improved pin use, added comments

src/main.cpp

@@ -1,13 +1,24 @@
-#include <ParallelPrinter.h>
-#include <WiFi.h>
-#include <WebServer.h>
-
-WiFiServer server(21);
-WiFiClient client;
+#include <ParallelPrinter.h> // https://github.com/RobTillaart/ParallelPrinter
+#include <WiFi.h> // https://docs.platformio.org/en/latest/boards/espressif32/az-delivery-devkit-v4.html
 
 #define wifi_ssid "dezentrale-2.4"
 #define wifi_password "dezentrale"
 
+#define STROBE 15
+#define BUSY 17
+#define OOP 18
+
+#define D0 21
+#define D1 22
+#define D2 23
+#define D3 25
+#define D4 26
+#define D5 27
+#define D6 32
+#define D7 33
+
+WiFiServer server(21);
+WiFiClient client;
 ParallelPrinter PP;
 
 bool wifi_connect()
@@ -55,7 +66,17 @@ void setup()
   Serial.println();
   Serial.println();
 
-  PP.begin(); // create connection to printer
+
+  uint8_t datapins[] = { D0, D1, D2, D3, D4, D5, D6, D7 };
+  // create connection to printer
+  PP = ParallelPrinter(STROBE, BUSY, OOP, datapins); // uses default pins
+  PP.begin(80,255);
+ // uint8_t datapins[] = { D0, D1, D2, D3, D4, D5, D6, D7 };
+  // create connection to printer
+ // PP = new ParallelPrinter(STROBE, BUSY, OOP, datapins); // uses default pins
+  // strobe 13; busy 2; oop 12; data pins from 3 to 10
+  PP.println("Drucker wurde erfolgreich gestartet.");
+  PP.println("Warte auf Anweisungen...");
 }
 
 bool clientAuthorized = false;