Using the STM32H745I-DISCO and I want to Monitor Bank 1 CRC using the M4 processor. Is there a good reference or example I can use as a starting point?

[Tesla DeLorean · Accepted solution]

I just has to read the memory, materially similar code will run on either core, the FLASH is dual-ported. You can do the CRC in software or use the hardware one. Although that might not share well, the HW is typically not multi-threaded and there's a single instance.

STM32Cube_FW_H7_V1.10.0\Projects\STM32H745I-DISCO\Examples\CRC\CRC_UserDefinedPolynomial\CM7\Src\main.c

STM32Cube_FW_H7_V1.10.0\Projects\NUCLEO-H743ZI\Examples\CRC\CRC_Example\Src\main.c

[Icecube]

How do I run the hardware CRC?

[Icecube]

Using the CRC_UserDefinedPolynomial example HAL_CRC_Calculate(&CrcHandle, (uint32_t *)&codePointer, 32700);

[Icecube]

volatile unsigned int *codePointer = (volatile unsigned int *)0x08000000;

[Icecube]

I get a hard fault if I supply a length over 0x7fff. uint32_t HAL_CRC_Calculate(CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength);

[Tesla DeLorean]

Doesn't it expect a WORD count? It will hard fault beyond the decoded memory space.

Check the actual address it's faulting on.

[Icecube]

That's what it was. I went beyond the address space. All good now.