Can't enable port B & D clocks

[vneff]

I tried the following code in a STM32F107:

RCC->AHBENR = RCC->AHBENR | RCC_APB2ENR_IOPBEN_Msk| RCC_APB2ENR_IOPDEN_Msk;

and

RCC->AHBENR = RCC->AHBENR | 0x00000008 | 0x00000020;

When I display RCC->AHBENR, it always shows 0001C014.

I expected to see 0x0001C03C.

I found this because Ethernet never finished resetting.

[Emre Kiremitci]

Hello. Could you try this RCC->APB2ENR|=(1<<5)|(1<<3);

[vneff]

Tried RCC->APB2ENR|=(1<<5)|(1<<3);

Still shows 0001C014.

[Tesla DeLorean · Accepted solution]

AHB != APB2, different busses

RCC->APB2ENR = RCC->APB2ENR | RCC_APB2ENR_IOPBEN_Msk| RCC_APB2ENR_IOPDEN_Msk;

[Tesla DeLorean]

Sure you're reading RCC->APB2ENR, and not RCC->AHBENR again? Would be odd for them both to read as 0x0001C014

[vneff]

My BAD.

I had been checking the Ethernet clocks.

Thanks for pointing out my error.

Unfortunately, I now have no idea why the Ethernet reset is not working. It times out.