Re: [ECOS] ecos-3.0 current stm32 bug?

[Philipp Meier <pme.neratec@gmx.ch>]

On 08/25/2011 02:31 PM, Nick Garnett wrote:
> On 25/08/11 13:13, Philipp Meier wrote:
>
>> With the bootloader built under Windows/Cygwin, basepri (mon reg
>> basepri) is 0x00 when my application's hal_reset_vsr function is reached.
>> When I build the bootloader  (using the same ecos-library version/code
>> and the same bootloader source code) under Linux, then basepri is 0x10
>> when my application's hal_reset_vsr function is reached.
>>
>> Why this difference between Cygwin and Linux?
> In theory BASEPRI should have been set to 0x10 by both bootloaders by
> the time the application starts running. That the Windows-built
> bootloader has not done that is unexpected. It looks like the actual bug
> is in the Windows build. The Linux build is doing what I would expect.
> So it looks like you have been fortunate not to trip over this issue
> earlier.
>
> The comparison of the executables that I mentioned earlier should help.
> It looks like only the bootloaders may need comparing.
>
>
Thank's a lot. This is exactly the case!

There has been a bug in HAL_DISABLE_INTERRUPTS (hal_intr.h) - corrected 
with "changeset:   3009:9ba76199bff2" (Mercurial): Bugzilla 1001154

This bug "helped" as so that our bootloader was working until now.

I validated this by "re-implementing" the disable interrupt bug on my 
Linux box (just have to change the hal_intr.h file in the ecos library) 
- and with this faulty version my application starts up as with the 
cygwin built bootloader.

On my Windows/Cygwin box I manually corrected this bug in the ecos 
source code (at that moment I could not change to ecos-current) - but 
for my bootloader I did not re-build the ecos library. And therefore my 
Windows/Cygwin built bootloader still has the HAL_DISABLE_INTERRUPTS bug 
which makes our code to run.

Thank you all for your good ideas - I now know where I have to change my 
implementation.

Regards
Philipp

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