some problem esp8266

[DCJona]

Hi,

i tried to test the sketche but here is the result :
Button 1 down
Buttons up
Button 1 down
Buttons up
Button 1 down
Buttons up
Button 1 down
Buttons up
Button 1 down
Buttons up
Button 1 down
Buttons up

always same ...
upload and wemosd1mini

do you have an idea?

thank you very much

regards,

jonathan

[Erriez]

Hi Jonathan,

Thanks for using my library.
Did you connect the keypad to the analog pin A0 of the Wemos d1 mini?
Is the keypad input voltage connected to 3.3V?

[DCJona]

Hello,
thanks for the answer, yes it's on the A0 and connected on 3.3v

[Erriez]

Can you enable some diagnostics by following the steps below?

1. Open the file src/ErriezRobotDynKeypad3x4Analog.cpp in a text editor and remove the comment on line 177:

// For debugging purposes
Serial.println(analogValue);

2. Run the example RobotDynKeypad3x4Analog on your board.
3. Press buttons 0..11 after each other.
4. Add the serial output in this comment.

I look forward to your output.

[DCJona]

i have a 4x4 keyboard but i tested with tjhe 3x4 before to modify it.
i have the following error :
collect2.exe: error: ld returned 1 exit status

[Erriez]

collect2.exe: error: ld returned 1 exit status

There is a compile error somewhere in your (modified?) library or sketch, but requires more details. To display the exact location of the build error, open Arduino IDE | File | Preferences | Show verbose output during: Check: compilation, rebuild and scroll up in the output window.

I've tested the code below with a RobotDyn Analog 4x4 Keypad and following boards:

• UNO = Mega2560
• NodeMCU 1.0 ESP-12E Module = Generic ESP8266 module = LOLIN(Wemos) D1 R2 mini
• LOLIN D32 (ESP32 with OLED)

Can you copy/paste the code below to a new Arduino sketch, run this on your board and let me know if it works? Then I can extend the library to support a 4x4 keypad when it works for you:

/*
 * MIT License
 *
 * Copyright (c) 2020 Erriez
 *
 * 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.
 */

#include <Arduino.h>

#if ARDUINO_ARCH_AVR
#define MAX_ANALOG_VALUE    1023
#elif ARDUINO_ARCH_ESP8266
#define MAX_ANALOG_VALUE    995
#elif ARDUINO_ARCH_ESP32
#define MAX_ANALOG_VALUE    4095
#else
#error "Unknown target"
#endif

class RobotDynKeypad4x4Analog
{
public:
    explicit RobotDynKeypad4x4Analog(uint8_t analogPin, uint16_t maxAnalogValue=MAX_ANALOG_VALUE);
    int getButtons();

protected:
    uint8_t  _analogPin;
    uint16_t _maxAnalogValue;
};

RobotDynKeypad4x4Analog::RobotDynKeypad4x4Analog(uint8_t analogPin, uint16_t maxAnalogValue) :
        _analogPin(analogPin), _maxAnalogValue(maxAnalogValue)
{

}

int RobotDynKeypad4x4Analog::getButtons()
{
    int analogValue;
    int button;

    analogValue = analogRead(_analogPin);

#if ARDUINO_ARCH_AVR
    analogValue = (int)map(analogValue, 0, _maxAnalogValue, 0, 1023);

    if (analogValue < 220) {
        button = -1;
    } else if (analogValue < 251) {
        button = 16;
    } else if (analogValue < 297) {
        button = 15;
    } else if (analogValue < 364) {
        button = 14;
    } else if (analogValue < 421) {
        button = 13;
    } else if (analogValue < 450) {
        button = 12;
    } else if (analogValue < 470) {
        button = 11;
    } else if (analogValue < 493) {
        button = 10;
    } else if (analogValue < 535) {
        button = 9;
    } else if (analogValue < 581) {
        button = 8;
    } else if (analogValue < 616) {
        button = 7;
    } else if (analogValue < 655) {
        button = 6;
    } else if (analogValue < 732) {
        button = 5;
    } else if (analogValue < 821) {
        button = 4;
    } else if (analogValue < 893) {
        button = 3;
    } else if (analogValue < 977) {
        button = 2;
    } else {
        button = 1;
    }
#elif ARDUINO_ARCH_ESP8266
    analogValue = (int)map(analogValue, 0, _maxAnalogValue, 0, 995);

    if (analogValue < 230) {
        button = -1;
    } else if (analogValue < 268) {
        button = 16;
    } else if (analogValue < 313) {
        button = 15;
    } else if (analogValue < 382) {
        button = 14;
    } else if (analogValue < 443) {
        button = 13;
    } else if (analogValue < 472) {
        button = 12;
    } else if (analogValue < 495) {
        button = 11;
    } else if (analogValue < 519) {
        button = 10;
    } else if (analogValue < 562) {
        button = 9;
    } else if (analogValue < 609) {
        button = 8;
    } else if (analogValue < 644) {
        button = 7;
    } else if (analogValue < 686) {
        button = 6;
    } else if (analogValue < 770) {
        button = 5;
    } else if (analogValue < 862) {
        button = 4;
    } else if (analogValue < 938) {
        button = 3;
    } else if (analogValue < 1003) {
        button = 2;
    } else {
        button = 1;
    }
#elif ARDUINO_ARCH_ESP32
    analogValue = (int)map(analogValue, 0, _maxAnalogValue, 0, 995);

    if (analogValue < 150) {
        button = -1;
    } else if (analogValue < 182) {
        button = 16;
    } else if (analogValue < 226) {
        button = 15;
    } else if (analogValue < 287) {
        button = 14;
    } else if (analogValue < 343) {
        button = 13;
    } else if (analogValue < 375) {
        button = 12;
    } else if (analogValue < 394) {
        button = 11;
    } else if (analogValue < 413) {
        button = 10;
    } else if (analogValue < 455) {
        button = 9;
    } else if (analogValue < 505) {
        button = 8;
    } else if (analogValue < 538) {
        button = 7;
    } else if (analogValue < 573) {
        button = 6;
    } else if (analogValue < 652) {
        button = 5;
    } else if (analogValue < 748) {
        button = 4;
    } else if (analogValue < 840) {
        button = 3;
    } else if (analogValue < 946) {
        button = 2;
    } else {
        button = 1;
    }
#else
#error "Unknown target"
#endif

    // For debugging purposes
    // Serial.println(analogValue);

    return button;
}

#define KEYPAD_ANALOG_PIN   A0

RobotDynKeypad4x4Analog keypad(KEYPAD_ANALOG_PIN);

// Initial keypad state
static int keypadStateLast = -2;


void setup() 
{
    // Initialize serial port
    Serial.begin(115200);
    Serial.println("\nErriez RobotDyn analog 4x4 keypad example\n");
}

void loop() 
{
    int keypadState;

    // Read buttons
    keypadState = keypad.getButtons();

    // Print button state only when it changed
    if (keypadState != keypadStateLast) {
        keypadStateLast = keypadState;

        if (keypadState == -1) {
            // -1: All buttons up
            Serial.println(F("Buttons up"));
        } else {
            // 0..15: Button down
            Serial.print(F("Button "));
            Serial.print(keypadState, DEC);
            Serial.println(F(" down"));
        }
    }

    delay(100);
}