Resolved! I cannot display Hello World on port 0. I have the STM32F429I DISC-1 board.
The steps that I had done (STM32F429I-DISC1 Board)1. copy and paste the code into syscalls.c2. edit the _write function4. build the project5. edit the debugger setting6. start debug7. enable the SWV ITM Data Console8. enable the port 0 in SWV9. the s...