pw_hex_dump

Handy hexdump utilities

Stable C++17

Sometimes on embedded systems there’s a desire to view memory contents when debugging various issues. While in some cases this can be done by attaching an in-circuit debugger of some kind, form-factor hardware might not have this as an option due to size constraints. Additionally, there’s often quite a bit more setup involved than simply adding a print statement.

A common practice to address this is setting up print statements that dump data as logs when a certain event occurs. There’s often value to formatting these dumps as human readable key-value pairs, but sometimes there’s a need to see the raw binary data in different ways. This can help validate in memory/on flash binary structure of stored data, among other things.

pw_hex_dump is a handy toolbox that provides utilities to help dump data as hex to debug issues. Unless otherwise specified, avoid depending directly on the formatting of the output as it may change (unless otherwise specified). With that said, the FormattedHexDumper strives to be xxd compatible by default.