also, flatten the workspace into a single crate. I forget what the original reason for the workspace
was -- I think it was added because `cargo t -p testsuite` is nicer than running
`cargo t --test $filename` N times. However, a single crate removes the need to repeat the list of
dependencies in `testsuite/Cargo.toml`
also, document the two sets of tests included with the template and how to run them in the README
file
* bump defmt to v0.3
remove Cargo features which are no longer needed
* remove `timestamp!`
it's no longer mandatory and a monotonic counter does not add much value given that `defmt-rtt`
works by disabling interrupts so one won't see logs out of order anyways (which would the case for a
lock-free multi-channel `Logger`)
* use println! in most the examples
so that all examples print something when `DEFMT_LOG` is unset
* make overflow example terminate in less steps
also include an estimate of the stack pointer to show the stack grows downwards towards the RAM
boundary
Cargo doc says:
> Note that when using the cargo test and cargo bench commands, the test/bench profiles only apply to the final test executable. Dependencies will continue to use the dev/release profiles.
So with the current settings, `cargo test` optimizes all dependencies but not the top level
crate (e.g. `test/foo.rs`)
This commit adds optimizations to the last `rustc` invocation of `cargo test`. This results in a 6%
reduction in binary size when doing `cargo test` on our sample test file.
Jorge AparicioandGitHub
Johann HemmannandGitHub
Jonas SchievinkandGitHub
Andres VahterandGitHub