two i2c bus configuration/declaration

Hi Renzo, Please provide option to choose software wire i2c bus in your declaration, just like option in case of ESP32 i.e. PCF8574 pcf8574(&I2Cone, 0x38);

Similar declaration option is required for esp8266, if viable using any suitable software wire bus, preferably slow software i2c library https://github.com/felias-fogg/SlowSoftWire on ESP-12E

(ESP8266). sample code:-

#include “Arduino.h”
#include “PCF8574.h”

#include <SlowSoftWire.h>
SlowSoftWire Wire1 = SlowSoftWire(4,5);
SlowSoftWire Wire2 = SlowSoftWire(6,7);

PCF8574 PCFone(&Wire1, 0x38);
PCF8574 PCFtwo(&Wire1,0x3E);