LPC11C14 UART NXP s official website routines have done the experiment no problem

UART\Common\inc\clkconfig.h
....\......\...\core_cm0.h
....\......\...\gpio.h
....\......\...\LPC11xx.h
....\......\...\system_LPC11xx.h
....\......\...\timer16.h
....\......\...\timer32.h
....\......\...\type.h
....\......\...\uart.h
....\......\src\clkconfig.c
....\......\...\core_cm0.c
....\......\...\gpio.c
....\......\...\Retarget.c
....\......\...\startup_LPC11xx.s
....\......\...\system_LPC11xx.c
....\......\...\timer16.c
....\......\...\timer32.c
....\......\...\uart.c
....\UART\FLASH.ini
....\....\Lst\startup_LPC11xx.lst
....\....\...\UART.map
....\....\Obj\core_cm0.crf
....\....\...\core_cm0.d
....\....\...\core_cm0.o
....\....\...\ExtDll.iex
....\....\...\startup_LPC11xx.d
....\....\...\startup_LPC11xx.o
....\....\...\system_lpc11xx.crf
....\....\...\system_lpc11xx.d
....\....\...\system_lpc11xx.o
....\....\...\UART.axf
....\....\...\uart.crf
....\....\...\uart.d
....\....\...\UART.hex
....\....\...\UART.htm
....\....\...\UART.lnp
....\....\...\uart.o
....\....\...\UART.plg
....\....\...\UART.sct
....\....\...\UART.tra
....\....\...\uarttest.crf
....\....\...\uarttest.d
....\....\...\uarttest.o
....\....\...\UART_sct.Bak
....\....\RAM.ini
....\....\UART.Opt
....\....\UART.Uv2
....\....\UART.uvopt
....\....\UART.uvproj
....\....\uarttest.c
....\....\UART_UART_Debug.dep
....\....\UART_UART_Release.dep
....\Common\inc
....\......\src
....\UART\Lst
....\....\Obj
....\Common
....\UART
UART

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