showNumber - call of overloaded 'showNumber(double, bool, int, int)' is ambiguous

[playrobotics-alex]

Hi,

Thank you so much for this library! I am trying to display 2 decimal numbers , one on the left side of the screen and one on the right side. This works perfectly: display1.showNumber(160, false, 3, 0);
display1.showNumber(111, false, 3, 3);
But this is giving me an error: display1.showNumber(1.60, false, 3, 0);
display1.showNumber(1.11, false, 3, 3);

call of overloaded 'showNumber(double, bool, int, int)' is ambiguous

Can you please point me in the right direction?

thanks!

[playrobotics-alex]

After some more testing I was able to make it partly work using: display1.showNumber(2.34, 2, 3, 0); display1.showNumber(6.78, 2, 3, 3);

The problem is the left part of the screen is showing 2.34 but the right part of the screen 678 (without decimal point)

[jasonacox]

Hi @playrobotics-alex thanks for the finding. This could be a bug rendering the decimal for a non-zero position. I'll take a look.

If you just send the second one, by itself, does it work?

display1.showNumber(6.78, 2, 3, 3);

In the meantime, here a possible workaround:

// assume value is < 10 and want format 0.00
double x = 2.34;
double y = 6.78;

// convert two floating point numbers to integers
int first = (int)(x*100);
int second = (int)(y*100);

// convert two numbers into a single number
long num = (first * 1000) + second;

//   void showNumberDec(long num, uint8_t dots = 0, bool leading_zero = false, 
//                 uint8_t length = MAXDIGITS, uint8_t pos = 0);
showNumberDec(num, 0b01010000, true);

[playrobotics-alex]

Thank you for the reply, and the workaround! The problem is I don't know both numbers at the same time, those are basically two separate timers that are stopped independently. The solution I ended up using was, converting the numbers to an array of chars and adding the decimal points manually: display.showString(char_array, 3, 3, 0b10000000); display.showString(char_array, 3, 0, 0b10000000);

[jasonacox]

Thanks for the update and I'm glad you found a workaround. I'll see if I can fix the underlying bug as your first approach should have worked:

display1.showNumber(2.34, 2, 3, 0);
display1.showNumber(6.78, 2, 3, 3);

[jasonacox]

I found the bug! There was a position offset in the decimal calculation that should not have been there. This impacts both the TM1637TinyDisplay and TM1637TinyDisplay6 (4 and 6-digit) classes. I will submit the fix as v1.4.4. Thanks for the help!

// Test run for two floating point numbers

TM1637TinyDisplay6 display(CLK, DIO);

float x = 9.99;
float y = 0.0;

void setup()
{
  display.setBrightness(BRIGHT_HIGH);
  display.clear();
}

void loop()
{
  // showNumber(num, decimal_length, length, pos)
  display.showNumber(x, 2, 3, 0);
  display.showNumber(y, 2, 3, 3);

  // move values
  x = x - 0.01;
  y = y + 0.01;
  delay(10);
}

[playrobotics-alex]

Great job :-) Thank you!

[jasonacox]

Closing this issue. Please re-open if there is anything else we need to address.