Two-dimension stepper control with potentiometers

[johnerrington]

@beepboopbob

void write_Xpulse_low(void){
    digitalWrite(XDRIVER_STEP_PIN, LOW);
    Xtime_now = micros();
 
    if(!Xidle_flag){
        Xdriver_pulse_state = XPULSE_LOW;
    }
    else{
        Xdriver_pulse_state = XPULSE_IDLE;
    }

no closing brace