:D Really great! They should put this in the standard Arduino environment!

Hi Mikal,

Looks good! A small trick to get a leading zero (e.g. in a time string)

int h = 14;
int m = 6
Serial << ((h<10)?"0":"") << h << ":" << ((m<10)?"0":"") << m << endl;

it would be nice to have something parametrised like

Serial << ZERO(hour,2) << ":" << ZERO(minute,2) << endl;

Serial << ZERO(money, 4) << endl;

addition, to fill output with some char

struct _FILL
{
char ch;
int len;
_FILL(char c, int l): ch(c), len(l)
{}
};

inline Print &operator <<(Print &obj, const _FILL &arg)
{ for (int i=0; i< arg.len; i++) obj.write(arg.ch); return obj; }

examples
Serial << _FILL('=', 20) << endl;

int table[10] = {5,10,4,6,8,12,6,5,3,2};
for (int i=0; i<10; i++)
{
Serial << _FILL('*', table[i]) << endl;
}

see also – http://arduino.cc/forum/index.php/topic,131283.0.html -

struct _TIME
{
uint8_t hour;
uint8_t minu;
uint8_t sec;
_TIME(uint8_t h, uint8_t m, uint8_t s): hour(h), minu(m), sec(s)
{}
};

inline Print &operator <<(Print &obj, const _TIME &arg)
{ obj.print(((arg.hour<10)?"0":"")); obj.print(int(arg.hour));
obj.print(((arg.minu<10)?":0":":")); obj.print(int(arg.minu));
obj.print(((arg.sec<10)?":0":":")); obj.print(int(arg.sec));
return obj; }

Not optimized but might be useful

Hey,

Thanks for this nice library, serial communication works just fine, but i have a problem with printing messages on lcd. Im using LiquidCrystal from arduino standard lib in order to get lcd to work, and yours “steaming” for communicate with it. How can i clear the screen using your library? Also how can i set cursor in custom line/row. In LiquidCrystal im using lcd.clear(), lcd.setCursor (x,y) etc.

Thanks in advance.
tony

Good work. I always wondered why something like this wasn’t included in the first place considering how useful and relatively standard it in nowadays.

I found that << endl is not the same as << "\n". With endl I can't read the serial monitor output to Excel. endl generates an unknown character.

Dear Mikal,
Please can you add examples of setting the digits / precision?
For instance, this works fine:
pString << _FLOAT(floatblabla, 1); // precision = 1 digit

Best regards

Albert van Dalen

Hi, Im having errors while using this library, how do you get it to work after download?

Im trying to print a message followed by a single variable and get this error:
Single_Stepper_Motor_Control:63: error: no match for ‘operator<<' in 'Serial << ("Front Speed: ")'

The syntax Im using is as follows, if Im mistaken please advice:
Serial << "Front Speed: " << time;

I copied the library to the libraries of IDE for arduino, dont know if there is any other thing that I should do.

No Mikal I forgot that, I included and its working fine thanks.

When you put the example code for Flash and streaming together into one code. Some functions from each library don’t work anymore (endl, etc…)
why ?

Hi Mikal,

Great stuff. I used this on my Anthrolume project, and now I’m refitting that project with a Maple instead of the Arduino Mega I used originally. You’ll be glad to know that Streaming.h works perfectly as-is on the Maple! :-)

Can this library send a clear line or reset line or clear screen to the serial monitor of the arduino IDE?

Excellent!
I enhanced the library with some of the ideas in the comments
I even stumbled across a small omission – _FLOAT was not in the keywords file
I also enhanced the example sketch
I’ be happy to share what I have so far