From 8a1df52d79ec19328e05e69dbb54caff1e9d843f Mon Sep 17 00:00:00 2001
From: "D.R.racer" <drracer@drracer.eu>
Date: Mon, 26 Jul 2021 08:45:27 +0200
Subject: [PATCH] Add support for reporting MMU errors via S3 msg

---
 src/main.cpp            | 5 +++++
 src/modules/globals.cpp | 8 ++++++++
 src/modules/globals.h   | 7 +++++++
 3 files changed, 20 insertions(+)

diff --git a/src/main.cpp b/src/main.cpp
index 1f01c52..38ff65f 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -190,6 +190,11 @@ void ReportVersion(const mp::RequestMsg &rq) {
     case 2:
         v = project_version_revision;
         break;
+    case 3:
+        // @@TODO may be allow reporting uint16_t number of errors,
+        // but anything beyond 255 errors means there is something seriously wrong with the MMU
+        v = mg::globals.DriveErrors();
+        break;
     default:
         v = 0;
         break;
diff --git a/src/modules/globals.cpp b/src/modules/globals.cpp
index ac9649c..eaf86b7 100644
--- a/src/modules/globals.cpp
+++ b/src/modules/globals.cpp
@@ -28,5 +28,13 @@ void Globals::SetFilamentLoaded(bool newFilamentLoaded) {
     filamentLoaded = newFilamentLoaded;
 }
 
+uint16_t Globals::DriveErrors() const {
+    return modules::permanent_storage::DriveError::get();
+}
+
+void Globals::IncDriveErrors() {
+    modules::permanent_storage::DriveError::increment();
+}
+
 } // namespace globals
 } // namespace modules
diff --git a/src/modules/globals.h b/src/modules/globals.h
index f164c04..d64176c 100644
--- a/src/modules/globals.h
+++ b/src/modules/globals.h
@@ -33,6 +33,13 @@ public:
     /// @param newFilamentLoaded new state
     void SetFilamentLoaded(bool newFilamentLoaded);
 
+    /// @returns the total number of MMU errors so far
+    /// Errors are stored in the EEPROM
+    uint16_t DriveErrors() const;
+
+    /// Increment MMU errors by 1
+    void IncDriveErrors();
+
 private:
     uint8_t activeSlot;
     bool filamentLoaded;