ColdFire/68K Microcontrollers and Processors中的主题 Re: RTE error (reset) MCF51QE128

RTE error (reset) MCF51QE128

thm59 — Mon, 17 Sep 2007 00:00:54 GMT

Hello,

I'm trying (for 1 week) to port FreeRTOS on the MCF51QE128 (I have port this on mc9S08QE128 without problem), on the basis of the excellent work of Emmanuel (BugMan) for MCF5213.
When the OS try to start the (Task) scheduler, after a "restore context", a RTE instruction re-load the PC and the SR.

But, the MCF51 resets when trying to execute this RTE.

I attach a picture of the debug session, just before the execution of the RTE instruction.
The stack frame at 8004DC looks OK (?), The instruction at the BC4 adress (B4C) is a JSR

Does anyone have a remark or a suggestion (I am relatively beginner)?

Anyone know other (free) RTOS fort the MCF51QE?

thanks,

thierry

Re: RTE error (reset) MCF51QE128

thm59 — Thu, 11 Oct 2007 05:00:13 GMT

Hello,

I attach the work I have already done, hoping that someone could help me

thierry

Re: RTE error (reset) MCF51QE128

thm59 — Thu, 11 Oct 2007 05:06:43 GMT

the same running with MC9S08QE128

thierry

Re: RTE error (reset) MCF51QE128

thm59 — Sun, 16 Mar 2008 21:29:48 GMT

OK, now it works (FreeRTOS V4.7)

Attached is a simple demo : Toggling 2 leds at different speed on a DEMOQE128.
The code is given without any warranty and can be most probabely improved.

th.

Re: RTE error (reset) MCF51QE128

erooll — Tue, 08 Jul 2008 03:10:08 GMT

Hi.

I download last version in your post, but doesn't work in Coldfire V1.
Could you send me your version that works OK in an Coldfire?
Thanks.

Re: RTE error (reset) MCF51QE128

RajahMC — Sat, 08 Nov 2008 14:31:05 GMT

Hi thm59,

Thanks a lot for your port. Works like a charm.
on the QE128. I am using your source as a start
and trying to port it to JM128.

I keep getting an ILLEGAL_BP after starting
the program from the debugger. The only file
that I had to change was main.c

I have my project attached. Can you please
see if I am missing something?

Thanks,
Rajah