2019-09-24 04:22 AM
On my workstation I am facing more and more often crashes of ST-Link debug connection.
I am using Keil MDK V5.28 (also tried 5.26, V5.34a...) while running debug e.g. with Nucleo STM32G071 (same problem with Nucleo STM32F091...) debugger stops with message "Cannot access target...".
So made a new project from scratch.
With USB Analyzer was able to catch communication at such a crash.
Maybe a ST-Link professional can tell what is going wrong ?
2019-09-24 09:09 AM
Hi,
check the VDD power supply : you may have a loose connection on the JP6 (IDD) jumper that cause VDD supply being randomly lost.
Rgds
BT