passing multiple number values via serial monitor

Projects Programming
1

I have an arduino application with several methods. My goal is to be able to selectively call these methods, as well as pass arguments, using only the serial monitor. So far I have concluded I need to use some sort of delimiter to separate my numbers, so for instance using '/' as a delimiter

1/50/10/

would call the method pertaining to 1, passing the arguments 50,50.

But I am having trouble implementing.

Can any arduino C++ experts help?.

2

How about posting what you have so far?

3

I have a string value 'func1/50/70'

I need to parse it so that I have 'func1' as a string and both 50 and 70 as int values.

Can any C++, arduino experts help?

4

Look at strtok() and atoi()

5

Use <string.h> and use strtok()

Use <stdlib.h> for strtol() function.

6

The comma , is an oft used delimiter (see CSV or Comma Separated values). The slashes / can sometimes have special meanings so I would be inclined to avoid them.

It may also be useful to have start- and end-markers before and after the actual data - such as <1,50,10>

...R

7

This is essentially the same as your other post. Don't cross post!

8

Line oriented input would work here. Read into a string buffer until you get a carriage return. Call strtok() on the string buffer to get each token, keep calling strtok() until it returns NULL or you detect a parse error.

9

A way to send numeric data to specific components, servos in this case.

//zoomkat 11-22-12 simple delimited ',' string parse 
//from serial port input (via serial monitor)
//and print result out serial port
//multi servos added 

String readString;
#include <Servo.h> 
Servo myservoa, myservob, myservoc, myservod;  // create servo object to control a servo 

void setup() {
  Serial.begin(9600);

  //myservoa.writeMicroseconds(1500); //set initial servo position if desired

  myservoa.attach(6);  //the pin for the servoa control
  myservob.attach(7);  //the pin for the servob control
  myservoc.attach(8);  //the pin for the servoc control
  myservod.attach(9);  //the pin for the servod control 
  Serial.println("multi-servo-delimit-test-dual-input-11-22-12"); // so I can keep track of what is loaded
}

void loop() {

  //expect single strings like 700a, or 1500c, or 2000d,
  //or like 30c, or 90a, or 180d,
  //or combined like 30c,180b,70a,120d,

  if (Serial.available())  {
    char c = Serial.read();  //gets one byte from serial buffer
    if (c == ',') {
      if (readString.length() >1) {
        Serial.println(readString); //prints string to serial port out

        int n = readString.toInt();  //convert readString into a number

        // auto select appropriate value, copied from someone elses code.
        if(n >= 500)
        {
          Serial.print("writing Microseconds: ");
          Serial.println(n);
          if(readString.indexOf('a') >0) myservoa.writeMicroseconds(n);
          if(readString.indexOf('b') >0) myservob.writeMicroseconds(n);
          if(readString.indexOf('c') >0) myservoc.writeMicroseconds(n);
          if(readString.indexOf('d') >0) myservod.writeMicroseconds(n);
        }
        else
        {   
          Serial.print("writing Angle: ");
          Serial.println(n);
          if(readString.indexOf('a') >0) myservoa.write(n);
          if(readString.indexOf('b') >0) myservob.write(n);
          if(readString.indexOf('c') >0) myservoc.write(n);
          if(readString.indexOf('d') >0) myservod.write(n);
        }
         readString=""; //clears variable for new input
      }
    }  
    else {     
      readString += c; //makes the string readString
    }
  }
}