Add stepper motor driver L293D test code

src/main.cpp

@@ -0,0 +1,67 @@
+#include <Arduino.h>
+
+int motor1Pin1 = 27; 
+int motor1Pin2 = 26; 
+int enable1Pin = 14; 
+ 
+// Setting PWM properties
+const int freq = 30000;
+const int pwmChannel = 0;
+const int resolution = 8;
+int dutyCycle = 200;
+ 
+void setup() {
+  // sets the pins as outputs:
+  pinMode(motor1Pin1, OUTPUT);
+  pinMode(motor1Pin2, OUTPUT);
+  pinMode(enable1Pin, OUTPUT);
+  
+  // configure LED PWM functionalitites
+  ledcSetup(pwmChannel, freq, resolution);
+  
+  // attach the channel to the GPIO to be controlled
+  ledcAttachPin(enable1Pin, pwmChannel);
+ 
+  Serial.begin(9600);
+ 
+  // testing
+  Serial.print("Testing DC Motor...");
+}
+ 
+void loop() {
+  // Move the DC motor forward at maximum speed
+  Serial.println("Moving Forward");
+  digitalWrite(motor1Pin1, LOW);
+  digitalWrite(motor1Pin2, HIGH); 
+  delay(2000);
+ 
+  // Stop the DC motor
+  Serial.println("Motor stopped");
+  digitalWrite(motor1Pin1, LOW);
+  digitalWrite(motor1Pin2, LOW);
+  delay(1000);
+ 
+  // Move DC motor backwards at maximum speed
+  Serial.println("Moving Backwards");
+  digitalWrite(motor1Pin1, HIGH);
+  digitalWrite(motor1Pin2, LOW); 
+  delay(2000);
+ 
+  // Stop the DC motor
+  Serial.println("Motor stopped");
+  digitalWrite(motor1Pin1, LOW);
+  digitalWrite(motor1Pin2, LOW);
+  delay(1000);
+ 
+  // Move DC motor forward with increasing speed
+  digitalWrite(motor1Pin1, HIGH);
+  digitalWrite(motor1Pin2, LOW);
+  while (dutyCycle <= 255){
+    ledcWrite(pwmChannel, dutyCycle);   
+    Serial.print("Forward with duty cycle: ");
+    Serial.println(dutyCycle);
+    dutyCycle = dutyCycle + 5;
+    delay(500);
+  }
+  dutyCycle = 200;
+}