Keypad example dosen't work

Questions » Keypad example dosen't work

Keypad.cpp example dosen't work. I am use Keypad.h librarie but the program dosen't compile.

This is the error:

Compiler Error L6218E Undefined symbol Keypad::start() (referred from ../../build/main.NUCLEO_F429ZI.o).

The program I am use is:

Public Member Functions
	Keypad (PinName r0, PinName r1, PinName r2, PinName r3, PinName c0, PinName c1, PinName c2, PinName c3, int debounce_ms=20)
	Create a 4x4 (row, col) or 4x3 keypad interface:
	~Keypad ()
	Destructor.
void	start (void)
	Start the keypad interrupt routines.
void	stop (void)
	Stop the keypad interrupt routines.
void	attach (uint32_t(*fptr)(uint32_t))
	User-defined function that to be called when a key is pressed.

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Asked 5 years, 3 months ago.

Updated 5 years, 3 months

Public Member Functions