I googled about it, but can't find the answer. As I would guess I would have to inherit from the Print class and somehow pass to its print methods the part of my object I would like to be printed. But I am not sure how to go about it or if it is even possible.
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There is a class called Printable. If you inherit from that, and implement the size_t printTo(Print& p) function, your object can then be passed to the print functions:
class myClass : public Printable {
private:
int _val1;
int _val2;
public:
myClass(int v1, v2) : _val1(v1), _val2(v2) {}
size_t printTo(Print& p) const {
size_t r = 0;
r += p.print("One: ");
r += p.print(_val1);
r += p.print(" Two: ");
r += p.print(_val2);
return r;
}
};
Then:
myClass ob(4, 5);
Serial.println(ob);
=> One: 4 Two: 5
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Majenko, thankyou very much for your answer. I got it working. Just little comment on your code. I think instead of "size_t printTo(Print& p)" should be "size_t printTo(Print& p) const". Thankyou – Mykolas Jun 19 '18 at 19:31
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I was getting an error of not overriding virtual function. Once added the const, all ok. – Mykolas Jun 19 '18 at 19:39
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How are we supposed to know these things? The arduino documentation is quite... lacking... to say the best. Digging through the source code on github? – vsz Jun 20 '18 at 6:42
