ARM Coresight Trace Deformatter
Formatter is a method of wrapping multiple trace streams (specified by 7 bit ID) into a single output stream. Formatter is using 16 byte frames which wraps up to 15 bytes of data. It is used, for example, by ETR (Embedded Trace Router) which is a circular RAM buffer where data from various trace streams can be saved. Typically tracing data is decoded offline by the host but deformatter can be used on-chip to decode the data during application runtime.
Usage
Deformatter is initialized with a user callback. Data is decoded using
cs_trace_defmt_process() in 16 bytes chunks. Callback is called whenever stream changes or
end of chunk is reached. Callback contains stream ID and the data.