Chief Delphi - define irswitch?

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define irswitch?

how do you define the ir board commands in the program.

this is what we have but we don't know if it is right

#define IRswitch1
#define IRswitch2
#define IRswitch3
#define IRswitch4

or can someone post how they defined the IRswitch?

Re: define irswitch?

You need to use #define to assign a value to the IRswtich things. They are only placeholders, the compiler will go through and replace all "IRswitch1" with whatever you put after it. So it would like:

Code:

#define IRswitch1 rc_dig_in01

#define IRswitch2 rc_dig_in02

#define IRswitch3 rc_dig_in03

#define IRswitch4 rc_dig_in04

Assuming you used those four for your IR wiring. And then to use them:

Code:

if (!IRswitch1)    //If the IR has been pressed

auto_routine_1();         //Do whatever when switch is down

}

Just as an example, here's how we defined it:

Code:

// IR Inputs

#define IR_DIG_1                                                 rc_dig_in07

#define IR_DIG_2                                                 rc_dig_in08

#define IR_DIG_3                                                 rc_dig_in09

#define IR_DIG_4                                                 rc_dig_in10



// IR Values

#define IR_DISCONNECTED                                (IR_DIG_1 && IR_DIG_2 && IR_DIG_3 && IR_DIG_4)

#define IR_1                                                 (IR_DIG_1 && !IR_DISCONNECTED)

#define IR_2                                                 (IR_DIG_2 && !IR_DISCONNECTED)

#define IR_3                                                 (IR_DIG_3 && !IR_DISCONNECTED)

#define IR_4                                                 (IR_DIG_4 && !IR_DISCONNECTED)

That way you won't get confused when the IR board is out.

Re: define irswitch?

We NOT our digital ins right there at the macro. Like what psy_wombats said, but I think that it reads better in the if statements. Digital inputs become false when the circuit is closed. =)

Code:

#define IRswitch1 !rc_dig_in01

Re: define irswitch?

Quote:

Originally Posted by whitetiger0990 (Post 695814)

Digital inputs become false when the circuit is closed.

That's correct for switches or "open-collector output" sensors that complete a connection to ground. But the IR sensor is not that kind of circuit. It provides a logic level output, with the digital input resting at zero and going to one when the signal is recognized.