Create Declaration / Definition in current file

[FernandoGarcia]

Hi!

I would to know how to create function prototype in an Arduino code while using Platformio.

I'm talking about this type of code:

main.cpp

#include <Arduino.h>
#include <Bounce2.h>

#define NUM_RELAYS 3
#define INITIAL_STATE LOW  // Initial state = HIGH to active LOW relay model.

struct INFOS
{
  const byte relayPin;
  bool relayState;
  const byte buttonPin;
};

INFOS info[NUM_RELAYS] =
{
  {2, INITIAL_STATE, 18}, // Relay 0 pin, relay 0 state, button 0 pin
  {4, INITIAL_STATE, 19},
  {5, INITIAL_STATE, 21}
};

Bounce2::Button button[NUM_RELAYS] = {Bounce2::Button()};

void setup()
{
  Serial.begin(9600);

  for (byte i = 0; i < NUM_RELAYS; i++)
  {
    button[i].attach(info[i].buttonPin, INPUT_PULLUP);
    button[i].setPressedState(LOW);
    button[i].interval(5);

    pinMode(info[i].relayPin, OUTPUT);
    digitalWrite(info[i].relayPin, info[i].relayState);
  }
}

void loop()
{
  for (byte i = 0; i < NUM_RELAYS; i++)
  {
    button[i].update();

    if (button[i].pressed())
    {
      info[i].relayState = !info[i].relayState;
      digitalWrite(info[i].relayPin, info[i].relayState);
      printDebug(i);
      break;
    }
  }
}

void printDebug(byte i)
{
  Serial.print("Button ");
  Serial.print(i);
  Serial.print(" pressed, relayState ");
  Serial.print(i);
  Serial.print(": ");
  Serial.println(info[i].relayState);
}

The compiling error for this code is:

src/main.cpp: In function 'void loop()':
src/main.cpp:47:7: error: 'printDebug' was not declared in this scope
       printDebug(i);
       ^~~~~~~~~~
src/main.cpp:47:7: note: suggested alternative: 'Printable'
       printDebug(i);
       ^~~~~~~~~~
       Printable
*** [.pio/build/uno/src/main.cpp.o] Error 1

So I have always to create manually all functions prototypes on top of my code in this way:

void printDebug(byte i);

I have tried the new feature of C++ extension but it doesn't works well for this type of code.

The declaration is being placed in Arduino.h header file what is not correct for this case.

Thanks in advance.

Best regards.

[sean-mcmanus]

If Arduino.h does not exist in the current workspace, then it should be fixed in our next 1.15.0 release from #10402 .

Otherwise, there is no way to force it add the declaration to the current file, but you can add a #include "main.h" at the top of main.cpp to get it to add the declaration to main.h instead of another header.

[FernandoGarcia]

Hi!

Thanks for your reply!

The path to Arduino.h is /home/fernandogarcia/.platformio/packages/framework-arduino-avr/cores/arduino/Arduino.h and the path to my current workspace is: /home/fernandogarcia/Documentos/PlatformIO/Projects/General tests

I'll try including main.h.

Best regards.

[FernandoGarcia]

It doesn't worked.

[FernandoGarcia]

Saving the file or not the result is the same.

[sean-mcmanus]

You may be hitting a bug related to #10619 -- if you add

int iii;
int jjj;

to main.h, does that fix it? Otherwise, this might be some other bug we're not aware of yet, which might be fixed in 1.15.0 (since Arduino.h would be excluded), but I'm not sure.

[FernandoGarcia]

No adding this two variables doesn't solve the problem.

[sean-mcmanus]

Do the variables in main.h appear in the Outline view?

If not that would indicate the database is in a bad state. Either way, it might be worth running C/C++: Reset IntelliSense Database in case it is a database issue.

[FernandoGarcia]

I think it's outlined.

[FernandoGarcia]

Hi @sean-mcmanus !

I have installed the pre-release 1.15.0 and the problem remains.

Best regards.