From 32ee1da8e8ee0585cb5f39e69f9b1e5ae85aa7f2 Mon Sep 17 00:00:00 2001
From: Eggert Jung <eggert.s.jung@wischhof13.de>
Date: Wed, 6 Apr 2022 00:18:55 +0200
Subject: [PATCH] limit spooling speed

---
 spule.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/spule.c b/spule.c
index 233b954..50d3a27 100644
--- a/spule.c
+++ b/spule.c
@@ -33,7 +33,6 @@ void timer5_init()
     OCR5C = 500;
 
     DDRL |= 1 << 5;
-
 }
 
 void do_spule(){
@@ -58,6 +57,10 @@ void do_spule(){
     else{
         /* speed regulation - keep taenzer at 10% */
         int32_t tmp = (100 - (int32_t)taenzer_state.pos/1000)*10;
+
+        if(tmp < -75000/abzug_speed/2)
+            tmp = -75000/abzug_speed/2;
+
         ICR5=75000/abzug_speed + tmp;
         OCR5C = ICR5/2;