msp430f6638系列12位AD转换。AD 转换结束会产生中断，编写AD 中断服务程序。利用信号发生器输出信号作为AD 转换的输入，根据输入电压的大小控制LED 灯的亮灭(例如随着输入电压值的增大，LED1 到LED5 按顺序点亮；随着输入电压值减小，LED 灯按顺序熄灭）LED 和单片机IO 口连接如下图所示。(Msp430f6638 series 12 bit AD conversion. The end of the AD transformation generates interrupts and writes the AD interrupt service routine. Using the signal generator as the AD transform, according to the input voltage to control the size of LED bright lights (for example, with the increase in input voltage value LED1 to LED5 according to the order of light; as the input voltage decreases, the LED lamp in order to extinguish) LED and SCM IO port connected as shown below.)