From f0d14b83bc9aed3870ed28476fd9a54458fc06e8 Mon Sep 17 00:00:00 2001
From: Msq001 <760675063@qq.com>
Date: Sat, 30 Mar 2019 02:40:42 +0800
Subject: [PATCH] Save/restore Relative modes in Power-Loss Recovery (#13501)

---
 Marlin/src/feature/power_loss_recovery.cpp | 8 ++++++++
 Marlin/src/feature/power_loss_recovery.h   | 3 +++
 2 files changed, 11 insertions(+)

diff --git a/Marlin/src/feature/power_loss_recovery.cpp b/Marlin/src/feature/power_loss_recovery.cpp
index ba434116d..a30dffa45 100644
--- a/Marlin/src/feature/power_loss_recovery.cpp
+++ b/Marlin/src/feature/power_loss_recovery.cpp
@@ -185,6 +185,10 @@ void PrintJobRecovery::save(const bool force/*=false*/, const bool save_queue/*=
       info.retract_hop = fwretract.current_hop;
     #endif
 
+    //relative mode
+    info.relative_mode = relative_mode;
+    info.relative_modes_e = gcode.axis_relative_modes[E_AXIS];
+
     // Commands in the queue
     info.commands_in_queue = save_queue ? commands_in_queue : 0;
     info.cmd_queue_index_r = cmd_queue_index_r;
@@ -339,6 +343,10 @@ void PrintJobRecovery::resume() {
   sprintf_P(cmd, PSTR("G1 F%d"), info.feedrate);
   gcode.process_subcommands_now(cmd);
 
+  //relative mode
+  if (info.relative_mode) relative_mode = true;
+  if (info.relative_modes_e) gcode.axis_relative_modes[E_AXIS] = true;
+
   // Process commands from the old pending queue
   uint8_t c = info.commands_in_queue, r = info.cmd_queue_index_r;
   for (; c--; r = (r + 1) % BUFSIZE)
diff --git a/Marlin/src/feature/power_loss_recovery.h b/Marlin/src/feature/power_loss_recovery.h
index dd330652e..c2f868771 100644
--- a/Marlin/src/feature/power_loss_recovery.h
+++ b/Marlin/src/feature/power_loss_recovery.h
@@ -76,6 +76,9 @@ typedef struct {
     #endif
   #endif
 
+  // Relative mode
+  bool relative_mode, relative_modes_e;
+
   // Command queue
   uint8_t commands_in_queue, cmd_queue_index_r;
   char command_queue[BUFSIZE][MAX_CMD_SIZE];