是控制LED闪烁发光的简单例程。该程序实际上是实用工程模板Demo的一个应用，直接从main( )函数开始编写。

在main( )函数的前面，定义了LED所在的GPIO端口和管脚。在main( )里，首先定义了一个变量ulClock，在调用函数clockInit( )时被初始化为当前的系统时钟频率，在后面对库函数SysCtlDelay( )调用时会用到该变量。

控制LED分3步走：调用函数SysCtlPeriEnable( )使能LED所在的GPIO模块，调用函数GPIOPinTypeOut( )配置LED所在的GPIO管脚为推挽输出，调用GPIOPinWrite( )对LED所在的GPIO管脚写0和写1实现LED闪烁发光的效果。-LED flashing light-emitting control routine simple. The program is practical works a Demo application templates directly from the main () function to start the preparation. In the main () function in front of the definition of the LED' s and pin GPIO port. In the main (), the first defines a variable ulClock, call the function in clockInit () was initialized to the current system clock frequency, the face of the Treasury function in the post-SysCtlDelay () call will use the variable. LED control points go to Step 3: Call Functions SysCtlPeriEnable () to enable the GPIO module LED is located, call the function GPIOPinTypeOut () where the LED configuration for the push-pull output GPIO pin, called GPIOPinWrite () is located on the LED pin GPIO write 0 and write 1 to achieve the effect of light-emitting LED flashes.