warning: implicit declaration of function 'ITM_SenderChar' is invalid in C99 issue

Hi. I came across the warning message as follow warning: implicit declaration of function 'ITM_SenderChar' is invalid in C99 when I implement ITM_SendChar('\r'); what am I supposed to...
warning: implicit declaration of function 'ITM_SenderChar' is invalid in C99 issue

Hi. I came across the warning message as follow warning: implicit declaration of function 'ITM_SenderChar' is invalid in C99 when I implement ITM_SendChar('\r'); what am I supposed to...
warning: implicit truncation from 'int' to bitfield....

Dear Forum, I have searched all of Keil's website, manuals and the internet about this issue and have found nothing that can eliminate this compiler warning in my "C" source code. I am getting...
warning: implicit truncation from 'int' to bitfield....

Dear Forum, I have searched all of Keil's website, manuals and the internet about this issue and have found nothing that can eliminate this compiler warning in my "C" source code. I am getting...
IMPLICIT ERROR

I am trying to write and read pin value from stm32 board, by using keil5 ARM , the problem i am facing is when i use pin8 in keil code it's showing some iplicit error. const char pinsend[]= {C8_Pin...