JimEli Profile Topics Started Replies Created Engagements Favorites Search replies: Forum Replies Created Log In Register Lost Password Viewing 1 post (of 1 total) Author Posts March 18, 2019 at 19:16 in reply to: How to debug STM32 startup code #24328 JimEliParticipant Sorry, but neither of those techniques are working for me. The program is halting on first line of main. I’m using USB STLink v2.1 and BP set inside system_stm32f4xx.c/SystemCoreClockUpdate function immediately turns white when I select F5. Author Posts Log In Register Lost Password Viewing 1 post (of 1 total)