C/C++ Question BigNumbers Library need help

[rwblinn]

Hi,

wrapping this library. rBigNumbers compiles without error, but when using

bn.Initialize(lcdbn)

receiving error
"can not cast type:{type=liquidcrystal_i2c,rank=0,remoteobject=true} to: {type=liquidcrystal_i2c,rank=0,remoteobject=true}"

Seems that doing following in rBigNumbers.h & cpp is not correct:

void Initialize(LiquidCrystal_I2C* lcd);

void B4RBigNumbers_I2C::Initialize(LiquidCrystal_I2C* lcd) {
  bn = new (be) BigNumbers(&lcd);
  bn->begin();
}

Any help appreciated?

Libary & Example code attached.

 

[Erel]

The type of lcd is B4RLiquidCrystal_I2C*.

You can modify the rLiquidCrystal_I2C library and make lcd a public variable. Change your library code to accept a B4RLiquidCrystal_I2C* and get the native object with
lcd->lcd

 

[rwblinn]

Thats it - need to polish the library up and will share rBigNumbers_I2C in the B4R Libraries.

Thanks for your help.

 

[Alpandino]

Hi rwblinn, I'd need to view your rBigNumbers_I2C to understand how you resolved the issue. When can I find it?

Thank you

 

[rwblinn]

...need to view your rBigNumbers_I2C to understand how you resolved the issue. When can I find it?

Please find attached the library rBigNumbers_I2C and modified rLiquidCrystal_I2C.

Can not recall if I have made an example as haven't been using B4R for a while ... think I went to a non I2C solution at that time (see next).

May be of interest, is a non I2C example for a LCD1602 to display big numbers (b4rhowtolcdbignumbers.zip).

 

[Alpandino]

Hi rwblinn, thank you a lot.
Now what should I do to pass an array of lcd?
I tried

void Initialize(ArrayB4RLiquidCrystal_I2C* lcd);

an a many other things, but doesn't work, I receive different errors.
Is it possible to pass in a method an array of a non-trivial type?
I mean, I'm able to pass an array of Byte, an array of Int, and so on. But I can't pass an array of a type like lcd or AdafruitNeoPixel.

Bye and thank

 

[rwblinn]

Hi,

afraid can not help further.

Suggestion

• create a new thread under B4R library questions related to wrapping the C library (you build)
  
• share the B4R library code (and the C library with preferrable some examples) developed so far.

May be someone else can help based on that information.

Be aware that there is a AdafruitNeoPixel library.