通过MSP430F5529MCU的AD片内外设，采集外部电平信号，并将得到的数字量变换成为对应8个级别，分别对应八盏LED灯，实际应用是采集音频信号。-By MSP430F5529MCU of the AD-chip peripherals, the acquisition of external level signal, and the resulting digital value converted into the corresponding eight levels, corresp