Arduino how to use namespace?

Question

I am using the Arduino IDE to write code and am trying to understand the namespace stuff. My thought is, is there a way to shorten the many places (in my code) where I have things like:

Serial.print("a="); Serial.print(a); Serial.print(" b="); Serial.println(b);

to something shorter like:

S.print(...

or

sprint(...

Can it be done?

I tried using String concatenation but it is very limited and expensive. That is just adding one

String s;

to my code at the global level increased the download size by 1482 bytes. And you can't do something like:

Serial.print("a=" + a); Serial.println(" b=" + b);

because it cant handle starting a concatenation with a literal string.

Any thoughts welcome.

score 4 · Accepted Answer · edited May 23 '17 at 12:07

4

Arduino uses the C++ language. It is not considered good practice, but you could use a preprocessor macro:

#define sprint Serial.print

edited May 23 '17 at 12:07

Community

1
1

answered Nov 23 '13 at 16:54

joews

29,767
10
79
91

Thank you. Yes, just after my post I found #define also. It helps a lot. – Harvey Nov 23 '13 at 17:16

score -1 · Answer 2 · answered Jul 29 '14 at 15:16

-1

You could use a pointer and member de-reference operator, like this:

HardwareSerial *my_device;

void setup()
{
  my_device->begin(9600);
  delay(100);
}

void loop()
{
  if (my_device->available())
  {
    int r = my_device->read();
    // etc.
  }
}

answered Jul 29 '14 at 15:16

Renato Aloi

300
2
9

sorry, the question is about keeping code short, my anwser do not apply to this case. Renato – Renato Aloi Jul 29 '14 at 15:32

Arduino how to use namespace?

2 Answers2