[Partially solved] ISR from SoftwareSerial port

/dev:
That is nothing like what I suggested:

That's exactly what I did. Software port is declared only in NexHardware.cpp file.
String #define nexSerial Serial I added to test behavior of the hardware serial port.

Also wrote the sketch to check I/O data from software serial port.

#include <NeoSWSerial.h>

NeoSWSerial ss( 2, 3 );


void setup(void)
{
	Serial.begin(9600);
	ss.begin(9600);
	Serial.println("Ready!");
}

void loop(void)
{
	if (ss.available())
	{
		String data = ss.readString();
		Serial.println(data);
	}
	ss.print("t0.txt=");
	ss.write(0x22);
	ss.print("forum.arduino.cc");
	ss.write(0x22);
	ss.write(0xff);
	ss.write(0xff);
	ss.write(0xff);
}

Sending data works well. Pressing the touch screen variable data is filled, but I can not figure out what it was. But in the main program anyway not working display with NeoSWSerial. Maybe not enough space in the buffer?