Hi,

I use a STM32F469IG and ported the Eval Firmware to the new PCB with 2 CPUs. Firmware runs only a RealTimeOS (Sciopta) and some Modules. I deactivated IOs (unfortunattely not all). The main thing I forgot was the RCC Config.
So CPU should run on 560MHz.
HSE = 25MHz
PLL_M = 8
PLL_N = 360
PLL_P = 2
-> 560MHz

The Discovery Board runs with 8MHZ HSE which ends in 180MHz SystemClock.

Now I cannot connect to it anymore. The JTAG Scan shows the ARM CoreSight JTAG Debug Port and the Boundary Scan Port. But my JLink is unable to reset the CPU.

I attached some outputs.

Are there any possiblilities to get into CPU again and do an erase?

Kind regards
Andreas

Hello Niklas,

thanks for your help.
Problem
solved. I set the BOOT0 Pint to 3.3V and the controller booted into
Bootloader Mode. Then I was able to attach to it with the debugger and
erase the flash.
I adjusted the RCC Values for my custom board. Now Firmware is running.

Kind regards
Andreas