Question
Cannot flash any program after try to use USART. Did I anything wrong?
I had installed tera term for using USART with 'USB to USART' (I'm pretty sure all of pin connect correctly). after that I flash the program to STM32L1 board. It works but after going to debugger mode, but the debugger aborted and exit debugger mode. After that I try to erase and flash another project doesn't use USART and 'USB to USART' but It shows 'No Target connected' and 'Target DDL has been canceled' I has checked on 'options for target .. ' already. and I check on device manager that is still connected. I try to erase on ST-Link utility but it doesn't works. and LD1 and LD2 on my STM32L152RB board still turn on. Did I anything wrong? the board might be broken? and what should I do?
