Primitives
The following primitive types are available:
| type hint | name |
|---|---|
=bool | boolean |
={i,u}{8,16,32,64,128,size} | standard integer types |
=f{32, 64} | 32-bit / 64-bit floating point type |
=[u8; N] | byte array |
=[u8] | byte slice |
=str | string slice |
They can be used like this:
#![allow(unused)]
fn main() {
extern crate defmt;
let enabled = false;
let ready = false;
let timeout = false;
// arguments can be compressed into a single byte
defmt::info!(
"enabled: {=bool}, ready: {=bool}, timeout: {=bool}",
enabled, ready, timeout,
);
let x = 0u16;
// arguments will be type checked
defmt::trace!("{=u16}", x);
// ^ must have type `u16`
}Additionally there are some special types:
| type hint | name |
|---|---|
=M..N | Bitfields |
=istr | Interned Strings |
=[?] | Format slices |
=[?; N] | Format arrays |
Read more about them in the following chapters.