STLink USB communication error

[hh.bakker9]

Posted on February 04, 2011 at 02:25

I know that this forum is for the Discovery but I have a question regarding the STM3210C-Eval board, which is similar, and for which there is no forum.

I've been working with a small STM32 board, programming it with Atollic TrueStudio and the DeFUse Demonstration software. Slow work but making progress. I decided to speed things up by buying an STM3210C-Eval board and an ST-Link. The evaluation board powers up fine and runs the demo software. The ST-Link shows up as a USB drive on my computer with ST internet links on it. All good.

I connect the JTAG ribbon cable from the ST-Link to the evaluation board, plug the ST-Link into the USB and then the power to the evaluation board. Using the STM32 ST-Link Utility I try to connect to the board but I get an ''STLink USB communication error'' every time. I have made sure that the setting is for JTAG (although I checked SWD as well for a laugh). Also disconnected the ST-Link from the computer and got another error instead so the ST-Link is definitely visible and working.

I switched to another computer in case there was a problem with USB drivers but still had the same problem.

Has anyone got any ideas as to what is going wrong here? A simple newbie problem? A dud ST-Link?

#stm32f107 #jtag #debugger #error #usb

[james239955_stm1_stmicro_com]

Posted on February 04, 2011 at 04:38

Stupid questions, but, you are using CN13 for JTAG, right?  There is also a CN12 with is for trace tools.  Both connectors have the same number of pins.  Easy to get into the wrong connector.

Good luck,

Jim

[hh.bakker9]

Posted on February 06, 2011 at 21:59

There are no stupid questions, Jim. Thanks for the suggestion.

There is only one such connector in the ST-Link package, which I am going to have to assume is a CN13 for JTAG. Probably a safe assumption since it's the ST-Link's primary purpose.

Cheers

Huub