Debugger hangs at SCB_EnableDCache();

[gvenkatr13]

When I'm enabling DMA and run the code, the debugger hangs at "SCB_EnableDCache();" even though the function is correctly excuting when I go step by step. Also as seen in the examples the problem gets solved when using a static declaration  "static void CPU_CACHE_Enable(void);"
Is it the issue with the debugger or the code.

[Imen.D · Accepted solution]

Hello @gvenkatr13 

As recommendation, I invite you to review this FAQ: 

DMA is not working on STM32H7 devices - STMicroelectronics Community

[SofLit]

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@gvenkatr13 wrote:

When I'm enabling DMA and run the code, the debugger hangs at "SCB_EnableDCache();" 

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Where did you enable the cache? is that possible to share your code?

[Pavel A.]

@gvenkatr13 Do not try to single-step thru SCB_EnableDCache and its friends. This is a known behavior. Whether it is a bug [with complex inline functions] or not IMHO does not matter, just don't do this. Converting the inline to a normal function may help, but ST won't change it because these header files come from upstream (ARM CMSIS).

[gvenkatr13]

It was automatically generate by cubeMX in main() when I enable DMA.

/* Enable the CPU Cache */

/* Enable I-Cache---------------------------------------------------------*/

SCB_EnableICache();

/* Enable D-Cache---------------------------------------------------------*/

SCB_EnableDCache();