Black Pill miss alignment between PB12 ~ PB15 and PB_12 ~ PB_15

[heretop]

There is miss alignment between PB12 ~ PB15 and PB_12 ~ PB_15 for black pill.
Value for PB12 ~ PB15 is 27 ~30
Value for PB_12 ~ PB_15 is 28 ~ 31
It can be test by

Code: Select all

void setup(void) {
  Serial1.begin(9600);
}

void loop() {
  Serial1.print(PB12);
  Serial.print("\t");
  Serial1.print(PB13);
  Serial.print("\t");
  Serial1.print(PB14);
  Serial.print("\t");
  Serial1.println(PB15);
  Serial1.print(PB_12);
  Serial.print("\t");
  Serial1.print(PB_13);
  Serial.print("\t");
  Serial1.print(PB_14);
  Serial.print("\t");
  Serial1.println(PB_15);
  Serial1.println(PB_11);
  delay(1000);
}

The result shown here

Capture.PNG (10.74 KiB) Viewed 2967 times

I also print out the PB_11, however Black Pill FC411CE does not have PB11 on the board as shown in the picture below.


I try to directly call the 'PB11', but it got error here

Code: Select all

test_pin:20:19: error: 'PB11' was not declared in this scope; did you mean 'PB_11'?
   20 |   Serial1.println(PB11);
      |                   ^~~~
      |                   PB_11
exit status 1
'PB11' was not declared in this scope; did you mean 'PB_11'?

So 'PB_11' here might be the one cause the problem. Moreover the later pin will probably also been affected, haven't tested yet.

My computer development environment is: Windows 10 19043.1165, arduino IDE 1.8.16, core 2.0.0, upload method SWD through ST-LINK

Capture2.PNG (9.05 KiB) Viewed 2967 times

[fpiSTM]

There is no issue.
PB12 is the pin number while PB_12 is the pin name which is a combination of GPIO Port and pin.
For PB11(pin number) as it is not available physically on the board, it is simply not defined.