I use the development board is MIMXRT1064 core board, is used by flying/routines, see the main function of the content in the serial port here is this:
Int main (void)
{
DisableGlobalIRQ ();
Board_init ();//be sure to keep this function is used to initialize the MPU clock debug serial port
EnableGlobalIRQ (0);
//the name of the print function as the PRINTF to note must be capitalized
PRINTF (" this is test \ n ");
While (1);
}
Then I went to see I think may be on the header file, but only just can't find where the PRINTF function definition, there are also used by libraries of bosses can help me solve this problem? Of the new belt \ poor