no target found/DEV_UNKNOWN_MCU_TARGET
Hi all
I just designed my first custom PCB running on an STM32U585(VIT6). Or let's say it was desired to run on a STM32...
As I couldn't get the MCU noticed by neither the STM32CubeMX nor the STM32CubeProgrammer, I designed another board that just holds the MCU itself, a LED (incl. Resistor), and pinouts for VDD, GND, PA13, PA14 and NRST.
I designed that very bare minimum PCB thinking that it may eliminate all disturbing elements. But even with that PCB I'm facing the same errors. The MCU was ordered at Digikey. So I guess there's no bootloader or something on it?!
I'm using a ST-Link V2 (seems to be a clone from Aliexpress tbh), connected to the PCB as follows
| MCU | ST-Link V2 clone |
| VDD | 3V3 |
| GND | GND |
| NRST | RST |
| PA13 | SWDIO |
| PA14 | SWDCLK |
Now running STM32CubeProgrammer with this setup, I'm getting "Error: ST-LINK error (DEV_UNKNOWN_MCU_TARGET)" when using JTAG port and "Error: No STM32 target found..." when using SWD port settings. In both cases I tried using different settings for Frequency, Reset Modes, Speeds, etc.
I also tried connecting to the MCU-PCB by briding through a ST-Link from the U575 Nucleo Board. Same result.
I'm very lost and can't really figure out what's the problem. Can anyone please try to help me with that? In all the Technical and Application Notes I don't find the respective part that provides knowledge about fresh-out-the-factory chips. Like "how to: first blinky" on a completely fresh MCU.
Any help is highly appreciated! Please help me getting my board running and restore my motivation! :)
cheers