// arduino uno pinout
// https://upload.wikimedia.org/wikipedia/commons/c/c9/Pinout_of_ARDUINO_Board_and_ATMega328PU.svg

// iom328p.h
// https://github.com/ElektorLabs/Arduinohttps://upload.wikimedia.org/wikipedia/commons/c/c9/Pinout_of_ARDUINO_Board_and_ATMega328PU.svg/blob/master/source2/avr/cores/arduino/avr/iom328p.h

#include <avr/interrupt.h>

//LOGIC trigger D7 on Arduino D12 --> PB4
#define TR_H PORTB|=(1<<PORTB4);
#define TR_L PORTB&=~(1<<PORTB4);

#define NOP __asm__ __volatile__ ("nop\n\t")

const int logiChanD0=6,logiChanD1=5,trigger=12;
void setup() {
  
  pinMode(logiChanD0, OUTPUT); // D0 on PD6
  pinMode(logiChanD1, OUTPUT); // D1 on PD5
  pinMode(trigger, OUTPUT);

// timing image:
// https://ibb.co/DGXnwHp
cli();
  TR_H

PORTD=0xFF;PORTD=0x00;
PORTD=0xFF;PORTD=0x00;
PORTD=0xFF;PORTD=0x00;
PORTD=0xFF;PORTD=0x00;

NOP;NOP;NOP;

PORTD=0xFF;NOP;PORTD=0x00;NOP;
PORTD=0xFF;NOP;PORTD=0x00;NOP;
PORTD=0xFF;NOP;PORTD=0x00;NOP;
PORTD=0xFF;NOP;PORTD=0x00;NOP;

  TR_L
sei();
}

void loop() {}