[riot-notifications] [RIOT-OS/RIOT] doc/rdm: RFC - design goals (#10162)

Thomas C. Schmidt notifications at github.com
Thu Jan 31 16:34:33 CET 2019


tcschmidt commented on this pull request.



> +Above the HAL, the only thing that modules should know about hardware is
+whether a required feature is there or not. If it isn't, the module should
+adapt accordingly, or not compile.
+
+## Real-time capabilities
+
+Different real-time guarantees are required for different use cases. Low
+frequency sensing needs only soft real-time support and can handle less timing
+accuracy so long as the timers support long timescales. High-frequency sensing
+and control applications need hard real-time guarantees and sub-millisecond
+timing accuracy.
+
+RIOT should deliver soft real-time performance by default, to cover the widest
+range of use cases. Programs with hard deadlines should be achievable with more
+expertise. It should provide timers which can competently handle the timescales
+of any application.

@danpetry as suggested: Look at the corresponding section of the paper. This was produced after lengthier discussions and reassurance on the subject.

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