Using DebugPrintF and Forbid
Posted: Fri Mar 16, 2018 9:15 am
Does DebugPrintF enter wait state? In other words, should DebugPrintFs be removed out of Forbid/Permit context?
No, DebugPrintF() waits on the "done" bit in the serial device register. It uses no interrupts and hangs the machine while it outputs the string of characters.
Forbid/Permit calls are unnecessary for DebugPrintF() to work and will have no effect on it.