diff --git a/Marlin/src/feature/bltouch.cpp b/Marlin/src/feature/bltouch.cpp index fe56341a47..1c6c1eb4aa 100644 --- a/Marlin/src/feature/bltouch.cpp +++ b/Marlin/src/feature/bltouch.cpp @@ -42,9 +42,14 @@ bool BLTouch::od_5v_mode; // Initialized by settings.load, 0 = Open Drai #include "../core/debug_out.h" bool BLTouch::command(const BLTCommand cmd, const millis_t &ms) { - if (DEBUGGING(LEVELING)) SERIAL_ECHOLNPGM("BLTouch Command :", cmd); - servo[Z_PROBE_SERVO_NR].move(cmd); - safe_delay(_MAX(ms, (uint32_t)BLTOUCH_DELAY)); // BLTOUCH_DELAY is also the *minimum* delay + const BLTCommand current = servo[Z_PROBE_SERVO_NR].read(); + if (DEBUGGING(LEVELING)) SERIAL_ECHOLNPGM("BLTouch from ", current, " to ", cmd); + // If the new command is the same, skip it (and the delay). + // The previous write should've already delayed to detect the alarm. + if (cmd != current) { + servo[Z_PROBE_SERVO_NR].move(cmd); + safe_delay(_MAX(ms, (uint32_t)BLTOUCH_DELAY)); // BLTOUCH_DELAY is also the *minimum* delay + } return triggered(); }