ESP32 Course – Hall effect sketch – 'hallRead' was not declared

Q&A Forum › Category: ESP32 › ESP32 Course – Hall effect sketch – 'hallRead' was not declared

gaetan.angely asked 6 years ago

Compiling the Hall effect sketch halts on this error:
‘hallRead’ was not declared in this scope
My board is a NodeMCU-32-S and compiling the other sketches (up to Module 2 Unit 4) is OK.

5 Answers

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Rui Santos Staff answered 6 years ago

Hello, are you using this exact sketch?

https://raw.githubusercontent.com/RuiSantosdotme/ESP32-Course/master/code/Hall_Effect_Sensor/Hall_Effect_Sensor.ino

Which board do you have selected in the Arduino IDE? I’ve just tried to compile it for NodeMCU32-S board and it works fine on my installation.

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gaetan.angely answered 6 years ago

Thank you for your answer.
It is the same sketch, with “Serial.begin(115200);” and the selected board is “NodeMCU32-S”, but something must be wrong in ~/.arduino15: I just checked on another machine, and compiling here is fine.
Sorry to have send this mail too quickly.

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Rui Santos Staff answered 6 years ago

Not sure what’s happening then, you might want to delete that installation and re-install the ESP32 add-on. It should find that function in any selected board.

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gaetan.angely answered 6 years ago

I have re-installed ‘esp32 by Espressif Systems‘ boards definitions and it’s working now.
Thank you for your advice, I will proceed with the course 🙂

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Rui Santos Staff answered 6 years ago

I’m glad it worked! I’ll mark this thread as “Resolved”.