From 1a57a8bd9be465f0807e76f51759980600e0350b Mon Sep 17 00:00:00 2001
From: Pim van den Berg <pim@nethuis.nl>
Date: Sun, 15 Nov 2020 14:59:57 +0100
Subject: [PATCH] feat(itho-wpu): implement getserial action

---
 itho-wpu.py | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/itho-wpu.py b/itho-wpu.py
index 1e6049b..2cedef8 100755
--- a/itho-wpu.py
+++ b/itho-wpu.py
@@ -177,6 +177,8 @@ def process_response(action, response, args):
             export_to_influxdb(action, measurements)
     elif action == "getnodeid":
         process_nodeid(response)
+    elif action == "getserial":
+        process_serial(response)
 
 
 def process_nodeid(response):
@@ -199,6 +201,14 @@ def process_nodeid(response):
                 f"ListVersion: {listversion}")
 
 
+def process_serial(response):
+    if int(response[1], 0) != 0x90 and int(response[2], 0) != 0xE1:
+        logger.error(f"Response MessageClass != 0x90 0xE1 (getserial), but {response[1]} {response[2]}")
+        return
+    serial = (int(response[5], 0) << 16) + (int(response[6], 0) << 8) + int(response[7], 0)
+    logger.info(f"Serial: {serial}")
+
+
 def process_datalog(response):
     if int(response[1], 0) != 0xA4 and int(response[2], 0) != 0x01:
         logger.error(f"Response MessageClass != 0xA4 0x01 (getdatalog), but {response[1]} {response[2]}")