【求助】LED灯简单程序

皓尘听寒

一个红灯，一个绿灯，当光线>X时，红灯亮，在光线>X时，绿灯亮
新手求助，谢谢各位大佬！

皓尘听寒

请问该如何设计此程序？谢谢谢谢

希岩

[mw_shl_code=c,true]unsigned char  RedLight=12;      
unsigned char GreenLight=13;
#define  X    512   
int SensorValue = 0;  // variable to store the value coming from the sensor

void setup() {
  // put your setup code here, to run once:
    pinMode(RedLight, OUTPUT);
    pinMode(GreenLight, OUTPUT);

}

void loop() {
  SensorValue = analogRead(sensorPin);
  if( SensorValue>X )
   {digitalWrite(RedLight, HIGH);
   digitalWrite(GreenLight, LOW);
   }
  else
  { digitalWrite(RedLight, LOW);
    digitalWrite(GreenLight, HIGH);
  }[/mw_shl_code]