Serial write....

Projects General Guidance
1

is there any way that i can send data to usb port via for continuously one second?
for example
Serial.println(0);

can i send this "0" continuously for one second?

2

can i send this "0" continuously for one second?

Yes, permission is granted.

Not that sending '0', , over and over as ASCII data is quite the same as sending 0 as a binary value over and over.

Why do you want to do this?

3

i want to test a visual basic program.
can u please tell me the code?

4

Find one of the serial examples that comes with the Arduino IDE. (The Arduino program installed on your computer.). Modify it so it only prints zero. Then test it.

5

can u please tell me the code?

unsigned long startedDoingSomethingStupid = 0;
bool doSomethingStupid = true;

void setup()
{
   Serial.begin(115200);
}

void loop()
{
   if(doSomethingStupid)
   {
     startedDoingSomethingStupid = millis();
     while(millis() - startedDoingSomethingStupid < 1000) // do something stupid for one second
     {
        Serial.write((byte)0);
     }
     doSomethingStupid = false;
   }
}

If you get the impression that I think you are going about testing something all wrong, perhaps you are right.