KB4213935 - Can Cortex-M3/4 have a pending Halt after Reset?
Applies to: Cortex-M3, Cortex-M4, , , ,
Can Cortex-M3/4 have a pending Halt after Reset?
C_HALT in the Debug Halting Control and Status Register (DHCSR) is cleared by Reset, so a Halt could not be pended across a Reset in this way. To halt from reset, use the VC_CORERESET vector catch in the DEMCR.