diff --git a/.gitignore b/.gitignore
index 4e7bf47..7361770 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,4 @@
 build/
 .cache
+alox.protogen
+.vscode/
diff --git a/Makefile b/Makefile
index 21899ac..ec1d45b 100644
--- a/Makefile
+++ b/Makefile
@@ -4,6 +4,16 @@ all:
 export:
 	source ~/esp/esp-idf/export.fish && fish
 
+get_code_gen:
+	wget git.aloxdrim.de/skruecken/protgen/actions/runs/latest/artifacts/alox.protogen -O alox.protogen.zip
+	unzip -o alox.protogen.zip
+	rm alox.protogen.zip
+	chmod +x alox.protogen
+
+gen_prot:
+	./alox.protogen -i prot.json -o main/uart
+
+
 buildIdf:
 	idf.py build 
 
diff --git a/main/.gitignore b/main/.gitignore
new file mode 100644
index 0000000..d3baa75
--- /dev/null
+++ b/main/.gitignore
@@ -0,0 +1,2 @@
+uart_prot.c
+uart_prot.h
diff --git a/main/CMakeLists.txt b/main/CMakeLists.txt
index 3b5ef82..9d84066 100644
--- a/main/CMakeLists.txt
+++ b/main/CMakeLists.txt
@@ -1,3 +1,3 @@
-idf_component_register(SRCS "main.c" "uart_handler.c" "communication_handler.c"
+idf_component_register(SRCS "main.c" "uart_handler.c" "communication_handler.c" "uart_prot.c"
                        INCLUDE_DIRS ".")
 
diff --git a/prot.json b/prot.json
new file mode 100644
index 0000000..f2e1136
--- /dev/null
+++ b/prot.json
@@ -0,0 +1,61 @@
+{
+  "protocol": {
+    "start_byte": "0xAA",
+    "message_length": 0,
+    "max_payload": 255,
+    "checksum": "xor"
+  },
+  "messages_esp_to_pc": [
+    {
+      "name": "Clients",
+      "id": "0xE1",
+      "payload": [
+        { "name": "clientCount", "type": "uint8_t" },
+        { "name": "clientAvaiableBitMask", "type": "uint32_t" }
+      ]
+    },
+    {
+      "name": "Status",
+      "id": "0xE2",
+      "payload": [
+        { "name": "clientId", "type": "uint8_t" },
+        { "name": "mac", "type": "uint8_t", "array": 6 }
+      ]
+    },
+    {
+      "name": "Pong",
+      "id": "0xD1",
+      "payload": [
+        { "name": "clientId", "type": "uint8_t" },
+        { "name": "ping", "type": "uint32_t" }
+      ]
+    }
+  ],
+  "messages_pc_to_esp": [
+    {
+      "name": "RequestPing",
+      "id": "0xE1",
+      "payload": [
+        { "name": "clientId", "type": "uint8_t" }
+      ]
+    },
+    {
+      "name": "RequestStatus",
+      "id": "0xE2",
+      "payload": [
+        { "name": "clientId", "type": "uint8_t" }
+      ]
+    },
+    {
+      "name": "PrepareFirmwareUpdate",
+      "id": "0xF1"
+    },
+    {
+      "name": "FirmwareUpdateLine",
+      "id": "0xF2",
+      "payload": [
+        { "name": "data", "type": "uint8_t", "array": 240 }
+      ]
+    }
+  ]
+}
diff --git a/readme.md b/readme.md
index 11a4485..17256a7 100644
--- a/readme.md
+++ b/readme.md
@@ -23,6 +23,27 @@
 - **Checksum** (`uint8_t`):  
   XOR über alle Bytes ab `Length` bis einschließlich `Payload`.  
 
+### Nachrichten von PC zu ESP:
+
+clientid: 0x00 für master, 0xFF für broadcast, ansonsten 0xA0-0xB3 // 19 Clients
+
+### RequestPing 0xE1
+Payload: byte: clientid
+### RequestInfo 0xE2
+Payload: byte: clientid
+### RequestRestart 0xE3
+Payload: byte: clientid
+### PrepareFirmwareUpdate 0xF1
+Payload: none 
+### FirmwareUpdateLine 0xF2
+Payload: firmware line 240Bytes MAX 
+### ExecuteFirmwareUpdate 0xF3
+Payload: none 
+
+### Nachrichten von ESP zu PC:
+
+
+
 ---
 
 # Roadmap