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STLinkv2.1 comm error for SWD on STM32469I-Eval

Question asked by Prashant Chopade on Jun 7, 2018

Hi,

I have STM32469I-Eval board.

I used STM32SW4 (AC6) toolchain and built a LED toggle project and debugged it using OpenOCD.

Everything was working good.

Then i did HW modifications on it by removing CN2, CN4, R216, R217, R227, R228, R6, R15, R80, R87, R93, R103, R107, R113, R203, R290. On JP14 used PSU, as I am using external power adaptor 5V/2A, came with the kit.

Now I am not able to connect/program the EVal board using ST-Link utility 4.2.0.0 (with FW version: V2J30M19) and getting this error in trace log:

ST-Link/V2 device detected

Target voltage detected: 3.216787

Error getting target IDCODE: if SWD, check SWD connection

Error (4) while initializing ST-Link in SWD mode

ST-Link/V2 device detected

Target voltage detected: 3.216787

Error getting target IDCODE: if SWD, check SWD connection

Error (4) while initializing ST-Link in SWD mode

ST-Link/V2 device detected

Target voltage detected: 3.216787

Error getting target IDCODE: if SWD, check SWD connection

Error (4) while initializing ST-Link in SWD mode

ST-Link/V2 device detected

Target voltage detected: 3.216787

Error getting target IDCODE: if SWD, check SWD connection

Error (4) while initializing ST-Link in SWD mode

USB communication error (65567) after target cmd F2 45 00 00 FC 00 00 00 00 00

USB communication error (65567) after target cmd F1 80 00 00 00 00 00 00 00 00

ST-Link get version failure

 

What would be the reason for this failure?

 

Regards,

Prashant

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