This an working code of external interrupt in LPC1768 micro controller.

ext_int
.......\core_cm3.c
.......\core_cm3.crf
.......\core_cm3.d
.......\core_cm3.h
.......\core_cm3.o
.......\einttest.c
.......\einttest.crf
.......\einttest.d
.......\einttest.o
.......\ExtDll.iex
.......\extint.c
.......\extint.crf
.......\extint.d
.......\extint.h
.......\extint.o
.......\ext_int.axf
.......\ext_int.hex
.......\ext_int.htm
.......\ext_int.lnp
.......\ext_int.map
.......\ext_int.plg
.......\ext_int.tra
.......\ext_int.uvgui.Dinesh
.......\ext_int.uvgui_Dinesh.bak
.......\ext_int.uvopt
.......\ext_int.uvproj
.......\ext_int_Target 1.dep
.......\ext_int_uvopt.bak
.......\ext_int_uvproj.bak
.......\JLinkLog.txt
.......\JLinkSettings.ini
.......\LPC17xx.h
.......\lpc17xx_uart.h
.......\lpc_types.h
.......\startup_LPC17xx.d
.......\startup_LPC17xx.lst
.......\startup_LPC17xx.o
.......\startup_LPC17xx.s
.......\system_LPC17xx.c
.......\system_lpc17xx.crf
.......\system_lpc17xx.d
.......\system_LPC17xx.h
.......\system_lpc17xx.o
.......\type.h
.......\uart_polling_test.c
.......\uart_polling_test.crf
.......\uart_polling_test.d
.......\uart_polling_test.o

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