RCM4300 problem port B

Dear all,

For a project I’am using the RCM4300. And I have a question about it.

What I try to make is a program for a LCD-display. The display uses 3 control and 8 data signals. For the control signals I use port A and for the data signals port B.

I have some problem with port B. How can I set port B for this function? I treid, but I cannot set or reset PB0. I witten someting about auxiliary I/O bus but I do not know how to set it and control it.

Kind regards,


That is because PB0 is used internally for clocking data to the SD card. You should not try to use PB0 externally. Choose a different port pin.