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M109 R option if misused could cause a wait-forever situation

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jbrazio 9 years ago
parent
commit
1981e53d68
  1. 4
      Marlin/Marlin_main.cpp

4
Marlin/Marlin_main.cpp

@ -3940,6 +3940,10 @@ inline void gcode_M109() {
// Exit if the temperature is above target and not waiting for cooling
if (no_wait_for_cooling && !isHeatingHotend(target_extruder)) return;
// Prevents a wait-forever situation if R is misused i.e. M109 R0
// Try to calculate a ballpark safe margin by halving EXTRUDE_MINTEMP
if (degTargetHotend(target_extruder) < (EXTRUDE_MINTEMP/2)) return;
#ifdef TEMP_RESIDENCY_TIME
long residency_start_ms = -1;
// Loop until the temperature has stabilized

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