Added high command and low command

Added `high` command - usage `high <pin-number>` (sets pin inputted to high)
Added `low` command - usage `low <pin-number>` (sets pin inputted to low)

GrainOS.ino

@@ -58,17 +58,20 @@ void deleteFile(String name) {
 
 void showHelp() { //I think this is fairly self explanatory, but still, making sure. It's just the guts of the `help` command
     Serial.println("Available commands:");
-    Serial.println("  clear - Clears the screen");
-    Serial.println("  echo <message> - Prints the message");
-    Serial.println("  format(\"text,text,text\") - Formats input");
-    Serial.println("  write <filename> <content> - Writes content to a file");
-    Serial.println("  read <filename> - Reads and prints the content of a file");
-    Serial.println("  delete <filename> - Deletes a file");
-    Serial.println("  ls - Lists all files");
-    Serial.println("  help - Displays this help message");
-    Serial.println("  calc <number> <operator> <number> - calculates command");
-    Serial.println("  run <script.gs> - Runs a script file");
-    Serial.println("  loop <number> <command> - Loops a command the inputted amout of times");
+    Serial.println("  clear - Clears the screen"); //1
+    Serial.println("  echo <message> - Prints the message"); // 2
+    Serial.println("  format(\"text,text,text\") - Formats input"); // 3
+    Serial.println("  write <filename> <content> - Writes content to a file"); // 4
+    Serial.println("  read <filename> - Reads and prints the content of a file"); // 5
+    Serial.println("  delete <filename> - Deletes a file"); // 6
+    Serial.println("  ls - Lists all files"); // 7
+    Serial.println("  help - Displays this help message"); // 8
+    Serial.println("  calc <number> <operator> <number> - calculates command"); // 9
+    Serial.println("  run <script.gs> - Runs a script file"); // 10
+    Serial.println("  loop <number> <command> - Loops a command the inputted amount of times"); // 11
+    Serial.println("  high <pin-number> - sets the inputted pin to high");// 12
+    Serial.println("  low <pin-number> - sets the inputted pin to low"); //13
+
 }
 
 void calculate(String input) {
@@ -174,7 +177,29 @@ void loopCommand(String input) {
     }
 }
 
+void setPinLow(String input) {
+    int pin = input.toInt();
+    if (pin >= 0) {
+        pinMode(pin, OUTPUT);
+        digitalWrite(pin, LOW);
+        Serial.println("Pin " + String(pin) + " set to LOW");
+    } else {
+        Serial.println("Invalid pin number");
+    }
+}
 
+void setPinHigh(String input) {
+  int pin = input.toInt();
+  if (pin >= 0){
+    pinMode(pin, OUTPUT);
+    digitalWrite(pin, HIGH);
+    Serial.println("Pin" + String(pin) + " set to LOW");
+
+  } else {
+    Serial.println("Invalid pin number");
+  }
+
+}
 
 
 
@@ -230,6 +255,12 @@ void processCommand(String input) {
     else if (input.startsWith("loop ")) {
         loopCommand(input.substring(5));
     }
+    else if (input.startsWith("high ")) {
+      setPinHigh(input.substring(5));
+    }
+    else if (input.startsWith("low ")){
+      setPinLow(input.substring(4));
+    }
     else {
         Serial.println("Unknown command " + input + ", for a list of commands type 'help'"); //changed this because I realized It makes more sense
     }