How to stop or pulse the Serial Monitor during the testing?

Projects Programming
1

Hi,
any Hotkey can do it?
Thanks
Adam

2

What exactly do you want to do ? It is not obvious from the title of the topic

3

the serial monitor shown data very fast, how can stop or pulse it to do analyze。
I just remove the USB cable now.

4

In the serial monitor there is a checkbox that you can uncheck to stop auto scroll.

Or put delays in your code with delay or millis() timing to slow the output of serial data.

1 Like
5

I know of three ways to do this:

first way is to disable autoscroll in the serial monitor

second way is to use the dbgi-macro like in the demo-code posted below

third way: modifiy your code that the debug-output depends on a switches state
and use a print-debug-function that has something like this

if (DebugSwitch == HIGH) {
  Serial.print();
}

Me personal I prefer the dbg and the dbgi-macro because it is much shorter to write

// start of macros dbg and dbgi
#define dbg(myFixedText, variableName) \
  Serial.print( F(#myFixedText " "  #variableName"=") ); \
  Serial.println(variableName);
// usage: dbg("1:my fixed text",myVariable);
// myVariable can be any variable or expression that is defined in scope

#define dbgi(myFixedText, variableName,timeInterval) \
  do { \
    static unsigned long intervalStartTime; \
    if ( millis() - intervalStartTime >= timeInterval ){ \
      intervalStartTime = millis(); \
      Serial.print( F(#myFixedText " "  #variableName"=") ); \
      Serial.println(variableName); \
    } \
  } while (false);
// end of macros dbg and dbgi



unsigned long MyTestTimer = 0;                   // variables MUST be of type unsigned long

//helper-function for non-blocking timing
boolean TimePeriodIsOver (unsigned long &periodStartTime, unsigned long TimePeriod) {
  unsigned long currentMillis  = millis();  
  if ( currentMillis - periodStartTime >= TimePeriod )
  {
    periodStartTime = currentMillis; // set new expireTime
    return true;                // more time than TimePeriod) has elapsed since last time if-condition was true
  } 
  else return false;            // not expired
}


unsigned long myFastCounter;
unsigned long mySlowCounter;

void setup() {
  Serial.begin(115200);
  Serial.print( F("\n Setup-Start  \n") );
  myFastCounter = 0;
  mySlowCounter = 0;
}


void loop() {
  myFastCounter++;
  // loop is running fast but only once per second (1000 milliseconds)
  // the value myFastCounter is printed to the serial monitor
  dbgi("dbgi-demo",myFastCounter,1000);

  // non-blocking timing-function
  // evaluates true only if milliseconds given as the second parameter
  // have passed by
  if (TimePeriodIsOver (MyTestTimer,2000) ) {
    mySlowCounter++;    
    dbg("dbg-Demo",mySlowCounter);
  }

  // if you un-comment the line below. The serial monitor will be flooded
  // with messages
  //dbg("dbg-flooding-demo",mySlowCounter);  
  // this demosntrates why dbgi is the better choice in fast running loops
}

best regards Stefan

1 Like
6

Thanks.
BTW: unchecked the autoscroll doesn't work in my side, the data still run.

7

Which version of the IDE and which Operating System ?

1 Like
8

Thanks.
1.8.3

9

And the OS ?

How about installing a much later version of the IDE ?

1 Like
10

Thanks.
I am using WIN7.
keep this Version to upload to NANO, that newer version may not do.

11

Why do you say that ?

1 Like
12

I can only upload to NANO by this version at least tested in my pc then.

13

so this means

you installed Arduino-IDE version 1.8.12 or 1.8.13 tried to upload code to an arduino nano and it did not work?
best regards Stefan

1 Like
14

Thanks.
Exactly.

15

When you try to upload with a newer version of the IDE, do you get any error message? if so, post the entire error message in code tags.

What actually happens?

1 Like
16

Thanks.
here: Nano upload Access is denied

17

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