对EVK1100板,创建一个菜单系统。该系统应采用的液晶显示传感器（热敏电阻，电位器和光感应器（LDR的）

推按钮PB0 - PB3应该选择一个项，并开始

采集数据,由传感器连接到ADC。该ADC值应转换一个介于0 - 3.3V的电压。

推动的操纵杆按钮，应该将系统返回到初始的菜单。该按钮状态应该使用中断

该ADC值应予以使用轮询技术。

该ADC是采用了3.3V的参考电压。-Write a C program which creates a menu system. The system should utilizes the LCD

* display and the built in sensors(thermistor, potentiometer and light sensor (LDR)

* on the EVK1100 board.

* Pushing the pushbutton PB0-PB3 should select a item on the menu, and start taking

* data from the ADC connected to the selected sensor. The ADC value should be converted

* to a voltage between 0-3.3V.

* Pushing the Joystick button, should return the system to the initial menu.

*

* The pushbutton states should be registered using interrupt

* Interrupt functions are available in gpio.h

*

* The ADC has 8 channel and 10-bit resolution.

* The ADC value should be read using polling technique.

*

* The ADC is powered with a 3.3V reference voltage.