8 years, 3 months ago.

I keep getting the same error 289 in using Keypad.h

I'm trying to figure out why I keep getting this error when using Keypad.h. It says No instance of constructor "Keypad::Keypad matches the argument list "Keypad keypad(R0,R1,R2,R3,C0,C1,C2);"

Below is my code:

1. include "mbed.h"
2. include "Keypad.h"

DigitalOut R0 (PA_0); DigitalOut R1 (PA_1); DigitalOut R2 (PA_4); DigitalOut R3 (PB_0); DigitalIn C0 (PA_8); DigitalIn C1 (PB_10); DigitalIn C2 (PB_4);

char Keytable [12] = { C0, C1, C2 '1', '2', '3', R0 '4', '5', '6', R1 '7', '8', '9', R2 '*' ,'0', '#' R3 }; uint32_t Index;

uint32_t cbAfterInput(uint32_t index) { Index = index; return 0; }

int main() { R0 R1 R2 R3 C0 C1 C2 Keypad keypad(R0,R1,R2,R3,C0,C1,C2); keypad.attach(&cbAfterInput); keypad.start();

while (1) { wfi(); printf("Interrupted\r\n"); printf("Index:%d => Key:%c\r\n", Index, Keytable[Index]); } }

And this is the Keypad.h file if you need it:

/* mbed Keypad library, using user-defined interrupt callback

• Copyright (c) 2012 Yoong Hor Meng
• Permission is hereby granted, free of charge, to any person obtaining
• a copy of this software and associated documentation files (the
• "Software"), to deal in the Software without restriction, including
• without limitation the rights to use, copy, modify, merge, publish,
• distribute, sublicense, and/or sell copies of the Software, and to
• permit persons to whom the Software is furnished to do so, subject to
• the following conditions:
• The above copyright notice and this permission notice shall be included
• in all copies or substantial portions of the Software.
• THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
• OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
• MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
• IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
• CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
• TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
• SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE
• /

1. ifndef KEYPAD_H
2. define KEYPAD_H

1. include "mbed.h"
2. include "FPointer.h"

/**

• An interrupt-based interface to 4x4 keypad.
• On each key pressed on a keypad, the index of the key is passed to a
• user-defined function. User is free to define what to be done with the
• input.
• Example:
• @code
• #include "mbed.h"
• #include "Keypad.h"
• Define your own keypad values
• char Keytable[] = { '1', '2', '3', 'A', r0
• '4', '5', '6', 'B', r1
• '7', '8', '9', 'C', r2
• '*', '0', '#', 'D' r3
• };
• c0 c1 c2 c3
• uint32_t Index;
• uint32_t cbAfterInput(uint32_t index) {
• Index = index;
• return 0;
• }
• int main() {
• r0 r1 r2 r3 c0 c1 c2 c3
• Keypad keypad(p21, p22, p23, p24, p25, p26, p27, p28);
• keypad.attach(&cbAfterInput);
• keypad.start(); energize the keypad via c0-c3
• while (1) {
• wfi();
• printf("Interrupted\r\n");
• printf("Index:%d => Key:%c\r\n", Index, Keytable[Index]);
• }
• }
• @endcode
• /

class Keypad { public: / Create a 4x4 (row, col) or 4x3 keypad interface:

• | Col0 | Col1 | Col2 | Col3
• -++++-
• Row 0 | x | x | x | x
• Row 1 | x | x | x | x
• Row 2 | x | x | x | x
• Row 3 | x | x | x | x
• @param row<0..3> Row data lines
• @param col<0..3> Column data lines
• @param debounce_ms Debounce in ms (Default to 20ms)
• / Keypad(PinName r0, PinName r1, PinName r2, PinName r3, PinName c0, PinName c1, PinName c2, PinName c3, int debounce_ms = 20);

/ Destructor

• / Keypad();

/ Start the keypad interrupt routines

• / void start(void);

/ Stop the keypad interrupt routines

• / void stop(void);

/ User-defined function that to be called when a key is pressed

• @param fptr A function pointer takes a uint32_t and
• returns uint32_t
• / void attach(uint32_t (*fptr)(uint32_t));

protected: InterruptIn *_rows[4]; DigitalOut *_cols[3]; int _debounce; miliseconds int _nRow; int _nCol; FPointer _callback; Called after each input

void _checkIndex(int row, InterruptIn *therow); void _cbRow0Rise(void); void _cbRow1Rise(void); void _cbRow2Rise(void); void _cbRow3Rise(void); void _setupRiseTrigger(void); };

1. endif KEYPAD_H

I just can't figure out why this one error keeps happening.