Apache NuttX is a mature, real-time embedded operating system (RTOS) https://nuttx.apache.org/

embeddedmcumicrocontrollernuttxreal-timertos

patacongo e544b5c58c Add support for calling to and returning from signal handlers in in user-mode threads ... git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5750 42af7a65-404d-4744-a932-0658087f49c3		2013-03-17 00:40:49 +00:00
configs	Add support for calling to and returning from signal handlers in in user-mode threads	2013-03-17 00:40:49 +00:00