how to send lead Zero integer to string via serial port in Arduino?

Projects Programming
1

Hello I want to send Data 1 to 200 using serial port of arduino.

But my data format must be in leading zero like below

if my value is 2 then i have to send 002
if my value is 20 then i have to send 020
if my value is 200 then i have to send 200

with custom function.

2

What does your sketch look like so far?

If you want to display an integer value on Serial Monitor using three digits:

void PrintThreeDigits(unsigned value)
{
  if (value < 100)
    Serial.print('0');
  if (value < 10)
    Serial.print('0');
  Serial.print(value);
}
3

That's a neat function John, I'll have to remember that one.

4

Yes You r right but suppose i want to do specific string like below in C#
where Temp is 0 to 200
serialPort1.Write("{RSV|" + Temp.ToString("000") + "}")

{RSV|002}

So how can i achieve this with Arduino to Send like below

[RSV|002]

5

nick_avr:
Yes You r right but suppose i want to do specific string like below in C#
where Temp is 0 to 200
serialPort1.Write("{RSV|" + Temp.ToString("000") + "}")

{RSV|002}

So how can i achieve this with Arduino to Send like below

[RSV|002]

Arduino style

  Serial.print("[RSV|")
  if (value < 100)
    Serial.print('0');
  if (value < 10)
    Serial.print('0');
  Serial.print(value);
  Serial.print(']');

or C style:

  char s[20];
  sprintf(s, "[RSV|%03d]", Temp);
  Serial.print(s);

or Arduino String style:

  String s = "[RSV|";
  if (Temp < 100)
    s += '0';
  if (Temp < 10)
    s += '0';
  s += Temp;
  s += ']';
  Serial.print(s);
6

CrossRoads:
That's a neat function John, I'll have to remember that one.

Will you remember it or practice it?

7

johnwasser:
or C style:

  char s[20];

sprintf(s, "[RSV|%03d]", Temp);
 Serial.print(s);

I would like to say that the above snippet is still an "Arduino Style" as Serial.print() does not get executed in Turbo C++/PC Platform.

8

"Will you remember it or practice it?"
Just save it for now.