Super Simple Tasker on ARM Cortex

Question

I read article Build a Super Simple Tasker and I like the idea. It's very simple scheduler, but he has real-time and preemptive multitasking with a single stackit. I like the idea, but when I tried to write this program for a modern microcontroller (ARM Cortex-M), I failed. In book "The Definitive Guide to the ARM Cortex-M3" in chapter "9.2 Exception Exits" is written, that this microcontroller has not different EOI and RETI instructions (or its analogue). In this microcontroller: return interrupt handler == EOI == RETI ?

Someone (expert assembler) can tell me how I can replace the commands RETI and EOI from the article for ARM Cortex-M microcontroller?

Read the friendly manual here. I found it with www.google.com. — Lundin
So, uh, literally your first project on an ARM processor is a multi-tasking scheduler? — unwind
the cortex-m3 is a cortex-m microcontroller, what microcontroller are you trying to use? — old_timer

Vyacheslav Verkhovin Vyacheslav Verkhovin · Accepted Answer · 2018-04-27T16:54:10

Author (Miro Samek) wrote to me how to do this for the Cortex-M. Theory: https://www.state-machine.com/qpc/arm-cm_qk.html Code: https://github.com/QuantumLeaps/qpc/blob/master/ports/arm-cm/qk/gnu/qk_port.c

Super Simple Tasker on ARM Cortex

1 Answers