DSP通过CPLD控制灯，当按键按下时，将按键的状态传给DSP，然后DSP根据地址读取按键状态，再把命令发给灯，结果就可以实现按键控制灯-DSP CPLD to control light, when the button is pressed, the button state to the DSP, and DSP based on the address to read the button state, then the command issued Lights, the result