diff --git a/Marlin/stepper.cpp b/Marlin/stepper.cpp index 1beeb2ce62..a604c92716 100644 --- a/Marlin/stepper.cpp +++ b/Marlin/stepper.cpp @@ -683,29 +683,50 @@ void Stepper::isr() { old_OCR0A += eISR_Rate; OCR0A = old_OCR0A; - #define STEP_E_ONCE(INDEX) \ - if (e_steps[INDEX] != 0) { \ - E## INDEX ##_STEP_WRITE(INVERT_E_STEP_PIN); \ - if (e_steps[INDEX] < 0) { \ - E## INDEX ##_DIR_WRITE(INVERT_E## INDEX ##_DIR); \ - e_steps[INDEX]++; \ - } \ - else { \ - E## INDEX ##_DIR_WRITE(!INVERT_E## INDEX ##_DIR); \ - e_steps[INDEX]--; \ - } \ + #define SET_E_STEP_DIR(INDEX) \ + E## INDEX ##_DIR_WRITE(e_steps[INDEX] <= 0 ? INVERT_E## INDEX ##_DIR : !INVERT_E## INDEX ##_DIR) + + #define START_E_PULSE(INDEX) \ + if (e_steps[INDEX]) E## INDEX ##_STEP_WRITE(INVERT_E_STEP_PIN) + + #define STOP_E_PULSE(INDEX) \ + if (e_steps[INDEX]) { \ + e_steps[INDEX] < 0 ? ++e_steps[INDEX] : --e_steps[INDEX]; \ E## INDEX ##_STEP_WRITE(!INVERT_E_STEP_PIN); \ } + SET_E_STEP_DIR(0); + #if E_STEPPERS > 1 + SET_E_STEP_DIR(1); + #if E_STEPPERS > 2 + SET_E_STEP_DIR(2); + #if E_STEPPERS > 3 + SET_E_STEP_DIR(3); + #endif + #endif + #endif + // Step all E steppers that have steps for (uint8_t i = 0; i < step_loops; i++) { - STEP_E_ONCE(0); + + START_E_PULSE(0); #if E_STEPPERS > 1 - STEP_E_ONCE(1); + START_E_PULSE(1); #if E_STEPPERS > 2 - STEP_E_ONCE(2); + START_E_PULSE(2); #if E_STEPPERS > 3 - STEP_E_ONCE(3); + START_E_PULSE(3); + #endif + #endif + #endif + + STOP_E_PULSE(0); + #if E_STEPPERS > 1 + STOP_E_PULSE(1); + #if E_STEPPERS > 2 + STOP_E_PULSE(2); + #if E_STEPPERS > 3 + STOP_E_PULSE(3); #endif #endif #endif