MCU being misidentified on an STM32F407-DISCO1

[dscdsc]

The MCU on my STM32F407-DISCO1 board is being misidentified as STM32F215 / 217.

 

I'm pretty sure it is in fact STM32F407VG. What could be causing it?

[Tesla DeLorean]

I think it's an early part circa 2011, seen as a STM32F457, and perhaps needs special casing

https://community.arm.com/developer/tools-software/tools/f/keil-forum/35983/scary-stm32f4-compiler-issue

On a DISCO (Rev B) not DISC1 board

[dscdsc]

Not sure about it being STM32F457, but it does seem like the chip is Rev A and the board is Rev B-00.

[dscdsc]

Yep, confirmed in the errata sheet.

[Tesla DeLorean]

void CORECheck(void) // sourcer32@gmail.com
{
  uint32_t cpuid = SCB->CPUID;
  uint32_t var, pat;
 
  printf("CPUID %08X DEVID %03X REVID %04X\n", cpuid, DBGMCU->IDCODE & 0xFFF, (DBGMCU->IDCODE >> 16) & 0xFFFF);
 
  pat = (cpuid & 0x0000000F);
  var = (cpuid & 0x00F00000) >> 20;
 
  if ((cpuid & 0xFF000000) == 0x41000000) // ARM
  {
    switch((cpuid & 0x0000FFF0) >> 4)
    {
      case 0xC20 : printf("Cortex M0 r%dp%d\n", var, pat); break;
      case 0xC60 : printf("Cortex M0+ r%dp%d\n", var, pat); break;
      case 0xC21 : printf("Cortex M1 r%dp%d\n", var, pat); break;
      case 0xC23 : printf("Cortex M3 r%dp%d\n", var, pat); break;
      case 0xC24 : printf("Cortex M4 r%dp%d\n", var, pat); break;
      case 0xC27 : printf("Cortex M7 r%dp%d\n", var, pat); break;
 
      default : printf("Unknown CORE\n");
    }
  }
  else
    printf("Unknown CORE IMPLEMENTER\n");
}