nuttx

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Migrate build system to CMake

33

## Summary This is an incomplete work in progress. The PR is against a separate branch so this can eventually be merged and then finished incrementally on that branch. Note...

protobits

USBNSH is not working on STM32F4Discovery

7

I decided to help Ed to fix to USB issue #6531 and decided to test the USB on STM32F4Discovery board. Unfortunately version 10.3.0, didn't work, then I decided to test...

acassis

Why RISC-V up_testset use lr/sc and not amoswap?

5

The RISC-V supports "Atomic Memory Operations" instructions. Seems like up_testset can be implemented with the less number of instruction using `amoswap.w.aq`/`amoswap.w.rl` than current implementation that use `lr`/`sc` instructions.

pkarashchenko

sched/semaphore: fix priority boost restoration for priority inheritance

24

## Summary Attempt to fix priority boost restoration in case of priority inheritance Details in https://github.com/apache/incubator-nuttx/issues/6310 ## Impact Improve priority inheritance. ## Testing Priority inheritance ostest pass on SAMe70-QMTECH board

pkarashchenko

EHCI: *_cancel() failed to free qH and qTD

2

I use SAMA5D2 EHCI host driver with USB CDC-ACM device (AMTelecom AML574). Calling `open()` and `read()` for device (/dev/ttyACM0) works good. But when calling `close()`, `DRVR_TRANSFER(for bulkin EP)` in reading...

taikoyaP

Export Make.defs broken, missing HEAD_OBJ, LDENDGROUP, LDSTARTGROUP

2

From the e-mail reported on 2021-07-19 [NuttX export cannot set some variables (i.e. LDSTARTGROUP LDENDGROUP)](https://lists.apache.org/thread/1mh1dpps9v4bt6sq26oxrx2nbn9xrg2s) I have found cause for broken/empty LDENDGROUP and LDSTARTGROUP in exported Make.defs ``` nuttx-export-10.1.0-RC1/scripts/Make.defs ```...

ppisa

## Summary - expose nxsched_ set/get APIs as syscalls - move corresponding sched_ and pthread_ set/get APIs to libc - remove _SCHED_XXXX macro based interface - reduce number of system...

pkarashchenko

Remove errno accesses from the OS

7

## Propsition Nothing inside of the OS should access the per-thread `errno` variable. Why? 1. This is a improper separation of responsibilities. `errno` is strictly a feature of the user-space...

patacongo

Adding ptrace support to allow for more run time debug support

8

This is something that I have mulled about a few times. It would really be nice to be able to eventually add a GDB server stub for NuttX to improve...

btashton

nuttx/mutex: do not use non-nx interface in kernel except libs

9

## Summary The https://github.com/apache/incubator-nuttx/pull/6320 redirected nxmutex used in kernel to `sem_` API family in case of `CONFIG_BUILD_FLAT`. That is not correct. This PR is created just for discussion and just...

pkarashchenko