Ada and Spark on ARM Cortex-M – A Tutorial with Arduino and Nucleo Examples

Re:Ada and Spark on ARM Cortex-M – A Tutorial with Arduino a... by kvemkon on Wednesday April 01, 2026 @03:11PM (#47605167)

> Cortex-M is determinism in hard real-time systems

> or your real-time deadlines are so tight an FPGA would be a better choice

That's why I'd say Cortex-M fits well for a very-very good soft real-time (99.99+%). But for hard real-time (100%) you need an FPGA.

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Re:Ada and Spark on ARM Cortex-M – A Tutorial with Arduino a... by bsder on Wednesday April 01, 2026 @07:34PM (#47608052)

The TI PRUs demonstrate that what you need for hard real time is 2 processors and the ability to completely transfer your register file in a single clock cycle instruction.

This lets your first processor be deterministic hard real time while your second processor is soft real time.

I really wish somebody who makes M-series microcontrollers would get the message already.

[ Parent | on HN ]