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by dpotop
Thu Nov 27, 2014 4:25 pm
Forum: Bare metal, Assembly language
Topic: IRQ received while in SWI handler
Replies: 2
Views: 782

Re: IRQ received while in SWI handler

How about just try it? Set up an experiment and see what happens. Pretty easy to setup an swi that just spins in a loop, then have the interrupt handler change something global that the swi handler can see. Ok, that's good advice, thanks (even though I would have preferred having an explanation of ...
by dpotop
Thu Nov 27, 2014 1:53 pm
Forum: Bare metal, Assembly language
Topic: IRQ received while in SWI handler
Replies: 2
Views: 782

IRQ received while in SWI handler

Hello, I'm writing a simple multi-tasking scheduler (a small OS, if you want). Currently, execution is purely time-triggered, so I only handle the IRQ interrupt. The handler only enables interrupts just before entering user mode and giving control to the interrupted task. However, I want to have sys...
by dpotop
Thu Nov 27, 2014 1:33 pm
Forum: Bare metal, Assembly language
Topic: Introducing USPi - A bare metal USB driver written in C
Replies: 73
Views: 21668

Re: Introducing USPi - A bare metal USB driver written in C

Hello,

First of all: nice work !

Second: I have a question: While reading uspios.h I saw that you require
a 100Hz timer. Is this enough to handle Ethernet ?

Yours,
Dumitru

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