3589fceab3
Implement lower-half PTP hardware clock operations (struct ptp_lowerhalf_s and struct ptp_ops_s) in the STM32 Ethernet driver and register it with the generic PTP clock framework (drivers/timers/ptp_clock.c) to expose /dev/ptp0. Supported operations: - adjfine: adjust PTP clock frequency in parts per billion (ppb) - adjphase: adjust PTP clock phase via hardware TSSTU - adjtime: shift PTP clock time by signed delta in nanoseconds - gettime: atomic double-read of hardware timestamp registers - settime: initialize hardware timestamp counter via TSSTI - getres: return 1 ns clock resolution Also fix a sign bug in stm32_eth_ptp_adjust() where uint64_t addend promoted negative ppb adjustments to unsigned, corrupting frequency trim for crystals running faster than nominal. Follow-up to #20148 per review recommendation to use the standard POSIX /dev/ptp0 character driver instead of custom socket ioctls. Assisted-by: Gemini:gemini-3.8-pro Signed-off-by: Daniel P. Carvalho <danieloak@gmail.com> |
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| cmake | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| dummy | ||
| fs | ||
| graphics | ||
| include | ||
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| mm | ||
| net | ||
| openamp | ||
| pass1 | ||
| sched | ||
| syscall | ||
| tools | ||
| video | ||
| wireless | ||
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| AUTHORS | ||
| CMakeLists.txt | ||
| CONTRIBUTING.md | ||
| INVIOLABLES.md | ||
| Kconfig | ||
| LICENSE | ||
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| NOTICE | ||
| README.md | ||
| ReleaseNotes | ||
Apache NuttX is a real-time operating system (RTOS) with an emphasis on standards compliance and small footprint. Scalable from 8-bit to 64-bit microcontroller environments, the primary governing standards in NuttX are POSIX and ANSI standards. Additional standard APIs from Unix and other common RTOSs (such as VxWorks) are adopted for functionality not available under these standards, or for functionality that is not appropriate for deeply-embedded environments (such as fork()).
For brevity, many parts of the documentation will refer to Apache NuttX as simply NuttX.
Getting Started
First time on NuttX? Read the Getting Started guide! If you don't have a board available, NuttX has its own simulator that you can run on terminal.
Documentation
You can find the current NuttX documentation on the Documentation Page.
Alternatively, you can build the documentation yourself by following the Documentation Build Instructions.
The old NuttX documentation is still available in the Apache wiki.
Supported Boards
NuttX supports a wide variety of platforms. See the full list on the Supported Platforms page.
Contributing
If you wish to contribute to the NuttX project, read the Contributing guidelines for information on Git usage, coding standard, workflow and the NuttX principles.
License
The code in this repository is under either the Apache 2 license, or a license compatible with the Apache 2 license. See the License Page for more information.