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Richard-Gemmell / teensy4_i2c

An I2C library for the Teensy 4. Provides slave and master mode.
MIT License
92 stars 19 forks source link

Arduino compilation error #12

Closed pebo111 closed 3 years ago

pebo111 commented 3 years ago

Hi Richard To get to know your I2C driver I want to compile the program "find_slaves" and try it on my Teensy 4.0. But I always get the same error message

C:\Users\admin\AppData\Local\Temp\arduino_build_196192\libraries\i2c_driver_wire\i2c_driver_wire.cpp.o: In function I2CDriverWire::I2CDriverWire(I2CMaster&, I2CSlave&)': C:\Program Files (x86)\Arduino\hardware\teensy\avr\libraries\i2c_driver_wire/i2c_driver_wire.cpp:15: undefined reference toSlave' C:\Program Files (x86)\Arduino\hardware\teensy\avr\libraries\i2c_driver_wire/i2c_driver_wire.cpp:15: undefined reference to Master' C:\Program Files (x86)\Arduino\hardware\teensy\avr\libraries\i2c_driver_wire/i2c_driver_wire.cpp:15: undefined reference toSlave1' C:\Program Files (x86)\Arduino\hardware\teensy\avr\libraries\i2c_driver_wire/i2c_driver_wire.cpp:15: undefined reference to Slave2' C:\Program Files (x86)\Arduino\hardware\teensy\avr\libraries\i2c_driver_wire/i2c_driver_wire.cpp:15: undefined reference toMaster1' C:\Program Files (x86)\Arduino\hardware\teensy\avr\libraries\i2c_driver_wire/i2c_driver_wire.cpp:15: undefined reference to `Master2' collect2.exe: error: ld returned 1 exit status Bibliothek i2c_driver_wire im Ordner: C:\Program Files (x86)\Arduino\hardware\teensy\avr\libraries\i2c_driver_wire (legacy) wird verwendet Fehler beim Kompilieren für das Board Teensy 4.0.

What am I doing wrong? Arduino version 1.8.13 Teensyduino V1.53

With kind regards Peter

Richard-Gemmell commented 3 years ago

Hi Peter, I think this might be something to do with the way you installed the library. I installed it as a "custom library" using the instructions at this link: https://www.arduino.cc/en/Guide/Libraries#manual-installation

In my case my "Sketchbook location" directory is "C:\Users\Richard\Documents\Arduino\libraries" and I end up with the entire teensy4_i2c source tree in C:\Users\Richard\Documents\Arduino\libraries\teensy4_i2c. It looks like this: installation

Once I've done that I can restart Arduino and the examples appear at the bottom of the list in the "File | Examples" drop menu. I can then pick the find_slaves example from the menu like this:

pick_example

I can then compile that successfully and run it on my Teensy. I tested this with the same version of Arduino and Teensyduino that you're using.

I hope this helps. Richard

pebo111 commented 3 years ago

SUPER it works Some things are so simple. Thank you very much for the quick answer.

Many greetings Peter