ST STM32L4+ Series Reference Manual page 2277

RM0432
57.17.10 Example of configuration
•
Set the bit TRCENA in the debug exception and monitor control register (DEMCR)
•
Write the TPIU current port size register to the desired value (default is 0x1 for a 1-bit
port size)
•
Write TPIU formatter and flush control register to 0x102 (default value)
•
Write the TPIU select pin protocol to select the synchronous or asynchronous mode.
Example: 0x2 for asynchronous NRZ mode (UART like)
•
Write the DBGMCU control register to 0x20 (bit IO_TRACEN) to assign TRACE I/Os
for asynchronous mode. A TPIU synchronous packet is emitted at this time
(FF_FF_FF_7F)
• Configure the ITM and write the ITM stimulus register to output a value
RM0432 Rev 6
Debug support (DBG)
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