The UART2 is dead(It cann't connect terminal and UART2 tx send a byte data continously.),when imx6q UART2 recieves a error data which includes a start bit,8 bits data,no parity,no stop bit.Meanwhile "reboot" command is ineffective,"reboot -f" works. UART2 works normally,after rebooting the system via "reboot -f".
I do some work.I reconfigure the register corressponding to UART2(use devmem command) ,when above the problem happens.But it didn't works.I check FRAERREN of UART2_UCR3 disabled.I didn't know why this happened.
Another question,how to enable UART2 frame error interrupt in UART driver .