────────────────┼───────────┼────────┼───────┼────────┤
│ Ten strings, handle errors │     (all) │ (same) │     0 │ (same) │
├────────────────────────────┼───────────┼────────┼───────┼────────┤
│   Fifty calls, same buffer │ SEG FLASH │  3,816 │   -72 │  3,744 │
└────────────────────────────┴───────────┴────────┴───────┴────────┘

Change-Id: Id484530320b0334cddf676a49ad79444fbbbde9b
 2019-11-19 12:58:31 -08:00
Armando Montanez
a69244e4c1 Add stm32f429i-disc1 target and pw_dumb_io 
Adds both the stm32f429i-disc1 target and a pw_dumb_io uart-based
backend.

Change-Id: If24379118fc2877485653d61ca66ceeb59ef920a
 2019-11-16 00:14:52 +00:00