1 stable release
1.0.0 | Mar 21, 2024 |
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#50 in #log-format
63 downloads per month
Used in l0g
6KB
l0g
Opinionated l0gging facade meant for the no_std
libraries that are also sometimes used in a std
context.
Overview
Logging facilities differ depending on the environment, especially between no_std
and std
. This facade allows to delegate the decision which l0gging implementation shall be used to the top-level application.
Any call to l0g::{error,warn,info,debug,trace}
turns into a
- noop when no feature is set
log::{error,warn,info,debug,trace}
from the log crate whenlog
feature is setdefmt::{error,warn,info,debug,trace}
from the defmt crate whendefmt
feature is set
Moreover, proc-macro is provided to generalize over which formatting implementation should be used
#[l0g::format]
struct MyStruct {
value: u8
}
turns into
#[derive(core::fmt::Debug)]
struct MyStruct {
value: u8
}
if log
feature is used or
#[derive(defmt::Format)]
struct MyStruct {
value: u8
}
if defmt
feature is used.
This allows a {:?}
formatting to work, regardless of which logging implementation is chosen.
Usage
In the Cargo.toml
of your libraries just say
l0g = "1"
In the no_std
top-level application specify the dependency with the defmt
feature. For how to make defmt
work, take a look into its respective documentation.
l0g = { version = "1", features = ["defmt"] }
In the std top-level application specify the dependency with the log
feature. For how to make log
work, take a look into its respective documentation.
l0g = { version = "1", features = ["log"] }
Dependencies
~275–730KB
~17K SLoC