Reply to post: Re: 10KB for the OS?

Huawei announces tiny 10 KB IoT kernel

Christian Berger

Re: 10KB for the OS?

Actually in the embedded world that's already rather large. The more interesting questions are how much RAM it needs under certain conditions, for example with one TLS connection open.

Flash is cheap in embedded devices, RAM is the expensive thing. Your microcontroller may have anything from 256 bytes to 256 kilobytes and anything beyond will need external RAM which makes is so expensive you can just as well add 16 Megabytes with no additional cost and run Linux.

Anyhow in that order of magnitude you can also get an FreeRTOS/OpenRTOS which gives you the advantage of being well designed and documented, plus even the free support via Webforum is _way_ better than anything you can pay for with companies like Mentor Graphics.

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