[md]STM32G071怎样通过DWT实现us精准定时？,各位大佬有实现的吗？

M0,M0+内核确定支持DWT吗？

先看看M0的手册

yklstudent 发表于 2023-3-18 22:12
M0,M0+内核确定支持DWT吗？

M0+手册

37.8 DWT (Data Watchpoint) The Cortex**®**-M0+ DWT implementation provides two watchpoint register sets.

37.8.1 DWT functionality The processor watchpoints implement both data address and PC based watchpoint functionality, a PC sampling register, and support comparator address masking, as described in the **ARMv6-M Arm**.

37.8.2 DWT Program Counter Sample Register A processor that implements the data watchpoint unit also implements the ARMv6-M optional **DWT Program Counter Sample Register **(DWT_PCSR). This register permits a debugger to periodically sample the PC without halting the processor. This provides coarse grained profiling. See the **ARMv6-M Arm **for more information. The Cortex**®**-M0+ DWT_PCSR records both instructions that pass their condition codes and those that fail