One by one port pin configuration locking

[brat0x2]

There is no clear information in the reference manual about port pin configuration locking one by one. For example (desired code):

void SomeFunction()
{
  // locking pin configuration one by one
  LL_GPIO_LockPin(GPIOA, LL_GPIO_PIN_0);
  LL_GPIO_LockPin(GPIOA, LL_GPIO_PIN_1);
  LL_GPIO_LockPin(GPIOA, LL_GPIO_PIN_2);
  ...
}

May I lock pin's configuration one by one, not all at once (see code below)?

void OtherFunction()
{
  // locking all pins configuration at once
  LL_GPIO_LockPin(GPIOA, LL_GPIO_PIN_2 | LL_GPIO_PIN_1 | LL_GPIO_PIN_0);
  ...
}

[STTwo-32 · Accepted solution]

Hello @brat0x2 

Yes, you can lock only 1 pin for each call of the LL_GPIO_LockPin.

Best Regards.

STTwo-32 

[Tesla DeLorean]

FYI Full source code to the libraries is provided, so you can review it, and expand upon it.

[SofLit]

Hello @brat0x2 ,

You can do it with both ways, by Oring all pins or one by one, but better to lock them at once for performance reasons.

This is the register:

You can write all the bits at once (by oring).

See also this link.  LL_GPIO_PIN_ALL value is the oring of all pins.

[brat0x2]

Thanks a lot, colleagues! In my application it is very convinient one by one way of configuring port pin locking.