Posted on February 04, 2015 at 12:58I am using ULINK-PRO to debug a STM32F4. I have connected the target as per the Cortex Debug+ETM 20 pin. I have connected TRACE_D1 to nTRST as I believe these pins are multiplexed within the ULINK PRO. i.e. nTRST which is pin 3 of the Standard JTAG connector is linked to pin 16 of the Cortex Debug+ETM connector.
Is this correct?
The STM32F4 errata says nTRST must be connected to initialize debug but this makes it incompatible with the Cortex Debug+ETM connector.
The debug seems to be OK but we have not yet needed the trace facility (apart from the sw printf). I have used the same connections for about 5 different target boards.
nTRST is an input TRACEDATA[1] is an output so how will this work?
