At a little bit of a lost here.. I'm not using MQX just some simple, I thought, GPIO writing and reading. I seems to not clearly under stand the data sheet.
IOMUXC->SINGLE.PTC15 = 0x1D; // set as input with 47K pull up on PTC15
rd = GPIO1->PDIR; // read and bit 28 I think is PTC15 and it should be HIGH
what am I missing..