Decision Workspace
defmt-ringbuf vs defmt-rtt vs defmt-semihosting
Side-by-side comparison of Rust crates
53
defmt-ringbuf
stablev1.0.0
defmt persistent ring buffer logger
66
defmt-rtt
growingv1.1.0
Transmit defmt log messages over the RTT (Real-Time Transfer) protocol
49
defmt-semihosting
growingv0.3.0
Transmit defmt log messages over the Cortex-M Semihosting protocol
Core Metrics
| defmt-ringbuf | defmt-rtt | defmt-semihosting | |
|---|---|---|---|
| Health Score | 53 | 66 | 49 |
| Total Downloads | 2.8K | 2.0M | 7.0K |
| 30d Downloads | 30 | 141.6K | 444 |
| Dependents | 0 | 483 | 1 |
| Releases | 4 | 11 | 3 |
| Last Updated | 7d ago | 168d ago | 360d ago |
| Age | 3y | 5y 4m | 1y 4m |
Health Breakdown
defmt-ringbuf
Maintenance
16
Quality
18
Community
5
Popularity
4
Documentation
10
defmt-rtt
Maintenance
10
Quality
20
Community
18
Popularity
8
Documentation
10
defmt-semihosting
Maintenance
7
Quality
15
Community
12
Popularity
5
Documentation
10
Technical Details
| defmt-ringbuf | defmt-rtt | defmt-semihosting | |
|---|---|---|---|
| Version | 1.0.0 | 1.1.0 | 0.3.0 |
| Stable (≥1.0) | ✓ Yes | ✓ Yes | ✗ No |
| License | MIT OR Apache-2.0 | MIT OR Apache-2.0 | MIT OR Apache-2.0 |
| Dependencies | 3 | 2 | 4 |
| Crate Size | 10KB | 7KB | 5KB |
| Features | 2 | 1 | 1 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2021 | 2021 | 2021 |
| MSRV | — | — | — |
| Owners | 1 | 4 (team) | 4 (team) |
Links
Quick Verdict
- •defmt-rtt leads with a health score of 66/100, but none of the options score above 80.
- •defmt-rtt is depended on by 483 crates — strongest ecosystem trust.
- •defmt-semihosting is pre-1.0 — API may change.