[coldfire-gnu-discuss] real time problem with MCF5485

[Maxim Kuvyrkov]

Jean Christophe BARRIOL wrote:
> Hi,
> 
> We notice a strange problem with Coldfire MCF5485 (and also with MCF5234):
> 
> The treatment time (the time for the CPU to run the code) of an ISR, 
> which has the highest priority level, varies according to the code that 
> run on others ISR or Main task. !!!!
> 
> We verified that the Real time ISR (the one with the highest priority) 
> is never preempt !
> 
> We also use MCF5407. There’s no problem with it.
> 
> Any idea ?

This doesn't look like a toolchain issue.  Have you contacted Freescale 
about it?

--
Maxim