Adafruit Neopixels default argument error

Projects Programming
1

Code:

Adafruit_NeoPixel::Adafruit_NeoPixel  ( uint16_t  n = 24,
int16_t   p = 6,
neoPixelType  t = NEO_GRB + NEO_KHZ800 
); 
void setup() {
  // put your setup code here, to run once:
}
void Adafruit_NeoPixel::setPixelColor  ( uint16_t  n = 7,
uint8_t   r = 213,
uint8_t   g = 75,
uint8_t   b = 0
); 


void loop() {
  // put your main code here, to run repeatedly:
}  
void Adafruit_NeoPixel::setPixelColor  ( uint16_t  n = 9,
uint8_t   r = 23,
uint8_t   g = 207,
uint8_t   b = 150
);

Errors are for each "error: default argument given for parameter x" for all 4 parameters, how do I fix this?

2

Thanks for using code tags.

Please post the code in full.

Please post the error messages in full and in code tags.

3

Why are you respecifying the function prototypes?

Please copy and paste the exact error messages.

4

If you insist, this is seriously it.
Code:

Adafruit_NeoPixel::Adafruit_NeoPixel  ( uint16_t  n = 24,
int16_t   p = 6,
neoPixelType  t = NEO_GRB + NEO_KHZ800 
); 
void setup() {
  // put your setup code here, to run once:
}
void Adafruit_NeoPixel::setPixelColor  ( uint16_t  n = 7,
uint8_t   r = 213,
uint8_t   g = 75,
uint8_t   b = 0
); 


void loop() {
  // put your main code here, to run repeatedly:
}  
void Adafruit_NeoPixel::setPixelColor  ( uint16_t  n = 9,
uint8_t   r = 23,
uint8_t   g = 207,
uint8_t   b = 150

void Adafruit_NeoPixel::setPixelColor  ( uint16_t  n = 9,
uint8_t   r = 0,
uint8_t   g = 150,
uint8_t   b = 254
); ```

Error:
```Arduino: 1.8.19 (Windows Store 1.8.57.0) (Windows 10), Board: "Arduino Uno"





















Advanced_Neopixel:23:1: error: default argument given for parameter 1 of 'void Adafruit_NeoPixel::setPixelColor(uint16_t, uint8_t, uint8_t, uint8_t)'

 );

 ^

C:\Users\1100341545\Documents\Arduino\Light_start\Advanced_Neopixel\Advanced_Neopixel.ino:9:6: note: previous specification in 'void Adafruit_NeoPixel::setPixelColor(uint16_t, uint8_t, uint8_t, uint8_t)' here

 void Adafruit_NeoPixel::setPixelColor  ( uint16_t  n = 7,

      ^~~~~~~~~~~~~~~~~

Advanced_Neopixel:23:1: error: default argument given for parameter 2 of 'void Adafruit_NeoPixel::setPixelColor(uint16_t, uint8_t, uint8_t, uint8_t)'

 );

 ^

C:\Users\1100341545\Documents\Arduino\Light_start\Advanced_Neopixel\Advanced_Neopixel.ino:9:6: note: previous specification in 'void Adafruit_NeoPixel::setPixelColor(uint16_t, uint8_t, uint8_t, uint8_t)' here

 void Adafruit_NeoPixel::setPixelColor  ( uint16_t  n = 7,

      ^~~~~~~~~~~~~~~~~

Advanced_Neopixel:23:1: error: default argument given for parameter 3 of 'void Adafruit_NeoPixel::setPixelColor(uint16_t, uint8_t, uint8_t, uint8_t)'

 );

 ^

C:\Users\1100341545\Documents\Arduino\Light_start\Advanced_Neopixel\Advanced_Neopixel.ino:9:6: note: previous specification in 'void Adafruit_NeoPixel::setPixelColor(uint16_t, uint8_t, uint8_t, uint8_t)' here

 void Adafruit_NeoPixel::setPixelColor  ( uint16_t  n = 7,

      ^~~~~~~~~~~~~~~~~

Advanced_Neopixel:23:1: error: default argument given for parameter 4 of 'void Adafruit_NeoPixel::setPixelColor(uint16_t, uint8_t, uint8_t, uint8_t)'

 );

 ^

C:\Users\1100341545\Documents\Arduino\Light_start\Advanced_Neopixel\Advanced_Neopixel.ino:9:6: note: previous specification in 'void Adafruit_NeoPixel::setPixelColor(uint16_t, uint8_t, uint8_t, uint8_t)' here

 void Adafruit_NeoPixel::setPixelColor  ( uint16_t  n = 7,

      ^~~~~~~~~~~~~~~~~

exit status 1

default argument given for parameter 1 of 'void Adafruit_NeoPixel::setPixelColor(uint16_t, uint8_t, uint8_t, uint8_t)'



This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
5

Why is this in your code? What do you think it accomplishes?

6

Initializing the neopixels that will be connected to, I checked the class reference and am sure this is how it's done, the semicolons worked but I'm not entirely sure why.

7

You'd do well to study the examples that come with the library installation.

8

Find some example neopixel code. It won’t have anything like what you wrote. You don’t have to struggle and make stuff up by perusing the library code!

a7

9

It seriously isn't. Good luck with your project.

10

So what's the problem?

11

Your sketch includes the file:

Documents\Arduino\Light_start\Advanced_Neopixel\Advanced_Neopixel.ino

What is in that file?

Are there any other files in your sketch folder or subfolders?

12

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.