What does this bit of code do?

Projects Programming
1

Hello,

Im using Jchristensen's code (SetSerial) to set the time using the serial monitor.
Ive been looking at the code trying to understand it but I don't know what this bit of code does.
Does anyone know?

void printI00(int val, char delim)
{
    if (val < 10) Serial << '0';
    Serial << _DEC(val);
    if (delim > 0) Serial << delim;
    return;
}

Full code:

Thank you

2

Note this in the sketch

#include <Streaming.h>

which enables the use of << to send data to Serial

3

It's a bit of a hack for provide a nicely-formatted time on the serial output.

If the time was, say, five minutes past ten, you might have:

byte hour = 10;
byte minute = 5;
Serial.print(hour);
Serial.print(":");
Serial.println(minute);

...and the result would be "10:5", which probably wouldn't be what you wanted. The code you posted detects if the value is less than 10, and pads it with a zero, so you'd get: "10:05" instead.

4

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