c7d0358c41
The existing clock synchronization code has two flaws: intermittent transmission latency during get_status requests can cause the estimated clock to be too low, and the estimated clock calculation did not take into account possible clock drift between samples. The former could potentially lead to "Timer too close" errors and the latter could potentially lead to "Move queue empty" errors. Rework the code to avoid the above problems. It's not necessary to estimate the micro-controller clock as an excellent estimate is reported by the micro-controller (via the CLOCK_FREQ constant). Account for a small drift from the reported value, and check on each sample if the drift exceeds the expected limits. With a good starting estimated clock, only the offset needs to be calculated. Use previous offsets (and the estimated clock) in calculation of new offsets to avoid intermittent latency from badly skewing the results. Finally, add an additional time offset of one millisecond to account for any minor inaccuracies. Signed-off-by: Kevin O'Connor <kevin@koconnor.net> |
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| docs | ||
| klippy | ||
| lib | ||
| scripts | ||
| src | ||
| .gitignore | ||
| COPYING | ||
| Makefile | ||
| README.md | ||
README.md
Welcome to the Klipper project!
This project implements a 3d-printer firmware. There are two parts to this firmware - code that runs on a micro-controller and code that runs on a host machine. The host software does the work to build a schedule of events, while the micro-controller software does the work to execute the provided schedule at the specified times.
See the features document to find out why you should use Klipper. To begin using Klipper start by installing it.
There is also developer documentation available.
License
Klipper is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
Klipper is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with Klipper. If not, see http://www.gnu.org/licenses/.