STM CircleOS forum / OPI Driver Error (2750)

firsttux · 2011-11-30 09:41:27

Hello

I'm using Rlink Standard (codesize limited to 64k) with a own STM32F103VCT6 Board.

The size of code is less 64k.

With debug/start the programming ends successfully and the green run button appears, the blue arrow appears beside main, but after Run the following error appears:

OPI Driver Error (2750)
Lost communication with target. Terminating debug session.

I work with SWD protocol (3V3, GND, RST, SWDIO and SWCLK are connected).

Does anybody know the problem?

Thanks in advance!

VincentC · 2011-12-09 07:56:11

Hi,

This looks like your application is disabling debug. For example by reconfiguring the SWD IO pins. Please check that. Please also try debugging one of the examples provided with Ride. They do not disable debug.

Another possible explanation would be that the TRST signal is tied low somehow. Please make sure that it is either unconnected or connected to the RLink's TRST. It MUST NOT be connected to RST.

Of course you must make sure that no component (reset manager, etc.) interferes on the SWD signals RST, SWDCLK and SWDIO.

Best Regards,

Vincent

# 1 2011-11-30 09:41:27 OPI Driver Error (2750)

OPI Driver Error (2750)

# 2 2011-12-09 07:56:11 OPI Driver Error (2750)

Re: OPI Driver Error (2750)

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