>>>>> "Andreas" == Andreas Fritiofson <andreas.fritiof...@gmail.com> writes:
Andreas> On Wed, Feb 4, 2015 at 6:02 PM, Tomas Vanek
Andreas> <tom_...@users.sourceforge.net> wrote:
Andreas> time to time I encounter an error reading a configuration
Andreas> register using ST-Link V2.
Andreas>
>> mdh 0x40048010 2
Andreas> 0x40048010: 0000 0000
Andreas> It probably doesn't affect your issue but be aware that the
Andreas> ST-Link doesn't support 16-bit accesses. I think OpenOCD maps
Andreas> it to two 8-bit accesses, which of course may fail when dealing
On STM32 all 16 bit registers are on a 32-bit boundary, so 16-bit should
better ba accessed as 32-bit.
Andreas> with peripheral registers. IMO we should fail them instead.
Andreas> Also, if things haven't improved since I used it last time,
Andreas> read failures do not propagate to OpenOCD so if you read bogus
Andreas> addresses (or use unsupported access sizes) you get bogus data,
Andreas> instead of failure. ST-Link really isn't the best tool to use
Andreas> for low level debug and I don't get why people insist on using
Andreas> it for that.
The ST-Link is abundant and is part of the Nucleo and Discovery boards. So
not using the STlink would be strange.
--
Uwe Bonnes b...@elektron.ikp.physik.tu-darmstadt.de
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