Cant handle multiple dm542t drivers at the same time

[beardedphobos]

Hi, I am facing a strange issue, I have 2 dm542t drivers connected to the arduino giga, but I am not able to control them in the same time. Kinda. I wrote a simple cartesian coordinate stepper class, I am able to control the movement on 2 axes at the same time until the direction is not high for both drivers in the same time, so relative movement like the following work:

• -500,-500

• 500,-500

• -500,500

As soon as I hit something where both of the directions are HIGH, so for example (500,500), nothing works. As soon as I have four outputs high it is not working, to make sure that the code is not the issue I have tried to hardcode these steps in the loop, I tried to use outputs which are not on the same, or on the same port, and I got the same result. Other then the 2 driver I have 4 limit switches connected to the arduino. Have anybody faced an issue like this, I am just lost now.

To test out everything I wrote this test code, and removed the belts and limit switches so I can check on the movement freely.

int count = 0;

void setup()
{
  pinMode(23,OUTPUT);
  pinMode(24,OUTPUT);
  pinMode(26,OUTPUT);
  pinMode(27,OUTPUT);
}

void loop()
{
  if(count == 0)
  {
    // works
    // digitalWrite(24,LOW);
    // digitalWrite(27,LOW);

    // works
    // digitalWrite(24,LOW);
    // digitalWrite(27,HIGH);

    //works
    // digitalWrite(24,HIGH);
    // digitalWrite(27,LOW);

    // not working
     digitalWrite(24,HIGH);
    digitalWrite(27,HIGH);
    // docs specify min 5us direction setup time
    delayMicroseconds(6);
  }
  if(count < 50)
  {
    digitalWrite(23,HIGH);
    // docs specify at least 2.5 us pulse width
    delayMicroseconds(4);
    digitalWrite(23,LOW);
    digitalWrite(26,HIGH);
    // docs specify at least 2.5 us pulse width
    delayMicroseconds(4);
    digitalWrite(26,LOW);
  }
  count++;
  delay(50);
}

Diagram:

[b707]

The code is a very weird.
Your count value quickly increased above 50 and the code stops working. There is nothing in the sketch that could reverse the incontrolable increasing of count variable.

[beardedphobos]

that is ok, I wanted to see if the 50 steps are done in any direction, and the steppers should run 50 steps in this code (this was just a test code there was no intention for direction change, or infinite stepping), which they do, but none of them is running if the direction is HIGH for both drivers.

Edit: between each step is a 50ms delay so 50steps are running for 2.5sec.

Edit: I commented out the code which I compiled and uploaded separately to the arduino, thats how I tried running different directions.