where in the STM32 documentation would i find out if a stm32 L4 76ZE has a trace buffer?
Get the ARM documentation for the core and check the registers / flags in the ITM and DWT units.
Don't think it uses a trace buffer. That resides in the trace pod. On the CM0 you can allocate SRAM to the instrumentation code, don't think you do that with CM4.
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