Processors today use pin muxing. The 2nd and 3rd are not meanings. They are the available options to be routed to those pins by setting a register in the processor. As long as you sue a function that is listed, you should have no problem. In other words, do not use a pin for UART1 that does not have UART1 as one of the listed options.
For IN use GPIO. For OUT use GPIO. DO not use the LCD pins because you said you wanted to support an undefined LCD. UART1 is fine. Gerald On Mon, Mar 3, 2014 at 10:53 AM, <[email protected]> wrote: > Thanks for the hint with the USB - I had fear that USB and serial input > are connected somehow. A powered hub is already bought. > > So for Serial I'll chose Pin 26 UART1 RXD and Pin 24 UART1_TXD. > > The voltage at the IO pins will always be in correct level, because I'll > use optocouplers to protect the BBB. > > But I'm confused, which pins will be the best for me. Nearly all pins have > a 2nd or 3rd meaning and I'm not experienced enough to identify the ones I > can use without causing trouble. > > Can you just tell me 8 ins and 8 outs? > > Thank You > > Kalle > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
