Embedded cortex-M3 development board development: the five key control led to a lamppost flashing, and the information is displayed in 4 m word pipe War, through uart upload. When a key is pressed, the buzzer sounded to 0.2s cycle, no key is pressed, the buzzer does not sound.

experiment exercise 2\Experiment.map
.....................\Experiment.plg
.....................\Experiment.uvgui.Gibson
.....................\Experiment.uvgui.maoxc
.....................\Experiment.uvgui.Navi
.....................\Experiment.uvgui_Gibson.bak
.....................\Experiment.uvgui_maoxc.bak
.....................\Experiment.uvgui_Navi.bak
.....................\Experiment.uvopt
.....................\Experiment.uvproj
.....................\Experiment_Target 1.dep
.....................\Experiment_uvopt.bak
.....................\Experiment_uvproj.bak
.....................\GPIODriverConfigure.c
.....................\GPIODriverConfigure.h
.....................\I2C0ISR.c
.....................\I2C0ISR.h
.....................\I2CConfigure.c
.....................\I2CConfigure.h
.....................\main.c
.....................\main.d
.....................\NixieTube.h
.....................\readme.txt
.....................\.vmdk\Experiment.axf
.....................\.....\Experiment.htm
.....................\.....\Experiment.lnp
.....................\.....\Experiment.plg
.....................\.....\Experiment.sct
.....................\.....\Experiment.tra
.....................\.....\Experiment_sct.Bak
.....................\.....\ExtDll.iex
.....................\.....\gpiodriverconfigure.crf
.....................\.....\gpiodriverconfigure.d
.....................\.....\gpiodriverconfigure.o
.....................\.....\i2c0isr.crf
.....................\.....\i2c0isr.d
.....................\.....\i2c0isr.o
.....................\.....\i2cconfigure.crf
.....................\.....\i2cconfigure.d
.....................\.....\i2cconfigure.o
.....................\.....\main.crf
.....................\.....\main.d
.....................\.....\main.o
.....................\.....\Startup.d
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.....................\.....\sysctlconfigure.crf
.....................\.....\sysctlconfigure.d
.....................\.....\sysctlconfigure.o
.....................\.....\systickconfigure.crf
.....................\.....\systickconfigure.d
.....................\.....\systickconfigure.o
.....................\.....\systickisr.crf
.....................\.....\timerconfigure.crf
.....................\.....\timerconfigure.d
.....................\.....\timerconfigure.o
.....................\.....\uartconfigure.crf
.....................\.....\uartconfigure.d
.....................\.....\uartconfigure.o
.....................\.....\watchdogconfigure.crf
.....................\.....\watchdogconfigure.d
.....................\.....\watchdogconfigure.o
.....................\Startup.s
.....................\SysCtlConfigure.c
.....................\SysCtlConfigure.h
.....................\SysTickConfigure.c
.....................\SysTickConfigure.h
.....................\TimerConfigure.c
.....................\TimerConfigure.h
.....................\UARTConfigure.c
.....................\UARTConfigure.h
.....................\WatchDogConfigure.c
.....................\WatchDogConfigure.h
.....................\rvmdk
experiment exercise 2

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