I think i bricked my chip but dont know what happened and how i could revive the chip. The Error when i try to connect with STM32CubeProgrammer is: "Error: ST-LINK error (DEV_TARGET_CMD_ERR)"
What have i done to get to this state:
- erase chip completly
- flash with sbsfu
- uart shows: "Applying RDP-1 Level. You might need to unplug/plug the USB cable!"
- restart device with unplug cable
- plug cable
After i can not connect again via STM32CubeProgrammer.
ST-Link Configurations are
- Port: SWD
- Frequency: 8000
- Mode: Under Reset
- Access Port: 0
- Reset mode: Hardware Reset
Output:
14:33:37 : ST-LINK SN : 002C004A3331511534333834
14:33:37 : ST-LINK FW : V3J10M3B5S1
14:33:37 : Board : STLINK-V3MODS
14:33:37 : Voltage : 3.30V
14:33:37 : Error: ST-LINK error (DEV_TARGET_CMD_ERR)
I also tested all other modes.
With the st-util tool command "st-info --probe" i got the following output:
$ st-info --probe --connect-under-reset
Found 1 stlink programmers
version: V3J10S1
serial: 002C004A3331511534333834
flash: 0 (pagesize: 0)
sram: 0
chipid: 0x0000
descr: unknown device
so the st-link can not read the device information i think. What could be the Problem and what could i try?
