startracker

main.ccp

#include <Arduino.h>

#define DIR_PIN 39
#define STEP_PIN 37
//#define ENABLE_PIN 35
#define MICROSTEPPING 32

double revsPerSec = .01;
int timingUs = ((1000000 / revsPerSec) / (200 * MICROSTEPPING)) / 2;

void setup() {
  pinMode(DIR_PIN, OUTPUT);
  pinMode(STEP_PIN, OUTPUT);
  pinMode(LED_BUILTIN, OUTPUT);

  Serial.begin(9600);
}

void loop() {
  digitalWrite(STEP_PIN, HIGH);
  digitalWrite(LED_BUILTIN, HIGH);
  delayMicroseconds(timingUs);
  digitalWrite(STEP_PIN, LOW);
  digitalWrite(LED_BUILTIN, LOW);
  delayMicroseconds(timingUs);

  if (Serial.available()) {
    revsPerSec = Serial.parseFloat();
    Serial.println(revsPerSec, 4);
    timingUs = ((1000000 / revsPerSec) / (200 * MICROSTEPPING)) / 2;
    Serial.println(timingUs);
    Serial.println(1000000 / revsPerSec);
    Serial.println();
  }
}