From 0047a346bcdda770dfa6bf6b52212c0c15e0a0a8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jakob=20L=C3=B6w?= <jakob@m4gnus.de>
Date: Tue, 15 Oct 2024 09:07:35 +0200
Subject: [PATCH] :sparkles: track pylon LV compatible inverter responses for
 checking if inverter is dead

---
 Software/src/inverter/PYLON-LV-CAN.cpp | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/Software/src/inverter/PYLON-LV-CAN.cpp b/Software/src/inverter/PYLON-LV-CAN.cpp
index 15efe829..401153b1 100644
--- a/Software/src/inverter/PYLON-LV-CAN.cpp
+++ b/Software/src/inverter/PYLON-LV-CAN.cpp
@@ -5,6 +5,7 @@
 
 /* Do not change code below unless you are sure what you are doing */
 
+static unsigned long previousInverterPacketMillis = 0;
 static unsigned long previousMillis1000ms = 0;
 
 CAN_frame PYLON_351 = {.FD = false,
@@ -120,8 +121,9 @@ void update_values_can_inverter() {
 void receive_can_inverter(CAN_frame rx_frame) {
   switch (rx_frame.ID) {
     case 0x305:  //Message originating from inverter.
-      // TODO: according to the spec, this message includes only 0-bytes
-      // we could however use this to check if the inverter is still alive
+      // according to the spec, this message includes only 0-bytes
+      datalayer.system.status.CAN_inverter_still_alive = true;
+      previousInverterPacketMillis = millis();
       break;
     default:
       break;
@@ -131,6 +133,10 @@ void receive_can_inverter(CAN_frame rx_frame) {
 void send_can_inverter() {
   unsigned long currentMillis = millis();
 
+  if(currentMillis - previousInverterPacketMillis >= 3000) {
+    datalayer.system.status.CAN_inverter_still_alive = false;
+  }
+
   if (currentMillis - previousMillis1000ms >= 1000) {
     previousMillis1000ms = currentMillis;