(Quick reply)
- RIOT is obviously targetted at microcontroller-based systems (not Linux level).
- AT commands... you can't use modems in general as a good example of anything. Thes software running on those things tend to be terrible.
- Good storage management != filesystem. you can simply allocate a rotating circular buffer in FLASH with CRCd blocks. This is a simple mechanism that gives you both bad-block-management and wear-levelling in one trivial mechanism. No filenames in sight! ;o)
- Hiring... There is a lot more to embedded systems than "Can they use the API". All RTOSs use similar APIs, thats never been an issue.
Agree with TickleSteve; there are file system essential options which may work out of the box for you, or at least provide a nice framework for what you need.
This is a very broad brush. My Embedded Linux system makes amazingly good use of Linux and its Posix APIs. It’s also way to big to be the target of RIOT, so let’s talk about it’s 3 other embedded MCUs.
> Filesystems are not generally applicatble...You’re never going to need textual filenames
Really? Because I always enjoy talking to my cell radio doing AT+CMOGS=257,FFFFFF^1. That’s open file 257 and write FF.
Maintenance, debugging and robuestness of embedded systems is frequently overlooked. It allows not only a single dev, but a team to work, debug and release a system is a big deal. Embedded systems, esepcially those logging data, holding SSL certs, config data can very much use a filesystem. None of this has to be complex JFFS2 FS.
For example, if it’s an IoT, how do you plan to OTA it without good storage management?
> I would not take POSIX compliance for a system like this as a plus point
As a hirring manager anything that opens my pool of candidates is useful. Teaching someone a whole new environment is a big deal. If there’s similar concept and tools this ia big plus.^2
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1) ok, I can’t remember the right AT command or the right file number, but serisouly how did this make it into a public API in 2019?
2) Mostly true. If it’s too close that it’s almost the same, but not due a laundry list of weird exceptions I’ll skip it. Micropython is my example here, it’s like really close to python, may too close but too different. There’s lots of other embeddedable languages that aren’t too close but weird.