Fpb (Flash Patch Breakpoint) - STMicroelectronics RM0365 Reference Manual

RM0365
Note: It is highly recommended for the debugger host to connect (set a breakpoint in the reset
vector) under system reset.
33.12

FPB (Flash patch breakpoint)

The FPB unit:
•
implements hardware breakpoints
•
patches code and data from code space to system space. This feature gives the
possibility to correct software bugs located in the Code Memory Space.
The use of a Software Patch or a Hardware Breakpoint is exclusive.
The FPB consists of:
• 2 literal comparators for matching against literal loads from Code Space and remapping
to a corresponding area in the System Space.
•
6 instruction comparators for matching against instruction fetches from Code Space.
They can be used either to remap to a corresponding area in the System Space or to
generate a Breakpoint Instruction to the core.
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