From 9f477a61de7a6e1752311eecece59edbe002c9b0 Mon Sep 17 00:00:00 2001
From: Nigreon <nigreon@nigreon.info>
Date: Tue, 30 Dec 2025 22:33:22 +0100
Subject: [PATCH] Report on air DHT22 errors

---
 src/main.ino | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/src/main.ino b/src/main.ino
index fa3d21a..8248f4c 100644
--- a/src/main.ino
+++ b/src/main.ino
@@ -77,14 +77,19 @@ JsonDocument analyzeTH_type1(JsonArray payloadrh) {
 
 JsonDocument analyzeTH_type2(JsonArray payloadrh) {
   JsonDocument doc;
-  int16_t payloadtemp = payloadrh[2].as<unsigned char>();
-  payloadtemp += payloadrh[1].as<unsigned char>() << 8;
-  doc["temperature_C"] = payloadtemp / 100.0;
-  uint8_t payloadhumidity = payloadrh[3].as<unsigned char>();
-  doc["humidity"] = payloadhumidity;
+  uint8_t errcode = payloadrh[1].as<unsigned char>();
+  doc["errcode"] = errcode;
+  if(errcode == 0) {
+    int16_t payloadtemp = payloadrh[3].as<unsigned char>();
+    payloadtemp += payloadrh[2].as<unsigned char>() << 8;
+    doc["temperature_C"] = payloadtemp / 100.0;
+    uint8_t payloadhumidity = payloadrh[4].as<unsigned char>();
+    doc["humidity"] = payloadhumidity;
+  } 
   return doc;
 }
 
+
 void logJson(JsonDocument jsondata) {
   if(jsondata["model"].is<String>())
   {
@@ -107,11 +112,14 @@ void logJson(JsonDocument jsondata) {
           jsondata["battery_V"] = adoc["battery_V"];
           jsondata["battery_percent"] = adoc["battery_percent"];
           jsondata["temperature_C"] = adoc["temperature_C"];
-        } else if(jsondata["len"].as<int>() == 4  && ((payloadrh[0].as<unsigned char>() & 0b00100000 ) > 0)) {
+        } else if(jsondata["len"].as<int>() == 5  && ((payloadrh[0].as<unsigned char>() & 0b00100000 ) > 0)) {
           treatrh = true;
           JsonDocument adoc = analyzeTH_type2(payloadrh);
-          jsondata["temperature_C"] = adoc["temperature_C"];
-          jsondata["humidity"] = adoc["humidity"];
+          jsondata["errcode"] = adoc["errcode"];
+          if(jsondata["errcode"] == 0) {
+            jsondata["temperature_C"] = adoc["temperature_C"];
+            jsondata["humidity"] = adoc["humidity"];
+          }
         }
         if(treatrh == true) {
           jsondata.remove("from");