How to operate U1 and U2 ports

dlyltm

How to operate U1 and U2 ports [Copy link]

LM3S9B90 has 3 serial ports. There is no problem operating U0 port according to the routine given by Stalleris. But the same process does not work for U1 and U2 serial ports. It does not work at all. Because U0 port uses PA0 and PA1 pins by default, and can only use these two pins. But U1 and U2 are different, they can use multiple pins. But how to explicitly assign a pin to a serial port, I can't find a specific library function, nor related routines (Zhou Ligong's tutorial downloaded from the Internet does have a tutorial on operating U2, but it is also wrong. It doesn't work at all. That is the method for operating U0). Experts are welcome to give me advice.

academic

This requires using GPIOPinConfigure() to configure the multiplexed pins.

luoxi0

I have the same problem, did you solve it?