Touch GFX #4. Send data to UI || Sampling from another task || Gauge || Animation 

In the modelListerner.hpp file, remove the keyword “virtual” from line 11.

@@ControllersTech thank you for so fast reply! I have deleted virtual from destructor, but it did not help. This is the code now (to be able to count line number): #ifndef MODELLISTENER_HPP #define MODELLISTENER_HPP #include class ModelListener { public: ModelListener() : model(0) {} ~ModelListener() {} void bind(Model* m) { model = m; } virtual void Set_data_variable(unsigned char data_variable); protected: Model* model; }; #endif // MODELLISTENER_HPP

@alexanderkvashin ok don’t delete it from line 11. Put it back there. The function set_data_variable…. Delete the virtual from there.

@@ControllersTech I put it back and deleted virtual from function set_data_variable, now I got linker error pointing on Model.c where I issue it: ../TouchGFX/gui/src/model/Model.cpp:20: undefined reference to `ModelListener::Set_data_variable(unsigned char)'

Define like this void Set_data_variable (unsigned char data_variable) {}

Connect output pin from potentiometer to the adc pin. Regarding max voltage, it depends on the VRef. Check your MCUs datasheet.

Yes

Download the code from the link in the description. Then look into the assets folder.

@@ControllersTech Thank you! I found it now. For anyone else that might need this, the assests is inside TouchGFX folder.