STM32F103C8T6 APID

[mohammed-alaa]

Hello,

So, I have STM32F103C8T6 blue pill board connected with STLink v2 and I was trying to the debugger to working on a customized version of Eclipse but I ran into lots of issues with that version. So, I decided to have a clean installation of everything. After knowing that openocd is one of the tools that could help in debugging, I used it and testing everything manually, just to make sure that everything is working without the editor.

So, when I started by running this command to open a connection with the board:

D:\arm-gcc-tools\xpack-openocd-0.12.0-1\bin\openocd.exe -f D:\arm-gcc-tools\xpack-openocd-0.12.0-1\openocd\scripts\interface\stlink.cfg -f D:\arm-gcc-tools\xpack-openocd-0.12.0-1\openocd\scripts\board\stm32f103c8_blue_pill.cfg

And this was the response:

xPack Open On-Chip Debugger 0.12.0-01004-g9ea7f3d64-dirty (2023-01-30-15:04)
Licensed under GNU GPL v2
For bug reports, read
        http://openocd.org/doc/doxygen/bugs.html
Info : auto-selecting first available session transport "hla_swd". To override use 'transport select <transport>'.
test
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Info : clock speed 1000 kHz
Info : STLINK V2J40S7 (API v2) VID:PID 0483:3748
Info : Target voltage: 3.249670
Warn : UNEXPECTED idcode: 0x2ba01477
Error: expected 1 of 1: 0x1ba01477

Then, after changing the APID number from 0x1ba01477 to 0x2ba01477, it worked.

So I checked the datasheet section: 31.8.5 table: 226.SW-DP registers, I found 0x1ba01477.
I couldn't find any ID with 0x2ba01477 in the whole datasheet.
I'm not sure whether this is a bug or my board's version is different than usual.

Thanks.

[ilg-ul]

STM32F103C8T6 blue pill board

I don't know what is the correct IDCODE, but if the manual gives 0x1ba01477, I would expect it to be correct.

I'm not sure whether this is a bug or my board's version is different than usual.

Are you sure your board is original and using an original MCU?

[mohammed-alaa]

This is from the datasheet, showing the IDCODE:

Are you sure your board is original and using an original MCU?

How do I tell if it is the original? I bought it normally from a national market.

EDIT

The middle black IC has "CKS32f103c8t6" printed on it so it definitely isn't original.

[ilg-ul]

The middle black IC has "CKS32f103c8t6" printed on it so it definitely isn't original.

I thought so :-(

Unless you are fluent in mandarin and have a lot of spare time, I would stay away from such clones.

[ilg-ul]

BTW, you don't have to pass absolute paths to openocd, normally it should work with relative paths.