EC11 Rotary Encoder on MCP23017 (pro micro) [different Pin Connection than example]

[nullscm]

Hi :)

I know that you have an example for RotEncoders connected to a MCP but my pin configuration is a bit different so it's not working for me sadly.
The 5 Encoders are connected with

ButtonEnc1 - 0
Enc1Turn - 1
Enc1Turn - 2 

ButtonEnc1 - 3
Enc1Turn - 4
Enc1Turn - 5 
...

already tried to configure them manually but it's not working:

#include <Control_Surface.h> // Include the Control Surface library
#include <Wire.h>
#include <AH/Hardware/ExtendedInputOutput/MCP23017.hpp>
#include <Arduino_Helpers.h>
using namespace ExtIO; // Use the extended input/output functions
using WireType = decltype(Wire); // The type of the I²C driver to use

USBDebugMIDI_Interface midi = 115200;

MCP23017<WireType> mcp {
  Wire, // The I²C driver to use
    0x21, // The I²C address offset (depends on the state of the address pins)
    1, // Optional: interrupt pin to detect input changes
};

CCRotaryEncoder enc {
  {mcp.pinA(1), mcp.pinA(2)}, // pins
    MCU::V_POT_1, // MIDI address (CC number + optional channel)
    1, // optional multiplier if the control isn't fast enough
};

void setup() {
  Wire.begin(); // Initialize the I²C interface
  Wire.setClock(800000); // Faster I²C clock
  mcp.begin(); // Initialize the MCP23017
  RelativeCCSender::setMode(relativeCCmode::MACKIE_CONTROL_RELATIVE);
  Control_Surface.begin(); // Initialize Control Surface
}

void loop() {
  Control_Surface.loop(); 
}

[tttapa]

Unfortunately, you cannot use the ExtIO elements like the MCP23017 with encoders. This is deliberate: doing so would be too slow. I'd highly recommend connecting the encoders to the Arduino pins directly, preferably using interrupt-capable pins.

[nullscm]

Sadly that's not possible. But you already have an example for the MCP with 8 encoders, maybe you can hint me how to edit the class to use my pin configuration?

[tttapa]

It's probably easiest to use the MCP23017 class, and then read the encoder pins manually using digitalReadBuffered(). Once you have the state of all encoder pins, you can pass it to RegistersEncoders::update(). You can find some inspiration in https://tttapa.github.io/Control-Surface-doc/Doxygen/d6/dd2/Pin-Change-Interrupt-Encoders_8ino-example.html.

[nullscm]

alright thank you :)

[nullscm]

e.g. skipping pin 0,3,6,9,12,15 (the Button pins)