From d0cbe86a2decbaebb6172eb2afca577cfbd33d2e Mon Sep 17 00:00:00 2001
From: Markus Amsler <markus.amsler@oribi.org>
Date: Mon, 21 Feb 2011 15:52:15 +1100
Subject: [PATCH] extruder: Half-step on every step signal.

No idea why only every 4th step signal would actually step, but this generates a lot of noise for nothing.
---
 extruder/extruder.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/extruder/extruder.c b/extruder/extruder.c
index 4f227d0..3882564 100644
--- a/extruder/extruder.c
+++ b/extruder/extruder.c
@@ -79,12 +79,12 @@ ISR(PCINT0_vect) {
 		else
 			coil_pos--;
 
-		coil_pos &= 31;
+		coil_pos &= 7;
 
 		//Grab the latest motor power to use
 		pwm = motor_pwm;
 
-		switch(coil_pos >> 2) {
+		switch(coil_pos) {
 			case 0:
 			  WRITE(H1D, 0);
 			  WRITE(H2D, 0);