From 16b3cf764d3fcc5a115c80fbf656745b729ae954 Mon Sep 17 00:00:00 2001
From: MichaelDvP <59284019+MichaelDvP@users.noreply.github.com>
Date: Thu, 1 Jul 2021 09:34:34 +0200
Subject: [PATCH] don't count wrong tx-echos as rx-errors

---
 src/telegram.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/telegram.cpp b/src/telegram.cpp
index 1d5893b3a..23d7910f6 100644
--- a/src/telegram.cpp
+++ b/src/telegram.cpp
@@ -154,8 +154,12 @@ void RxService::add(uint8_t * data, uint8_t length) {
     // validate the CRC. if it fails then increment the number of corrupt/incomplete telegrams and only report to console/syslog
     uint8_t crc = calculate_crc(data, length - 1);
     if (data[length - 1] != crc) {
-        telegram_error_count_++;
-        LOG_ERROR(F("Rx: %s (CRC %02X != %02X)"), Helpers::data_to_hex(data, length).c_str(), data[length - 1], crc);
+        if ((data[0] & 0x7F) != ems_bus_id()) { // do not count echos as errors
+            telegram_error_count_++;
+            LOG_WARNING(F("Rx: %s (CRC %02X != %02X)"), Helpers::data_to_hex(data, length).c_str(), data[length - 1], crc);
+        } else {
+            LOG_TRACE(F("Rx: %s (CRC %02X != %02X)"), Helpers::data_to_hex(data, length).c_str(), data[length - 1], crc);
+        }
         return;
     }