I did a program using ST-Link debugger on a custom board. The program is working fine. However, when I program the chip using ST-Link utility, the program is not starting without the ST-Link connected. When the ST-Link is connected, the system starts.
Anyone had such an issue?
Ok it is a bit stupid but I have to admit that in the stress I got a bit blind.
When I said:
The program is working fine however when I program the chip using ST-Link utility, the program is not starting without the ST-Link connected.
I was actually testing with only the usb removed from the ST-LINK and not removing totally the JTAG. So now I know that the ST-LINK is pulling down the reset when not powered.
Thanks Tom and staringlizard, you noted interesting thinks. Actually the Boot0 was my previous issue...