如何在串行总线(Arduino)中"separate"阅读写作？

Question

我正在做一个writes in并reads from Arduino（Uno）的应用程序。我希望Arduino的工作方式仅在数据可用时读取（如侦听器）并每次写入（定期使用delay）。但是我不知道如何设置侦听器（或者是否有办法做到这一点），因为我不希望delay影响reading。

 unsigned long timeDelay = 100;   //Some configurations
 String comand;
 char received;
 const int LED = 12;
void setup() {
  //start serial connection
  Serial.begin(9600);
  pinMode(LED, OUTPUT);   //LED is only a way that I know the Arduino is 
  digitalWrite(LED,LOW);  //reading correctly
}
void loop() {
  //How to separate this part--------------Reading from Serieal--------
  comand = "";
  while(Serial.available() > 0){    
    received = Serial.read();
    comand += received;
    if(comand == "DELAY"){            //Processing the command
      timeDelay = Serial.parseInt();
    }
  }
  if(comand == "Desliga"){            //Processing the command
     digitalWrite(LED,LOW);       //'Desliga' means 'turn on' in portuguese
  }
  else if(comand == "Liga"){          //Processing the command
    digitalWrite(LED,HIGH);       //'Liga' means 'turn off' in portuguese
  }
  //-------------------------------------------------------------------
  //From this other part-----------------Writing on Serial-------------
  int sensorValue = analogRead(A0);
  // print out the value you read:
  Serial.println(sensorValue);
  Serial.flush();
  delay(timeDelay);        // delay in between reads for stability
  //-------------------------------------------------------------------
}

OBS：我正在通过Java应用程序进行连接。所以我可以在那里设置timeDelay。如果我输入像 1000 （ms） 这样的timeDelay，那么我编写的一个命令（打开/关闭LED）将需要 1 秒才能处理。你们明白了吗？

有人有解决方案吗？

Answer 1

我建议使用Arduino的任务管理器来运行模拟代码。

我为此使用TaskAction。

您可以将模拟代码包装在函数中并创建一个TaskAction对象：

void AnalogTaskFunction(TaskAction * pThisTask)
{
  int sensorValue = analogRead(A0);
  // print out the value you read:
  Serial.println(sensorValue);
  Serial.flush();
}
static TaskAction AnalogTask(AnalogTaskFunction, 100, INFINITE_TICKS);

而在loop中，您可以运行任务并设置任务周期：

void loop() {
  //How to separate this part--------------Reading from Serieal--------
  comand = "";
  while(Serial.available() > 0){    
    received = Serial.read();
    comand += received;
    if(comand == "DELAY"){            //Processing the command
      AnalogTask.SetInterval(Serial.parseInt()); // Change the task interval
    }
  }
  if(comand == "Desliga"){            //Processing the command
     digitalWrite(LED,LOW);       //'Desliga' means 'turn on' in portuguese
  }
  else if(comand == "Liga"){          //Processing the command
    digitalWrite(LED,HIGH);       //'Liga' means 'turn off' in portuguese
  }
  AnalogTask.tick(); // Run the task
}

注意：Arduino的其他任务管理器可用，这只是我熟悉的那个。您可能想探索其他内容。