I just set a few break point to debug my code in keil with STM32F429 disco kit. But I came across the below image.
So, is there any limitation about the number of breakpoints ?
Yes, there's a certain fixed number of address comparators. In the Cortex-M3/M4 debug setup, they are placed in the somewhat confusingly named Flash Patch Breakpoint unit, see RM0090 ch.38.12:
The FPB consists of:• 2 literal comparators for matching against literal loads from Code Space and remappingto 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 togenerate a Breakpoint Instruction to the core.
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