|ARM Technical Support Knowledge Articles|
Applies to: Cortex-M7
The ARM Embedded Trace Macrocell Architecture Specification ETMv4.0 to ETMv4.1 describes an optional capability for teh ETM to stall the processor as a means of preventing the trace buffer from overflowing.
Cortex-M7 does not support this capability. The ETM-M7's TCIDR3.SYSSTALL (bit) reflects the SYSSTALL input signal of the ETM, which is driven LOW by the processor, so ETM stalling is not supported.
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