Does STM32U385 Support Micro Trace Buffer(MTB)?

[vijayrakesh]

Hi,

I’m using an STM32U385 (Cortex-M33) and trying to enable the Micro Trace Buffer (MTB) using ARM’s MTB-M33 register addresses (0xE0043000 base).

No matter what I try, the EN bit in MTB_MASTER never sets.

Does the STM32U385 have the MTB component?

Thanks,

Rakesh

[KDJEM.1 · Accepted solution]

Hello @vijayrakesh ;

According the reference manual RM0487 Rev 1, the debug features are based on Arm CoreSight components.
• SWJ-DP: JTAG/Serial-wire debug port
• AHB-AP: AHB access port
• ROM table
• System control space (SCS)
• Breakpoint unit (BPU)
• Data watchpoint and trace unit (DWT)
• Instrumentation trace macrocell (ITM)
• Embedded Trace Macrocell™ (ETM)
• Cross trigger interface (CTI)
• Trace port interface unit (TPU)

The STM32U385 doesn't support Micro Trace Buffer(MTB).

Thanks and best regards,

Kaouthar