RM0440 Rev 4 2111/2126
RM0440 Debug support (DBG)
2112
47.17.10 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
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