Initial WIP

.gitignore

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+/.pio/
+/.idea/

platformio.ini

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+[env:KnxEsp]
+platform = espressif32
+board = esp32dev
+framework = arduino
+lib_deps = https://github.com/thorsten-gehrig/arduino-tpuart-knx-user-forum

src/Group.h

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+#ifndef GROUP_H
+#define GROUP_H
+
+class Group {
+
+public:
+
+  uint8_t main = 0;
+
+  uint8_t mid = 0;
+
+  uint8_t sub = 0;
+
+  uint8_t dpt = 0;
+
+  static Group groups[500];
+
+  static void write(uint8_t main, uint8_t mid, uint8_t sub) {
+    for (auto group: groups) {
+      if (group.main == main && group.mid == mid && group.sub == sub) {
+        group.
+      }
+    }
+  }
+
+};
+
+#endif

src/main.cpp

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+#include <Arduino.h>
+
+#include <KnxTpUart.h>
+
+#include "Group.h"
+
+KnxTpUart knx(&Serial1, "15.15.20");
+
+void knxSetup();
+
+void knxLoop();
+
+void setup() {
+  Serial.begin(112500);
+  delay(500);
+  Serial.print("\n\n\nStartup\n");
+  knxSetup();
+}
+
+void loop() {
+  knxLoop();
+}
+
+void knxSetup() {
+  Serial1.begin(19200, SERIAL_8E1);
+  knx.uartReset();
+  knx.setListenToBroadcasts(true);
+}
+
+void knxLoop() {
+  auto type = knx.serialEvent();
+  if (type != KNX_TELEGRAM) {
+    return;
+  }
+  KnxTelegram *telegram = knx.getReceivedTelegram();
+  Group::write(telegram->getTargetMainGroup(), telegram->getTargetMiddleGroup(), telegram->getTargetSubGroup(),telegram->getPayloadLength());
+  Serial.printf("%d/%d/%d\n", telegram->getTargetMainGroup(), telegram->getTargetMiddleGroup(), telegram->getTargetSubGroup());
+}