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How to collect the event while the registers on DWT overflow?

Question asked by Lingjun Kong on Aug 28, 2017
Latest reply on Aug 28, 2017 by Lingjun Kong

ARMv7M has provided a tracing unit for debugging: The Data Watchpoint and Trace unit. but it has only 8bit counter for such as CPICNT. how do you use it to count a piece of code?