#ifndef PORTWRITE_PCA9655E_H
#define PORTWRITE_PCA9655E_H
#include <Arduino.h>
#include <inttypes.h>
#include <Wire.h>
#include <PortWriteInterface.h>
#include "PortIOE.h"

/* One PCA9655E I/O expander port connected to matrix rows.
PCA9655E does not have internal pull-up resistors (PCA9535E does).

begin() configures column port's configuration and output.
This should normally be called once in sketch's setup().
If PortRead_PCA9655E is instantiated on the same port, do NOT use PortWrite_PCA9655E::begin().
Otherwise readPins could be overwritten.

Instantiation
 ------------
Example instantiation for row port 0:
    PortIOE port0(0, 0);
    PortWrite_PCA9655E rowPort0(port0);

Example instantiation for row port 1:
    PortIOE port1(1, 0);
    PortWrite_PCA9655E rowPort1(port1);

Diode orientation
 ----------------
Diode orientation is explained in keybrd_library_user_guide.md > Diode orientation

PCA9655E data sheet
 ----------------
 http://www.onsemi.com/pub_link/Collateral/PCA9655E-D.PDF
*/

class PortWrite_PCA9655E : public PortWriteInterface
{
    private:
        PortIOE& port;
    public:
        PortWrite_PCA9655E(PortIOE& port) : port(port) {}
        void begin();

        virtual void write(const uint8_t pin, const bool level);
};
#endif