Decision Workspace
rp-pps vs nmeasis vs gnssdo
Side-by-side comparison of Rust crates
48
rp-pps
experimentalv0.1.0
RP2040/RP2350 PIO building blocks for a GNSS 1PPS timebase, plus NMEA time ingestion: hardware edge-timestamp capture, steerable 1PPS output, NMEA framing/parsing, and PPS↔UTC-second pairing. HAL-agnostic core (host-testable) with thin embassy-rp / rp2040-hal backends.
52
nmeasis
experimentalv26.4.1
A memory-safe NMEA 0183 parser with a C FFI
47
gnssdo
experimentalv0.1.0
no_std, HAL-agnostic GNSS-PPS-disciplined clock & holdover core (GPSDO): crystal frequency (ppb) estimation, PPS edge tracking, and an output phase-lock servo. Integer-only, zero-dependency.
Core Metrics
| rp-pps | nmeasis | gnssdo | |
|---|---|---|---|
| Health Score | 48 | 52 | 47 |
| Total Downloads | 19 | 38 | 24 |
| 30d Downloads | 0 | 0 | 0 |
| Dependents | 1 | 0 | 2 |
| Releases | 1 | 2 | 1 |
| Last Updated | 8d ago | 101d ago | 8d ago |
| Age | 8d | 3m | 8d |
Health Breakdown
rp-pps
Maintenance
12
Quality
15
Community
7
Popularity
2
Documentation
12
nmeasis
Maintenance
12
Quality
19
Community
6
Popularity
2
Documentation
13
gnssdo
Maintenance
12
Quality
14
Community
7
Popularity
2
Documentation
12
Technical Details
| rp-pps | nmeasis | gnssdo | |
|---|---|---|---|
| Version | 0.1.0 | 26.4.1 | 0.1.0 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✗ No |
| License | MIT | MIT OR Apache-2.0 | MIT |
| Dependencies | 9 | 7 | 1 |
| Crate Size | 42KB | 30KB | 75KB |
| Features | 5 | 8 | 0 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2024 | 2024 | 2024 |
| MSRV | 1.87 | — | 1.87 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •nmeasis leads with a health score of 52/100, but none of the options score above 80.
- •rp-pps, gnssdo are pre-1.0 — API may change.