Break at address "0x1fff2f1e" with no debug information available

[Akshat-hu-vro]

I am trying to program a stm32l451cet6 microcontroller. My code works perfectly fine for 5-6 debug sessions. After a few debug sessions, this warning pops up with a different address for every hardware I use.

When this break at address pops up, my code stops working. I tried debugging and found there was no break point at any line of the code. Why is this break even popping up?

[TDK]

You're in the system memory. Few possibilities:

• Is BOOT0 tied low?
• Is the vector table set correctly (look at SCB->VTOR)

[Akshat-hu-vro]

The BOOT0 pin is connected to GND. Is this a problem? Should I connect it to VCC or leave it hanging?

[TDK]

BOOT0 should be grounded or pulled to ground.

[Tesla DeLorean · Accepted solution]

It can start in ROM if the FLASH is erased at some point in the reset, startup and erase cycle.

BOOT0 = LOW should be adequate to start viable FLASH code at power up.

Make sure SCB->VTOR points at the FLASH vector table, should be handled in SystemInit()