ST-LINK/V2 showing wrong serial number in STM32CubeProgrammer

[yogesh30]

Hi,

    I am using ST-LINK/V2 to flash my boards. My issue is that when I tried to flash the boards using OpenOCD, I am getting the error "No device matches the serial string". So I checked ST-Link/V2 serial number using STM32CubeProgrammer, it showed me a 12 byte value. If I used that serial number I am getting the same error.

OpenOCD version: Open On-Chip Debugger 0.10.0

STM32CubeProgrammer Version: 2.14.0

ST-LINK/V2 Firmware: V2J42S7

I also found a work around for this issue by replacing the serial number byte1, byte5 and byte11 with 3F values. I tried with multiple ST-Links and this work around is working.

Serial Number from STM32CubeProgrammer

byte 0	byte 1	byte 2	byte 3	byte 4	byte 5	byte 6	byte 7	byte 8	byte 9	byte 10	byte 11
49	FF	68	6	66	84	56	57	31	36	13	87

The Red Highlighted bytes need to be changed to 3F

Fixed Serial Number

byte 0	byte 1	byte 2	byte 3	byte 4	byte 5	byte 6	byte 7	byte 8	byte 9	byte 10	byte 11
49	3F	68	6	66	3F	56	57	31	36	13	3F

[Amel NASRI]

Hi @yogesh30,

Did you try a firmware upgrade for the st-link? 

-Amel

[yogesh30]

Hi,

    Yes, I updated the firmware from V2J42S7 to V2J44S7, but that issue is still there. The work around I mentioned early is also working for the latest firmware.