在特定条件下停止程序

Question

今天我用一个程序问题问候你，我的项目使用光作为墙上伺服的输入。光线会进入房间，阴影会下降，如果没有光线，阴影会消失。我想在arduino代码中的一个void循环中做两个条件，除非条件改变，否则只适用一次。通过这样说我的意思是，我希望这个无效循环持续运行，其中我有两个条件。如果连续两次满足相同的条件（即传感器读数在800和10000之间，如5000和6032），则不会运行。如果满足一个条件，然后另一个条件满足，那没关系。这里是我的代码和任何帮助，以什么参考命令我应该使用或我的下一步行动将不胜感激。

// Reports the frequency from the TSL230, higher number means brighter 
// Part: http://www.sparkfun.com/products/8940 
// Article: http://bildr.org/2011/08/tsl230r-arduino/ 

#include <Servo.h> 
Servo myservo1; 
int TSL230_Pin = 4; //TSL230 output 
int TSL230_s0 = 3; //TSL230 sensitivity setting 1 
int TSL230_s1 = 2; //TSL230 sensitivity setting 2 

int TSL230_samples = 30; //higher = slower but more stable and accurate 

void setup(){ 
    Serial.begin(9600); 
    setupTSL230(); 
    pinMode(5,OUTPUT); 
} 


void loop(){ 

    float lightLevel = readTSL230(TSL230_samples); 
    Serial.println(lightLevel); 

if(lightLevel>800 && lightLevel<1000) 
    { 
    myservo1.attach(5); 
    myservo1.writeMicroseconds(1300);delay(1000); 
    myservo1.writeMicroseconds(1500);delay(5000000); 

} 

else if(lightLevel<800) 
{ 
    myservo1.attach(5); 
    myservo1.writeMicroseconds(1700);delay(5000); 
    myservo1.writeMicroseconds(1500);delay(5000000); 
} 
} 

void setupTSL230(){ 
    pinMode(TSL230_s0, OUTPUT); 
    pinMode(TSL230_s1, OUTPUT); 

    //configure sensitivity - Can set to 
    //S1 LOW | S0 HIGH: low 
    //S1 HIGH | S0 LOW: med 
    //S1 HIGH | S0 HIGH: high 

    digitalWrite(TSL230_s1, LOW); 
    digitalWrite(TSL230_s0, HIGH); 
} 



float readTSL230(int samples){ 
//sample light, return reading in frequency 
//higher number means brighter 

    float start = micros(); 
    int readings = 0; 

    while(readings < samples){ 
    pulseIn(TSL230_Pin, HIGH); 
    readings ++; 
    } 

    float length = micros() - start; 
    float freq = (1000000/(length/samples)) * 10; 

    return freq; 
} 

Answer 1

首先添加到您的设置...

void setup(){ 
Serial.begin(9600); 
setupTSL230(); 
pinMode(5,OUTPUT); 
myservo1.attach(5); 

}

然后，让一个新的变量，并把它添加到你的if语句

Boolean once; // declare this with your other int variables 
if(lightLevel > 800 && lightLevel < 1000 && once==True) 
    { 
    myservo1.writeMicroseconds(1300);delay(1000); 
    myservo1.writeMicroseconds(1500);delay(1000); 
    once = False; 
    } 
else if(lightLevel<800 && once == False) 
    { 
    myservo1.writeMicroseconds(1700);delay(5000); 
    myservo1.writeMicroseconds(1500);delay(1000); 
    once = True; 
    }