I have a probelm with an error named redefinition of void setup

Projects Programming
1

I was testing a code for the ultrasonic sensor for the uno rev3 example and this is the third time but the past two worked What am I doing wrong?``

Arduino:1.8.19 (Windows Store 1.8.57.0) (Windows 10), Scheda:"Arduino Uno"

C:\Users\ironm\OneDrive\Desktop\coding\Elegoo\Italiano\code\Lesson 10 Ultrasonic Sensor Module\SR04_Example\SR04_Example.ino: In function 'void setup()':

SR04_Example:25:6: error: redefinition of 'void setup()'

void setup()

  ^~~~~

C:\Users\ironm\OneDrive\Desktop\coding\Elegoo\Italiano\code\Lesson 10 Ultrasonic Sensor Module\SR04_Example\SR04_Example.ino:8:6: note: 'void setup()' previously defined here

void setup() {

  ^~~~~

C:\Users\ironm\OneDrive\Desktop\coding\Elegoo\Italiano\code\Lesson 10 Ultrasonic Sensor Module\SR04_Example\SR04_Example.ino: In function 'void loop()':

SR04_Example:32:6: error: redefinition of 'void loop()'

void loop()

  ^~~~

C:\Users\ironm\OneDrive\Desktop\coding\Elegoo\Italiano\code\Lesson 10 Ultrasonic Sensor Module\SR04_Example\SR04_Example.ino:13:6: note: 'void loop()' previously defined here

void loop() {

  ^~~~

exit status 1

redefinition of 'void setup()'

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in "File -> Impostazioni"

2

The code you posted, in code tags, indicates the error is on line 1043523445487773.

1 Like
3

So you have a definition of the setup() function starting at line 25 of your sketch.

But that is not allowed because you also have a definition of that function starting at line 8:

You can only have one setup function in your sketch.

As for the fix, we will need to see your sketch in order to provide guidance. Please post your full sketch.

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4

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