I'm using a TWR-K64F-120M Tower Module together with a TWR-SER module.
I've created a new project using PEX and KSDK 1.2 with Design Studio 3.0.
Using PEX I've added a UART component using UART5 on the TWR-SER. When I call UART_DRV_SendData() it returns success, but just constantly outputs the first character of the message on the terminal. If I use UART_DRV_SendDataBlocking it just times out. I've also tried changing to UART1 via OpenSDA virtual terminal with the same results.