Hello,
I am trying to halt a processor for LPC55S69 by directly writing to DHCSR, but failed. Here are my steps for halting.
*((volatile unsigned *)(0xE000EDF0))=0xa05f0001; // the 0xE000EDF0 is the address of DHCSR in cortex-m33, I configure C_DEBUGEN as 1 to enable halting debug
//check whether the DHCSR is modified, the answer is yes.
*((volatile unsigned *)(0xE000EDF0))=0xa05f0003; // I set the C_HALT as 1 to halt the processor
//some other operations
But when I execute these codes I find the other operations are executed, and when I read the DHCSR again I find the C_DEBUGEN is modified as 0. It is clear that if this bit is set as 0 (I don't know who changes this bit), then C_HALT is invalid. Maybe this is the reason why I cannot halt the processor.
Can someone help me to halt the processor? If I succeed, the other operations should not be executed.
