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defmt-rtt

v1.3.0 Stable

Transmit defmt log messages over the RTT (Real-Time Transfer) protocol

MIT OR Apache-2.0 Edition 2021
Embedded developmentNo standard library #knurling#defmt#defmt-transport

Quick Verdict

  • Actively maintained (updated 10d ago)
  • Stable API (1.x for 5+ years)
  • Trusted by 542 crates
  • Team maintained (4 owners)
  • Tiny footprint (10KB, 2 deps)

Security

Checking security advisories...
Downloads
2.6M
Dependents
542
Releases
13
Size
10KB

Deep Insights

📈
Strong growth momentum

180.8K downloads in the last 30 days (6.0K/day), up 21% from the previous period.

🔗
Moderate adoption

542 crates depend on defmt-rtt. Reasonable ecosystem adoption, though not yet a core dependency.

👤
Prolific maintainer

The primary maintainer publishes 92 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.

Stable for 5+ years

The API has been stable (1.x) for over 5 years with 13 releases. This level of maturity means you can depend on it without worrying about breaking changes.

🪶
Minimal dependencies

Only 2 direct dependencies. Lean dependency tree means faster builds and lower supply chain risk.

📐
Compact crate

At 10KB, defmt-rtt is lightweight. Small crate size correlates with focused, well-scoped functionality.

🌟
Used by top crates

Notable dependents include stm32f4xx-hal, rp-pico, ssd1306, persistent-buff, stm32f3xx-hal. When high-quality crates choose defmt-rtt, it's a strong quality signal.

Health Breakdown

Maintenance 16/25

Recency, release consistency, active ratio

Quality 21/25

Yanked ratio, deps, size, maturity, features

Community 18/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 10/15

Docs, repo, license, metadata

Download Trend

Daily downloads · last 90 days
5K/day avg-21%
02K4K6K8K4/265/146/16/197/77/24

Top Dependents

Version Adoption

v1.1.0
25%
v0.4.1
22%
v0.4.2
21%
v0.4.0
21%
v1.0.0
11%

Release Timeline

10 releasessince 2021
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2021
1
2022
2
2023
2024
1
2025
4
2026
2
Less
More

Feature Flags

drop-on-contentiondisable-blocking-mode

README

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Maintainers

Dependencies
2
direct dependencies
Dependents
542
crates depend on defmt-rtt

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