In my design, will use PB29 as an input pin to detect the status of the external device, but I find that even though I pull up the PB29 to almost 3.3v by a pull-up resistor, I still read the pin value as 0x0(read the value through GUTS_CPDAT register), why?
Could you please help to give some comments? Thanks a lot!
Meanwhile, I find some description as below in the P1021RM.pdf:
so, PB29 can be controlled by the using GUTS_CPDIR2n, GUTS_CPDAT registers, not
need to configure GUTS_PMUXCR, since from the above description, CE_PB[29 : 30] always functions as QE pins.