[OpenOCD-user] STLink V3 ignoring commanded adapter speed?

[Mark W <mw...@mw...>]

Hi all,

I'm attempting to program a STM32H7A3 using a STLink V3Mods (latest firmware).

It's failing due to the SWD speed being far too high (checked with a DSO).
The initial SWD "magic switch" clock rate is 5Mhz, and the following
SWD coms (stlink_open()?) is at 9Mhz.

When I use a STLink V2 Isol with the exact same openocd scripts, all
SWD clock rates are at 1-2Mhz, and everything works fine.

I've tried a variety of "adapter speed" commands in the script, but it
seems the STLink V3 just ignores it (or it's not being requested by
openocd).

Has anyone come across this before? How do I get it fixed?

Thanks in advance.